IBM Laptop AC453A User Manual

AUGUST 1993  
AC453A  
Computertop TV-III  
CUSTOMER Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX  
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
SUPPORT  
INFORMATION  
 
COMPUTERTOP TV-III  
Contents  
1.  
2.  
3.  
SPECIFICATIONS ...............................................................................................4  
INTRODUCTION ...............................................................................................5  
INSTALLATION..................................................................................................6  
3.1  
3.2  
Hardware Installation............................................................................6  
Software Installation..............................................................................7  
4.  
OPERATION........................................................................................................9  
4.1  
4.2  
4.3  
4.4  
Find/Hide Remote................................................................................9  
Clear  
..................................................................................................9  
Show Always ...........................................................................................9  
Configure ...............................................................................................9  
4.4.1  
4.4.2  
4.4.3  
4.4.4  
4.4.5  
4.4.6  
4.4.7  
Brightness.................................................................................9  
Contrast..................................................................................10  
Tint (Hue) .............................................................................10  
Color (Saturation).................................................................10  
Red Level................................................................................11  
Green Level............................................................................11  
Blue Level...............................................................................11  
4.5  
4.6  
Broadcast..............................................................................................11  
Audio....... .............................................................................................12  
4.6.1  
4.6.2  
4.6.3  
4.6.4  
4.6.5  
Volume ...................................................................................12  
Mute........................................................................................12  
Bass .........................................................................................13  
Treble .....................................................................................13  
Balance...................................................................................13  
4.7  
4.8  
Help......................................................................................................14  
Video Align ..........................................................................................14  
4.8.1  
4.8.2  
4.8.3  
4.8.3  
Exit  
Pallete Skew Adjust................................................................14  
Video Window Position .........................................................14  
Video Position Adjustments..................................................15  
Shift Clock Adjustment .........................................................15  
................................................................................................15  
4.9  
4.10  
Channel Selection ...............................................................................15  
4.10.1 Channel Display.....................................................................16  
4.10.2 Power Key...............................................................................16  
4.10.3 Fine Tuning ...........................................................................16  
4.10.4 Set Favorite Channels............................................................16  
Sleep Timer..........................................................................................17  
4.11.1 WakeUp Function..................................................................17  
Clock Display........................................................................................17  
Selecting the Audio Source.................................................................17  
Selecting the Video Source.................................................................18  
Still Image Capture..............................................................................18  
Still Image Display ...............................................................................19  
Print Captured Images ........................................................................19  
Freeze/Unfreeze Video.......................................................................19  
Set Scaling Mode .................................................................................19  
Select The User Interface....................................................................20  
Set Channel Presets .............................................................................20  
Zooming and Panning.........................................................................20  
Switching to Tuner, VCR, Camcorder or Laser Disk Player .............20  
4.11  
4.12  
4.13  
4.14  
4.15  
4.16  
4.17  
4.18  
4.19  
4.20  
4.21  
4.22  
4.23  
3
 
COMPUTERTOP TV-III  
1. Specifications  
System Bus —  
System  
IBM AT or compatible 286/386/486, 8 or 16-bit slot  
Requirements — DOS 3.1 or higher, Microsoft Windows 3.1  
Monitor —  
VGA  
Amplifier  
Power —  
4 watts (2 watts/channel max.)  
TV Channels —  
122 channels covering broadcast and cable VHF  
and UHF channels.  
Video Inputs —  
NTSC composite  
Stereo Speakers — 8 ohms  
CD-ROM  
inputs —  
Accepts external and internal connections for stereo  
audio inputs from CD players or CD-ROM drivers  
Stereo  
Audio Inputs —  
Accepts line-level stereo audio inputs.  
TV Antenna  
Inputs —  
Adapters supplied to connect with 75-ohm coaxial cable  
or 300-ohm flat antenna cable  
Size —  
4.2"H x 0.8"W x 9.6"L (10.7 x 2 x 24.4 cm)  
2 lb. (0.9 kg)  
Weight —  
4
 
CHAPTER 2: Introduction  
2. Introduction  
The Computertop TV-III card gives  
you simultaneous viewing of one live  
television source in a window and  
running application programs such  
as spreadsheets, word processors,  
or desktop publishing in other  
windows. The hardware requires  
minimal processor bandwidth, so  
programs run at full speed even  
while the live-motion window is  
displayed.  
The Computertop TV-III card is a  
full-motion video display card with  
a television tuner and audio-  
processing circuitry. It allows a live  
video window from cable or  
broadcast television to be merged  
with VGA graphics on a single  
display monitor. An external image  
source from a video cassette  
recorder (VCR), laser disk player,  
or camcorder is also supported. The  
Computertop TV-III contains an on-  
card audio power amplifier sufficient  
to drive headphones or a set of  
unpowered external speakers.  
You can use the system hard disk to  
store snapshots of live images on the  
screen. Once saved, the images can  
be imported into a variety of  
desktop-publishing or image-  
processing programs for further  
manipulation.  
®
The Card and an AT compatible  
computer running Windows 3.1  
and an external VGA display make  
up a full-motion multimedia  
presentation system.  
5
 
COMPUTERTOP TV-III  
3. Installation  
4.Find an empty 16-bit slot next  
to the VGA card. Rearrange  
existing cards if needed.  
Use the hardware installation guide  
that came with your system to find  
specifics related to your PC.  
5.Avoid static discharge—touch  
the metal surface of the PC.  
WARNING  
Static discharge can damage  
sensitive electronic com-  
ponents on your Com-  
putertop TV-III card and in  
your PC. When accessing PC  
cards, use anti-static tech-  
niques: Avoid wearing  
synthetic fibers and scuffing  
on the carpet. Dry air and  
carpeting are ideal for static  
generation. Before handling  
PC boards, touch the metal  
surface of the computer (if it  
is plugged in) to discharge  
any residual static. To avoid  
generating additional static,  
try standing in one place and  
having all the tools nearby  
before installing the card.  
6.Remove the metal back plate  
from the empty slot and set the  
retaining screw aside. Carefully  
remove the Computertop  
TV-III card from the anti-static  
bag and install it in the empty  
16-bit slot next to the VGA card.  
Make sure the card seats firmly  
into both connectors of the  
backplane and aligns with the  
front edge guide. Use the  
retaining screw to secure the  
card to the PC chassis.  
7.Attach the “feature connector”  
cable between the Computertop  
TV-III board and the VGA  
display card. Motherboard VGA  
systems have a dual-row header.  
Most separate VGA cards have  
an edge connector. Align the red  
stripe of the cable to face the  
rear card edge of the machine.  
Dress the cable to allow a clean  
installation of the PC chassis  
cover.  
3.1 Hardware Installation  
Follow these steps to install your  
Computertop TV-III card:  
1.Turn off the power to the PC  
and the monitor. Disconnect the  
power cord from the outlet.  
2.Remove the cover of the PC.  
8.Disconnect the VGA monitor  
cable from the VGA controller  
card and reattach the VGA cable  
to the middle connector on the  
Computertop TV-III card.  
3.Identify the VGA display section.  
This is where the VGA monitor is  
connected— often a half height  
card.  
6
 
CHAPTER 3: Installation  
9.Plugthe terminating “dummy  
plug” into the external  
connector of the VGA card to  
which the monitor cable was  
previously attached.  
alignment, seating, and  
installation. Review the initial  
installation procedures.  
Compare your setup to the  
installation picture. Try again.  
10.Attach the supplied mini-DIN  
cable to the Computertop  
TV-III board.  
NOTE  
Some Local-bus VGA boards  
may  
cause  
improper  
operation of the Com-  
putertop TV-III board. If you  
have a Local-bus VGA board  
in your system and nothing  
appears on the VGA monitor  
when you boot up after  
installing the Com-putertop  
TV-III board, power-down the  
system and replace the  
Local-bus VGA board with  
any AT bus VGA board. Your  
system should now boot up  
and operate normally with  
the Computer-top TV-III  
board installed.  
The yellow jack is for composite  
video input. The red jack is for  
left-channel audio input. The  
white jack is for right-channel  
audio input.  
11.Attach the antenna or cable  
source to the F-RCA adapter.  
Screw the adapter onto the cable  
and insert it in the second hole  
from the top on back of the  
Computertop TV-III card. The  
cable should push in firmly and  
will stick out slightly from the  
Computertop TV-III card.  
3.2 Software Installation  
12.Attach the headphone or  
external speakers to the mini-  
headphone jack, the top most  
connector on the card.  
Follow these steps to install the  
Computertop TV-III software:  
1.Proper operation of the  
Computertop TV-III board  
13.With the cover off, plug the  
power cord in and turn on the  
VGA monitor and the computer.  
A familiar bootup sequence  
should be visible on the monitor  
(a power-up test, or memory  
count). If everything appears to  
be normal, proceed with the  
software installation. If a  
®
requires Microsoft Windows 3.1  
operating system software to run  
Computertop TV-III software. If  
you do not have Microsoft  
Windows 3.1 installed, follow  
your user manual and install  
Microsoft Windows.  
sequence of beeps is heard or  
the monitor remains blank,  
power off the PC. Check the  
cards and cables for proper  
7
 
COMPUTERTOP TV-III  
2.Setup and installation of the  
Computertop TV-III software  
must be done at the DOS  
command level. Before  
6.Once software installation is  
complete, you can start  
Computertop TV-III operation  
by double-clicking on the  
Computertop TV-III icon. The  
cursor will change to an  
attempting to install the  
Computertop TV-III software,  
you must exit Microsoft  
Windows. Do not exit Microsoft  
Windows by using the DOS icon.  
“hourglass” while the board is  
being initialized. When the  
cursor returns to normal, hit the  
SHIFT key, release it, then hit  
the CONTROL key and release  
it. In a few seconds, the  
3.Insert the Computertop TV-III  
setup disk in drive A:.  
Computertop TV-III video  
window will pop up.  
4.Type A:<CR>. A DOS prompt  
with drive letter A should be  
visible.  
5.Type SETUP <CR> and follow  
the instructions.  
8
 
CHAPTER 4: Operation  
4. Operation  
This chapter describes the menu  
items supported by Computertop  
TV-III Board.  
This option brings up the Color  
dialog box with seven scroll bars to  
control Brightness, Contrast,  
Tint_(Hue), Color (saturation), Red  
Level, Green Level, and Blue Level.  
4.1 Find/Hide Remote  
Find/Hide Remote hides or  
redisplays the remote control  
window.  
4.4.1 BRIGHTNESS  
Changes in the brightness level of  
the video are reflected with a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Brightness is displayed above the row  
of bars. The brightness can be  
adjusted three ways:  
4.2 Clear  
Clear clears the whole video buffer  
to black.  
4.3 Show Always  
a.Use the Brightness button on the  
remote. Pressing the top of the  
button increases the brightness  
and pressing the bottom  
Show Always can be set to on or off.  
If ON, the TV window is always  
displayed on top of other windows  
on the screen. If OFF, the TV  
window behaves like any other  
window and can be obscured by  
other windows.  
decreases the brightness.  
b.Use the B and Control-B key  
combinations on the keyboard  
to decrease and increase the  
brightness, respectively.  
4.4 Configure  
Configure brings up the Configure  
dialog box which lets you set the  
following:  
c.Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up the Colors  
dialog box with scroll bars for  
color adjustments. A Brightness  
scroll bar lets you adjust the  
brightness level.  
a.Video port address  
b.Video buffer address  
c.Replicate on/off  
We recommend that you do not  
change these settings.  
9
 
COMPUTERTOP TV-III  
4.4.2 CONTRAST  
c.Select Colors option from the  
floating menu or from the  
Configure menu in the menu  
bar. This brings up the Colors  
dialog box with scroll bars for  
color adjustments. A Tint scroll  
bar lets you adjust the hue.  
Changes in the contrast are reflected  
with a row of vertical bars at the  
bottom left corner of the TV screen.  
The word Contrast is displayed  
above the row of bars. The contrast  
can be adjusted three ways:  
4.4.4 COLOR (SATURATION)  
a.Use the contrast button on the  
remote. Pressing the top of the  
button increases the contrast  
and pressing the bottom  
decreases it.  
Changes in the saturation of the  
video are reflected with a row of  
vertical bars at the bottom right  
corner of the TV screen. The word  
Color is displayed above the row of  
bars. The saturation can be adjusted  
three ways:  
b.Use the K and Control-K key  
combinations on the keyboard  
to decrease and increase the  
level, respectively.  
a.Use the Color button on the  
remote. Pressing the top of the  
button increases the saturation  
and pressing the bottom  
decreases it. At the lowest level,  
the picture is black and white. At  
the top of the range, the colors  
are very bright.  
c.Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up the Colors  
dialog box with scroll bars for  
color adjustments. A Contrast  
scroll bar lets you adjust the  
contrast level.  
b.Use the C and Control-C key  
combinations on the keyboard  
to decrease and increase the  
saturation, respectively.  
4.4.3 TINT (HUE)  
Changes in the tint (hue) of the  
video are reflected with a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Tint is displayed above the row of  
bars. The tint can be adjusted three  
ways:  
c.Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up the Colors  
dialog box with scroll bars for  
color adjustments. A Color scroll  
bar lets you adjust the saturation  
level.  
a.Use the tint button on the  
remote. Pressing the top or  
bottom changes the hue in  
different directions.  
b.Use the T and Control-T key  
combinations on the keyboard  
to change the tint.  
10  
 
CHAPTER 4: Operation  
4.4.5 RED LEVEL  
4.4.7 BLUE LEVEL  
Changes in the red level of the video  
are reflected with a row of vertical  
bars at the bottom left corner of the  
TV screen. The word Red is  
displayed above the row of bars. The  
red level can be adjusted two ways:  
Changes in the blue level of the  
video are reflected with a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Blue is displayed above the row of  
bars. The blue level can be adjusted  
two ways:  
a.Use the Red button on the  
remote. Pressing the top of the  
button increases the red level  
and pressing the bottom  
decreases it.  
a.Use the Blue button on the  
remote. Pressing the top of the  
button increases the amount of  
blue in the picture and pressing  
the bottom decreases it.  
b.Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up a dialog box  
with scroll bars for color  
adjustments. A Red scroll bar  
lets you adjust the red level.  
b. Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up a dialog box  
with scroll bars for color  
adjustments. A Blue scroll bar  
lets you adjust the blue level.  
4.4.6 GREEN LEVEL  
Changes in the green level of the  
video are reflected with a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Green is displayed above the row of  
bars. The green level can be adjusted  
two ways:  
a.Use the Green button on the  
remote. Pressing the top of the  
button increases the amount of  
green in the picture and  
pressing the bottom decreases it.  
b.Select the Colors option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up a dialog box  
with scroll bars for color  
adjustments. A Green scroll bar  
lets you adjust the green level.  
11  
 
COMPUTERTOP TV-III  
4.5 Broadcast  
Broadcast gives you the following  
options:  
4.6.1 VOLUME  
Changes in the volume are reflected  
with a row of vertical bars at the  
bottom left corner of the TV screen.  
A red bar moves along the row to  
indicate the current volume level.  
The word Volume is displayed above  
the row of bars. The volume can be  
adjusted three ways:  
a.USA Broadcast  
b.USA Cable  
c.Japan  
a.Use the Volume button on the  
remote. Pressing the top of the  
button increases the volume and  
pressing the bottom decreases it.  
These are the only standards that  
can be handled with an NTSC tuner.  
4.6 Audio  
This brings up the Audio dialog box  
to control the following audio  
settings:  
b.Use the - (minus) and + (plus)  
keys on the keyboard to decrease  
and increase the volume,  
respectively.  
a. Volume  
b.Mute  
c.Select the Audio option from the  
floating menu or from the  
Configure menu in the menu  
bar. This brings up a dialog box  
with scroll bars for audio  
c. Bass  
adjustments. A Volume scroll bar  
lets you adjust the volume level.  
d.Treble  
e. Balance  
4.6.2 MUTE  
Mute temporarily turns the audio  
off. When mute is turned off, the  
volume is restored to its original  
setting. Mute can be turned on and  
off as follows:  
a. Use the Mute button on the  
remote. This button toggles  
mute on and off.  
b.Use the M key on the keyboard  
to turn mute on and off.  
c. Use the Mute button in the  
Audio dialog box reached the  
Audio item in the floating menu  
or from the Configure menu in  
the menu bar.  
12  
 
CHAPTER 4: Operation  
4.6.3 BASS  
c. Select the Audio option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up the Audio  
dialog box with scroll bars for  
audio adjustments. A Treble  
scroll bar lets you adjust the  
treble.  
Changes in the bass level of the  
audio are reflected with a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Bass is displayed above the row of  
bars. The bass level can be adjusted  
three ways:  
4.6.5 BALANCE  
a. Use the Bass button on the  
remote. Pressing the top of the  
button increases the bass and  
pressing the bottom decreases it.  
Balance changes the balance  
between the volume of the right and  
left audio channels via a row of  
vertical bars at the bottom left  
corner of the TV screen. The word  
Balance is displayed above the row of  
bars. The balance can be adjusted  
three ways:  
b.Use the L and Control-L key  
combinations on the keyboard  
to decrease and increase the  
bass, respectively.  
c. Select the Audio option from the  
floating menu or from the  
Configure menu in the menu  
bar. This brings up the Audio  
dialog box with scroll bars for  
audio adjustments. A Bass scroll  
bar lets you adjust the bass.  
a.Use the Balance button on the  
remote. Pressing the top of the  
button increases the ratio  
between volume in the left and  
right channels. Press the bottom  
to increase the volume of the  
right channel relative to the left.  
4.6.4 TREBLE  
b.Use the right and left arrow keys  
on the keyboard to increase the  
ratio of right volume to left  
volume or the ratio of left to  
right, respectively.  
Treble changes in the treble are  
reflected with a row of vertical bars  
at the bottom left corner of the TV  
screen. The word Treble is displayed  
above the row of bars. The treble  
can be adjusted three ways:  
c. Select the Audio option from  
the floating menu or from the  
Configure menu in the menu  
bar. This brings up the Audio  
dialog box with scroll bars for  
audio adjustments. A Balance  
scroll bar lets you adjust the  
balance.  
a. Use the Treble button on the  
remote. Pressing the top of the  
button increases the treble and  
pressing the bottom decreases it.  
b. Use the H and Control-H key  
combinations on the keyboard  
to decrease and increase the  
treble, respectively.  
13  
 
COMPUTERTOP TV-III  
4.7 Help  
4.8 Video Align  
Displays a Windows help screen  
explaining the functions of the  
program. Help is made available in  
two ways.  
This brings up a Video Align dialog  
box that lets you reposition the video  
window to match the VGA display  
screen. These adjustments should be  
performed using the “Screen “ TV  
style (set the style using TV Style in  
the Configure menu).  
a. Click on the “?” key on the  
remote. Then click on any  
remote button or a menu item.  
Instead of performing the  
function, help on the function is  
displayed.You can also get help  
by pressing the SHIFT F1 key  
combination. When the cursor  
moves into the TV Board  
window, it will change shape to a  
“?”. Then you can get help on  
any menu selection by clicking  
on it.  
4.8.1 PALETTE SKEW ADJUST  
This control adjusts the RAMDAC  
delay timing. To adjust it, place the  
white cursor against the video  
picture. Adjust the palette skew  
control to minimize the magenta  
fringing around the left and right  
edges of the cursor.  
4.8.1 VIDEO WINDOW POSITION  
This control aligns the edges of the  
video window with the VGA raster.  
Use the vertical and horizontal  
window scroll bars to adjust for  
minimal magenta edges at the  
borders of the video window.  
b. When the cursor is on top of the  
TV Board window, press F1, or  
select Help from the menu. This  
displays the help index. Select  
any topic by clicking the mouse  
on the topic.  
NOTE  
Help is arranged in  
a
hierarchical fashion. By  
clicking the mouse on a  
green term or topic on the  
help screen, further help on  
that term/topic can be  
obtained. Also note that  
every help screen has a  
search button. By activating  
it a list of keywords are  
displayed. The keywords  
match the functions made  
available to the user. Select  
any of these to display help.  
14  
 
CHAPTER 4: Operation  
4.8.3 VIDEO POSITION ADJUSTMENTS  
4.9 Exit  
First set Video Position Horizontal  
and Vertical slide bars to the far left  
of their range. Next adjust the Shift  
Clock Adjust control as described  
below. Complete the adjustment  
with the Video Position Horizontal  
and Vertical scroll bars to register  
the video memory position  
Brings up the Exit dialog box where  
the user specifies whether to leave  
the audio on or off after the  
program is closed.  
NOTE  
By default audio is disabled  
when the program is closed.  
(panning) inside the live video  
window.  
4.10 Channel Selection  
These scroll bars let you slide or  
“pan” the video picture so that it  
completely fits within the screen  
boundary. Adjust horizontally then  
vertically to only show the live  
moving image, with no “frozen”  
video at the left, right, top, or  
bottom edge of the displayed  
window.  
When the TV input is selected  
(through the TV/Video button or  
menu option), the channel can be  
changed in the following ways:  
a. Enter a three-digit (max.)  
number using the number keys  
on the remote or the number  
keys on the keyboard. The  
number of digits depends on the  
broadcast option selected. Most  
non-cable options restrict the  
channel number to a maximum  
of two digits. Most cable options  
accept a three- digit number.  
4.8.4 SHIFT CLOCK ADJUSTMENT  
This is a horizontal timing  
adjustment. Closely observe the left  
and right edges of the image. Move  
this control until the left a nd right  
edges of the picture show  
uncorrupted live video.  
15  
 
COMPUTERTOP TV-III  
For channels requiring only one  
digit, a short delay confirms that  
the whole channel number has  
been entered. If you don’t enter  
a second digit before a certain  
amount of time, the channel is  
set using just the single digit. If  
you select an invalid channel,  
the number entered is reflected  
on the display, but after a few  
seconds the current channel  
number is redisplayed. For two-  
digit channels, no delay is  
4.10.1 CHANNEL DISPLAY  
When the TV input is selected, the  
current channel number (displayed  
in the LCD panel) can also be  
displayed on the top right corner of  
the TV Board screen by activating  
the Display key on the remote.  
4.10.2 POWER KEY  
The power key turns off the power  
to the TV Board. In order to view the  
picture again, you must turn the  
power back on.  
needed. Only the currently  
selected channel number is  
shown at the top right corner  
of the TV screen. The number  
disappears after a few seconds.  
The delay required for a three-  
digit number is slightly greater  
than for a two-digit number.  
4.10.3 FINE TUNING  
You can adjust the fine tuning in two  
ways:  
a. Use the Fine Tune button on the  
remote. Pressing the top of this  
button increases the frequency  
and pressing the bottom  
decreases it.  
b.Use the Channel button to move  
up and down through the  
channels. Pressing the top of the  
channel button increases the  
channel number and pressing  
the bottom decreases it. Only  
those channels available in the  
currently selected broadcast  
standard are displayed. For  
b. Use the Control + and  
Control - key combinations on  
the keyboard in order to  
increase or decrease the tuning  
frequency. Use the +/- keys from  
the number keypad.  
example, for USA Broadcast the  
range of channels is 2-69. At the  
bottom and top of the range, the  
channel number wraps around.  
4.10.4 SET FAVORITE CHANNELS  
To access your favorite channels  
quickly, there is a Favorite button  
on the remote that behaves like the  
Channel button except that it only  
tunes in the favorite channels. The  
Presets/Tuner dialog box lets you  
add, delete, or change favorite  
channels. You can also use the ALT  
key along with the +/- keys from the  
number key pad to move up and  
down through these channels.  
c. Use the up and down arrows on  
the keyboard. This works the  
same as using the channel  
button on the remote.  
d.The Jump button on the remote  
switches between the last two  
channels selected. The J key can  
also be used to jump between  
channels.  
16  
 
CHAPTER 4: Operation  
4.11 Sleep Timer  
4.13 Selecting the Audio Source  
The sleep timer turns the TV off  
after a period of time. Program the  
time through the Wakeup/Sleep  
dialog box in the Configure menu.  
There are two ways to enable or  
disable the sleep timer:  
There are three audio sources that  
can be selected:  
• The tuner  
• An external source from a laser  
disk or VCR  
a. Use the Sleep button on the  
remote. Pressing once enables  
the function. Pressing a second  
time disables it.  
• An internal source, which could  
be a sound board or CD-ROM  
drive  
The tuner source is selected by  
default. The CD or sound board can  
be selected with a CD button on the  
remote. Pressing this button once  
switches the audio to the CD source  
and brings up a program to control  
the CD-ROM specified in the  
PCPT.INI configuration file. By  
default this is the MusicBox program  
(provided with the Windows  
b.Use the S key on the keyboard to  
enable or disable the function.  
4.11.1 WAKE  
UP  
FUNCTION  
The wake up function switches to  
a specific channel at a predefined  
time. If the TV is iconized or the  
power is turned off, wakeup will  
switch on the TV. The time is  
programmed through the  
Multimedia Extensions). If no  
program is available, the CD is  
selected, but no control program is  
started. Pressing the CD button a  
second time switches the audio back  
to previously selected audio source  
(either the tuner or the external  
source) and closes the control  
program. Video and audio inputs  
are selected together when the  
TV/Video button is used.  
Wakeup/Sleep dialog box invoked  
via the Configure menu. The  
function can be enabled via a check  
box in the Wakeup/Sleep dialog  
box. This dialog box can also be  
invoked using the W key.  
4.12 Clock Display  
The current time can optionally be  
displayed at the bottom right corner  
of the TV screen. There are two ways  
to enable or disable it:  
The audio source can also be  
selected through the Audio dialog  
box. The audio dialog box can be  
invoked through the Audio option  
of the floating menu or the  
a. Use the Clock button on the  
remote control.  
Configure menu on the menu bar.  
It can also be changed by typing A  
through the keyboard.  
b.Use the Clock display choice in  
the floating menu or the  
Configure menu.  
c. Use the D key on the keyboard  
to turn clock display on or off.  
17  
 
COMPUTERTOP TV-III  
4.14 Selecting the Video Source  
4.15 Still Image Capture  
The Computertop TV-III card has  
two video sources, the tuner and an  
external video source such as a laser  
disk player or a VCR. You can select  
the two video sources as follows:  
An image can be captured and  
written to pre-specified file type  
using the Snapshot button on the  
remote. The file name and type are  
specified by selecting Save from the  
Display menu or from the floating  
menu. This brings up a dialog box  
where you can specify a six-  
character name to which a two digit  
number is appended each time a  
new image is captured using the  
Snapshot button or the * key. The  
Save dialog box can also be brought  
up using the Control * key  
a. Use the TV/Video button on  
the remote. This switches both  
the video and audio sources to  
either the tuner or an external  
video source.  
b. Use the V key on the keyboard  
to toggle between video and  
tuner inputs.  
combination. The user can specify  
an eight-character name. This same  
name is used each time an image is  
saved. The following file formats can  
be selected:  
c. Select the TV/Video option of  
the floating menu or the  
Configure menu in the menu  
bar.  
a. Windows device-independent  
bitmap 24-bit RGB, 8-bit color,  
or 8-bit grey-scale  
d. Selecting Tuner through the  
Peripheral menu on the menu  
bar or from the floating menu  
switches the video source to the  
tuner and brings up the  
b.Targa 32-, 24-, or 16-bit RGB  
Presets/Tuner dialog box.  
c. PCX 8-bit color or 8-bit grey  
scale  
d.TIFF (Tagged Image File  
Format) 24-bit RGB, 8-bit color,  
or 8-bit grey scale  
®
e. IBM M-Motion (4:1:1)  
compressed luma/chroma  
format  
18  
 
CHAPTER 4: Operation  
4.17 Print Captured Images  
4.16 Still Image Display  
Still images can be loaded when the  
standard Windows interface or  
screen is selected. To load an image,  
select the Load option from the  
Display menu. The dialog box  
displays two list boxes, one to select  
the directory or disk drive, the other  
to display image files available in the  
current directory. A file is selected  
by double-clicking on the file name  
in the list box, typing the name into  
an edit box, or selecting the file  
through the list box and clicking on  
the OK button. The Cancel button is  
provided to abort the file load. The  
file format is automatically detected.  
The following file types can be  
loaded:  
To print captured images, select the  
Print option from the floating menu  
or from the Display menu of the  
menu bar. This brings up the Print  
dialog box supported by the default  
printer. If no default printer is  
selected, an error message is  
displayed.  
4.18 Freeze/Unfreeze Video  
Video can be frozen or unfrozen  
through the Freeze/Unfreeze  
option in the floating menu or in  
the Display menu in the menu bar.  
If live video is frozen and the TV  
Board style is changed to cabinet,  
the frozen video is unfrozen. This is  
done to prevent uninitialized parts  
of the video buffer from being  
exposed.  
a. Windows device-independent  
bitmap 24-bit RGB, 8-bit, and  
4-bit  
4.19 Set Scaling Mode  
b.Targa 32-, 24-, and 16-bit RGB  
When resizing the video window, the  
aspect ratio can be forced to 4:3 by  
selecting the Proportional option  
in the Scale menu option in the  
floating menu or in the Display  
menu of the menu bar. Selecting  
Stretch instead of Proportional  
allows the user to arbitrarily size  
the video window (any aspect ratio  
is allowed).  
c. PCX 8-bit color and 8-bit grey  
scale  
d.TIFF (Tagged Image File  
Format) 24-bit RGB, 8-bit color,  
or 8-bit grey scale  
e. IBM M-Motion (4:1:1)  
compressed luma/chroma  
format  
A dialog box with the message  
“Unsupported file format” is  
displayed if you try to load a file that  
is not in one of the formats listed  
above.  
19  
 
COMPUTERTOP TV-III  
4.20 Select The User Interface  
4.22 Zooming and Panning  
The Set TV style option in the  
floating menu or the Configure  
menu of the menu bar selects the TV  
interface. When the TV style is set to  
Cabinet or Screen only, choices are  
made through the remote, the  
keyboard, or the floating menu.  
When the cabinet is  
on, the TV is resizable in three sizes:  
full, half and quarter screen. If the  
style is set to Screen only or Standard  
Window, the screen is arbitrarily  
resizable. When Standard Window is  
selected, a standard pop-up Window  
is used to display the video. The title  
bar and menu bars can be turned on  
and off.  
Video can be zoomed by a factor of 2  
by selecting Zoom from the floating  
menu or from the Display menu on  
the menu bar. You can also zoom by  
double-clicking with the right mouse  
button over the video window. When  
the video is zoomed, you can pan by  
dragging the mouse over the video  
window with the right mouse button  
pressed.  
4.23 Switching to Tuner, VCR,  
Camcorder, or Laser Disk Player  
You can switch to the external video  
source and have a specific control  
program initiated by selecting  
Tuner, VCR, CamCorder, or Laser  
disk through the Peripheral menu  
of the menu bar or through the  
floating menu. To specify the  
control program, the user must  
edit the PCPT.INI file. If no control  
program is specified, the video  
(and audio) source is switched,  
but no control program is started.  
4.21 Set Channel Presets  
Channel presets are set up in the  
Presets/Tuner dialog box which is  
invoked by choosing the  
Presets/Tuner choice from the  
floating menu or the Configure  
menu of the menu bar. You can set  
up to 11 presets corresponding to  
function keys F2-F10 (F1 is reserved  
for Help by convention). When the  
tuner source is selected, you can  
switch to preset channels using the  
function keys.  
20  
 
© Copyright 1993. Black Box Corporation. All rights reserved.  
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746  
 

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