Visual Circuits HD Focus Bedienungsanleitung
50060b 1-3
HD Focus
High Definition Video (HDTV) format
Single channel PCI decoder card
Introduction:
The HD Focus is a single channel PCI board, which enables NT-based systems to play back
High-Definition video (HDTV) from a hard disk. The stored video file is in the form of a standard
MPEG2 transport stream file. Audio and video PES IDs can be set in software for multi-stream
applications. All 18 of the standard ATSC digital television formats are supported. The output of
the card is either RGBHV or YPrPb analog video (software selectable) and the output video
converters have 10 bits of resolution in order to provide high accuracy and pristine images. A
bus-master design means that very little processor overhead is required when playing files.
Dolby digital 5.1 surround sound is supported in hardware, which (unlike software solutions)
allows for multiple-card support in one computer system. Multiple audio channels can be down
mixed to stereo, and a variety of audio formats can be decoded.
A comprehensive API is included with the board to allow for rapid application development, and
the ReelTime HD software library is functionally similar to the Visual Circuits 4ReelTime
Pro/RGB series of MPEG2 playback cards.
SPECIFICATIONS
Physical Length = 7 inches
Width = 4.2 inches
Connector 25 pin DSUB for use with breakout cable or rackmount
BNC breakout box
Video compression format ISO/ICE 13818-2 MP@HL, MP@ML MPEG2
transport stream
Video resolutions supported for 1280x720 (60P, 30P, 60I)
50060b 2-3
decoding 1920x1080 (60I, 30P, 24P)
704x480 (60P, 30P, 24P, 60I)
720x480 (60P, 30P, 24P, 60I)
640x480 (60P, 30P, 24P, 60I)
Bitrate Up to 40mbps
Trick modes Pause, single step, slow motion, fast forward. 3:2 pull-
down supported for film mode decoding
Video output resolution 1920x1080I
Video output format SMPTE 274M component or RGBHV software
selectable
Output level H/V composite sync for
RGB TTL level negative-going composite sync (H and V)
Video Output accuracy 10 bits per channel for D/A conversion
OSD 256 colors from 65536 palette
Transparency and 4-level blending
Supports full OSD screen
Audio compression formats decoded Dolby Digital (AC3)
MPEG-1 2-channel layers I and II
MPEG-2 2-channel Layer II
LPCM uncompressed
Dolby Prologic
Audio controls 6 independent channels:
Volume, balance, down mix, mute, audio ID select
Sampling rates supported 32khz, 44.1 kHz, 48khz
Frequency response 20hz - 20khz +/- .5db
Audio output level Up to 4v p-p
Audio output impedance 620 ohms
All specifications subject to change without notice.
50060b 3-3
Pin-Out Connection Table: HD Focus
PIN HD Focus
1Ground
5AUDIO SUB WOOFER
8AUDIO LEFT REAR
9V SYNC
11 AUDIO LEFT FRONT
12 BLUE/ Pb
13 GREEN/y
18 AUDIO CENTER
21 AUDIO RIGHT REAR
23 H SYNC
24 AUDIO RIGHT FRONT
25 RED/Pr
REGISTRY EDITING: CONFIGURING THE DRIVER
To edit the registry settings, use the registry editor included with the OS.
Go to "Start>run>regedit": Then:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VCChd\Parameters
To make a hidden parameter or "DWORD" value visible, while viewing the parameters, go to
"Edit>New>DWORD Value". Now you can type in the DWORD value name and save. To
change a DWORD value double click and modify as required. The driver always must be
stopped and restarted before changes will take effect. This can be done by accessing the devices
through the desktop shortcut or "Control Panel>Devices" and stopping and restarting the driver.
If the VCCHD driver ever fails to restart, you may simply reboot the system.
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