| Issue: HD - March 2007 |
FOR-A ENHANCES HD FRAME RATE CONVERTER
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CYPRESS, CA - For-A Corporation of America (www.for-a.com) will be at April’s NAB show with
its upgraded FRC-7000 HD frame rate converter. When the FRC-7000 debuted last
year, it could convert between 1080/59.94i and 1080/50i, and between 720/59.94p
and 720/50p HD frame rates in realtime. The latest release includes advanced
scene cut detection and roll/crawl text detection. Later this year, For-A will
also offer optional support for frame rates that include 23.98psf, 23.98p,
24psf, 24p, 30p, 30psf, 29.97psf, 29p, 25p and 25psf.
The FRC-7000 uses vector motion compensation processing to analyze and
determine the pixel movement in each image frame. This is accomplished by
comparing the movement in the frames before and after the ones being converted.
The FRC-7000’s advanced scene cut detection automatically detects scene changes
and turns off motion compensation processing so as to not affect the scenes
before and after the frames being converted. A complete, new set of frames is
then created in the required output standard.
The FRC-7000 supports eight-channel 48 kHz, 24-bit embedded audio signals in
sync with the video clock. There is also a delay function for synchronization
with video processing. The system offers an optional embed/de-embed card to
allow eight channels of AES/EBU audio to be extracted or inserted into the
HD-SDI signals.
Dolby E materials can be extracted or re-inserted using the FRC-7000’s
embed/de-embed option, then passed through or changed using an external Dolby E
encoder/decoder. Dolby E is the surround sound compression system introduced by
Dolby Laboratories that is becoming increasingly common in the broadcast
production pipeline.
The unit also provides for genlock. Process control can be performed for the
post-conversion video. For test signals, the unit has a color bar, ramp signals
and 1 kHz audio output for signal checking. An alarm tally output indicates
power supply, fan and temperature errors. The video level, chroma level, chroma
phase, setup level, and clips can be adjusted to produce the optimal video
quality.
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