Downconversion with Background KeyingDownconversion with background keying using XVP-3901 and HMP-1801:
Frame Accurate Aspect Ratio Conversion with AFDFrame accurate Aspect Ratio Conversion (ARC) can be performed automatically using embedded signaling based on the Active Format Description (AFD) standard. AFD data can be easily embedded in a signal by the Densité XVP processor family, and by the EAP-3901 embedder. With AFD, original image information is maintained throughout the entire conversion process for optimal viewing following 4:3 and 16:9 aspect ratio conversion.
Incoming Feed ProcessingUsing the XVP-3901 significantly reduces the amount of equipment required for incoming feed processing. A single XVP-3901 replaces multiple single function devices to provide Dolby E decoding, audio processing and Dolby Digital or Dolby Digital Plus encoding.
|Incoming Feed Problems||XVP-3901 Features|
|Remote feeds need to be adapted to station infrastructure||Frame synchronization, full proc controls, color correction and legalizer|
| Multiple audio formats and audio synchronization:
• Mixed up audio tracks
• Lip sync
• Dolby E and Dolby Digital encoded inputs
• 5.1 audio
• Loudness level
|Extraction, processing and re-insertion for up to 4 embedded audio groups.
Video to audio match delay and fixed delay
Audio track mixing and shuffling
Discrete audio inputs/outputs handled using complimentary audio modules
Dolby Metadata insertion, and will delay Dolby E audio without compromising
Decode Dolby E or Dolby Digital to discreet PCM channels
Audio downmix from 5.1 audio to a Lt Rt or Lo Ro audio 2 channel signal
Stereo to 5.1 upmixing using Linear Acoustic technology
Automatic loudness control
|Receiving SD or HD signals at different times of the day||Built-in up and downconversion automatically converts current input to
|Receiving 1080i into 720p plant (or vice versa)||Built in 720p to/from 1080i crossconversion eliminates need for costly external
|Providing 16:9 and 4:3 aspect ratio conversion||Automatic, frame accurate aspect ratio conversion using embedded signaling,
based on the Active Format Description (AFD) standard.
Background keying capability to fill side or top/bottom panels with graphics
Flexible 5.1 Audio ProcessingThe XVP-3901 can provide very versatile audio processing sequences, due to the flexibility of the optional audio sub-modules. The sub-modules include Dolby E decoding, Dolby Digital decoding, Dolby E encoding, Dolby Digital and Dolby Digital Plus encoding, Linear Acoustic upMAX 2.0 to 5.1 upmixing and automatic loudness control (ALC). Two audio sub-modules can be fitted to an XVP-3901 processor. All audio channels created by the modules are preserved, and can be selected in the output shufflers and mixers for embedding or discrete AES outputs.
Dolby E Decoding, Automatic Loudness Control, Upmixing and Dolby Digital (AC-3) EncodingThe XVP-3901 can be combined with the DAP-1781 for the most advanced multichannel audio processing. As indicated in the upper diagram, this combination can provide Dolby E decoding, automatic loudness control (using Linear Acoustic), upmixing and Dolby Digital (AC-3) encoding, while keeping audio/video tracking on the output. If upmixing is not required, this can be accomplished with a single XVP-3901 signal processor card using Grass Valley ALC (lower diagram).
Dolby Digital Plus TranscodingThe addition of Dolby Digital Plus to the Dolby Digital encoder means that Grass Valley’s audio processing module will provide the same high quality audio compression they always have, but at a data rate as much as 50 percent lower than currently required, enabling 5.1 multichannel audio at rates as low as 192 kb/s. When combining Dolby E decoding and Dolby Digital Plus encoding, broadcasters can can deliver an efficient multichannel surround sound across multiple platforms and content types.