Motorola plans to use the platform of NAB this month to show its new receiver/decoder (DSR-6300) that is still in prototype mode, which the firm said is the first commercial unit of its kind able to deliver three-channel MPEG-4 to MPEG-2 HD transcoding.
The DSR-6300 was designed to allow cablers to increase their HD throughput up to 50 percent. For satellite operators, the receiver-decoder is geared to offering "greater flexibility" in allocating HD services to DBS affiliates. The end-result, the firm said, is providing consumers with a greater number of HD channel choices.
The DSR-6300 features closed-loop statistical multiplexing. The regime, which won Motorola a technical Emmy, is designed to dynamically allocate optimal bandwidth and provide appropriate bit-rate adjustments as the video becomes more (or less) difficult to encode. As a result, Motorola said, up to three HD services can be efficiently delivered to the home in QAM-friendly transport bit-rates, significantly increasing the number of services that can be delivered over a standard cable 256-QAM feed.
The DSR-6300 concurrently uses in-band AFD (active format descriptor) to translate HD services to an appropriate SD service with proper aspect ratio and resolution assignments. Following field trials, DSR-6300 shipments likely will commence next fall.
Motorola will be located at Booth SU4417 at NAB (April 20–23) in Las Vegas.
From TV Technology's HD Notebook.