Data multiplexing apparatus and multiplexed data demultiplexing apparatus
High-definition video encoding system having color-sensitive quantization
Synchronization of audio/video information
Segmented video on demand system
Apparatus and method for processing a variable-rate coded signal for recording to provide a high-speed search capability, apparatus and method for reproducing such processed signal, and recording including such processed signal
Rational input buffer arrangements for auxiliary information in video and audio signal processing systems Patent #: 5481543
ApplicationNo. 380262 filed on 01/27/1995
US Classes:386/83, Including programmable apparatus360/18, RECORDING OR REPRODUCING PLURAL INFORMATION SIGNALS ON THE SAME TRACK360/48, Data in specific format360/69, AUTOMATIC CONTROL OF A RECORDER MECHANISM386/95, Having another signal386/124Digital recording or reproducing
ExaminersPrimary: Tran, Thai
Assistant: Din, Luanne P.
Attorney, Agent or Firm
International ClassesH04N 005/76
AbstractA system records a single program from a multi-program transport stream that is encoded according to the MPEG-2 standard. The system demultiplexes transport packets from the multi-program transport stream and records the demultiplexed packets on a digital video cassette recorder (DVCR). The system includes circuitry in the encoder which emulates a buffer in the digital recorder that is used to hold the packets to convert the bursty packet data into constant rate data for recording. This emulated buffer controls the overall rate at which packets of the selected program are inserted into the multi-program transport stream by the encoder. As each packet is recorded, a time stamp value, representing when the packet was demultiplexed and a clock count value, representing a number of pulses of a high-frequency system clock signal that occurred during a predetermined number of bytes of the demultiplexed packet are recorded with the demultiplexed packet. These values are used to regenerate timing signals for a single program transport stream when the recorded packet data is replayed from the tape.