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AssigneeScientific-Atlanta, Inc.
InventorsChristopher H. Birch, Christian V. van Staden, Walter R. Brooks, Paul D. Nicholas, Steven S. Lawrence
Estimating the term…
A multiplex frame format for transmitting digital data in a data transmission system comprises a PACKETS portion comprising a highly error-protected region and a region having only Reed Solomon encoding as an error protection measure, the PACKETS portion including low speed data. The frame format also comprises portions for transmitting medium (AUDIO) and high speed (VIDEO) data streams following the PACKETS portion. Prior to transmission, the composed frame comprising the PACKETS, AUDIO and VIDEO portions is interleaved and the BLOCK SYNC and FRAME SYNC are added. A multiplex structure control packet word of the PACKETS portion immediately follows FRAME SYNC. Thus, the FRAME SYNC word defines where interleaving begins. A demultiplexer in concert with a microcontroller of a decoder decodes the multiplex structure control word and related PACKETS and outputs digital data streams to related output peripheral processors. The BLOCK SYNC word preferably comprises one eight bit byte and contains network signaling or other data at predetermined bit positions within the word. Moreover, the frame format is flexible and may vary in horizontal and vertical dimensions as digital service streams are varied due to service requirements or priorities. The multiplexers for forming the frame according to the present invention may be arranged in redundant (hot standby) or in multi-service arrangements synchronized by a synchronizing waveform, digitally generated to comprise a continuous 3.375 MHz portion and a single cycle frame marking signal of greater magnitude but significantly lower frequency.
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
The method according to claim 5 wherein the multiplex structure control word comprises the first word of interleaved data.
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and the medium speed data being followed by high speed data, the method comprising the steps of:
Apparatus for encoding frames of digital data streams for transmission, the frames comprising rows and columns, the apparatus comprising
An apparatus for transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the apparatus comprising:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
A method of transmitting digital data streams in a frame comprising rows and columns, the first row of the frame comprising a multiplex structure control word, the multiplex structure control word being followed in the frame by other packet data, the packet data being followed in the frame by medium speed data and by high speed data, the method comprising the steps of:
Apparatus for encoding frames of digital data streams for transmission, the frames comprising rows and columns, the apparatus comprising:
Dependencies are inferred from the claim text.