Multiple channel multiplexing apparatus

Details Multiple channel multiplexing apparatus Multiple channel multiplexing apparatus

1994-06-09

1997-01-07

Cosimano, Edward R.

Boots, shoes, and leggings

364514R, 39520017, H04L 2906

Patent

active

055923984

ABSTRACT:
A multiple channel multiplexing apparatus has a data compressor portion for producing compressed data, and a data expander portion for expanding the received compressed data. The data compressor portion has a data compression circuit for data compressing digital audio data and outputting the resulting data blocks, a sub-block divider for dividing the data blocks output from the data compression circuit into sub-blocks, a sub-block ID flag adding circuit for adding a sub-block identification flag identifying the sub-block arrangement, a multiplexer for generating sub-block groups by combining a plural channel group of sub-blocks with the added sub-block identification flags, and multiplexing the sub-block groups to the digital audio interface format. The data expander portion has a data block synthesizer for assembling data blocks from the sub-block groups input from the digital input circuit based on the sub-block identification flags, a demultiplexer for demultiplexing the assembled data blocks to each channel, and a data expansion circuit for expanding the data blocks to extract the original digital audio data.

REFERENCES:
patent: T104003 (1984-03-01), Hall et al.
patent: 2878316 (1959-03-01), Boothroyd
patent: 4665514 (1987-05-01), Ching et al.
patent: 4914526 (1990-04-01), Sakata et al.
patent: 5023370 (1991-06-01), Sakata et al.
patent: 5388209 (1995-02-01), Akagiri
patent: 5424850 (1995-06-01), Inoue et al.
patent: 5434797 (1995-07-01), Barris
patent: 5438643 (1995-08-01), Akagiri et al.
patent: 5467372 (1995-11-01), Nishitani
"APTX100, Technical Data Sheet", Audio Processing Technolgy, (Section 1, pp. 1-28, Section 2, pp. 1-10). (corresponds to references 2 and 4 listed on this PTO-1449), No date.
"apt-X 100 Sub-band ADPCM Digital Audio Data Compression", Audio Processing Technology, pp. 1-76.
"Digital Audio Interface" of Standards of Electronic Industries Association of Japan, Audio Technology Committee, pp. 1-29, (Sep. 1987).
"APTX100ED Digital Audio Coding IC", Audio Processing Technology, No date.

Affiliated with

Also associated with

Rating

Multiple channel multiplexing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple channel multiplexing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple channel multiplexing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1770125