Integrated audio decoder system and method of operation

Details Integrated audio decoder system and method of operation Integrated audio decoder system and method of operation

1995-06-07

1997-07-01

Treat, William M.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341110, 341117, 341144, 395872, 395 212, 395 221, 360 27, 360 32, 386 96, H04J 306, H03M 100

Patent

active

056443102

ABSTRACT:
A data processing system (10) is disclosed which comprises a microprocessor host (12) coupled to a decoding system (14). A host interface block (18) receives a bit stream and passes bit stream on to a system decoder block (20). The system decoder block (20) extracts the appropriate data from the bit stream and loads an input buffer (24) or an optional external buffer (26). An audio decoder block (28) retrieves the data from the input buffer (24) and generates scale factor indices, bit per code word values and subband samples which are stored in an arithmetic unit buffer (30). A hardware filter arithmetic unit block (32) retrieves the information from the arithmetic unit buffer (30) and dequantizes, transforms and filters the data to generate PCM output data which is loaded into a PCM buffer (34). The data within the PCM buffer (34) is output by a PCM output block (36) to a digital-to-analog converter (16).

REFERENCES:
patent: 4446490 (1984-05-01), Hoshimi et al.
patent: 4679085 (1987-07-01), Johnson et al.
patent: 4994912 (1991-02-01), Lumelsry et al.
patent: 5280394 (1994-01-01), Murabayashi et al.
patent: 5315584 (1994-05-01), Savary et al.
patent: 5323396 (1994-06-01), Lokhoff
patent: 5394473 (1995-02-01), Davidson
patent: 5420608 (1995-05-01), Choi et al.

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