Signal processor for a sub-band coding system

Details Signal processor for a sub-band coding system Signal processor for a sub-band coding system

1994-04-08

1996-04-23

Chin, Stephen

Pulse or digital communications

Pulse code modulation

Correcting or reducing quantizing errors

375241, 381 30, H04B 1404

Patent

active

055110940

ABSTRACT:
A signal processor for a sub-band coding system includes a selector receiving various data, i.e., sample data, allocation information, synchronization and system information during encoding, changing the various data into appropriate forms for efficient encoding the various data and generating same, a memory temporarily storing various data received from the selector, an operator for selectively scaling and quantizing sample data and dequantizing and descaling encoded data, classifier providing outputting the operated data, allocation information input to the operating means, and system information as encoded data in accordance with the frame format of a general sub-band coding system, or receiving and classifying the encoded data into system information, allocation information and operated data, and a control signal generator for generating control signals for controlling the encoding and decoding of the selector, memory, operator and classifier circuits. Therefore, since encoding and decoding are performed with a single signal processor circuit, the circuitry advantageously can be simplified.

REFERENCES:
patent: 5105463 (1992-04-01), Veldhuis et al.
patent: 5214678 (1993-05-01), Rault et al.
patent: 5301255 (1994-04-01), Nagai et al.

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