Processing unit

Details Processing unit Processing unit

1997-09-11

1999-12-28

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

341 50, H03M 700

Patent

active

060087447

ABSTRACT:
The configuration of a whitener encoder used in a wireless LAN is simplified, thereby reducing the size of the circuit. The present weight of an n-bit interval is calculated by a counter that counts up when the transmitted data is "1", and counts down when it is "0". The weight for data already sent out is calculated by a counter that counts up when the transmitted data is "1", and counts down when it is "0". Whether or not the transmitted data is inverted is determined by comparing only the most significant bits, which are the sign bits of the counter, with a comparator circuit. A large circuit need not be used.

REFERENCES:
patent: 5592160 (1997-01-01), Bennett et al.
patent: 5608397 (1997-03-01), Soljanin
patent: 5742243 (1998-04-01), Moriyama
patent: 5754587 (1998-05-01), Kawaguchi
Draft Standard IEEE 802.11, "Wireless LAN", Jan. 25, 1996, IEEE, pp. 179-189.

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