System for parity calculation based on arithemtic difference bet

Details System for parity calculation based on arithemtic difference bet System for parity calculation based on arithemtic difference bet

Filed on

1995-03-10

Date issued

1998-06-16

Examiner

Elmore, Reba I.

Patent Class

Excavating

Other Related Categories

371 30, H03M 1300

Type

Patent

Status

active

Patent number

057682950

Description

ABSTRACT:
A communication system uses a main signal having a plurality of signal frames each of which has first data and a first monitor bit. The first monitor bit in one of the signal frames is determined by the first data in a preceding signal frame which next precedes the one of the signal frames. A data inserting device inserts second data into the main signal. A monitor bit producing device produces a second monitor bit in response to the first and the second data and the first monitor bit. The second monitor bit holds monitor data which have data of first monitor bits which are held in preceding signal frames which precede the one of the signal frames. A monitor bit changing device changes the first monitor bit into the second monitor bit in the one of the signal frames.

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patent: 5483471 (1996-01-01), Adachi

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