Reverse checksum method for telecommunication systems

Details Reverse checksum method for telecommunication systems Reverse checksum method for telecommunication systems

1995-08-31

1997-10-07

Baker, Stephen M.

Excavating

H03M 1300

Patent

active

056755910

ABSTRACT:
A method for synchronizing communication between a transmitting unit (102) and a receiving unit (104) in a telecommunication system (100) includes calculating a reverse checksum for the received data. At the transmitting unit (102), data including a length indicator is serially transmitted. At the receiving unit (104), the data are received and stored in a buffer. A checksum is calculated beginning with the last-received data while maintaining a length count. When the checksum verifies and when the length count matches the transmitted length indicator, the received data is considered valid and communication is considered synchronized.

REFERENCES:
patent: 4574362 (1986-03-01), Spindel et al.
patent: 4698805 (1987-10-01), Sasuta et al.
patent: 5010553 (1991-04-01), Scheller et al.
patent: 5111465 (1992-05-01), Edem et al.
patent: 5495416 (1996-02-01), Buchwitz et al.
European Telecommunication Standard, Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common Interface, Part 4: Data Link Control Layer, PR ETS 300 175-4, 2nd ed., Draft Jan. 1995, pp. 1-157.

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