U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method and apparatus for concurrent calculation of cyclic redundancy checks

Patent 7613991 Issued on November 3, 2009. Estimated Expiration Date: Icon_subject February 12, 2027. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3634883

3798597

Data processor reorder random access memory
Patent #: 3943347
Issued on: 03/09/1976
Inventor: Martinson

Discrimination during reading of data prerecorded in different codes
Patent #: 4151565
Issued on: 04/24/1979
Inventor: Mazzola

Digital signal transmission method
Patent #: 4215335
Issued on: 07/29/1980
Inventor: Doi ,   et al.

Bit serial encoder
Patent #: 4410989
Issued on: 10/18/1983
Inventor: Berlekamp

Complementary metal-insulated semiconductor memory decoder
Patent #: 4455629
Issued on: 06/19/1984
Inventor: Suzuki ,   et al.

Memory circuit
Patent #: 4520463
Issued on: 05/28/1985
Inventor: Okumura

Coding, detecting or correcting transmission error system
Patent #: 4566105
Issued on: 01/21/1986
Inventor: Oisel ,   et al.

Encoding method for error correction
Patent #: 4598403
Issued on: 07/01/1986
Inventor: Odaka

More ...

Inventor

Assignee

Application

No. 11674096 filed on 02/12/2007

US Classes:

714/807Check character

Examiners

Primary: Baker, Stephen M

Attorney, Agent or Firm

International Class

H03M 13/09

Abstract

Circuits and methods provide the concurrent calculation of CRC bits for messages from different channels, where one part of a message is received at a time. Context buffers store certain state variables of the CRC calculation for each channel. The context buffers output data in a synchronized manner with the input data so that the proper calculations are done and the proper data is available at the appropriate times.

Other References

  • Derby, J., “High-Speed CRC Computation Using State-Space Transformations” 2001 GLOBECOM, Nov. 2001, pp. 166-170.
PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$16.95more info
 
Sign InRegister
Username  
Password   
forgot password?