The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 1996
Filed:
May. 24, 1994
Applicant:
Inventor:
Hyokang Chang, Potomac, MD (US);
Assignee:
Telogy Networks, Inc., Gaithersburg, MD (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371-55 ; 371-51 ;
Abstract
A codeword forcing technique is applied which provides gradual degradation of an audio output during fading such that analog degradation in a fading signal environment is simulated. The system may be used in conjunction with digital cordless telephones where gradual degradation of a 32 Kbit/s ADPCM signal is obtained by indirectly detecting a transmission bit error rate, The bit error rate detection is accomplished by sensing the occurrence of an invalid all-zero code, Codeword forcing techniques are then applied to compensate for the inaccurate transmission and associated noise level,