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:
May. 11, 2010
Filed:
Aug. 26, 2004
Bradley J. Rainbolt, Sunrise, FL (US);
Marc A. Boillot, Plantation, FL (US);
Bradley J. Rainbolt, Sunrise, FL (US);
Marc A. Boillot, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An apparatus () and corresponding methods (FIG.) to facilitate maintaining crypto synchronization while processing communication signals in a communication unit includes a vocoder () configured to convert input audio band signals to vocoder output frames; a crypto processor () configured to encrypt the vocoder output frames to provide encrypted output frames; and a synchronizer () configured to substitute in a predetermined manner synchronization information corresponding to an encryption state of the crypto processor for a portion of the encrypted data in a portion of the encrypted output frames to provide resultant output synchronization frames suitable for synchronizing a decryption process at a target communication unit.