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:
Jul. 13, 1999
Filed:
Feb. 05, 1997
Kevin J Shuholm, Grass Valley, CA (US);
Joey L Rainbolt, Rough & Ready, CA (US);
Tektronix, Inc., Wilsonville, OR (US);
Abstract
A system and method for synchronous switching of digital audio data channels while maintaining block alignment between the switched digital audio signals at an output separates status and user bits from audio data and validity bits for each digital audio signal, storing the status and user bits in respective memories for each digital audio data channel. The audio data and validity bits for each digital audio data channel are input via a data first-in, first-out buffer to an audio multiplexer. The status and user bits from the memories for each digital audio data channel are read out by a system clock in synchronization with a system block signal and input to a status/user multiplexer. A selector provides control signals to the multiplexers to select the digital audio data channel to provide to an output transmitter. The status and user bits are combined with the audio data and validity bits in the output transmitter in synchronization with the system block start signal to provide a digital audio signal output that maintains block alignment between the switched digital audio signals at the output.