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:
Dec. 11, 2001
Filed:
Feb. 08, 1999
Chienchung Chang, San Diego, CA (US);
Way-Shing Lee, San Diego, CA (US);
Robert Opalsky, San Diego, CA (US);
George Pan, San Diego, CA (US);
Karthick Chinnaswami, San Diego, CA (US);
Hanchi David Huang, San Diego, CA (US);
Steven C. Den Beste, San Diego, CA (US);
James Hutchison, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A method and apparatus for communicating both voice and control data between a communication device (such as a cellular phone) and an external accessory (such as a hands-free kit) over a data bus. The method includes formatting a sequence of bits into a repeating sequence of first time slots and second time slots, transmitting the voice data in the first time slot, and transmitting the control data in the second time slot. Notably, a first bit of each of the second time slots comprises a clock bit that alternates between a high value and a low value (e.g. a '1' or a '0') as between consecutive second time slots.