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. 22, 2014
Filed:
Feb. 25, 2010
Sanjeev Ranganathan, Bangalore, IN;
Shyam Somayajula, Bangalore, IN;
Srinath Sridharan, Bangalore, IN;
Arnold D'souza, Bangalore, IN;
Ramkishore Ganti, Bangalore, IN;
Lionel Cimaz, Pleumeleuc, FR;
Sanjeev Ranganathan, Bangalore, IN;
Shyam Somayajula, Bangalore, IN;
Srinath Sridharan, Bangalore, IN;
Arnold D'Souza, Bangalore, IN;
Ramkishore Ganti, Bangalore, IN;
Lionel Cimaz, Pleumeleuc, FR;
ST-Ericsson SA, Plan-les-Ouates, CH;
ST-Ericsson PVT. Ltd., New Delhi, IN;
Abstract
Systems and methods for a low pin architecture to couple speakers with integrated circuits are disclosed herein. In an implementation, the low pin architecture facilitates in reducing the required pin interfaces to couple a low power speaker, a high power speaker, and earphone speakers with integrated circuits (ICs). For this, the high power speaker can be cross-coupled between the pin interfaces that are coupled to the low power speaker and the earphone speakers. These pin interfaces are driven by corresponding driver circuits. In said implementation, some of the driver circuits can be shared to drive multiple pin interfaces. These shared driver circuits include a combined cascode circuit having a first cascode circuit integrated with a second cascode circuit to reliably and selectively drive one or more of the pin interfaces.