07380150 is referenced by 13 patents and cites 10 patents.

A power management circuit for a system that has combined power supplies from an inductively coupled circuit and from a battery comprises voltage sensing circuitry for sensing the voltage of each of the power supplies. A switching arrangement selectively connects one of the power supplies with a user or with plural users. The switching arrangement is controlled by appropriate control circuitry in response to outputs from the voltage sensing circuitry. The power management makes the best use of energy received over the inductive interface to preserve battery lifetime.

Title
Method for selecting an inductive or battery power supply based on the voltage sensed therefrom for a transponder system
Application Number
10/787611
Publication Number
7380150 (B2)
Application Date
February 25, 2004
Publication Date
May 27, 2008
Inventor
Andreas Hagl
Dachau
DE
Ruediger Ganz
Freising
DE
Herbert Meier
Moosburg
DE
Agent
Frederick J Telecky Jr
W James Brady III
J Dennis Moore
Assignee
Texas Instruments Incorporated
TX, US
IPC
G06F 1/00
View Original Source