Adaptive touch sensor control based on identification of attached accessory
First Claim
1. A method of operating a rechargeable touch screen equipped device, the method comprising:
- determining an identity of a coupled battery charger;
reading at least one measure indicative of power being drawn by the rechargeable touch screen equipped device from the coupled battery charger;
checking stored information to determine if there is a record corresponding to the identity and the at least one measure of power being drawn;
when a record is found;
reading configuration information stored in the record and operating a touch sensor at a first frequency based on the configuration information; and
when a record is not found;
selecting a second frequency from a plurality of frequencies and creating a new record in said stored information corresponding to said identity, and corresponding to said measure of power being drawn, said record including configuration information corresponding to said second frequency.
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Accused Products
Abstract
A rechargeable touch sensor equipped device (102) is adapted to identify (1008) each of multiple external charging devices (118, 120, 122, 602) by an ID or other information received through an interface (230, 630) or to infer the identity (1020) based on location information derived from received wireless signals, the time and/or day. The rechargeable touch sensor equipped device (102) determines (1026) and records (1028) a touch screen operating frequency to be used when coupled to each external charging device (118, 120, 122, 602) at each battery charge state (or other indication of power draw) and in this way mitigates the adverse effect of variable charger generated noise on the operation of the touch screen.
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Citations
20 Claims
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1. A method of operating a rechargeable touch screen equipped device, the method comprising:
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determining an identity of a coupled battery charger; reading at least one measure indicative of power being drawn by the rechargeable touch screen equipped device from the coupled battery charger; checking stored information to determine if there is a record corresponding to the identity and the at least one measure of power being drawn; when a record is found;
reading configuration information stored in the record and operating a touch sensor at a first frequency based on the configuration information; andwhen a record is not found;
selecting a second frequency from a plurality of frequencies and creating a new record in said stored information corresponding to said identity, and corresponding to said measure of power being drawn, said record including configuration information corresponding to said second frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a rechargeable battery; an interface coupled to said rechargeable battery and adapted to couple to each of a plurality of external battery chargers; a touch sensor; a memory; at least one controller coupled to said touch sensor and said rechargeable battery, wherein said at least one controller is configured to; deduce an identity of each of said plurality of external battery charger coupled to said interface; read at least one measure indicative of power being drawn by the apparatus from each of the plurality of external battery chargers; check stored information in said memory to determine if there is a record corresponding to the identity and the power being drawn; when a record is found;
read configuration information stored in the record and operate the touch sensor at a first frequency based on the configuration information;when a record is not found;
select a second frequency from a plurality of frequencies and create a new record in said stored information corresponding to said identity, and corresponding to said at least one measure indicative of power being drawn said including configuration information corresponding to said second frequency. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification