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US Patent 10474249 Touch sensing apparatus and method of operating the same

Patent 10474249 was granted and assigned to FlatFrog Laboratories on November, 2019 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent
1

Patent attributes

Current Assignee
FlatFrog Laboratories
FlatFrog Laboratories
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
104742491
Patent Inventor Names
Christer Fahraeus1
Henrik Wall1
Ola Wassvik1
Tomas Christiansson1
Date of Patent
November 12, 2019
1
Patent Application Number
160086161
Date Filed
June 14, 2018
1
Patent Citations
‌
US Patent 10013107 Data processing in relation to a multi-touch sensing apparatus
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US Patent 10019113 Tomographic processing for touch detection
Patent Citations Received
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US Patent 12086362 Optical component
5
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US Patent 11893189 Touch-sensing apparatus
6
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7
Patent Primary Examiner
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Chad M Dicke
1
Patent abstract

A touch sensing apparatus includes a group of emitters arranged to emit light to illuminate at least part of the touch surface, a light detector arranged to receive light from the group of emitters, and a processing element. Each emitter is controlled to transmit a code by way of the emitted light such that the code identifies the respective emitter. The codes may at least partly be transmitted concurrently. The codes may be selected such that a value of an autocorrelation of each code is significantly higher than a value of a cross-correlation between any two codes of different emitters. The processing element processes an output signal from the light detector to separate the light received from the individual emitters based on the transmitted codes, and to determine the position of the object/objects based on the light received from the individual emitters.

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