Display apparatus, method for controlling display apparatus, and electronic apparatus

A display apparatus includes a display unit including display elements and light detection elements, a light emitting unit including a light emitting element, a first controller for controlling the light emitting element, a second controller for selectively controlling the light detection elements,...

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Bibliographic Details
Main Author OKINO KAZUNORI
Format Patent
LanguageEnglish
Published 21.01.2010
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CALCULATING
COMPUTING
COUNTING
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
SEALS
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Summary:A display apparatus includes a display unit including display elements and light detection elements, a light emitting unit including a light emitting element, a first controller for controlling the light emitting element, a second controller for selectively controlling the light detection elements, a signal processing unit for processing a detection signal obtained by detecting light emitted from the light emitting unit using the light detection elements and acquiring coordinate information, and a clock generator for providing a base frequency to the signal processing unit and the first and second controllers. The first controller causes the light emitting element to emit light during a signal light emission period and stop emission of the light during a light emission stop period, and the first controller superposes the base frequency on a signal serving as the coordinate information and causes the light emitting element to emit light during the signal light emission period.
Bibliography:Application Number: US20090459842