Display apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasahiro Funada
Life of this patent
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Abstract
A display apparatus, equipped with a common input terminal inputting different video signals, can discriminate the type of an input video signal entered from the common input terminal. The display apparatus includes an input terminal inputting different video signals. A synchronizing signal separation unit separates a synchronizing signal from a video signal entered from the input terminal. A frequency measurement unit measures a frequency of the synchronizing signal. An input signal discrimination unit discriminates the video signal entered from the input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit.
Claims11
A display apparatus comprising:
- an input terminal configured to input different video signals;
- a synchronizing signal separation unit configured to separate a synchronizing signal from a video signal entered from the input terminal;
- a frequency measurement unit configured to measure a frequency of the synchronizing signal;
- and
- an input signal discrimination unit configured to discriminate the video signal entered from the input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit.
A method performed in a display apparatus for discriminating an input signal when a common input terminal is used to input different video signals, wherein the display apparatus includes an input terminal configured to input different video signals;
- a synchronizing signal separation unit configured to separate a synchronizing signal from a video signal entered from the input terminal;
- a frequency measurement unit configured to measure a frequency of the synchronizing signal;
- and an input signal discrimination unit configured to discriminate the video signal entered from the input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit, the method comprising:
- receiving a video signal from the input terminal;
- separating the synchronizing signal from the video signal;
- measuring the frequency of the synchronizing signal;
- and
- discriminating the video signal on the type of synchronizing signal and the frequency measurement result.
A computer readable medium containing computer-executable instructions performed in a display apparatus for discriminating an input signal when a common input terminal is used to input different video signals, wherein the display apparatus includes an input terminal configured to input different video signals;
- a synchronizing signal separation unit configured to separate a synchronizing signal from a video signal entered from the input terminal;
- a frequency measurement unit configured to measure a frequency of the synchronizing signal;
- and an input signal discrimination unit configured to discriminate the video signal entered from the input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit, the computer readable medium comprising:
- computer-executable instructions for receiving a video signal from the input terminal;
- computer-executable instructions for separating the synchronizing signal from the video signal;
- computer-executable instructions for measuring the frequency of the synchronizing signal;
- and
- computer-executable instructions for discriminating the video signal based on the type of synchronizing signal and the frequency measurement result.
Dependencies are inferred from the claim text.