Signal processing apparatus and method thereof
AssigneeCanon Kabushiki Kaisha
InventorNoriaki Suzuki
Life of this patent
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Abstract
A video audio system includes an audio processing apparatus capable of processing audio signals input from a plurality of input sources and a video processing apparatus capable of displaying a video image based on a video signal input from a selected input source. The video processing apparatus executes image processing based on the selected input source type notified by the audio processing apparatus, and transmits delay time information required for the image processing. The audio processing apparatus delays an audio signal based on the delay time information transmitted from the video processing apparatus.
Claims11
A signal processing apparatus connectable to a display apparatus and connectable to a plurality of input source devices, the signal processing apparatus having an audio processing unit, and comprising:
- a selection unit configured to select an input source device from the plurality of input source devices connected to the signal processing apparatus in accordance with a user's selecting instruction in a case where the plurality of input source devices are connected to the signal processing apparatus;
- a transmission unit configured to transmit a device type of the selected input source device to the display apparatus;
- a receiving unit configured to receive, from the display apparatus, information concerning delay time for displaying a video based on a video signal output from the selected input source device, the delay time being set according to the device type of the selected input source device;
- a delay unit configured to delay an audio signal input from the selected input source device based on the information received by the receiving unit;
- and
- an output unit configured to output the audio signal delayed by the delay unit,
- wherein the selection unit is configured to automatically select a connected input device in response to the power of the signal processing apparatus being turned on in a case where only one input source device is connected to the signal processing apparatus.
A system comprising a signal processing apparatus and a display apparatus connected to the signal processing apparatus, the signal processing apparatus being connectable to a plurality of input source devices and having an audio processing unit, the signal processing apparatus comprising:
- a selection unit configured to select an input source device from the plurality of input source devices connected to the signal processing apparatus in accordance with a user's selecting instruction in a case where the plurality of input source devices are connected to the signal processing apparatus;
- a transmission unit configured to transmit a device type of the selected input source device to the display apparatus;
- a receiving unit configured to receive, from the display apparatus, information concerning delay time for displaying a video based on a video signal output from the selected input source device, the delay time being set according to the device type of the selected input source device;
- a delay unit configured to delay an audio signal input from the selected input source device based on the information received by the receiving unit;
- and
- an output unit configured to output the audio signal delayed by the delay unit,
- wherein the selection unit is configured to automatically select a connected input device in response to the power of the signal processing apparatus being turned on in a case where only one input source device is connected to the signal processing apparatus.
A method for controlling a signal processing apparatus connectable to a display apparatus and connectable to a plurality of input source devices, the signal processing apparatus having an audio processing unit, the method comprising:
- selecting an input source device from the plurality of input source devices connected to the signal processing apparatus in accordance with a user's selecting instruction in a case where the plurality of input source devices are connected to the signal processing apparatus;
- transmitting a device type of the selected input source device to the display apparatus;
- receiving, from the display apparatus, information concerning delay time for displaying a video based on a video signal input from the selected input source device, the delay time being set according to the device type of the selected input source device;
- delaying an audio signal input from the selected input source device based on the received information;
- and
- outputting the delayed audio signal,
- wherein the selecting includes automatically selecting a connected input device in response to the power of the signal processing apparatus being turned on in a case where only one input source device is connected to the signal processing apparatus.
Dependencies are inferred from the claim text.