INPUT AND OUTPUT SWITCHING DEVICE AND INPUT AND OUTPUT SWITCHING METHOD
First Claim
Patent Images
1. An input and output switching device comprising:
- a first interface which is wirelessly connected to an external transmitting and receiving device, and at least transmits video data to, and receives audio data and a control signal from, the connected external transmitting and receiving device;
a second interface which is connected to an external transmitting device, and at least receives video and audio data from the external transmitting device;
a third interface which is connected to an external audio output device, and transmits audio data;
an audio selector which switches a path through which the audio data is to be transmitted to the external audio output device;
a control unit configured to instruct said audio selector to switch the path, based on the control signal received by said first interface; and
an audio data extraction unit configured to extract audio data from the video and audio data received by said second interface,wherein, when a first instruction signal for selecting said first interface is received as the control signal;
(a-i) said first interface receives the audio data from the external transmitting and receiving device, and outputs the received audio data to said audio selector;
(a-ii) said control unit is configured to issue, to said audio selector, a first input selection instruction for selecting said first interface as an input of said audio selector;
(a-iii) said audio selector outputs, to said third interface, the audio data outputted from said first interface, when the first input selection instruction is received from said control unit; and
(a-iv) said third interface outputs, to the external audio output device, the audio data outputted by said audio selector, andwhen a second instruction signal for selecting said second interface is received as the control signal;
(b-i) said second interface receives the video and audio data from the external transmitting device, and outputs the received video and audio data to said audio data extraction unit;
(b-ii) said audio data extraction unit extracts the audio data from the video and audio data received from said second interface, and outputs the extracted audio data to said audio selector;
(b-iii) said control unit is configured to issue, to said audio selector, a second input selection instruction for selecting said second interface as the input of said audio selector;
(b-iv) said audio selector outputs, to said third interface, the extracted audio data outputted from said audio data extraction unit, when the second input selection instruction is received from said control unit;
(b-v) said third interface outputs, to the external audio output device, the audio data outputted from said audio selector; and
(b-vi) said first interface outputs, to the external transmitting and receiving device, the video and audio data received from the external transmitting device.
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Abstract
In the wireless HDMI converter, appropriate audio data input switching is performed, and, when an instruction is received, an audio data extraction unit extracts audio data from video and audio data received by an HDMI input interface from an STB, and an optical audio output interface outputs the extracted audio data to a home theater, thereby avoiding failure of wireless communication by a wireless interface or deterioration of the quality of such wireless communication.
41 Citations
11 Claims
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1. An input and output switching device comprising:
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a first interface which is wirelessly connected to an external transmitting and receiving device, and at least transmits video data to, and receives audio data and a control signal from, the connected external transmitting and receiving device; a second interface which is connected to an external transmitting device, and at least receives video and audio data from the external transmitting device; a third interface which is connected to an external audio output device, and transmits audio data; an audio selector which switches a path through which the audio data is to be transmitted to the external audio output device; a control unit configured to instruct said audio selector to switch the path, based on the control signal received by said first interface; and an audio data extraction unit configured to extract audio data from the video and audio data received by said second interface, wherein, when a first instruction signal for selecting said first interface is received as the control signal; (a-i) said first interface receives the audio data from the external transmitting and receiving device, and outputs the received audio data to said audio selector; (a-ii) said control unit is configured to issue, to said audio selector, a first input selection instruction for selecting said first interface as an input of said audio selector; (a-iii) said audio selector outputs, to said third interface, the audio data outputted from said first interface, when the first input selection instruction is received from said control unit; and (a-iv) said third interface outputs, to the external audio output device, the audio data outputted by said audio selector, and when a second instruction signal for selecting said second interface is received as the control signal; (b-i) said second interface receives the video and audio data from the external transmitting device, and outputs the received video and audio data to said audio data extraction unit; (b-ii) said audio data extraction unit extracts the audio data from the video and audio data received from said second interface, and outputs the extracted audio data to said audio selector; (b-iii) said control unit is configured to issue, to said audio selector, a second input selection instruction for selecting said second interface as the input of said audio selector; (b-iv) said audio selector outputs, to said third interface, the extracted audio data outputted from said audio data extraction unit, when the second input selection instruction is received from said control unit; (b-v) said third interface outputs, to the external audio output device, the audio data outputted from said audio selector; and (b-vi) said first interface outputs, to the external transmitting and receiving device, the video and audio data received from the external transmitting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An input and output switching method performed by an input and output switching device that includes:
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a first interface which is wirelessly connected to an external transmitting and receiving device, and at least transmits video data to, and receives audio data and a control signal from, the connected external transmitting and receiving device; a second interface which is connected to an external transmitting device, and at least receives video and audio data from the external transmitting device; a third interface which is connected to an external audio output device, and transmits audio data; an audio selector which switches a path through which the audio data is to be transmitted to the external audio output device; a control unit configured to instruct the audio selector to switch the path, based on the control signal received by the first interface; and an audio data extraction unit configured to extract audio data from the video and audio data received by the second interface, said input and output switching method comprising; (a) the following performed when a first instruction signal for selecting the first interface is received as the control signal; (a-i) receiving the audio data from the external transmitting and receiving device, and outputting the received audio data to the audio selector, performed by the first interface; (a-ii) issuing a first input selection instruction to the audio selector performed by the control unit, the first input selection instruction being for selecting the first interface as an input of the audio selector; (a-iii) outputting the audio data outputted from the first interface, to the third interface, performed by the audio selector, when the first input selection instruction is received from the control unit; and (a-iv) outputting the audio data outputted by the audio selector, to the external audio output device, performed by the third interface; and (b) the following performed when a second instruction signal for selecting the second interface is received as the control signal; (b-i) receiving the video and audio data from the external transmitting device, and outputting the received video and audio data to the audio data extraction unit, performed by the second interface; (b-ii) extracting the audio data from the video and audio data received from the second interface, and outputting the extracted audio data to the audio selector, performed by the audio data extraction unit; (b-iii) issuing a second input selection instruction to the audio selector, performed by the control unit, the second input selection instruction being for selecting the second interface as the input of the audio selector; (b-iv) outputting the extracted audio data to the third interface, performed by the audio selector, when the second input selection instruction is received from the control unit, the extracted audio data being outputted from the audio data extraction unit; (b-v) outputting the audio data outputted from the audio selector, to the external audio output device, performed by the third interface; and (b-vi) outputting the video and audio data received from the external transmitting device, to the external transmitting and receiving device, performed by the first interface.
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Specification