Apparatus and method for interfacing between A/V system and portable device
First Claim
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1. An audio/video (A/V) system capable of controlling an external device as a source of audio and/or video output of the A/V system, said A/V system comprising:
- an interface unit that transmits/receives control information to/from the external device and receives decoded digital multimedia data from the external device;
a digital-to-analog (D/A) conversion unit that converts the received decoded digital multimedia data into an analog audio and/or video signal; and
a control unit that controls the interface unit and the D/A conversion unit such that the received decoded digital multimedia data is converted into the analog signal as audio and/or video output of the A/V system;
wherein the control information transmitted to the external device includes information on a multimedia file as requested from the A/V system and an operation command for controlling an operation on the requested multimedia file;
wherein the control information transmitted from the external device includes information on an operational state associated with the operation; and
wherein the external device decodes the requested multimedia file in accordance with the operation command to generate the decoded digital multimedia data.
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Abstract
An interface apparatus and method for transmission and reception of a control signal and a digital stream between an audio/video (A/V) system and a digital data recording and/or reproducing device are provided. The device for recording and/or reproducing digital data includes: a storage unit storing digital data encoded in a predetermined format; a decoder unit decoding digital data stored in the storage unit; an interface unit transmitting the decoded data to an external device; and a control unit controlling the storage unit, the decoder unit, and the interface unit.
15 Citations
39 Claims
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1. An audio/video (A/V) system capable of controlling an external device as a source of audio and/or video output of the A/V system, said A/V system comprising:
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an interface unit that transmits/receives control information to/from the external device and receives decoded digital multimedia data from the external device; a digital-to-analog (D/A) conversion unit that converts the received decoded digital multimedia data into an analog audio and/or video signal; and a control unit that controls the interface unit and the D/A conversion unit such that the received decoded digital multimedia data is converted into the analog signal as audio and/or video output of the A/V system; wherein the control information transmitted to the external device includes information on a multimedia file as requested from the A/V system and an operation command for controlling an operation on the requested multimedia file; wherein the control information transmitted from the external device includes information on an operational state associated with the operation; and wherein the external device decodes the requested multimedia file in accordance with the operation command to generate the decoded digital multimedia data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An interface apparatus connected between an audio/video (A/V) system and a portable multimedia device for enabling the A/V system to control the portable multimedia device as a source of audio and/or video output of the A/V system, the interface apparatus comprising:
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a first connection unit for connecting the portable multimedia device; a second connection unit for connecting the A/V system; an interface processing unit that transmits/receives control information to/from the portable device via the first connection unit, transmits/receives control information to/from the A/V system via the second connection unit, receives first decoded digital multimedia data from the portable device via the first connection unit, converts the first decoded digital multimedia data of a format outputted from the portable device into second multimedia data of a format complying with a protocol for connection to the A/V system, and transmitting the second multimedia data to the A/V system as audio and/video output of the A/V system via the second connection unit; wherein the control information received from the A/V system includes information on a multimedia file as requested from the A/V system and an operation command for controlling an operation on the requested multimedia file; wherein the control information received from the portable device includes information on an operational state associated with the operation; and wherein the portable device decodes the requested multimedia file in accordance with the operation command to generate the first decoded digital multimedia data. - View Dependent Claims (10, 11, 12, 13, 14, 17)
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15. An interface method between an audio/video (A/V) system and a portable device for enabling the A/V system to control the portable multimedia device as a source of audio and/or video output of the A/V system, the interface method comprising:
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receiving a first control signal from the A/V system through a second connection unit; converting the first control signal into a data format of a first connection unit and transmitting the converted first control signal to the portable device through the first connection unit; receiving a digital multimedia data stream from the portable device through the first connection unit in response to the converted first control signal; converting the received digital multimedia data stream into an analog signal; transmitting the analog signal to the A/V system through the second connection unit; wherein the interface method further comprising; receiving a second control signal from the portable device through the first connection unit; wherein the first control signal includes information on the multimedia file as requested from the A/V system and an operation command for controlling an operation on the requested multimedia file; wherein the second control signal includes information on an operational state associated with the operation; and wherein the portable device decodes the requested multimedia file in accordance with the operation command to generate the digital multimedia data stream transmitted from the portable device. - View Dependent Claims (18)
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16. A non-transitory computer readable medium having embodied thereon a computer program for executing an interface method between an audio/video (A/V) system and a portable device for enabling the A/V system to control the portable multimedia device as a source of audio and/or video output of the A/V system, the interface method comprising:
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receiving a first control signal from the A/V system through a second connection unit; converting the first control signal into a data format of a first connection unit and transmitting the converted first control signal to the portable device through the first connection unit; receiving a digital stream from the portable device through the first connection unit in response to the converted control signal; converting the received digital stream into an analog signal; transmitting the analog signal to the A/V system through the second connection unit; wherein the interface method further comprising; receiving a second control signal from the portable device through the first connection unit; wherein the first control signal includes information on the multimedia file as requested from the A/V system and an operation command for controlling an operation on the requested multimedia file; wherein the second control signal includes information on an operational state associated with the operation; and wherein the portable device decodes the requested multimedia file in accordance with the operation command to generate the digital multimedia data stream transmitted from the portable device.
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19. A digital data recording and/or reproducing apparatus for receiving a control information from an A/V system comprising:
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a storage unit to store digital data encoded in a predetermined format; a decoder unit configured to decode the digital data stored in the storage unit; a first controller configured to support an interface to communicate with an audio system having a second controller; a digital/analog conversion unit configured to convert the decoded digital data into analog data; an output unit configured to output the analog data; a control unit configured to; receive control information from the audio system through the first controller, cause the decoder to decode the stored digital data corresponding to the received control information, transfer the decoded digital data corresponding to the received control information to the audio system, and switch into one of a transmission state transmitting the decoded digital data to the audio system through the first controller and an output state converting the decoded data into the analog data by the digital/analog conversion unit and outputting the converted analog data by the output unit. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of reproducing, through an audio system, a digital data stored in a digital data recording and/or reproducing apparatus for receiving a control information from the audio system, the method comprising:
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receiving a control information from the audio system through the first controller; decoding the stored digital data corresponding to the received control information; and switching into one of a transmission state transmitting the decoded digital data to the audio system through the first controller, and an output state wherein the second mode is the mode in which the decoded digital data is converting the decoded data into the analog data and outputting the converted analog data; and in the transmission state, transferring the decoded digital data corresponding to the received control information to the audio system having a second controller. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification