Apparatus and method for interfacing between A/V system and portable device

摘要

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.

主权项

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.