Content data transmission system and content data transmission method

摘要

[Problem] In a system for transmitting content data from a content reproducing apparatus to a content output apparatus, no complicated signal processing is required, setting change operations can be simplified, and the degradation of sound quality and the degradation of picture quality of video data are prevented. [Solution] There are included: a content reproducing apparatus that receives an operation clock signal from a content output apparatus via an operation clock transmission cable, operates on the basis of the operation clock signal, and transmits content data, which has been reproduced by a reproducing unit, to the content output apparatus via a multimedia transmission cable; and the content output apparatus that generates, on the basis of an output apparatus operation clock signal, the operation clock signal to be transmitted to the content reproducing apparatus, transmits the operation clock signal to the content reproducing apparatus reproducing apparatus via the operation clock transmission cable, receives the content data from the content reproducing apparatus via the multimedia transmission cable, and performs a signal processing of the received content data for output to an external apparatus.

主权项

1. A content data transmission system, comprising:
a content reproduction apparatus for reproducing content data; and a content output apparatus for inputting the content data reproduced by the content reproduction apparatus, applying signal processing to the content data, and outputting the content data, wherein: the content reproduction apparatus comprises:
a reproduction apparatus reference operation clock generation part for generating a reproduction apparatus reference operation clock signal;an operation clock reception part for receiving an operation clock signal transmitted from the content output apparatus via an operation clock transmission cable, and outputting a received operation clock signal synchronized with the operation clock signal;a reproduction apparatus operation clock conversion part for converting anyone of the reproduction apparatus reference operation clock signal and the received operation clock signal into a reproduction apparatus operation clock signal;a content reproduction part for operating based on the reproduction apparatus operation clock signal, and reproducing the content data;a data output part for operating based on the reproduction apparatus operation clock signal, and transmitting the content data via a multimedia data transmission cable to the content output apparatus; anda reproduction apparatus control part for controlling the overall content reproduction apparatus, and controlling the reproduction apparatus operation clock signal; the content output apparatus comprises:
an output apparatus reference operation clock generation part for generating an output apparatus reference operation clock signal;an operation clock transmission part for generating the operation clock signal to be transmitted to the content reproduction apparatus based on the output apparatus reference operation clock signal, and transmitting the operation clock signal via the operation clock transmission cable to the content reproduction apparatus;a data input part for operating based on the output apparatus reference operation clock signal, and inputting the content data transmitted from the content reproduction apparatus via the multimedia data transmission cable;an output part for operating based on the output apparatus reference operation clock signal, and outputting the content data to an outside; andan output apparatus control part for controlling the overall content output apparatus, and providing control to transmit, to the content reproduction apparatus, the operation clock signal synchronized with the output apparatus reference operation clock signal from the operation clock transmission part; when the operation clock transmission part transmits the operation clock signal to the operation clock reception part, the output apparatus control part of the content output apparatus controls the operation clock transmission part so as to transmit the operation clock signal superimposed with a predetermined signal; and the reproduction apparatus control part determines whether the predetermined signal is superimposed on the operation clock signal received by the operation clock reception part, when the predetermined signal is superimposed, controls the reproduction apparatus operation clock conversion part so that the reproduction apparatus operation clock conversion part converts the received operation clock signal output by the operation clock reception part into the reproduction apparatus operation clock signal, and when the predetermined signal is not superimposed, controls the reproduction apparatus operation clock conversion part so that the reproduction apparatus operation clock conversion part converts the reproduction apparatus reference operation clock signal generated by the reproduction apparatus reference operation clock generation part into the reproduction apparatus operation clock signal.