Content data transmission system and content data transmission method

摘要

[Problem] In a system that transmits content data from a content replay device to a content output device, to prevent a deterioration in audio quality or video data picture quality while being able to increase the simplicity of a setting-altering operation without requiring complicated signal processing. [Solution] The present invention is provided with: the content replay device, which receives an operation clock signal transmitted from the content output device via an operation clock transmission cable, operates on the basis of the operation clock signal, and transmits content data replayed by a replay unit to the content output device via a multimedia transmission cable; and the content output device, which generates the operation clock signal transmitted to the content replay device on the basis of an output device operation clock signal, transmits the operation clock signal to the content replay device via the operation clock transmission cable, and receives, performs signal processing on, and outputs to an external device the content data transmitted from the content replay device via the multimedia transmission cable.

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 any one 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 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; andthe 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 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.