US 2014/0193134 A1Published application

Content data transmission system and content data transmission method

AssigneeD&M Holdings, Inc.

InventorsKoji Maeda, Masaichi Yoshida, Yuji Ota

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Abstract

[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.

Claims9

Dependent claims

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;
and
a reproduction apparatus control part for controlling the overall content reproduction apparatus, and controlling the reproduction apparatus operation clock signal;
and
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 transmission cable;
an output part for operating based on the output apparatus reference operation clock signal, and outputting the content data to an outside;
and
an 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.

16 more elements

A content data transmission system, comprising:

a content reproduction apparatus for reproducing content data;
and
a content output apparatus for applying signal processing to the content data reproduced and transmitted by the content reproduction apparatus, and outputting the content data, wherein:
the content reproduction apparatus comprises:
a reproduction apparatus reference operation clock generation part for generating a reference operation clock signal;
a reproduction apparatus data input/output part for operating based on a reproduction apparatus operation clock signal, outputting the content data via a multimedia transmission cable, receiving an operation clock signal transmitted from the content output apparatus via the multimedia 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 reference operation clock signal generated by the reproduction apparatus reference operation clock generation part and the received operation clock signal output by the reproduction apparatus data input/output part into a reproduction apparatus operation clock signal;
a content generation part for operating based on the reproduction apparatus operation clock signal, and generating the content data;
and
a 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 a reference operation clock signal;
an output apparatus data input/output part for generating the operation clock signal to be transmitted to the content reproduction apparatus based on the reference operation clock signal generated by the output apparatus reference operation clock generation part, transmitting the operation clock signal via the multimedia transmission cable to the content reproduction apparatus, 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 reference operation clock signal generated by the output apparatus reference operation clock generation part, and outputting the content data to an outside;
and
an 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 output apparatus data input/output part;
and
the reproduction apparatus control part controls, when the reproduction apparatus data input/output part receives the operation clock signal from the content output apparatus, 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 reproduction apparatus data input/output part into the reproduction apparatus operation clock signal, and controls, when the reproduction apparatus data input/output fails to receive the operation clock signal from the content output apparatus within a predetermined period, 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.

15 more elements

A method of connecting 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 to each other via a multimedia data transmission cable for transmitting the content data and an operation clock transmission cable for transmitting an operation clock signal, thereby transmitting the content data from the content data reproduction apparatus to the content output apparatus, the method comprising:

a step of checking, when connection of the multimedia data transmission cable is detected, whether the content output apparatus is compatible with an output apparatus clock operation mode in which the content reproduction apparatus operates based on an output apparatus reference operation clock signal of the content output apparatus;
a step of changing, when the content output apparatus is compatible with the output apparatus clock operation mode, setting in the content reproduction apparatus so as to operate in the output apparatus clock operation mode;
a step of generating an operation clock signal based on an output apparatus reference operation clock signal, and transmitting the operation clock signal via the operation clock transmission cable to the content reproduction apparatus;
a step of receiving the operation clock signal transmitted via the operation clock transmission cable, and generating a received operation clock signal synchronized with the operation clock signal;
a step of converting the received operation clock signal into a reproduction apparatus operation clock signal;
a step of operating based on the reproduction apparatus operation clock signal, and reproducing the content data;
a step of transmitting the content data via the multimedia transmission cable to the content output apparatus;
a step of receiving the content data transmitted from the content reproduction apparatus via the multimedia transmission cable;
and
a step of operating based on the output apparatus reference operation clock signal, and outputting the content data to an outside.

7 more elements

A method of connecting between 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 to each other via a multimedia data transmission cable for transmitting the content data and an operation clock transmission cable for transmitting an operation clock signal, thereby transmitting the content data from the content data reproduction apparatus to the content output apparatus, the method comprising:

a step of generating, by the content reproduction apparatus, a reproduction apparatus reference operation clock signal;
a step of receiving, by the content reproduction apparatus, an operation clock signal transmitted from the content output apparatus via the operation clock transmission cable, and outputting a received operation clock signal synchronized with the operation clock signal;
a step of converting, by the content reproduction apparatus, any one of the reproduction apparatus reference operation clock signal and the received operation clock signal into a reproduction apparatus operation clock signal;
a step of operating, by the content reproduction apparatus, based on the reproduction apparatus operation clock signal, and reproducing the content data;
a step of operating, by the content reproduction apparatus, based on the reproduction apparatus operation clock signal, and transmitting the content data via the multimedia transmission cable to the content output apparatus;
a step of controlling, by the content reproduction apparatus, the overall content reproduction apparatus, and controlling the reproduction apparatus operation clock signal;
a step of generating, by the content output apparatus, an output apparatus reference operation clock signal;
a step of generating, by the content output apparatus, 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 step of operating, by the content output apparatus, 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;
a step of operating, by the content output apparatus, based on the output apparatus reference operation clock signal, and outputting the content data to an outside;
a step of controlling, by the content output apparatus, 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 an operation clock transmission part;
and
a step of controlling, by the content reproduction apparatus, when receives the operation clock signal from the content output apparatus, 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 controlling, when the operation clock reception part fails to receive the operation clock signal from the content output apparatus within a predetermined period, 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 operation clock signal.

10 more elements

A method of connecting a content reproduction apparatus for reproducing content data and a content output apparatus for applying signal processing to the content data reproduced and transmitted by the content reproduction apparatus, and outputting the content data to each other via a multimedia data transmission cable for transmitting the content data and an operation clock signal, thereby transmitting the content data from the content data reproduction apparatus to the content output apparatus, the method comprising:

a step of generating, by the content reproduction apparatus, a reproduction apparatus reference operation clock signal;
a step of generating, by the content output apparatus, an output apparatus reference operation clock signal;
a step of generating, based on the output apparatus reference operation clock signal, an operation clock signal synchronized with the output apparatus reference operation clock signal to be transmitted from the content output apparatus to the content reproduction apparatus, and transmitting the operation clock signal via the multimedia transmission cable to the content reproduction apparatus;
a step of receiving, by the content reproduction apparatus, the operation clock signal transmitted from the content output apparatus via the multimedia operation clock transmission cable, and outputting a reproduction apparatus received operation clock signal synchronized with the operation clock signal;
a step of converting any one of the reproduction apparatus reference operation clock signal and the reproduction apparatus received operation clock signal into a reproduction apparatus operation clock signal;
a step of operating based on the reproduction apparatus operation clock signal, and reproducing the content data;
a step of operating based on the reproduction apparatus operation clock signal, and transmitting the reproduced content data via the multimedia transmission cable to the content output apparatus;
a step of operating, by the content output apparatus, 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;
and
a step of operating based on the output apparatus reference operation clock signal, and outputting the content data to an outside,
wherein the step of converting any one of the reproduction apparatus reference operation clock signal and the reproduction apparatus received operation clock signal into the reproduction apparatus operation clock signal comprises converting, when the content reproduction apparatus receives the operation clock signal from the content output apparatus, the reproduction apparatus received operation clock signal into the reproduction apparatus operation clock signal, and converting, when the content reproduction apparatus fails to receive the operation clock signal from the content output apparatus within a predetermined period, the reproduction apparatus reference operation clock signal into the reproduction apparatus operation clock signal.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/235,836Filed 27 Jul 2012
Priority: JP 2011-16672829 Jul 2011
Published: 10 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04N 5/775
Interface circuits between an apparatus for recording and another apparatus: between a recording apparatus and a television receiver
G11B 20/10009
Digital recording or reproducing: improvement or modification of read or write signals
G11B 20/10222
Improvement or modification of read or write signals: clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
H04N 21/43072
Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the…:…

Family

US 9,154,726 B2Related patent
US 2014/0193134 A1This patent

From the US filing history. Foreign family members aren’t listed.

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