Abstract: Practical speaker connection is identified using a device having a sound channel of a 5.1 channel or 7.1 channel, and a device is provided that can easily reproduce the optimum multiple channels. Actual speaker arrangement can be identified by, for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.

Abstract: Practical speaker connection is identified using a device having a sound channel of a 5.1 channel or 7.1 channel, and a device is provided that can easily reproduce the optimum multiple channels. Actual speaker arrangement can be identified by, for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.

Abstract: In a system in which an image signal is transmitted from a source device to a sink device and the sink device (or source device) supplies power to the source device (or sink device), power saving of standby power supplied by the sink device (or source device) is realized. There is a feature that a sink device or a source device detects connection with the other device, starts the supply of standby power, confirms that the standby power does not flow or confirms that message exchange with the other device is possible even if the standby power is temporarily stopped, and stops the supply of the standby power.

Abstract: A video transmitter apparatus for transmitting video information to a video receiver apparatus, comprises: a compressor portion for compressing the video signal; and a transmitter portion for transmitting the video information compressed in the compressor portion, wherein the compressor portion and the transmitter portion are controlled, upon basis of a condition of displaying the video information on the video receiver apparatus. And, a video receiver apparatus for receiving video information, which is transmitted from a video transmitter apparatus, comprises: a receiver portion for receiving the video signal; a processor portion for processing the video information, which is received by the receiver portion; and a display portion for displaying the video information, which is processed in the processor portion, wherein a display condition of the video information on the display portion is transmitted to the video transmitter apparatus.

Abstract: In prior art documents, no consideration is given as to how to more faithfully preserve image (here and subsequently also termed “video”) data of larger size during transmission. Provided is an image transmission device for transmission of image data, characterized by having a compression processor for compressing image data, and an output section for outputting compressed data having been compressed by the compression processor, the output section outputting the compressed data separately during a first interval and a second interval different from the first interval.

Abstract: A video transmission system, in which a transmission device, a video signal source, and a video reception device are connected with each other via HDMI (High-Definition Multimedia Interface) which transmits uncompressed video signal; the transmission device verifying whether or not the video signal source and the video reception device have a function of transmitting/receiving a message and enabling the function of transmitting/receiving the message between the video signal source and the video reception device when both the video signal source and the video reception device have the function of transmitting/receiving the message; and the function of transmitting/receiving the message between the video signal source and the video reception device being terminated when HPD (Hot Plug Detect) signal indicated by the video reception device is set to “L” level.

Abstract: According to the present invention, even when the operation requested through the second transmission path (or first transmission path) cannot be performed, it is possible to perform the requested operation by using the function of the device coupled to the first transmission path (or second transmission path).

Abstract: According to our invention, linked operation between a monitor apparatus for displaying images, and a set-top box for transmitting image signals to the monitor apparatus via a required interface, can be achieved properly, even if both units are constructed in casings separate from each other. The monitor apparatus uses a CEC line to transmit a CEC vendor command including at least a code associated with unit information, and the set-top box apparatus transmits the CEC vendor command including at least the code associated with the unit information. Upon receiving the vendor command from the set-top box apparatus, the monitor apparatus switches to the linked operation with the set-top box.

Abstract: Provided is a system for supplying a power from a sink device to a source device. Not only the source device but also a cable or a repeater device to be connected thereto has compatibility in power supply. A physical address obtained from information of an EDID memory forms a base of CEC message exchange, but a physical address of the cable or repeater device is overlapped with the source device or unknown. The cable or a repeater device uses changes the type of a message while using the same physical address as the source device or use such a message having the physical address information of the source device is described in a parameter of the message using the unknown physical address. The message having a supply or reception current for each device described therein is exchanged with the sink device or the source device to adjust current reception.

Abstract: The present invention is intended to permit both real-time display of a picture represented by a non-compressed video signal on a television and display of a picture represented by a compressed video signal at any desired time by simultaneously transmitting the compressed video signal and non-compressed video signal via one interface. An STB packetizes a compressed video signal, and multiplexes the compressed video signal and a blanking signal combined with a non-compressed video signal. Thus, both the video signals are transmitted simultaneously. A picture represented by the non-compressed video signal is displayed on a television in real time. The compressed video signal is stored in a storage medium incorporated in the television, read at any user's desired time, and decoded so that a picture represented by the compressed video signal can be viewed at the user's desired time.

Abstract: An image transmission device compresses and transmits image data to be sent and cannot correct errors occurring on the transmission path when image data to be transmitted is larger than a currently prescribed image size. In an image receiving device which receives compressed image data, data to be inputted is inputted by switching between first periods, during which the amount of data transmitted per prescribed time interval is a first data transmission amount, and second periods, during which the amount of data transmitted per prescribed time interval is less than the first data transmission amount. Compressed image data is inputted during the first periods, and error correction codes are inputted during the second periods, and a control unit expands the output of an error detection unit by means of an expansion unit and outputs the same.

Abstract: A technique is provided for using, in a wireless video transmission device and a plurality of wireless video reception devices which intermittently perform signal reception processing within standby periods, a human body detection unit to accelerate the start-up of the wireless video transmission and reception devices. When the presence of a person is detected by the human body detector, a person detection signal is sent to a wireless video reception device or the transmission device to thereby limit usable communication channel candidates in number. The limited number of usable channel candidates are then used to perform intermittent signal reception, thereby shortening the searching time cycle of such intermittent reception within a standby period, thus lessening the startup time from the standby state between the wireless video transmission and reception devices and also reducing standby power thereof.

Abstract: According to our invention, linked operation between a monitor apparatus for displaying images, and a set-top box for transmitting image signals to the monitor apparatus via a required interface, can be achieved properly, even if both units are constructed in casings separate from each other. The monitor apparatus uses a CEC line to transmit a CEC vendor command including at least a code associated with unit information, and the set-top box apparatus transmits the CEC vendor command including at least the code associated with the unit information. Upon receiving the vendor command from the set-top box apparatus, the monitor apparatus switches to the linked operation with the set-top box.

Abstract: A technique is offered which is applied to a system for wirelessly sending and receiving control commands and which permits mutual communications owing to the control commands between a wireless video transmitter and wireless video receivers to be operated stably with low delay. The transmitter makes a decision as to whether commands received from the receivers are certain commands. If so, the transmitter assigns transmissible periods, in which the receivers can send commands, more preferentially to the wireless video receiver that has sent out the certain commands than the other wireless video receivers.

Abstract: Provided is a system for supplying a power from a sink device to a source device. Not only the source device but also a cable or a repeater device to be connected thereto has compatibility in power supply. A physical address obtained from information of an EDID memory forms a base of CEC message exchange, but a physical address of the cable or repeater device is overlapped with the source device or unknown. The cable or a repeater device uses changes the type of a message while using the same physical address as the source device or use such a message having the physical address information of the source device is described in a parameter of the message using the unknown physical address. The message having a supply or reception current for each device described therein is exchanged with the sink device or the source device to adjust current reception.

Abstract: Video processing apparatus and method including a process for switching a 2D program and a 3D video program. The method has the steps of, for example: inputting a 3D video signal and a 2D video signal; discriminating whether the video signal which is inputted is the 3D video signal or the 2D video signal; and converting a clock frequency of the video signal which is determined as a 2D video signal.

Abstract: A video display system, having a reproduce apparatus, which is configured to reproduce content, thereby to output, and a display apparatus, which is configured to display the content outputted from the reproduce apparatus, wherein said display apparatus, when being inputted therein a 3D content, including the 3D video therein, is inputted from the reproduce apparatus, transmits a message for stopping reproduction of the 3D content and a message for suppressing the output of the message for prompting the preparation of the viewing/listening of the 3D video, to the reproduce apparatus, and presents the message for prompting the preparation of the viewing/listening of the 3D video, when receiving an instruction of reproducing the 3D content from a user, transmits a message for reproducing the 3D content to the reproduce apparatus, and is the reproduce apparatus, when receiving the message for stopping the reproduction of the 3D content, stops the reproduction of the 3D content, and when receiving the message for

Abstract: A video transmitting apparatus including: a first register that is set when receiving a CEC (Consumer Electronics Control) message which is transmitted by a video signal source and is reset in response to a leading edge of a predetermined voltage that is supplied from said video signal source; and a second register which reads an EDID (Extended Display Identification Data) of a video displaying apparatus, is set when a decision is made that said video displaying apparatus is a predetermined video displaying apparatus, and is reset when a state where an HPD (Hot Plug Detect) is in a state of low has continued for a predetermined period of time or longer, wherein when both of said first and second registers have been set, a determination is made that said video signal source, said video transmitting apparatus, and said video displaying apparatus have been connected.

Abstract: When a reproduction device and a display device are separated, there is the risk that it will not be possible to appropriately overly menu images or the like on a 3D video signal in the reproduction device. This reproduction method, which outputs a video signal generated in a reproduction device to a display device, has: a step for reproducing a video signal; a step for generating image information to be superimposed on the reproduced video signal; a step for superimposing the generated image information on the reproduced video signal; a step for outputting the video signal to which the image information has been superimposed; a step for reading information relating to the display device from the display device; and a step for acquiring information relating to the state of the display device from the display device.

Abstract: Also in a video system in which a device responding to a multiple screen display function and a non-responding device are mixedly present, a communication message for a collaboration of the device which performs a multiple screen display operation is realized without exerting an influence on operations of the non-responding device. A video device including two or more video input ports and capable of simultaneously receiving videos output from multiple video source devices connected to the video input ports is configured so as to perform a predetermined filtering operation or message conversion when transmitting to the other video input ports a communication message for video device control to be converted through the video input ports.