Panasonic Corporation

Masahiko Mizoguchi

Toshiki Murakami

Akihiro Mitani

Koichi Otsuka

Akifumi Sakamoto

Masazumi Yamada

Mitsuteru Kataoka

Hiroshi Kase

Sako Asayama

Yoshifumi Inoue

Norimichi Kubo

Akihiro Fujita

Nobutaka Nakamae

Teruyuki Tomonari

In an audiovisual system in which a source device and a television are connected via an AV amplifier, even when the AV amplifier is placed in a 'Power Supply Standby State', video/audio signals outputted from the source device can be viewed/listened to on the television without changing the wiring connections between the devices. An AV amplifier () is provided with a data storing means () used for indicating a signal reproduction ability to a source device (). During a 'Power Supply Standby State' of the AV amplifier (), the content of data that is saved in the data storing means () and indicates an audio signal reproduction ability is rewritten into data that indicates not the reproduction ability of the AV amplifier (), but the signal reproduction ability of a television (), thereby producing a state that is equivalent to a state in which the source device () and the television () are directly connected.

Sound reproducing apparatus and audiovisual system

A television set includes: an internal speaker which outputs sound; a memory which holds information; a remote controller receiver which receives an instruction from the outside of the television set; a microcomputer which causes, based on a mode specifying instruction for specifying a sound output mode received by the remote controller receiver, the memory to hold any one of (a) information that indicates a first sound output mode in which sound is outputted from the internal speaker and (b) information that indicates a second sound output mode in which sound is outputted from an external speaker that is a speaker outside the television set; and an HDMI/CEC communication unit which outputs the information that indicates the sound output mode and that is held by the memory, to an amplifier which controls to operate or not operate the speaker outside the television set.

Video/sound output device and external speaker control device

In an audio output system including a TV, an AV amplifier, a DVD player, and the like, a simple control program decides an audio output mode setting, i.e., whether to output audio from a built-in speaker of the TV or output audio from an external speaker connected to the AV amplifier by linking operations of the respective devices. A control unit of a DVD player transmits a request signal concerning the audio output mode to a control unit of a TV. According to a request from the DVD player, the control unit of the TV instructs a control unit of an AV amplifier to be set to a mode for outputting audio from an external speaker connected to the AV amplifier or a mode for not outputting audio and sets a built-in speaker of the TV to a state opposite to the state of the external speaker.

Audio output system control method and audio output system

In an audiovisual system in which a TV, an AV amplifier, a DVD player and the like are combined, another device constituting the system is automatically set to an optimal operation state according to the content recorded on an optical disc. A reproduction content judging unitof a DVD playerjudges the type (a video signal and an audio signal) and the format of signals included in content that has been read from the optical disc. According to the results of judging by the reproduction content judging unit, a control unitof the DVD playersends an instruction signal related to the power supply state and an instruction signal related to output of at least one of video and audio to a control unitof a TVand a control unitof an AV amplifier

Audiovisual system and control method thereof

In a home theater system having a source apparatus, a repeater apparatus and a sink apparatus connected in the recited order, when connected to a sink apparatus, whatever type it is, the repeater apparatus provides the source apparatus with video and audio signal format information that allows correct transmission. A control partof the repeater apparatusreads EDID information from memoryof the connected sink apparatus, and analyzes video and audio signal formats that can be processed by the sink apparatus, and when any format that cannot be handled by the repeater apparatusitself is included, the repeater apparatus deletes information concerning that format to reconstruct the EDID information, and stores the reconstructed information into memoryin order to cause the source apparatusto reference the stored information as EDID information of the repeater apparatus itself.

Repeater apparatus to provide a source apparatus with format information that can be processed by both a sink apparatus and the repeater apparatus and method for controlling the same

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Osaka, Japan

Masahiko Mizoguchi