Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Masazumi Yamada

Hiroyuki Iitsuka

Akira Iketani

Takuya Nishimura

Chiyoko Matsumi

Junji Yoshida

Hidetoshi Takeda

Yukio Kurano

Tatsuro Juri

Hideaki Takechi

Shoichi Gotoh

Akihiro Takeuchi

Yasuo Hamamoto

Yoshiki Kuno

Masaaki Kobayashi

Chojuro Yamamitsu

Yoshinori Kitamura

Ryogo Yanagisawa

Tadashi Kunihira

Ichiro Arimura

Hiroshi Kase

Shoichi Goto

Natsume Matsuzaki

Masakazu Nishino

Takahiro Nagai

Yutaka Nio

Hidekazu Suzuki

Mitsuteru Kataoka

Kenji Morimoto

Yoshifumi Yanagawa

Naoshi Usuki

Shiro Kato

Shinji Hamai

Toshiaki Tsuji

Hirotoshi Uehara

Ayako Takatsuji

Sako Asayama

Mutsuyuki Okayama

Masahiko Mizoguchi

Toshiki Murakami

Akihiro Mitani

Hiroyuki Iltsuka

Shinya Kadono Kadono

Yoshitomi Nagaoka

Norihiko Mizobata

Akira Usui

Atsuo Ochi

Toshiki Yamamura

Yasunori Kawakami

Kei Ichikawa

Makoto Goto

Koichiro Nagata

Takayuki Fukui

Monta Nakatsuka

Yuzo Murakami

Takuo Otsuki

Takahiko Nanko

Noriyuki Matsumoto

Hiroyuki Litsuka

Toshikazu Munezane

Kenji Kunitake

Yuuzou Murakami

Yukio Matsuura

Katsufumi Kohno

Akihiro Matsushita El Ind Co Ltd Iproc Mitani

Toshiki Matsuhita El Ind Co Ltd Iproc Murakami

Masahiko Matsushita El Ind Co Ltd Iproc Mizoguchi

Mitsuteru Matsushita El Ind Co Ltd Iproc Kataoka

Sako Matsushita El Ind Co Ltd Iproc Asayama

Hiroshi Matsushita El Ind Co Ltd Iproc Kase

When a conventional audio video system is used, it is necessary to identify an input source of audio video information. For this reason, complicated operations and slow operation times have been a problem. A control apparatus includes: an instruction receiving unit for receiving an instruction to be provided to an audio video supplying apparatus which is an input source of audio video information currently outputted from an output apparatus that outputs the audio video information; a determination unit for determining one of the audio video supplying apparatuses to be the input source of the audio video information currently being outputted from the output apparatus; and a control information sending unit for outputting control information to the audio video supplying apparatus determined by the determination unit, the control information corresponding to the instruction received by the instruction receiving unit and being used for controlling the audio video supplying apparatus.

Audio video system, control apparatus, output apparatus, and program

When a conventional audio video system is used, it is necessary to identify an input source of audio video information. For this reason, complicated operations and slow operation times have been a problem. A control apparatus () includes: an instruction receiving unit () for receiving an instruction to be provided to an audio video supplying apparatus (to) which is an input source of audio video information currently outputted from an output apparatus () that outputs the audio video information; a determination unit () for determining one of the audio video supplying apparatuses (to) to be the input source of the audio video information currently being outputted from the output apparatus (); and a control information sending unit () for outputting control information to the audio video supplying apparatus (to) determined by the determination unit (), the control information corresponding to the instruction received by the instruction receiving unit () and being used for controlling the audio video supplying apparatus (to).

To provide an audio-video data synchronization method whereby an increase in the amount of control message transmission can be suppressed and the video output can be prevented from being interrupted. The audio-video data synchronization method includes: obtaining, by the audio output device, a first latency that is a period of time taken for the video output device to output the video, by receiving the display identification data that includes information indicating the first latency from the video output device when the indication of the connection validity status information changes from Invalid to Valid; adjusting, by the audio output device, timing of outputting the audio according to the first latency; obtaining, by the video output device, a second latency which is a period of time taken to output the video in the outputting; notifying the audio output device of the second latency by sending a control message from the video output device when the connection validity status information indicates Valid, the control message including information that indicates the second latency obtained in the obtaining of a second latency; and adjusting, by the audio output device, timing of outputting the audio according to the second latency.

Audio-video data synchronization method, video output device, audio output device, and audio-video output system

The present invention provides a reproduction apparatus capable of automatically switching an input of a television to an output from a broadcast receiver such as an STB. A television, upon receiving a notification command notifying that output of video or audio is to start, switches its input to an output from an apparatus which has sent the notification command. An STB, upon receiving an instruction command instructing that output of video or audio should be started, sends the notification command to the television. A DVD recorder includes: a decoder that reproduces video or audio recorded in a DVD-RAM disc; a data output I/F that outputs the reproduced video or audio to the television; and a command sending and receiving I/F that sends the instruction command to the STB when the output of the reproduced video or audio ends.

Reproduction apparatus and 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

The network system comprises an original device description indicating a control point so as to register an address used for MAC address authentication. The server side acquires information from the device(s) connected to the network, and only the device(s) having the above mentioned description are listed and displayed. By responding to the access from the non-registered device in a predetermined manner, the device is prompted to be registered.

Server apparatus, client apparatus and system for securely transmitting stored content

A digital broadcast receiving apparatus which enables simple programming for receiving a digital television broadcast and/or a radio broadcast. The digital broadcast receiving apparatus includes: a broadcast receiving unit receiving a digital broadcast; an extraction unit extracting a service description table from the received digital broadcast; an identification unit identifying, from the extracted service description table, transport stream identification information, network identification information, and service identification information, as stream identification information; and a transmission unit transmitting, to a recording apparatus, the identified stream identification information and a recording command.

Digital broadcast receiving apparatus, recording apparatus, method and system

An output control apparatus capable of appropriately switching screens depending on a current situation, and a reproduction apparatus and a television performing the same. The television includes a tuner receiving a television broadcast, a data input I/F receiving video or audio from a DVD recorder, and a command input I/F receiving a command from the DVD recorder. Further, the television includes a user input unit receiving an instruction from a user, a switch selecting the tuner or the data input I/F, an output processing unit controlling an output of video or audio from the switch, and a control unit (i) switching the switch to the tuner when the switch selects the data input I/F when a first command is inputted from the command input I/F and (ii) not switching the switch when the switch does not select the data input I/F.

Output control apparatus controlling an output of video or audio by automatically switching an input of a reproduction device and an output control system, a reproduction apparatus and a television for performing the same

A communication apparatus establishes a one-way data connection and a connection to a network in which messages are transferred in two ways, and includes: a one-way data connection status detecting unit which detects a connection validating request indicating a communication apparatus on a data reception side that data transmission, utilizing the one-way data connection, is possible and a connection invalidating request indicating that the data transmission is impossible, both of which are outputted from the communication apparatus on the data reception side; an apparatus address obtaining unit which obtains an apparatus address with a message via the network when a change from the connection invalidating request to the connection validating request is detected; an address holding unit which holds the apparatus address; and a message transmission continuing unit which responds to the message received via the network based on the apparatus address held by the address holding unit regardless of whether or not the connection invalidating request is detected.

Address managing method and communication apparatus

The present invention has an object to operate a reproduction apparatus (an apparatus from which video is inputted) using only a remote control of a video display apparatus. A video display apparatus which displays video includes: a first display unit which displays a menu screen of the video display apparatus; a switching unit which switches a current input to an input from an input source device from which video is inputted when the input source device is indicated in the menu screen displayed by the first display unit; and a second display unit which displays a menu screen of the input source device when the switching unit switches the current input.

Video display apparatus and reproduction apparatus

When the HPD () which indicated that the transmission of a control signal between the data receiving apparatus () and the control signal receiving apparatus () has become possible is detected, the command judging section () ignores the first reception command which it directly received from the remote controller () and makes the second reception command () effective which it receives via the CEC line (). In such a construction, it is possible to conduct a remote control operation normally without affecting unfavorable influences on the apparatuses.

Control signal receiving apparatus

A data transmitting and receiving method for improving transmission and reception efficiency can be obtained by improving the security through update of a control key and reduction of the frequency of the authentication and key exchange process. An STBtransmits encrypted digital data Kw (D) obtained by encrypting digital data D using a work key Kw, and an encrypted work key Kc (Kw) obtained by encrypting the Kw using a control key Kc. The Kc is periodically or non-periodically updated, and an identifier L identifying the Kc is assigned to each Kc. A VTR devicedecrypts the received Kc (Kw) using the Kc obtained by performing the authentication and key exchange process with the STB, decrypts the Kw (D) received using the Kw to obtain the D. It is determined whether or not the Kc has been updated while the reception process is suspended by referring to the transmitted L when the reception process is suspended and then resumed. If it is determined that the Kc has been updated, then the authentication and key exchange process is performed again to obtain the updated Kc.

Data transmitting/receiving method, data transmission apparatus, data reception apparatus, data transmission/reception system, AV contents transmitting method, AV contents receiving method, AV contents transmission apparatus, AV contents reception apparatus, and program recording medium

A signal switching device including an interface having a video signal communicating unit, a DDC and an HPD, controlling connected device, or being controlled by connected device. A switcher () includes a switch () selecting video signal input, a DDC () reading information from output destination device, a microcomputer () reading information indicating a physical address of switcher () and a status of the output destination device through DDC (), and a DDC () and a DDC () outputting information to a plurality of input source devices. The microcomputer () stores the physical address of the switcher () and above-mentioned information into an EDID memory () and reads the above-mentioned information out of the EDID memory () and outputs through the DDC () and the DDC ().

Signal switching device, signal distribution device, display device, and signal transmission system

Provided is an audio-video processing apparatus having significant operability. The first electronic device () includes a state information sending unit () that sends, to a second electronic device () being the audio-video processing apparatus, a state information indicating a state of the self electronic device. The second electronic device () includes: a second manipulation item information storage unit () that stores one or more pieces of first manipulation item information, each of which includes item information indicating an item in a manipulation menu and operation instruction information that is information instructing the first electronic device () to perform a specified operation corresponding to the item; a state information obtainment unit () that obtains the state information from the first electronic device (); a manipulation menu display preparation unit () that displays a manipulation menu based on one or more pieces of manipulation item information stored in the second manipulation item information storage unit (), depending on the state information obtained by the state information obtainment unit ().

Audio-video processing apparatus and program therefor

Growing community of inventors

Osaka, Japan

Masazumi Yamada