Hitachi, Ltd.

Nippon Telegraph and Telephone Public Corporation

Yoji Shibata

Masaaki Takizawa

Kiyoshi Ishida

Atsuo Yoshida

Hitoshi Matsushima

Jun Furuya

Takehiko Yamada

Iwao Ishinabe

Hiroshi Yoshikawa

Yukinobu Maruyama

Toru Ebihara

Wataru Kosuge

Toshiaki Watanuki

Atsushi Ishibashi

Hiroshi Gotoh

Masahiro Takahashi

Kenji Yokoi

Katsumi Mikamo

Takushi Yoshimaru

Yoshinobu Matsubayashi

Hiroaki Takatsuki

Katsumi Haji

Takashi Matsubara

Hiroshi Goto

Takeshi Hoshino

Masahiko Achiha

Takafumi Kawasaki

Nobuyuki Matsuyama

Masumi Fukano

Nobuyoshi Torii

Satoshi Endo

Yasuo Tachi

Tetsuro Kiyomatsu

Hitoshi Yamadera

Hirohito Nakajima

Tatsuya Konishi

Toru Komatsu

Seiji Toyoda

Shoji Higuchi

Shingi Domen

Kazushige Sako

Hidetoh Hata

Hideto Kakihara

Kenichi Hiratsuka

Katsumi Seki

Norio Imanishi

Akira Yabiki

Nobumichi Yukawa

Shoichi Matsuhashi

Shigetoshi Okada

Shuichi Ishiwata

Toshiyuki Sumida

Tomoki Kozono

In a teleconference terminal equipment; a picture codec for simultaneously displaying a still picture and video on a single screen, comprising an analog-to-digital converter which converts a picture signal into digital picture data, a picture-in-picture processor which is supplied with the digital picture data as self-picture data of the terminal equipment, a video decoder or a still picture decoder which decodes input picture data and delivers the decoded data to the P-in-P processor, and a digital-to-analog converter which is supplied with picture data for forming a P-in-P frame, having been produced from the self-picture data and the decoded data by the P-in-P processor, and which converts the supplied picture data into an analog signal and delivers the analog signal as an output.

Picture codec and teleconference terminal equipment

A multipoint teleconference system dispensing with an MCU, in which terminals are connected into a loop configuration through an ISDN in such a way that each terminal is coupled with each of the adjacent terminals by a single B channel. Thus, a communication frame is revolved through a looped communication channel. Each terminal enters control information for controlling a multipoint teleconference, into a predetermined area within the communication frame, and it relays the resulting communication frame to the next terminal.

Multipoint teleconference system employing H. 221 frames

A television telephone including a movable head section, a support section and a bottom section. The movable head section includes an imaging device for inputting images and a display for displaying images. The bottom section includes a communication controller for transmission and reception of encoded information of at least one of audio and visual signals to and from a communication network, and a telephone controller for controlling transmission and reception functions and including a key console unit. The support section serves for connecting the bottom section and the movable head section and for supporting the movable head section and includes an image encoder/decoder for encoding image input signals and for decoding received image signals.

Television telephone

A teleconference terminal equipment adapted to construct an AV meeting system as an intended use, comprising a network interface and communications control apparatus, a multimedia multiplexing/demultiplexing and interterminal signal control unit which multiplexes and demultiplexes video data and control data contained in a communication frame to be transmitted by the control apparatus and a communication frame received by the same, respectively, a video codec which codes and decodes motion picture data, a video input/output interface which connects an external camera to the video codec, a camera control/external device multiconnector, a CPU which controls an operation of the external camera through the multiconnector on the basis of control data delivered from the control unit, and a box-shaped housing with an adjustable supporter to house the communication control apparatus, video codec, and camera.

Teleconference module with video codec for motion picture data

Publication articles each composed of a headline having relatively high information emphaticality and a text having relatively high information detailednessare coded on an article basis in an information provider apparatus. The coded information is transmitted to a user terminal. The transmitted information is first displayed on a display device of the user terminal in low magnification to display the headlines. The user selects a desired headline. The text corresponding to the selected headline is displayed in a magnification sufficient for making the displayed text legible. The novel setup realizes a publication contents information transmitting/viewing system by which a publication page can be viewed over and each can be read in generally the similar feeling and convenience as those of paper-based publications.

Contents information transmitting/viewing system and method therefor

In a teleconference terminal equipment; a picture codec for simultaneously displaying a still picture and video on a single screen. The picture codec includes an analog-to-digital converter which converts a picture signal into digital picture data, a picture-in-picture processor which is supplied with the digital picture data as self-picture data of the terminal equipment, a video decoder or a still picture decoder which decodes input picture data and delivers the decoded data to the P-in-P processor, and a digital-to-analog converter which is supplied with picture data for forming a P-in-P frame, having been produced from the self-picture data and the decoded data by the P-in-P processor, and which converts the supplied picture data into an analog signal and delivers the analog signal as an output.

Picture codec for teleconference equipment, which forms and displays

A teleconference terminal equipment adapted to construct an AV meeting system as an intended use, comprising a network interface and communications network control unit, a multimedia multiplexing/demultiplexing and interterminal signal control unit which multiplexes and demultiplexes video data and control data contained in a communication frame to be transmitted by the control unit and a communication frame received by the same, respectively, a picture codec which codes and decodes video data, a video input/output interface which connects an external camera to the picture codec, a camera control/external device multiconnector, and a CPU which controls an operation of the external camera through the multiconnector on the basis of control data delivered from the control unit.

Teleconference terminal equipment and teleconference module

A video conference system control section accepts reservation of a party with which a video conference is the to be held and a video conference date and time entered through a keying section, and stores the reservation contents in an information storage section and also sends them through a communication network transmitting-receiving section to an information center for registration. In response to the stored registration contents, the video conference system control section 109 controls a power unit and the communication network transmitting-receiving section to start up at least a part of the video conference system for calling the party with which the video conference is to be held and setting up a call between them before the video conference date and time.

Video conference system automatically started at reserved time

A video telephone system which includes a master video telephone terminal (secretary terminal) connected to a communication network and slave video telephone terminals (executive terminals) connected to the master video telephone terminal in which the master video telephone terminal can transfer a call to the slave video telephone terminals. When a call comes into the secretary terminal from a remote terminal on the communication network, a line control section of the secretary terminal sets up a line. Video data and speech data received on the line are decoded by a video signal coding-decoding section and an aural signal coding-decoding section and the decoded signals are output through a display and a speech output device. Sound and images picked up by a microphone and a camera respectively are coded for transmission. Then, if a predetermined instruction of call transfer to an executive terminal is entered on an electronic tablet of the secretary terminal, a communication branch control section of the secretary terminal calls the executive terminal, sets up a line between the secretary and executive terminals on a local transmission network, and connects the line between the secretary terminal and the remote terminal.

Video telephone system

Growing community of inventors

Yokosuka, Japan

Yoji Shibata