Matsushita Electric Works, Ltd.

Panasonic Electric Works Co., Ltd.

Kenji Doi

Masaru Hashimoto

Masaki Koyama

Yoshiko Suzuki

Yoshifumi Watabe

Noriyuki Yamaga

Osamu Nishimura

Hitoshi Sakakibara

Tokuhisa Nishimura

Toru Fujioka

Keiichi Yoshida

Mitsuhide Maeda

Koichi Aizawa

Kenshi Suzuki

Shigekazu Kusanagi

Ayumu Yasuda

Keiji Kakite

Ryouji Nakajima

Kazuya Kitayama

Yoshiko Tsuji

Sigekazu Kusanagi

Takahiro Inoue

Hitoshi Kanagawa

Takashi Nishiyama

An electronic security system is provided with an electronic key and an electronic locking apparatus. The electronic key includes an identification data registry for storing one or more identification data for locking and unlocking. The electronic locking apparatus includes a key data registry for storing a key data having a predetermined relationship with an identification data of an electronic key corresponding to the electronic locking apparatus. The system includes with a reader/writer for reading and writing the identification data in and from the identification data registry. This system ensures an improved convenience by making a single key compatible with a plurality of objects.

Electronic key, electronic locking apparatus, electronic security system, and key administering server

A data transmission system using a human body as a signal transmission path includes a transmitter and a receiver. The transmitter uses a pair of electrodes which are held in close proximity to the skin of the human body. The transmitter transmits data to the receiver through the signal transmission path partly extending through the human body when a user carrying the transmitter touches a touch electrode of the receiver. The electrodes are integrated into a garment worn by the user in such a manner that the electrodes are kept in a closely facing relation to the skin of the user, thereby establishing the electrical path extending through the human body. With the integration of the two electrodes into the garment, the user wearing the garment as an everyday clothes or uniform can be easy and convenient to carry the transmitter for successful transmission of the data.

Data transmission system using a human body as a signal transmission path

Touch-responsive data transmission system for elongating transceiver battery life and assuring one-touch data transmission includes a first transceiver worn on user and a second transceiver connected to equipment utilizing first transceiver data. User contacts first transceiver signal and ground electrodes and touches a second transceiver touch electrode to establish a signal path through user. First transceiver includes a detector for detecting a start signal from the second transceiver signal electrode. Second transceiver includes a generator for generating the start signal upon touching the touch electrode. Receiving the start signal, circuit elements responsible for data transmission are battery-energized to start data transmission from first to second transceivers. Circuit elements responsible for transmitting data remain deenergized until user touches the second transceiver touch electrode to save energy during non-operation and prolong first transceiver battery life. By touching the touch electrode, automatic data transmission remains possible without requiring additional starting procedures.

A communication system includes a transmitting device, a receiving device having receiving device for receiving data transmitted by said transmitting device and managing device for managing received data, detecting device for detecting whether or not communication of data between said transmitting device and said receiving device is permitted, said detecting device being provided with at least one of said transmitting device and said receiving device, wherein when said detecting device detects a fact that communication of data is permitted, said transmitting device starts transmitting data to said receiving device.

In-home health care system

An electrochemical gas sensor includes, as disposed on an insulating substrate, a plurality of electrodes for individually sensing a standard gas present in a surrounding atmosphere at a fixed concentration and a target gas present in the surrounding atmosphere, and a signal processing circuit for determining sensor life on the basis of sensed outputs of the standard gas. Constant detection of the sensitivity characteristics of the gas sensor is thereby attained for self-examination of the life thereof.

Electrochemical gas sensor

Growing community of inventors

Nara, Japan

Kenji Doi