Ncr Corporation

Nippon Telegraph and Telephone Corporation

Uniden Corporation

Nec Corporation

Canadian Patents & Development Ltd.

Uniden America Corporation

Nrc Corporation

Ncr Coporation

Shuzo Kato

Yasushi Nakamura

Satoru Sakama

Junnosuke Takeda

Shuji Kubota

Asami Nemoto

Tamihei Takahashi

Kazuhiko Seki

Masao Kusayanagi

Masao Ishikawa

Takatoshi Sugiyama

Yoshitaka Utsumi

Shingo Watanabe

Masahiro Morikura

Hiromi Isozaki

Toshiharu Yagi

Osamu Takagi

Kamilo Feher

Richard D Wenk

Isao Okazaki

Katsuhiko Kawazoe

Shunji Honda

Kiyoshi Enomoto

Motohiro Kochiya

Hiep Van Pham

Noboru Watanabe

An electronic price label battery storage apparatus and replacement method which maintains power to a memory within the electronic price label during removal and replacement of batteries. The battery storage apparatus includes a first electrical contact for simultaneously providing a first electrical path to first polarity sides of a plurality of batteries within the electronic price label, a second electrical contact for simultaneously providing a second electrical path to second polarity sides of the plurality of batteries, and a retainer which maintains at least a single one of the batteries in contact with the first and second electrical contacts during removal of other batteries to maintain power to the memory within the electronic price label.

Electronic price label battery storage apparatus and replacement method

A communication system is provided whereby desired information can be transmitted in accordance with conditions and the application. The communication system includes a PHS terminal and a provider system that is capable of information communication with this terminal. The PHS terminal has a voice recognition section that receives voice from a microphone and recognises the received voice signal, an input device that selects the output form of the voice signal, a conversion section that converts the recognised voice signal with the selected output form, and a transceiver that transmits the converted voice signal to the provider equipment; the converted voice signal is further transferred from the provider system to another destination wireless communication terminal device. This output form includes for example &ldquo;dialect&rdquo;, &ldquo;intonation/imitated voice of a celebrity etc.&rdquo; or &ldquo;modulation&rdquo;. Conversion filters convert the voice signal in accordance with these.

Communication system and wireless communication terminal device used therein

An integrated cellular and cordless communication system in which cellular calls are forwarded to a landline telephone number associated with a personal base station when a subscriber terminal is determined to be within a predefined vicinity of the personal base station is described herein. Once forwarded to the personal base station via external network elements, such calls may be answered using a cordless device operative to communicate with the personal base station. Alternately, the calls may be transferred to a voice messaging module within the personal base station. When the subscriber terminal is determined to have been removed from within the vicinity of the personal base station, a message from the personal base station to the external network elements results in modification of a call forwarding address such that subsequent calls intended for the subscriber terminal are in fact routed thereto. The personal base station may also be optionally implemented to enable the forwarding of calls intended for the personal base station to the subscriber terminal. A subscriber could indicate the desire for this type of call forwarding by way of, for example, a user interface of the personal base station. In response, the personal base station would issue a request to the external network elements to forward subsequent calls intended for the landline telephone number of the personal base station to the subscriber terminal.

Personal base station for integrated cellular and cordless communication system

A radio communication system in which each frame having an imbalanced transmission speed is time-divided to a low speed transmission area and to a high speed transmission area according to a specified ratio in the time domain. An upload signal as a first-directional signal and a download signal as a second-directional signal are allocated to the low speed transmission area and to the high speed transmission area respectively. In a case where a high speed transmission request is issued from a personal station (PS) to a base station (BS), the order of the upload signal and that of the download signal is exchanged in the time domain within one frame, so that the download signal and the upload signal are allocated to the low speed transmission area and the high speed transmission area respectively.

Radio communication system

A data collection system in which, in communications between each of terminal units and a data collector through a power line, the data collector subjects a polling signal generated by a polling generating circuit to spread spectrum modulation by a spreading section, and superimposes the spread signal on the power line, while each of the terminal units subjects the incoming spread signal thereto superimposed on the power line to de-spread spectrum demodulation and recognizes it, and superimposes the data subjected to spread spectrum modulation on the power line after a certain period of time different from that in other terminal unit has passed. The data collector collects the data obtained by subjecting spread signals successively coming thereinto each by being superimposed on the power line to de-spread spectrum demodulation according to the polling.

Data collection system

A serial-parallel converter is arranged to convert an information sequence into a plurality of bit sequences. Two convolutional encoders are provided which respectively receive bit sequences from the serial-parallel converter. Each of the two convolutional encoders outputs first and second bit sequences. First parallel-serial converter receives the first bit sequences and converts them into third bit sequence, while second parallel-serial converter receives the second bit sequences and converts them into fourth bit sequence. The third and fourth bit sequences are used to modulate two carriers with a phase difference of .pi./2 radians.

Error control coding arrangement for digital communications system

Cash register

In a simple decoder which decodes convolutional codes of constraint length K and coding rate n/m, encoded data which is supplied thereto in steps of m bits are distributed, bit by bit, to m shift registers each having x=[(K-1)/(m-n)] series-connected shift stages. Here, [p] means the minimum integer equal to or larger than a real number p. The connection of n modulo-2 addition circuits to all the shift stages of all the shift registers is defined by n decoding generative vectors which define n decoding generative polynomials. The modulo-2 addition circuits perform modulo-2 additions of the outputs of the shift stages connected thereto and output n results of additions as decoded results of n bits. The n decoding generative vectors are selected from decoding generative vectors of N rows which are obtained as an inverse matrix of a square matrix whose elements are N.times.N coefficients which define N=mx convolutional code generating polynomials.

Method and circuit for decoding convolutional codes

A digital communication system using superposed transmission of high and low speed digital signals capable of transmitting superposed high and low speed digital signals through an identical frequency band efficiently by increasing a simultaneously transmittable number of channels in the low speed digital signals, while achieving the practically reasonable bit error rate performances for both the high speed digital signals and the low speed digital signals. In this system, the low speed digital signals are transmitted in a form of spread spectrum signals and the high speed digital signals are cancelled out from the superposed transmission signals in obtaining the output low speed digital signals by using the phase inverted replica of the high speed digital signals to be combined with the superposed transmission signals, so that it becomes possible to increase a number of channels for the low speed digital signals, while achieving the practically reasonable bit error rate performances for both the high speed digital signals and the low speed digital signals.

Growing community of inventors

Hiratsuka, Japan

Shuzo Kato