Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electrical Industrial Co., Ltd.

Sovereign Peak Ventures, LLC

Seiji Sakashita

Mitsuaki Oshima

Hisashi Takayama

Kenichiro Hayashi

Sadashi Kageyama

Takao Isogawa

Ippei Kanno

Hiroaki Ozeki

Daisuke Hayashi

Akira Usui

Kunio Ninomiya

Eiji Ueda

Hiroyuki Nagai

Yoshio Abe

Kazuhiko Kubo

Hisaya Kato

Kiyotake Fukui

Hidenori Tatsumi

Todd S Bowser

Takeshi Sato

Takaya Hayashi

Shigeru Soga

A portable terminal includes a receiver, a barcode former configured to form barcodes and a display. The barcode former forms a barcode from the data received by the receiver and the display displays the formed barcode.

OFDM signal transmission system, portable terminal and E-commerce system

At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point groups to which data of the first data stream are assigned. Also, data of the second data stream are assigned to the signal points of each signal point group. A difference in the transmission error rate between first and second data streams is developed by shifting the signal points to other positions in the space diagram expressed at least in the polar coordinate system. At the receiver side, the first and/or second data streams can be reconstructed from a received signal. In TV broadcast service, a TV signal is divided by a transmitter into low and high frequency band components which are designated as first and second data streams respectively. Upon receiving the TV signal, a receiver can reproduce only the low frequency band component or both the low and high frequency band components, depending on its capability. Furthermore, a communication system based on an OFDM system is utilized for data transmission of a plurality of subchannels, wherein the subchannels are differentiated by changing the length of a guard time slot or a carrier wave interval of a symbol transmission time slot, or changing the transmission electric power of the carrier.

Communication system

OFDM signal transmission system, portable terminal, and e-commerce system

Via a mobile communication network, a transmission apparatus receives position information representing a current position of a reception apparatus. Based on the received position information, the transmission apparatus generates notice data indicating that it is necessary to correct preprogrammed program information identifying a program which has been preprogrammed for viewing or preprogrammed for recording and being generated at the reception apparatus, and transmits the generated notice data to the reception apparatus. Accordingly, a transmission apparatus is provided which generates information that allows preprogramming of a broadcast program for viewing or recording to be properly performed at the reception apparatus side, or which generates a correct broadcast program table, and transmits the generated information or program table to the reception apparatus.

Transmission apparatus and reception apparatus

Growing community of inventors

Osaka, Japan

Seiji Sakashita