Panasonic Corporation

Fuji Photo Film Company, Limited

Panasonic Intellectual Property Corporation of America

Kyocera Document Solutions Inc.

Wi-fi One, LLC

Fuji Photo Optical Co., Ltd.

Kyocera Mita Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Harris Corporation

Other

Imec

Osaka Gas Company Limited

Miura Co., Ltd.

Fugi Photo Film Co., Ltd.

Kiyotaka Kobayashi

Yutaka Murakami

Masayuki Orihashi

Akihiko Matsuoka

Shutai Okamura

Kazuaki Takahashi

Choo Eng Yap

Yutaka Yoshida

Hidekuni Yomo

Nariaki Tanaka

Daichi Imamura

Yoji Naka

Masahito Ishino

Masatoshi Tabei

Fumio Iwai

Yukihiro Mori

Yukitaka Takeshita

Masashi Takamura

Rahul Malik

Toshiki Fujita

Michio Cho

Toshiyuki Morii

Katsuaki Abe

Seimei Ushiro

Masashi Fujishima

Hirohito Mukai

Makoto Shizukuishi

Tokuji Sato

Yoshinori Kunieda

Hiroka Itani

Takuji Watanabe

Masayoshi Hirai

Eriko Hayashi

Shoichi Sakata

Shingo Sakato

Toshihiko Izaki

Hiroshi Sohma

Takaaki Kishigami

Takahiko Murata

Kazuo Kamata

Hideo Kobayashi

Yoshihiro Ito

Kazuhiko Onda

Takahisa Nakaue

Akihiro Watanabe

Nobuyuki Kameyama

Tadashi Morita

Hirofumi Nishimura

Atsushi Maruyama

Susumu Hanano

Toshio Yoshida

Kimiaki Nakada

Mitsuhiro Goda

Haruo Onozuka

Hirofumi Tsuji

Ai Takagami

Yuzo Mizobuchi

Ikuo Makie

Chisato Hatakeyama

Takashi Kamoda

Yasuhiro Nishitani

Teppei Shibuya

Katsuya Ota

Yoshimi Shimizu

Asako Hamada

Muneyoshi Sato

Masao Shoji

Tetuo Nishizawa

Katsuhisa Honda

Maiko Shikatani

Hirofumi Nakamura

Sayo Uemura

Andre Bourdoux

Noriaki Hamada

Yuki Matsui

Hisaji Matsui

Tetsuo Nishizawa

Mashashi Takamura

Madoka Arashi

A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.

Wireless communication base station apparatus, wireless communication terminal, communication method of a wireless communication base station apparatus and communication method of a wireless communication terminal

An image forming apparatus includes a photosensitive drum, a charging roller, a development device, a transfer roller, a first electricity eliminator and a controller. The photosensitive drum is provided on a conveyance path along which a sheet is conveyed. The charging roller charges the photosensitive drum. The development device develops an electrostatic latent image formed on the photosensitive drum charged by the charging roller. The transfer roller faces the photosensitive drum across the conveyance path and generates a transfer bias. The first electricity eliminator irradiates the photosensitive drum with light on a downstream side of the development device in a rotational direction of the photosensitive drum and on an upstream side of the transfer roller in the rotational direction. The controller which controls the first electricity eliminator so as to irradiate only a non-sheet passing area of the photosensitive drum with the light.

Image forming apparatus including electricity eliminator for eliminating electricity of photosensitive drum

Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S() and S(+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S() and S()' obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

Communication apparatus and communication method

In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus () transmits, from two antennas (A,B), LDPC encoded data formed by LDPC encoding blocks (A,B). In a case of a retransmittal, the multi-antenna transmitting apparatus () uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna (A).

Transmission method and reception method

Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)' obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.

Transmission apparatus and reception apparatus

In an image forming apparatus, a cleaning member is pressed against a circumferential surface of an image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. The toner has a number average roundness of 0.965 to 0.998. The toner has a Dof 4.0 &#x3bc;m to 7.0 &#x3bc;m. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is 10 N/m to 40 N/m. The image bearing member includes a single-layer photosensitive layer containing a charge generating material and a hole transport material. Ionization potential Ipof the hole transport material and ionization potential Ipof the charge generating material satisfy mathematical formula (1) 'Ip&#x2265;5.30 eV', mathematical formula (2) 'Ip&#x2265;5.30 eV', and mathematical formula (3) &#x201c;0.09 eV&#x2264;|Ip&#x2212;Ip|&#x2264;0.30 eV&#x201d;.

Image forming apparatus and image forming method

An image forming apparatus includes an image bearing member and a static elimination device. The static elimination device irradiates static elimination light onto a circumferential surface of the image bearing member. The image bearing member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The static elimination light has a wavelength of at least 600 nm and no greater than 800 nm. The photosensitive layer has an optical absorption coefficient of at least 600 cmand no greater than 1,500 cmwith respect to light having a wavelength of 660 nm.

An image forming apparatus includes an image bearing member, a charger, and a cleaning member. The charger charges a circumferential surface of the image bearing member to a positive polarity. The cleaning member is pressed against the circumferential surface of the image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. A linear pressure N of the cleaning member on the circumferential surface of the image bearing member is at least 14 N/m and no greater than 40 N/m. A rebound resilience R of the cleaning member at a temperature of 25&#xb0; C. is at least 38%. The leaner pressure N and the rebound resilience R satisfy mathematical formula (1A). The image bearing member satisfies mathematical formula (1B). 

Transmission apparatus and method, and reception apparatus and method

A transmission apparatus includes processing circuitry that generates a first data sequence representing first data or a second data sequence representing second data different from the first data and selects the first data sequence as an output data sequence. A modulation scheme is determined from a plurality of modulation schemes, and the output data sequence is modulated with the determined modulation scheme. Transmission circuitry transmits the modulated output data sequence. A first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.

Transmission method and transmission apparatus

Growing community of inventors

Kanagawa, Japan

Kiyotaka Kobayashi