Nippon Hoso' Kyokai

Other

Olympus Optical Company, Ltd.

Junji Kumada

Kazuhiko Shibuya

Yutaka Tanaka

Shoichi Suzuki

Akinori Hashimoto

Yoshinori Izumi

Seiichi Gohshi

Hisakazu Katoh

Taiichiro Kurita

Taiji Nishizawa

Hajime Matsumura

Isao Kondo

Makoto Okui

Minoru Honda

Yasuaki Kanatsugu

Ryoichi Yajima

Yuichi Iwadate

Jun'ichi Ishida

Yoshihiro Fujita

Shigeyuki Itoh

Tomohiro Saito

Shoji Tanaka

Hidetoshi Yamada

Yoshio Takeuchi

Fumio Okano

Hiroshi Hirabayashi

Toshihiro Nomoto

Yukihiro Nishida

Kazumasa Enami

Fumihiko Ando

Kazuhiko Nakamura

Fumiaki Minematsu

Yuji Nojiri

Haruo Okuda

Hisakazu Kato

Tetsuo Mitsuhashi

Ichiro Yuyama

Tatsuhiko Kondo

Kouichi Takano

Makoto Tadenuma

Toshihiko Susaki

Hajime Sonehara

Kenji Nakashima

Iwao Obata

Hiroyuki Hamazumi

Sumio Yano

Takashi Oketani

Masaru Takechi

An interleave frame is formed by combining slots corresponding to the same slot number in each frame when interleave process is performed in a super frame, and the data are read out along row or column direction (i.e. readout direction) and the data are written along the direction opposite to the readout direction in the same memory.

Transmitter and receiver

Stabilized carrier recovery is achieved even at the time of a low C/N ratio by measuring the phase of a signal and controlling VCO or NCO (Numerical Controlled Oscillator) using only a period having few constellation points. At this time, false lock phenomenon is avoided as follows. That is, relatively short SYNC modulated by an already-known pattern is entered into a modulation wave, VCO or NCO oscillation frequency is swept in a wide range and sweep is stopped at a frequency in which the SYNC can be received, thereby carrying out coarse control AFC. Further, a period having long to some extent, having few constellation points is provided in the modulation wave and then, a difference between the frequency of a received modulated signal and a local oscillation signal of VCO or NCO is obtained in this period. This frequency difference is analyzed according to the phase differential function method, self-correlation function method or count method, and the VCO or NCO is controlled based on this result of analysis.

AFC circuit, carrier recovery circuit and receiver device capable of regenerating a carrier reliably even at the time of low C/N ratio

High resolution vertical and horizontal components of a high definition video signal are combined with a standard broadcast system video signal, such as the NTSC system, in which high frequency horizontal resolution components are sampled and used to modulate at least a first sub-carrier signal. The first sub-carrier is frequency interleaved onto the standard broadcast signal. Vertical high resolution components are time compressed and time division multiplexed onto top and bottom portions of the standard broadcast signal. The modified broadcast signal can be decoded by a standard receiver to display a standard resolution video image, while receivers designed to decode the modified signal can time division demultiplex the vertical high resolution components and demodulate the horizontal high resolution components, combine these components with the standard components, and generate a high definition video image.

Receiver and channel compatible encoding/decoding system for high

Method of detecting motion vector, apparatus therefor, and picture

A multiple sub-sampling encoding/decoding system performing interfield and interframe offset sub-sampling of a broad bandwidth television signal. The system compresses the television signal to fit, for example, to the transmission bandwidth of the standard television systems, compensates the transmission characteristics, and achieves the optimal frequency allocation of the modulated transmission signal.

Multiple sub-sampling transmitting/receiving system performing

Television synchronization system

A solid state image sensor including a light receiving section having a number of light receiving cells arranged in matrix, and a reading and storing section having a first set of switching and memory transistors for reading bright signals read out of light receiving cells arranged in a row and storing the same for a horizontal scanning period, a second set of switching and memory transistors for reading dark signals out of light receiving cells arranged in a row and storing the same for a horizontal scanning period, and a set of reading transistors for reading the bright and dark signals simultaneously out of the first and second sets of memory transistors for respective pixels successively. The light receiving section and the reading and storing section are formed integrally in the same semiconductor substrate. In order to remove the fixed pattern noise, there is derived differences between the simultaneously readout bright and dark signals with the aid of a differential amplifier.

Solid state image sensor

Growing community of inventors

Tokyo, Japan

Junji Kumada