Masayoshi Ohashi, Toshinori Suzuki: Authentication system. Kokusai Denshin Denwa, Nikaido Marmelstein Murray & Oram, June 2, 1998: US05761309 (187 worldwide citation)

An authentication system whereby authentication load can be distributed in the network without sharing secret information of users is provided.

Yoshinori Hatori, Hideo Yamamoto: Adaptive predictive coding system for television signals. Kokusai Denshin Denwa Kabushiki Kaisha, Robert E Burns, Emmanuel J Lobato, Bruce L Adams, August 12, 1980: US04217609 (170 worldwide citation)

A television signal coding system which achieves stable coding efficiency in both stationary and moving picture. This invention is directed to such a predictive coding system in which for predicting a first picture element in a certain field, use is made of sampled values of a second picture element ...

Yasuyuki Nakajima: Noise reduction apparatus for reducing noise in decoding of moving picture sequence. Kokusai Denshin Denwa Kabushiki Kaisha, Westman Champlin & Kelly P A, March 11, 1997: US05610729 (167 worldwide citation)

In picture decoding from compressed data, noise component is predicted for each pixel, and noise-free original picture data is predicted from the predicted noise component and the decoded picture data, thus permitting picture quality improvement to be obtained.

Atsushi Koike, Masahide Kaneko, Yoshinori Hatori: Hybrid coding system for moving image. Kokusai Denshin Denwa, Armstrong & Kubovcik, May 26, 1992: US05117287 (149 worldwide citation)

A moving image is coded through a waveform coding predictor (2), and a model-based coding predictor (3) which is mainly applicable to a head portion of a person, the coded outputs of said two predictors are compared (5) with an input current image for each block element which has for instance 8.time ...

Kazunori Takeuchi, Masayuki Yasunaga, Takayasu Shiokawa: Microstrip antenna for two-frequency separate-feeding type for circularly polarized waves. Kokusai Denshin Denwa Kabushiki Kaisha, Emmanuel J Lobato, Robert E Burns, December 22, 1992: US05173711 (117 worldwide citation)

A microstrip antenna of two-frequency separate-feeding type for circularly polarized waves is disclosed, in which four radiation conductors are disposed on a dielectric plate mounted on a conducting ground plane and each radiation conductor has its marginal portion partly short-circuited via a short ...

Yoshinori Hatori, Toshio Koga, Kiichi Matsuda, Naoki Mukawa: Image coding system coding digital image signals by forming a histogram of a coefficient signal sequence to estimate an amount of information. Kokusai Denshin Denwa, NEC Corporation, Fujitsu, Nippon Telegraph and Telephone Corporation, Sughrue Mion Zinn Macpeak & Seas, April 24, 1990: US04920426 (115 worldwide citation)

In an image coding system having a plurality of coding characteristics, such as quantization characteristics, information of a digital image signal sequence is monitored in each of a number of predetermined intervals by forming a histogram of a sequence of coefficients which is calculated from the d ...

Takahiro Nomura, Yohtato Yatsuzuka, Shigeru Iizuka: Speech signal coding/decoding system based on the type of speech signal. Kokusai Denshin Denwa, Armstrong & Kubovcik, June 23, 1992: US05125030 (113 worldwide citation)

An input speech signal is encoded by an adaptive quantizer which quantizes the predicted residual signal between the digital input speech signal, and prediction signals provided by predictors and a shaped quantization noise provided by a noise shaping filter. An inverse quantizer, to which the encod ...

Fumio Takahata, Mitsuo Nohara, Yasuo Hirata: Frequency assignment system in FDMA communication system. Kokusai Denshin Denwa, Armstrong Nikaido Marmelstein & Kubovcik, November 8, 1988: US04783779 (110 worldwide citation)

In a frequency division multiple access (FDMA) communication system, a plurality of carrier frequencies relating to a predetermined frequency band for transmitting a PSK (phase shift keying) signal are provided on a frequency scale. When a service is a low bit rate signal, it is transmitted by using ...

Seiichi Yamamoto, Norio Higuchi, Toru Shimizu: Speech synthesis system by rule using phonemes as systhesis units. Kokusai Denshin Denwa, Armstrong Nikaido Marmelstein Kubovcik & Murray, January 23, 1990: US04896359 (105 worldwide citation)

A speech synthesizer that synthesizes speech by actuating a voice source and a filter which processes output of the voice source according to speech parameters in each successive short interval of time according to feature vectors which include formant frequencies, formant bandwidth, speech rate and ...

Yasuyuki Nakajima: Interlaced video signal motion compensation prediction system. Kokusai Denshin Denwa Kabushiki Kaisha, Pollock VandeSande and Priddy, May 2, 1995: US05412435 (99 worldwide citation)

A coder with a motion estimation system, which comprises a same parity field motion estimator, a near field motion estimator, an inter-field interpolated motion estimator, a comparator for selecting the smallest one of prediction errors E1 to E3 output from the respective motion estimators, and a se ...