1
Masafumi Watanabe: Memory with common read/write data line and write-in latch circuit. Tokyo Shibaura Electric, Oblon Fisher Spivak McClelland & Maier, December 19, 1978: US04130900 (84 worldwide citation)

A latch circuit is provided on the input side of write-in circuit of a semiconductor memory device which is so formed that a common data line is used for data writing-in and data reading-out. Write-in data read serially into the latch circuit in a word unit is temporarily stored and held, so that th ...


2
Naoko Ito, Masafumi Watanabe, Natsuko Tsutazawa: Group communication system based on presence information and client device. NEC Corporation, Sughrue Mion PLLC, July 6, 2010: US07752273 (46 worldwide citation)

When the status of a client X is changed to a status i, a group management unit generates a group agent Xi, corresponding to the status i and registers the generated group agent in the server S, and the presence issuing unit issues the status i and the identifier of the group agent Xi. Initially, a ...


3
Masafumi Watanabe, Toshitune Ozaki, Jiro Hirahara: Single-chip microcomputer with encryptable function on program memory. Kabushiki Kaisha Toshiba, Finnegan Henderson Farabow Garrett and Dunner, August 16, 1988: US04764959 (23 worldwide citation)

A single-chip microcomputer with an encryptable function on program memory encrypts the contents of the memory for protection of secrecy when the programs stored in read only memory (ROM) are read to the outside. An encrypting code generator is provided to execute the encrypting and the encrypting c ...


4
Naoko Ito, Masafumi Watanabe: Presence system and information processing equipment, dynamic buddy list generation method in presence system, and presence notification destination controlling method and its program for use with presence system. NEC Corporation, Sughrue Mion PLLC, November 30, 2010: US07844667 (14 worldwide citation)

A presentity service client has a presentity that issues presence information to a presence service and a watcher which observes presence information for other presentities; a presence change rule holding part holds a presence change rule; and a presence calculating part changes the presence informa ...


5
Natsuko Tsutazawa, Naoko Ito, Masafumi Watanabe: List management server for managing updating of list by third-party terminal, list management system, list managing method, and program. NEC Corporation, Dickstein Shapiro, October 12, 2010: US07814120 (10 worldwide citation)

A buddy list manager stores a buddy list sent from a receiver terminal and manages the buddy list. A controller accepts an updating request and identifying information of a third party terminal from the third party terminal. When the controller accepts the updating request and the identifying inform ...


6
Natsuko Tsutazawa, Naoko Ito, Masafumi Watanabe: Communication agent apparatus. NEC Corporation, Foley & Lardner, May 29, 2007: US07224973 (10 worldwide citation)

A communication agent apparatus includes at least one mobile unit, a presence information inquiring unit, a handling method determination unit, and a handling method execution unit. The mobile unit transports a communication device. The presence information inquiring unit acquires presence informati ...


7
Tadashi Miyakawa, Masayoshi Nakane, Masafumi Watanabe, Yoshio Osaka: Counting level "1" bits to minimize ROM active elements. Tokyo Shibaura Electric, Finnegan Henderson Farabow & Garrett, March 13, 1979: US04144587 (6 worldwide citation)

A semiconductor memory device, wherein a logic level-converting circuit is provided on a chip on which a mask read only memory (M-ROM) is formed; where more than half the number of information bits being stored in the ROM have a logic level of "1", active elements are formed in those cells of the RO ...


8
Masato Iyoki, Yoshiteru Shikakura, Masafumi Watanabe: Approach method for probe and sample in scanning probe microscope. SII NanoTechnology, Brinks Hofer Gilson & Lione, September 20, 2011: US08024816 (5 worldwide citation)

In detecting a displacement of a cantilever (2) by a displacement detecting mechanism (5) and allowing a probe (1) and a sample (8) to approach each other by at least one of a coarse-movement mechanism (13) and a vertical direction fine-movement mechanism (11) at the same time, an excitation mechani ...


9
Satoshi Fujino, Masafumi Watanabe: Digital phase-locked loop. Renesas Electronics Corporation, McGinn IP Law Group PLLC, August 2, 2011: US07990191 (5 worldwide citation)

A digital phase-locked loop circuit includes: a first counter which counts a first clock; a second counter which counts third clocks into which a second clock is divided; a first phase detector which detects a relative phase difference between the first and the third clocks according to a first comp ...


10
Masafumi Watanabe: PLL circuit. NEC Electronics Corporation, McGinn IP Law Group PLLC, June 9, 2009: US07545223 (5 worldwide citation)

A PLL circuit according to an embodiment of the present invention includes: a phase comparator to output an up signal and a down signal based on a phase difference between a reference clock signal and a feedback clock signal; an offset correcting circuit to correct a pulse width of at least one of t ...