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NTT Data Communications Systems Corporation Patents
Assignee:
NTT Data Communications Systems Corporation
Address:
Tokyo, JP
No. of patents:
13
Patents:




Patent Number Title Of Patent Date Issued
D332943 IC card input and output terminal February 2, 1993
6182891 Electronic bankbook, and processing system for financial transaction information using electroni February 6, 2001
The object of the present invention is to propose an account bankbook, a money transfer card, a receipt file, and a checkbook utilizing an optical card, an IC card, or a hybrid optical/IC card. On the surface of a resin card base board 1 are formed an IC chip 11, an optical recording she
6052695 Accurate completion of transaction in cooperative type distributed system and recovery procedure April 18, 2000
The transaction processing throughput of a system in which a plurality of servers cooperatively perform distributed processing of transactions is improved. The servers (1a, 1b, 1c, . . .) are connected to each other through a communication network (2), and a resources (16) and a log 18 a
6029887 Electronic bankbook and processing system for financial transaction information using electronic February 29, 2000
The object of the present invention is to propose an account bankbook, a money transfer card, a receipt file, and a checkbook utilizing an optical card, an IC card, or a hybrid optical/IC card. On the surface of a resin card base board 1 are formed an IC chip 11, an optical recording she
5903553 Enhanced signal collision detection method in wireless communication system May 11, 1999
A wireless communication system includes a repeater and a terminal device. The terminal device is connected to the repeater via a wireless communication channel. The terminal device includes a first section for converting a first electric signal into a first wireless signal, and tran
5715462 Updating and restoration method of system file February 3, 1998
Operating Systems (OS's) of the same form are stored in first and second memory areas. The executing Operating System in the first memory area is terminated and the Operating System in the second area is initiated. After system files stored in the first area are released from access lock
5640390 Wireless communication network system June 17, 1997
A wireless communication network system includes a communication controller, and a plurality of terminal devices which can communicate with the communication controller by wireless. The communication controller includes a first section for detecting absence of a received signal from
5353434 Non-contact IC recording medium October 4, 1994
An IC recording medium for executing data transmission/reception without contact with a reader/writer. The non-contact IC recording medium comprises a first circuit for detecting a synchronization (sync) signal sent from a reader/writer to generate a first clock signal, a second circ
5349463 Optical radio repeater with signal quality detection September 20, 1994
An optical radio system includes a host device, an end device, and a repeater. The host device and the end device communicate with each other via the repeater by use of optical radio. The repeater includes a section for receiving a first light signal from one of the host device and the e
5199071 Modem mode matching method with PBX dial-in March 30, 1993
A method and apparatus for matching operation modes of modems for connection of terminals to a telephone line, i.e., matching operation forms determined by a communication speed, a coding format, a synchronizing format, etc., on both the calling and answering sides of the telephone l
5185798 IC card system having a function of authenticating destroyed data February 9, 1993
An IC card includes, in addition to an ordinary data recording processing circuit, an IC chip area including an encrypting circuit, and a magnetic or optical data recording unit mounted thereon. Those items of data at an initialization and final transaction times are recorded in the magn
5179561 Totally self-checking checker January 12, 1993
A totally self-checking checker checks the faults of a logical circuit and also checks faults inside itself. The totally self-checking checker does not require a large number of gate circuits and minimizes the number of test code words that are used. The code words, of the code word sets
5153897 Automatically controlling the operation mode of data circuit terminating equipment in a communic October 6, 1992
The operation modes of a plurality of modems in a communication system are matched with each other for connection of digital terminals to an analog telephone line on both the calling and answering sides of the analog telephone line. For example, operation modes of modems on both sides of

 
 
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