Yozan Corporation

Sharp Corporation

Sharp Kabushiki Kaisha Corporation

Ntt Mobile Communications Network, Inc.

Ezel Inc.

Daita Frontier Fund, LLC

Other

Kokusai Electric Co., Ltd.

Kokusai Electric Corporation

Sunao Takatori

Makoto Yamamoto

Guoliang Shou

Weikang Yang

Changming Zhou

Kazunori Motohashi

Ryohei Kumagai

Koji Matsumoto

Hisanori Kiyomatsu

Mamoru Sawahashi

Fumiyuki Adachi

Xuping Zhou

Wiwat Wongwarawipat

Kenzo Urabe

Gouliang Shou

Kunihiko Suzuki

Jie Chen

Shengmin Lin

Xiaoling Qin

Guoliang Shu

Chanming Zhou

Koji Matsumato

Shou Guoliang

Wiwat Wongwirawipat

Jian Luo

Changmine Zhou

Xiaoling Oin

A system and method are provided for authentication. A first request for a transaction is received from a communications device, the first request comprising collation information of a customer to be authenticated and a price of a product or service to be purchased by the customer. An authentication level is set based on the price. A second request is transmitted to a mobile communications device of the customer. Authentication information is received from the mobile communications device, the authentication information comprising identification information of the customer. The authentication information is transmitted to the communications device.

Modifiable authentication levels in authentication systems for transactions

The object of the present invention is to provide an authentication system capable of achieving suitable authentication processing while guaranteeing the maximum convenience for the customer. A first communication terminal PDis built into a television TV that can be connected to the Internet, and communications with an authentication control company BS are possible via the first communication terminal PD. The authentication control company BS is, for example, a telecommunications company, and performs authentication control for a plurality of product supplier companies SPto SPaccording to the product purchase status on the television TV. Furthermore, the present invention simplifies the appropriate procedures by setting authentication levels for authentication control.

Host computer, mobile communication device, program, and recording medium

A money receiving system receives monetary payments without using cash or placing restrictions on recipients of such payments. This system uses an authentication management apparatus and a store communication terminal. The authentication management apparatus includes a receiver for receiving customer ID information, store ID information, and monetary amount information from a store communication terminal, an authentication device for authenticating the customer ID and the store ID, and a transfer device for transferring money indicated by the monetary amount from an account of a store to an account of a customer. The store communication terminal includes a memory for storing store information, a receiver for receiving customer information, an input device for inputting a monetary amount that a store is to pay a customer, and a transmitter for transmitting the store ID, the customer ID, and the monetary amount to an authentication management apparatus.

Authentication managing apparatus, and shop communication terminal

For transmitting transmission data generated by a transmission data generator of a communication terminal device, a packet unit determining unit [] determines a packet unit for a lowest data communication rate for the transmission of the transmission data, among packet units (packet sizes) that can be recognized by a destination communication terminal device and that can be transmitted from the communication terminal device. A packet generator [] packetizes the transmission data according to the packet unit determined by the packet unit determining unit [], and transmits the packetized transmission data to the destination communication terminal device.

Communication terminal device and billing device

A slave communication device in a wireless LAN system uses a single wireless channel. When a telephone apparatus outside the network originates a call to the LAN, the originated call first terminates at a master communication device. A wireless telephone communication can then be established between that telephone apparatus and the slave communication device without relaying through the master communication device, and without requiring particular processing, such as authentication on a host station side. A first state is when a transmission/reception device of the master communication device is turned on and transmission/reception devices of slave communication devices are turned off. A second state is when the transmission/reception device of the master communication device is turned off and only the transmission/reception device of one of the slave communication devices which is a subject of control delegation is turned on.

Slave communication device for use in wireless LAN system and control method and control program of slave communication device

A wireless LAN system uses a single wireless telephone line. When a telephone apparatus outside the network originates a call to the LAN, the system allows establishment of wireless telephone communication between that telephone apparatus and a slave communication device. Each transmission/reception device is controlled to switch between a first state in normal times in which a transmission/reception device of a master communication device is turned on and transmission/reception device of respective slave communication devices are turned off and a second state in which the transmission/reception device of the master communication device is turned off and only the transmission/reception device of any one of the slave communication devices is turned on.

Wireless LAN system and control method and control program of wireless LAN system

For transmitting transmission data generated by a transmission data generator of a communication terminal device, a packet unit determining unit determines a packet unit for a lowest data communication rate for the transmission of the transmission data, among packet units (packet sizes) that can be recognized by a destination communication terminal device and that can be transmitted from the communication terminal device. A packet generator packetizes the transmission data according to the packet unit determined by the packet unit determining unit, and transmits the packetized transmission data to the destination communication terminal device.

A system for improving the level of service to the user, and billing according to user intentions while making effective use of telephone lines. The system includes a host computer ( ) that controls communication services provided by telecommunications carriers, a base terminal ( ) having base ID information which the host computer can identify, and a plurality of remote terminals ( A- .) having remote terminal ID information which the host computer can identify, to which control is transferred from the base terminal, and which communicate with the host computer. The base terminal ( ) generates n remote IDs from which the host computer ( ) can specify the base ID information based on the base ID information, for n remote terminals selected using the selection unit ( ), and sends the generated remote IDs in turn to each remote terminal via a first communication device ( ), and each remote terminal receiving the remote ID from the base terminal via the first communication device ( ), appending remote terminal ID information, and sending the result to the host computer via a second communication device ( ).

System for transfer control of telephone line

The present invention relates to a slave communication device which received control delegation from a master communication device and performs communication with an originating telephone apparatus through a host station based on a call originated from that originating telephone apparatus, and has a master communication device having a unique master ID set therefor for using a wireless telephone line provided by a host station and one or more slave communication devices receiving control delegation from the master communication device to perform communication using the wireless telephone line for the master communication device . The slave communication device comprises storage means for storing the master ID and a slave ID recognizable by the master communication device , wireless communication means for performing communication using the wireless telephone line for the master communication device through the host station , pager signal reception means for receiving a pager signal of a radio paging system, and control means for controlling the wireless communication means based on a predetermined pager signal received by the pager signal reception means.

Radio communication device, parent communication device, parent-child communication device and radio communication system

Within a building, wireless communications can be carried out by using signals at millimeter wavelengths. The building is, for instance, arranged by employing: a first antenna mounted on the side of one surface of a door or a wall, for sensing a signal having a millimeter wavelength; a second antenna mounted on the side of the other surface of the door or the wall, for radiating a signal having a millimeter wavelength; a first receiver for receiving the millimeter-wave signal sensed by the first antenna, and for converting the received millimeter-wave signal into an electric signal; and a first transmitter for converting the electric signal which is received and converted by the first receiver into the millimeter-wave signal and for transmitting the converted millimeter-wave signal via the second antenna.

Millimeter-wave signal transmission system communicatable within buildings

The present invention has an object to provide a spread spectrum communication system for heightening the speed of communication. The present invention transfers the first PN code sequence itself as the first component, adds and transfers zero or more instances of the second PN code sequence given a phase difference as the second component, and defines an information for transmitting by the number of the second PN codes corresponding to a cycle of said first PN code sequence.

Spread spectrum communication system

In one aspect, the present invention provides a low power consumption matched filter. The signal received at an input terminal is input to a shift register having stages equal to the spread code length number after conversion into digital signals in an A/D converter. The outputs of the shift register stages are input to XOR circuits set corresponding to each stage, so that XOR operations are performed between the outputs and corresponding spread code bits d,to d,. The outputs of the XOR circuits are analogously added in an analog adder and output from an output terminal. In another aspect, a filter circuit uses an analog operation circuit to prevent lowered operational accuracy caused by residual charge. Input analog signals successively undergo sampling and holding in sample-and-hold circuits, are multiplied by coefficients stored in a shift register by multiplication circuits, and added in an addition circuit. Sample data transmission error storage is prevented by shifting coefficients in the shift register. Sample-and-hold circuits and multiplication circuits are formed by analog operation circuits, and each include a switch for canceling the residual charge. The sample-and-hold circuits and multiplication circuits normally working are refreshed sequentially by providing circuits for replacing their function. The addition circuit is refreshed in the same way.

Matched filter for spread spectrum communication systems and hybrid analog-digital transversal filter

The present invention provides a matched filter circuit available for processing long P/N codes in a small size circuit. A matched filter circuit according to the present invention performs the following processes in the proposed invention: i) sampling and holding circuits multiply part of the number of a long code; ii) multipliers are input in parallel to the sampling and holding circuit from the first multiplier register which can hold as many PN codes as the number of the sampling and holding circuits in i); iii) the PN codes are stored in the second multiplier register of the same capacity of the first multiplier resister when there is a PN code to be used sequentially to be PN codes; and iv) the PN codes in the second multiplier register are transmitted in parallel to the first multiplier register. The PN code is input to the second multiplier register in serial.

Matched filter circuit for spread spectrum communication

This invention reduces electric power consumption of a CDMA communication system receiver while it is in the wait mode. A received spread spectrum signal is demodulated in multiplication means into baseband signals Ri and Rq, and inputted into a complex matched filter. This filter is intermittently driven by supply voltage control means to perform acquisition of received signals. When an electric power calculation circuit detects the output of the filter to reach a peak equal to or greater than a predetermined value, the received signals undergo acquisition by controlling n number of correlators 26-1 to 26-n to work by a correlator controlling circuit. Moreover, de-spreading is performed. The outputs from each correlator 46-1 to 26-n are given to a RAKE combiner and demodulated by the RAKE by a combining and demodulating circuit.

Receiver for code division multiple access communication system

A highly accurate vector absolute-value calculation circuit uses analog processing and minimal hardware. Signal voltages corresponding to an I component (real number part) and a Q component (imaginary number part) are input to a first absolute-value calculation circuit 13 and a second absolute-value calculation circuit 14 through terminals 11 and 12, respectively, and they are each converted into absolute-value signals. The component I absolute-value and component Q absolute-value are compared in a comparison circuit 20. According to the result, the larger absolute-value signals are output to an input capacitor 23 of a neural computation circuit, and the smaller absolute-value signals are output to an input capacitor 24 by controlling multiplexers 21 and 22. The capacity ratio of a feedback capacitor 26 of a neural computation circuit and input capacitors 23 and 24 is 11:10:5. The complex number absolute-value calculated by the following formula is output from an output terminal 27. ##EQU1##

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Tokyo, Japan

Sunao Takatori