| Patent Number |
Title Of Patent |
Date Issued |
| 7296289 |
Setting or changing an access condition for an access management apparatus and method of a porta |
November 13, 2007 |
| An access management apparatus receives a command message having setting and changing functions, performs corresponding processing, and transmits results. A checking unit checks the presence/absence of a data element to be accessed. Access is permitted based on looking up a setting acces |
| 5959276 |
Issuing customized IC cards of different types |
September 28, 1999 |
| A method and apparatus issues a plurality of kinds of IC cards. A plurality of items of issue information are stored, to be written into a plurality of kinds of IC cards being issued. The kind of the IC card connected to the IC card processing apparatus is determined, based on received |
| 5929428 |
File managing method requiring a change in key data and IC card device using the method |
July 27, 1999 |
| A file managing method includes a step of setting a key data of a portable storage medium having a plurality of storage areas, a step of determining whether the key data is changed, a step of inhibiting data from being processed in the plurality of storage areas when it is determined tha |
| 5712881 |
Data transmission apparatus selectively using two clock signals |
January 27, 1998 |
| Disclosed is a data transmission system comprising a first device having first clock generator for generating a first clock signal for data exchange with a second device, second clock generator for generating a second clock signal for resetting the second device to be operable, and c |
| 5678029 |
Memory card available for various formats |
October 14, 1997 |
| In an IC card incorporating an IC chip having a data memory and a CPU for controlling the memory and designed to selectively send/receive data to/from an external apparatus, the first and second format groups of instruction data input from the external apparatus are identified. The i |
| 5644750 |
Data storage apparatus having memory area with a predetermined logic type |
July 1, 1997 |
| A data memory of an IC card is divided into a plurality of areas, a logic type used when data is written in each area is set, and the logical AND between the written data and stored data in the memory is calculated by an AND logic circuit and written in the memory. In read access, output |
| 5608902 |
File management system for memory card |
March 4, 1997 |
| In an IC card using a file management system for performing data management of a plurality of files obtained by dividing a data memory, when selection is performed to allow use of the file, discrimination ID information representing that each file is already selected is provided to each |
| 5581708 |
Data transmission system using electronic apparatus having a plurality of transmission protocols |
December 3, 1996 |
| In a data transmission system, a card reader/writer provided in a terminal device and an IC card are connected through a contact unit, the IC card is started in response to a signal from the terminal device via the card reader/writer, and transmission/reception of data is subsequently |
| 5517014 |
File management apparatus for IC card |
May 14, 1996 |
| A file management apparatus capable of inhibiting an accessing operation for a plurality of areas within files. The file management apparatus includes a memory storing files each having multiple areas, a first storage unit for storing lock data denoting a locking condition of an acce |
| 5515532 |
File management system for memory card |
May 7, 1996 |
| In a file management system for an IC card, which divides a data memory into a plurality of files, and performs data management of the divided files, a directory for managing the files is divided into field length fields, file definition information is stored in each of the divided f |
| 5437028 |
File management system with file-size flexibility |
July 25, 1995 |
| In an IC card, a memory is divided into a plurality of files and data management of each divided file is performed. The IC card comprises a size allocation section for allocating an optional file size to each file, and a control section for performing a control operation so that size |
| 5414835 |
IC card processing system capable of determing send timing between an IC card and an accepting d |
May 9, 1995 |
| According to a portable electronic apparatus processing system of this invention, an IC card sends, to an IC card reader/writer, first timer data included in an answer to reset signal and defining a time after it sends the answer to reset signal to the IC card reader/writer until an |
| 5384454 |
Portable electronic apparatus |
January 24, 1995 |
| An IC card has a data memory for storing at least one registration key data and a control element for controlling the data memory and is adapted to receive key data, as collation data, from an outside, collate it with the registration key data stored in the data memory, hold a result of |
| 5381478 |
Cipher communication system for transaction data |
January 10, 1995 |
| A cipher communication system for communicating transaction data between a host computer and a portable electronic device, wherein the host computer includes a first memory for storing a master key data, a generator for generating a transaction key data which is used for enciphering the |
| 5369760 |
Data processing system |
November 29, 1994 |
| In a system for serially transmitting data between a card reader/writer and an IC card, when a data string is transmitted from the card reader/writer to the IC card, the data row is divided into a plurality of data strings. Data (control code) representing continuity of data transmission |
| 5365045 |
Portable electric device |
November 15, 1994 |
| An IC card comprises, a memory including a system area for storing system information, and a user area for storing user information, a CPU for controlling information read/write access of the memory, and a memory for storing program data for determining an operation of the CPU. The CPU |
| 5349649 |
Portable electronic device supporting multi-protocols |
September 20, 1994 |
| A portable electronic device includes a storing unit for storing different types of communication protocols, a priority order setting unit for setting a priority order for the different types of communication protocols stored in the storing unit, a selecting unit for selecting a pred |
| 5339400 |
Portable electronic device capable of selectively providing unused area size of whole memory or |
August 16, 1994 |
| A portable electronic device which can be connected to an external device comprises a memory, having a storage area of a predetermined storage capacity, for storing information, a CPU for controlling read/write access of information for the memory, a program memory for storing program da |
| 5293029 |
System for mutually certifying an IC card and an IC card terminal |
March 8, 1994 |
| A mutual certification method includes an IC card having a random number generator, a plurality of key data and a plurality of encryption algorithms, and an IC card terminal which also has a random number generator, a plurality of key data and a plurality of encryption algorithms. Th |
| 5288978 |
Mutual authentication system and method which checks the authenticity of a device before transmi |
February 22, 1994 |
| A mutual authentication system authenticates a first electronic device and a second electronic device by transmitting authentication data between the first and second electronic devices. In this system, the second electronic device transmits a first authentication data to the first elect |
| 5226155 |
Method and system for allocating file space in memory of IC card |
July 6, 1993 |
| In a memory area of a data memory in an IC card, data file definition data for defining a data file is stored from one end of the memory area, and a data file is defined from the other end of the memory area. Area definition data for defining an area in a data file is stored from one end |
| 5225664 |
Mutual authentication system |
July 6, 1993 |
| When mutual authentication is effected between an IC card and a host device, key data and random number data transmitted from the host device are immediately subjected to the encrypting process without storing the same into a RAM of the IC card, and only authentication data obtained as |
| 5202922 |
Data communication system |
April 13, 1993 |
| When a final session is performed between a host device and an IC card, common key data stored in the host device is encrypted by an updated session key and transmitted to the IC card in which the encrypted common key data is decrypted by the the same updated session key to obtain the |
| 5161256 |
Method and system for allocating file area in memory area of IC card |
November 3, 1992 |
| A data memory in an IC card is constituted by a common data file used commonly in all applications and a plurality of application data file independently used for each application. Each data file includes a plurality of areas. Identification data is provided to the data file and the |
| 5161231 |
Processing system which transmits a predetermined error code upon detection of an incorrect tran |
November 3, 1992 |
| According to a portable electronic apparatus processing system of this invention, when an IC card receives instruction data, it checks if a function code can be completely input. If the function code is not completely input, the IC card sets data "FF" (hexadecimal code) as the functi |
| 5097118 |
Portable electronic apparatus for writing and reading data to and from an external device and pe |
March 17, 1992 |
| A memory section of an IC card is divided into a plurality of areas. Identification data is induvidually assigned to each area. The IC card has a first means for selecting a physically identical area based on at least two identification data. The IC card further has a second means for |
| 5093785 |
Portable electronic device with memory having data pointers and circuitry for determining whethe |
March 3, 1992 |
| A portable electronic device in which when data is written in a PROM the start address of the next unwritten area is stored in a RAM incorporated in a CPU of the portable electronic device. A data memory is divided into a plurality of areas, and each area is further divided into a plural |
| 5089951 |
Microcomputer incorporating memory |
February 18, 1992 |
| A microcomputer of this invention includes an internal memory. These memories are connected to internal buses and external buses through bi-directional buffers. This microcomputer also includes a buffer controller for determining whether an access by a control section is made to the |
| 4988855 |
Portable electronic apparatus |
January 29, 1991 |
| A plurality of key data are stored in an internal memory. These key data are collated with a set of second key data selectively input from an external device. Collation results are stored in units of key data. Upon an access to an area in the memory, an access is enabled when one of the |
| 4985615 |
Portable electronic apparatus having key data for limiting memory access |
January 15, 1991 |
| An IC card has a first type of key data used for an access enable/disable judgement for a common data file and all of the application data files, and a second type of key data used for an access enable/disable judgment for a specific application data file and the common data file. A stor |
| 4967391 |
Data string retrieval apparatus for IC card |
October 30, 1990 |
| Two access buses are arranged such that one access bus connects a memory section from which data is retrieved to a retrieval section, and the other access bus is connected to a control section. The two access buses are connected to each other through a gate. While the retrieval section i |
| 4949240 |
Data storage system having circuitry for dividing received data into sequential wards each store |
August 14, 1990 |
| A control element incorporated in an IC card divides externally input data into a plurality of words. It adds a word-discriminating data item and a chain data item to each of these words, and writes these words into the data memory incorporated in the IC card. Each chain data item indica |
| 4939353 |
Processing system for enabling data communication with a self-diagnose device |
July 3, 1990 |
| In a processing system for enabling data communication between a card reader/writer and an IC card, the card reader/writer transmits a reset signal to the IC card. When IC card receives the reset signal, a control element initiates operations to execute a self diagnosis program stored in |
| 4901276 |
Portable electronic apparatus having a function of checking for empty areas in which to write da |
February 13, 1990 |
| The portable electronic apparatus of the invention has a memory for storing externally-supplied data, and a central processing unit (CPU 15) for accessing the memory. The memory is divided into a plurality of areas. Each area has pointer data indicating a final address at which the data |
| 4887234 |
Portable electronic device with plural memory areas |
December 12, 1989 |
| A portable electronic device in which storage data supplied from an external device is stored in a deletable EEPROM or in a non-deletable EPROM in accordance with specified data added to the storage data and an indication of whether or not the storage data is deletable. When a plural |
| 4845717 |
IC card having two output buffers |
July 4, 1989 |
| According to a portable electronic apparatus processing system of this invention, an IC card has two output buffers. When the IC card cannot normally receive an instruction sent from an IC card reader/writer, the IC card sets a message indicating this in the first output buffer. On the |
| 4841131 |
Portable electronic device with means for checking data validity during read-out |
June 20, 1989 |
| A portable electronic device having a data memory, constituted by a nonvolatile memory, for storing transaction data, and a central processing unit for performing data-read and data write accessing of the nonvolatile memory. When the CPU writes transaction data in the data memory, it |
| 4839792 |
Portable electronic apparatus with a device for determining data validity |
June 13, 1989 |
| According to the portable electronic apparatus of the invention, when a data string is to be written in a data memory, information indicating whether the data string is valid or not is appended to the data string, and the data string is stored. When a read instruction is supplied from a |
| 4833595 |
Portable electronic apparatus with data remaining counter |
May 23, 1989 |
| The portable electronic apparatus of the invention has a memory for storing externally-supplied data, and a central processing unit (CPU 15) for accessing the memory. The memory is divided into a plurality of areas. Each area has pointer data indicating a final address at which the data |
| 4827512 |
Programmable portable electronic device |
May 2, 1989 |
| According to a portable medium (IC card) of this invention, a memory area is divided into a system program area and a user program area. A text transmitted between the IC card and a host system connected thereto includes a command text and a response text. The command or response text |
| 4800520 |
Portable electronic device with garbage collection function |
January 24, 1989 |
| A portable electronic device of this invention has a control CPU (Central Processing Unit) and a data memory. The data memory is divided into a plurality of areas, and each area consists of a data area and an attribute area indicating an attribute of the data area. The attribute area con |
