JP2824871B

JP2824871B

PURPOSE:To use the IC card for both a single-line type external device and a two-line type external device by setting communication mode information with a command from an external device. CONSTITUTION:An EEPROM 8 is stored with an application program, operation data, etc., and a communication mode...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KODERA JUJI, HINO YOSHIHARU
Format: Patent
Sprache:eng
Schlagworte:
BOOK COVERS
BOOKBINDING
CALCULATING
COMPUTING
COUNTING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
HANDLING RECORD CARRIERS
LOOSE LEAVES
MOVABLE-STRIP WRITING OR READING APPARATUS
PERFORMING OPERATIONS
PHYSICS
PRESENTATION OF DATA
PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES
PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR
RECOGNITION OF DATA
RECORD CARRIERS
SPECIAL PRINTED MATTER
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To use the IC card for both a single-line type external device and a two-line type external device by setting communication mode information with a command from an external device. CONSTITUTION:An EEPROM 8 is stored with an application program, operation data, etc., and a communication mode information storage area is provided to store the communication mode information specified with a command for requesting the setting or alteration of a communication mode which is sent from the external device. When the IC card receives data from the external device, a processor 2 turns ON and OFF tri-state buffer circuits 9 and 10 according to the communication mode information stored in the EEPROM 8 to perform a communication switching process. Consequently, the IC card is usable for both the single-line external device and two-line type external device and the flexibility of the IC card when the card is used in a system is improved.