Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method for controlling IC card reader/writer to transmit same character frame upon receiving echo back character indicating an error exists in received character frame

Method for controlling IC card reader/writer to transmit same character frame upon receiving echo back character indicating an error exists in received character frame

US Patent 5790885 · Granted Aug 4, 1998

Estimated economic value: $20,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Data rewriting method for flash memory using partial erases2009
Data rewriting for flash memory2006
Apparatus and method for receiving and transmitting serial data2006
Voltage generator2003
Counting circuit with rewritable non-volatile memory, and counting method2001
Integrated circuit for embedding in smart cards, and method of issuing smart car2001
Voltage generator2001
Voltage generator2000
Communication system and communication method2000
Call-unit count device1999
Method of effecting mutual authentication1998
High-security IC card1997