Noncontact IC card
First Claim
1. A noncontact IC card for exchanging data with a host system apparatus using radio frequency signals or other noncontact medium, comprisingan interface for interfacing with said host system apparatus,a memory unit for storing data,a submemory unit for temporarily storing data, anda control circuit unit for controlling operation of said submemory unit, and controlling operation of said memory unit according to a command input from said host system apparatus via said interface,wherein said control circuit begins processing the data input from said interface or the data stored in said submemory unit only after confirming that a predefined receiving time has elapsed and no additional data is input from said interface when the predefined receiving time has elapsed.
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Accused Products
Abstract
A noncontact IC which transmits and receives data to and from a host computer using RF signals has a buffer for storing received data temporarily and a control circuit for controlling operation of the buffer main memory thereof, wherein the control circuit starts processing data stored in the buffer only when no further data is input after a predetermined data receiving time period has elapsed from the latest data input to the buffer.
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Citations
8 Claims
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1. A noncontact IC card for exchanging data with a host system apparatus using radio frequency signals or other noncontact medium, comprising
an interface for interfacing with said host system apparatus, a memory unit for storing data, a submemory unit for temporarily storing data, and a control circuit unit for controlling operation of said submemory unit, and controlling operation of said memory unit according to a command input from said host system apparatus via said interface, wherein said control circuit begins processing the data input from said interface or the data stored in said submemory unit only after confirming that a predefined receiving time has elapsed and no additional data is input from said interface when the predefined receiving time has elapsed.
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8. A noncontact IC card for exchanging data with a host system apparatus using noncontact medium, comprising
an interface for interfacing with said host system apparatus, a memory unit for storing data, a submemory unit for temporarily storing data, and a control circuit unit for controlling operation of said submemory unit, and controlling operation of said memory unit according to a command input from said host system apparatus via said interface, wherein said control circuit begins processing the data input from said interface or the data stored in said submemory unit only after confirming that a predefined receiving time has elapsed and no additional data is input from said interface when the predefined receiving time has elapsed.
Specification