Radio data transmitter and receiver
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 30, 1999
Grant Date -
N/A
app pub date -
Mar 19, 1997
filing date -
Mar 22, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radio data transmitter includes radio switching circuit which is activated in response to first radio signal having a predetermined particular pattern, and a data transmitter unit. The data unit transmits a first radio signal include a carrier modulated by predetermined data from an antenna when supplied with power in accordance with the activation of the radio switching circuit, and subsequently disconnect the power supply. In addition, a radio data receiver includes switch-activation to circuit for transmitting the first radio signal having the predetermined particular pattern, a receiving circuit for receiving the second radio signal including the data from the data transmitter unit activated by the first radio signal having the predetermined particular pattern, and a storage device for storing data received by the receiving circuit.
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