SHORT-RANGE WIRELESS COMMUNICATION APPARATUS AND CELLULAR PHONE TERMINAL
First Claim
1. A short-range wireless communication apparatus comprising:
- a magnetic field strength detector detecting magnetic field strength from a carrier wave by extracting direct-current potential from the carrier wave used for short-range wireless communication;
a magnetic field strength notification device notifying a user of the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification device including a light-emitting device which emits light with a brightness which varies based on a detected magnetic field strength; and
a magnetic field strength notification signal generator generating a magnetic field strength notification signal for operating the magnetic field strength notification device in accordance with the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification signal generator converting the magnetic field strength detected by the magnetic field strength detector into a brightness adjustment signal for the light-emitting device and providing the brightness adjustment signal of the magnetic field strength notification signal to the light-emitting device.
3 Assignments
0 Petitions
Accused Products
Abstract
There is provided a short-range wireless communication apparatus and a cellular phone terminal that can surely and immediately notify a user of the optimum distance between a contactless IC card reader/writer and a contactless IC card not through an MPU or a CPU and if the contactless IC card function is locked, surely notify the user as such. In an RFID card, a magnetic field strength/brightness conversion section adjusts the brightness of two LEDs in accordance with the detected magnetic field strength of a carrier wave. A blink generation circuit detects whether the RFID card is in a communication state and blinks the LEDs if so. A function combining section combines the functions to indicate the magnetic field strength and the communication state with the brightness and blinking of the LEDs. An LED with another color illuminates only when an RFID function LSI is in a lock state.
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Citations
6 Claims
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1. A short-range wireless communication apparatus comprising:
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a magnetic field strength detector detecting magnetic field strength from a carrier wave by extracting direct-current potential from the carrier wave used for short-range wireless communication; a magnetic field strength notification device notifying a user of the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification device including a light-emitting device which emits light with a brightness which varies based on a detected magnetic field strength; and a magnetic field strength notification signal generator generating a magnetic field strength notification signal for operating the magnetic field strength notification device in accordance with the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification signal generator converting the magnetic field strength detected by the magnetic field strength detector into a brightness adjustment signal for the light-emitting device and providing the brightness adjustment signal of the magnetic field strength notification signal to the light-emitting device. - View Dependent Claims (2)
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3. A short-range wireless communication apparatus comprising:
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a communication detector detecting signal communication from a carrier wave used for short-range wireless communication; a communication notification device notifying a user that the communication detector is detecting the signal communication, the communication notification device including a light-emitting device which emits light with a brightness which varies based on a detected signal strength; and a communication notification signal generator generating a communication notification signal for operating the communication notification device in accordance with the signal communication detected by the communication detector, the communication notification signal generator converting the signal strength detected by the communication detector into a brightness adjustment signal for the light-emitting device and providing the brightness adjustment signal of the communication notification signal to the light-emitting device. - View Dependent Claims (4)
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5. A cellular phone terminal comprising:
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a control unit configured to control cellular phone functions; a short-range wireless communication unit, wherein the short-range wireless communication unit having, a magnetic field strength detector detecting magnetic field strength from a carrier wave by extracting direct-current potential from the carrier wave used for short-range wireless communication, a magnetic field strength notification device notifying a user of the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification device including a light-emitting device which emits light with a brightness which varies based on a detected signal strength, and a magnetic field strength notification signal generator generating a magnetic field strength notification signal for operating the magnetic field strength notification device in accordance with the magnetic field strength detected by the magnetic field strength detector, the magnetic field strength notification signal generator converting the magnetic field strength detected by the magnetic field strength detector into a brightness adjustment signal for the light-emitting device and providing the brightness adjustment signal of the magnetic field strength notification signal to the light-emitting device.
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6. A cellular phone terminal comprising:
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a control unit configured to control cellular phone functions; a short-range wireless communication unit, wherein the short-range wireless communication unit having, a communication detector detecting signal communication from a carrier wave used for short-range wireless communication, a communication notification device notifying a user that the communication detector is detecting the signal communication, the communication notification device including a light-emitting device which emits light with a brightness which varies based on a detected signal strength, and a communication notification signal generator generating a communication notification signal for operating the communication notification device in accordance with the signal communication detected by the communication detector, the communication notification signal generator converting the magnetic field strength detected by the magnetic field strength detector into a brightness adjustment signal for the light-emitting device and providing the brightness adjustment signal of the magnetic field strength notification signal to the light-emitting device.
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Specification