Wireless communication system, cradle apparatus, and portable device
First Claim
1. A cradle apparatus configured to function as an intermediary between a portable device and a host device, said cradle apparatus comprising:
- transmission means for transmitting a carrier wave;
receiving means for receiving from the portable device a reflected wave of the transmitted carrier wave and demodulating data transmitted from the portable device;
interface means for performing communication with the host device;
a receptacle configured to receive the portable device; and
portable device reception recognition means for recognizing whether or not the portable device is being received by said receptacle, whereinsaid transmission means controls transmission of the carrier wave based on a result of the recognition.
1 Assignment
0 Petitions
Accused Products
Abstract
A cradle apparatus and a portable device are interconnected employing reflected wave transmission without interfering with an adjacent wireless system or impairing ease of use of the portable device. The cradle is provided with a function of a reflected wave reader and a digital camera is provided with a function of a reflector, whereby communication between the cradle and the digital camera is performed in a non-contact manner. The digital camera modulates a reflected wave of an unmodulated carrier transmitted from the cradle by varying the antenna load impedance in accordance with picked up image data, thereby performing reflected wave transmission. Communication is possible even while the portable device is somewhat apart from the cradle, and the ease of use of the portable device is not impaired even while communication is being performed.
20 Citations
17 Claims
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1. A cradle apparatus configured to function as an intermediary between a portable device and a host device, said cradle apparatus comprising:
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transmission means for transmitting a carrier wave; receiving means for receiving from the portable device a reflected wave of the transmitted carrier wave and demodulating data transmitted from the portable device; interface means for performing communication with the host device; a receptacle configured to receive the portable device; and portable device reception recognition means for recognizing whether or not the portable device is being received by said receptacle, wherein said transmission means controls transmission of the carrier wave based on a result of the recognition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cradle apparatus configured to function as an intermediary between a portable device and a host device, the cradle apparatus comprising:
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transmission means for transmitting a carrier wave; receiving means for receiving, from the portable device a reflected wave of the transmitted carrier wave and demodulating data transmitted from the portable device; interface means for performing communication with the host device; and communication control means for stopping transmission of the carrier wave by said transmission means in response to absence of reception by said receiving means of the reflected wave from the portable device continuing for a predetermined time. - View Dependent Claims (11, 12)
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13. A cradle apparatus configured to function as an intermediary between a portable device and a host device, the cradle apparatus comprising:
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transmission means for transmitting a carrier wave; receiving means for receiving from the portable device a reflected wave of the transmitted carrier wave and demodulating data transmitted from the portable device; interface means for performing communication with the host device; video/audio data processing means for decoding video or audio data received via said receiving means; and video/audio data output means for outputting the decoded video or audio data to an outside.
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14. A wireless communication apparatus that performs reflected wave communication employing modulation of a reflected wave of a carrier wave, the reflected wave being caused by a reflector, the apparatus comprising:
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transmission means for transmitting the carrier wave; receiving means for performing a process of receiving the reflected wave of the transmitted carrier wave, the reflected wave being caused by the reflector; communication control means for controlling transmission of the carrier wave by said transmission means in accordance with a situation of the reflector; a receptacle configured to receive the reflector; and portable device reception recognition means for recognizing whether or not the reflector is being received by said receptacle, wherein said communication control means controls transmission of the carrier wave based on a result of the recognition. - View Dependent Claims (15, 16)
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17. A wireless communication apparatus that performs reflected wave communication employing modulation of a reflected wave of a carrier wave, the reflected wave being caused by a reflector, the apparatus comprising:
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transmission means for transmitting the carrier wave; receiving means for performing a process of receiving the reflected wave of the transmitted carrier wave, the reflected wave being caused by the reflector; and communication control means for stopping transmission of the carrier wave by said transmission means in response to absence of reception by said receiving means of the reflected wave from the reflector continuing for a predetermined time.
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Specification