Apparatus for switching communication method based on detected communication distance
AssigneeCanon Kabushiki Kaisha
InventorKenichi Shinbori
Life of this patent
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Abstract
A communication apparatus comprising: a spatial communication circuit having a transmission part and a reception part; and a detection part for detecting the separate positional state from a communication partner apparatus. The communication method by the spatial communication circuit is switched according to the detection result of the detection part.
Claims43
A communication apparatus comprising:
- (a) communication means having a transmission part and/or a reception part;
- (b) detection means for detecting a characteristic of a state of communication with the apparatus of a partner;
- and
- (c) control means for controlling said communication means to communicate by a parallel data transfer method in the state that said detection means detects that the characteristic of the state of communication is good and to communicate by a serial data transfer method in the state that said detection means detects the characteristic of the state of communication is bad.
An electronic apparatus comprising:
- (a) communication means for communication with another apparatus;
- (b) detection means for detecting the communication distance to said apparatus with which said communication means communicates;
- and
- (c) control means for controlling said communication means to communicate by a parallel data transfer method in the state that the communication distance is shorter than a predetermined distance and to communicate by a serial data transfer method in the state that the communication distance is longer than the predetermined distance.
A transmitting apparatus comprising:
- (a) transmission means for transmitting a signal to another apparatus;
- (b) detection means for detecting the transmission distance to said apparatus to which said transmission means transmits a signal;
- and
- (c) control means for controlling said transmission means to communicate by a parallel data transfer method in the state that the communication distance is shorter than a predetermined distance and to communicate by a serial data transfer method in the state that the communication distance is longer than the predetermined distance.
A receiving apparatus comprising:
- a) reception means for receiving a signal from another apparatus;
- (b) detection means for detecting the transmission distance to the other apparatus from which the reception means receives a signal transmitted by the other apparatus;
- and
- (c) control means for controlling said reception means to communicate by a parallel data transfer method in the state that the communication distance is shorter than a predetermined distance and to communicate by a serial data transfer method in the state that the communication distance is longer than the predetermined distance.
A receiving apparatus according to claim 32, wherein said detection means detects the communication distance by performing simulated reception in advance by said reception means.
A transmitting and receiving apparatus comprising:
- (a) transmission means for transmitting a signal to another apparatus;
- (b) reception means for receiving a signal from the other apparatus;
- (c) detection means for detecting the communication distance to said apparatus to and from which said transmission means transmits and receives a signal;
- and
- (d) control means for controlling said transmission means for said reception means to communicate by a parallel data information transfer method in the state that the communication distance is shorter than a predetermined distance and to communicate by a serial data transfer method in the state that the communication distance is longer than a predetermined distance.
A transmitting and receiving apparatus according to further comprising:
- (d) indicating means for indicating the communication state of said transmission means or said reception means.
Dependencies are inferred from the claim text.