Portable radio terminal with infrared communication function, infrared emission power controlling method between portable radio terminal and apparatus with infrared communication function
First Claim
1. A portable radio terminal, detachably mountable on a vehicle-carried adapter, for infrared communication selectively with a vehicle-carried adapter as a first apparatus located within hailing distance, as a communication partner, and a second apparatus located remotely, as a communication partner, comprising:
- an infrared communication section for transmitting and receiving signals in an infrared frequency band to and from a selected one of the vehicle-carried adapter and the second apparatus;
communication-partner detection means for detecting the second apparatus, whichever is currently in infrared communication with said terminal, as the communication partner; and
control means, responsive to the detection of said communication-partner detection means, for controlling said infrared communication section in such a manner that an emission power of said infrared communication section is normal enough to ensure infrared communication if the detected communication partner is the vehicle-carried adapter, and that the emission power of said infrared communication is higher than such normal emission power if the detected communication partner is the second apparatus.
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Accused Products
Abstract
The invention provides a portable radio terminal with an infrared communication function by which, even if the communication distance varies, appropriate infrared emission power control can be performed to achieve reduction in power consumption in infrared communication by detecting the other party of infrared communication or a reception power. The portable radio terminal with an infrared communication function comprises an infrared communication section for transmitting and receiving a signal in an infrared frequency band, a communication object party detection section for detecting information of the other party of infrared communication, and a control section for controlling an emission power of the infrared communication section in response to information of the other party of infrared communication detected by the communication object party detection section.
81 Citations
5 Claims
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1. A portable radio terminal, detachably mountable on a vehicle-carried adapter, for infrared communication selectively with a vehicle-carried adapter as a first apparatus located within hailing distance, as a communication partner, and a second apparatus located remotely, as a communication partner, comprising:
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an infrared communication section for transmitting and receiving signals in an infrared frequency band to and from a selected one of the vehicle-carried adapter and the second apparatus;
communication-partner detection means for detecting the second apparatus, whichever is currently in infrared communication with said terminal, as the communication partner; and
control means, responsive to the detection of said communication-partner detection means, for controlling said infrared communication section in such a manner that an emission power of said infrared communication section is normal enough to ensure infrared communication if the detected communication partner is the vehicle-carried adapter, and that the emission power of said infrared communication is higher than such normal emission power if the detected communication partner is the second apparatus. - View Dependent Claims (2, 3)
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4. A portable radio terminal, detachably mountable on a vehicle-carried adapter, for infrared communication selectively with the vehicle-carried adapter located within hailing distance, as a communication partner, and a second apparatus located remotely, as a communication partner, comprising:
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an infrared communication section for transmitting and receiving signals in an infrared frequency band to and from a selected one of the second apparatus and the vehicle-carried adapter;
an identification section for identifying the second apparatus or the vehicle-carried adapter, whichever is currently in infrared communication with said terminal, as the communication partner; and
a control section, responsive to the identifying of said identification section, for controlling said infrared communication section in such a manner that an emission power of said infrared communication section is normal enough to ensure infrared communication if the communication partner is the second apparatus, and that the emission power of said infrared communication section higher than such normal emission power if the detected communication partner is the vehicle-carried adapter.
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5. A method for controlling an infrared emission power when a portable radio terminal transmits and receives signals in an infrared frequency band to and from a selected one of a first apparatus located within hailing distance, as a communication partner with the terminal, and a second apparatus located remotely, as a communication partner with the terminal, comprising the steps of:
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at the terminal detecting the first apparatus or the second apparatus, whichever is currently in infrared communication; and
controlling the infrared emission power in accordance with the result of said detecting in such a manner that said infrared emission power is normal enough to ensure infrared communication if the detected communication partner is the second apparatus, and that said infrared emission power is lower than such normal infrared emission power if the detected communication partner is the first apparatus.
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Specification