发明名称 |
TELEPHONE SET WITH INFRARED-RAY COMMUNICATION FUNCTION |
摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption in an infrared-ray communication equipment. SOLUTION: Half-duplex infrared-ray communication is conducted between a portable telephone set main body section 12 and a transmission reception section 13. A primary station starting communication at first stops power supply to the infrared-ray communication equipment from the point of time when the reception of a reception (reply) signal from a secondary station is finished till a point of time when the transmission of a voice or control signal is started next. When the transmission interval and timing of the primary station are constant, the secondary station stops power supply to the infrared-ray communication equipment at the end of transmission of the reply signal, and releases the stop of power supply at a predicted time when the primary station transmits signals. |
申请公布号 |
JPH11154912(A) |
申请公布日期 |
1999.06.08 |
申请号 |
JP19970318476 |
申请日期 |
1997.11.19 |
申请人 |
NTT MOBIL COMMUN NETWORK INC |
发明人 |
YASUZAWA KAZUYA;HAMADA KATSUNORI |
分类号 |
H04B10/11;H04B7/26;H04B10/114;H04B10/80;H04M1/00;H04M1/73;H04W52/02;H04W52/44 |
主分类号 |
H04B10/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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