Title:
【発明の名称】ディジタルコ―ドレス電話システム
Document Type and Number:
Japanese Patent JP3056199
Kind Code:
B1
Abstract:
PROBLEM TO BE SOLVED: To prolong the service life of a battery of a slave set by allowing a private master set to transmit a control signal to a slave set resident in an area where a public mode service area and a private mode service area are overlapped through the use of a time slot adjacent to that of a control signal for a public master set to educe the power consumption of the slave set in its standby state. SOLUTION: The private master set 4 sets a private use control signal transmission period on the basis of a control signal transmission period for the public master set 3, writes the information to control data and conducts encoding. Then the private master set 4 sets a time slot to accommodate a private control signal to a position of a time slot adjacent behind that of a public control signal and transmits the control signal to a slave set 5. The slave set 5 receives both the public and private control signals, its transmission control section stores in advance periods of control signals of each master set 4, activates a power supply of a radio section in a timing earlier by a prescribed time from a leading edge of the public control signal to be received, and succeedingly receives the public control signal set behind by oe time slot. Thus, number of times of on/off of the power supply of the slave set can be reduced and the power on-time can be decreased.
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Inventors:
Hideki Negishi
Koji Hori
Chie Hashimoto
Koji Hori
Chie Hashimoto
Application Number:
JP4785199A
Publication Date:
June 26, 2000
Filing Date:
February 25, 1999
Export Citation:
Assignee:
NEC IC Microcomputer System Co., Ltd.
International Classes:
H04W56/00; H04W48/18; H04W52/02; (IPC1-7): H04Q7/38; H04Q7/36
Domestic Patent References:
| JP1013920A | ||||
| JP1066146A | ||||
| JP6343056A | ||||
| JP7203539A | ||||
| JP8275242A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)