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EP0831414A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

A portable radio terminal

Assignee: NEC Corp
•
Filing: 1997-09-18
•
Granted: —
•
Expires: 2017-09-18
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Abstract

Abstract To economize power consumption of a portable radio terminal without impairing the transmission quality, a portable radio terminal of the invention comprises: a field intensity detector (3); a transmission unit (6); a switch (8) for supplying or cutting a power supply to the transmission unit; a memory (5); means (15) for setting the portable radio terminal to operate in a power economy mode; and a control unit (4) for controlling, when the portable radio terminal is set to operate in the power economy mode, the switch to cut the power supply to the transmission unit when the receiving field intensity becomes lower than a first threshold value and to supply the power supply to the transmission unit when the receiving field intensity is higher than a second threshold value, the memory to store the signals to be transmitted during a time interval when the power supply is cut, and the transmission unit to transmit the signals stored in the memory when the power supply is supplied to the transmission unit.

Inventors

  • 👤 Makio Kobayashi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 08:20
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10009; G06K7/10198; G06K7/10207; G06K7/0008; H; H04; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0225; H04W52/0245; Y; Y02; Y02D; Y02D30/00; Y02D30/70

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 156 words
A portable radio terminal comprising: a field intensity detector (3) for detecting a receiving field intensity; a transmission unit (6) for transmitting radio signals to a base station; a switch (8) for supplying or cutting a power supply to said transmission unit (6); a memory (5) for storing signals to be transmitted to the base station; and a control unit (4) for controlling said switch (8) to cut said power supply to said transmission unit (6) when said receiving field intensity becomes lower than a first threshold value and to supply said power supply to said transmission unit (6) when said receiving field intensity is higher than a second threshold value, said memory (5) to store said signals to be transmitted during a time interval when said power supply is cut, and said transmission unit (6) to transmit said signals stored in said memory (5) when said power supply is supplied to said transmission unit (6).
Claim 2
Dependent Claim 29 words
The portable radio terminal recited in claim 1, further comprising an input device (10) for setting levels of said first threshold value and said second threshold value from outside.
Claim 3
Dependent Claim 185 words
A portable radio terminal comprising: a field intensity detector (3) for detecting a receiving field intensity; a transmission unit (6) for transmitting radio signals to a base station; a switch (8) for supplying or cutting a power supply to said transmission unit (6); a memory (5) for storing signals to be transmitted to the base station; means (15) for setting the portable radio terminal to operate in a power economy mode; and a control unit (4) for controlling, when the portable radio terminal is set to operate in said power economy mode, said switch (8) to cut said power supply to said transmission unit (6) when said receiving field intensity becomes lower than a first threshold value and to supply said power supply to said transmission unit (6) when said receiving field intensity is higher than a second threshold value, said memory (5) to store said signals to be transmitted during a time interval when said power supply is cut, and said transmission unit (6) to transmit said signals stored in said memory (5) when said power supply is supplied to said transmission unit (6).
Claim 4
Dependent Claim 29 words
The portable radio terminal recited in claim 4, further comprising an input device (10) for setting levels of said first threshold value and said second threshold value from outside.

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