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Radio selective calling receiver and calling method

A receiver, radio technology, applied in the field of repeated call notification function, can solve the problem of consuming battery energy and so on

Inactive Publication Date: 2002-11-20
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Repeated calls are also made when the receiver receives a message that is not important to the receiver owner and does not require immediate acknowledgment, which consumes battery power

Method used

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  • Radio selective calling receiver and calling method
  • Radio selective calling receiver and calling method
  • Radio selective calling receiver and calling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In a radio selective call receiver, preferably a pager, shown figure 1 , the transmitted radio signal is received by antenna 1. The radio frequency circuit 2 amplifies and demodulates radio signals received by the antenna 1 . The waveform shaping circuit 3 converts the demodulated signal into a digital signal that can be read by the subsequent decoder 4 . PROM5 is a read-only memory for storing the selective call number of the receiver. RAM6 stores received messages. The timer 7 presets the time interval of calling.

[0017] The decoder 4 is provided with an ID recognizer 41 , a message recognizer 42 , a repeat call recognizer 43 and a repeat call controller 44 . The ID recognizer compares the data signal from the waveform shaping circuit 3 with the call number of the receiver written in PROM5 in advance. If the signal matches the number, the ID recognizer 41 outputs an alarm signal in the usual first sound mode to the amplifier 8 and the amplifier 10, asking the r...

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PUM

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Abstract

A receiver capable of recognizing a repeat call identification signal accompanying a message sent by a message sender, enabling the sender to selectively instruct the receiver to make a repeat call. If the message is not confirmed (S209), the receiver repeats the call (S213) every predetermined time with the second sounding mode different from the usual sounding, to indicate that the message is an unconfirmed message, until the message is confirmed, and, no matter Whether the message is confirmed by the switch operation (S202), and the call operation is carried out periodically with three short short sounds that are not too noisy (S206, 207), until the receiver holder cancels the repeated call (S204) .

Description

technical field [0001] The present invention relates to radio selective calling receivers, in particular to the repeat call notification function of radio selective calling receivers. Background technique [0002] In a conventional radio selective call receiver, when it receives a message, the received message is displayed on a liquid crystal display (LCD), and a light emitting diode (LED) blinks simultaneously to remind that there is a call. If the user ignores the call notification, the call notification will be automatically performed again after a certain period of time. The message displayed on the LCD is stored in random access memory (RAM) as an unacknowledged message. A central processing unit (CPU) periodically checks for the existence of unacknowledged messages, and when it exists, the receiver displays a repeat call announcement different from the original call announcement. [0003] Japanese Patent Publication Hei-4-273727 (JP-A-04-273727) shows such a radio se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/02G08B3/10H04W84/02
CPCG08B3/105H04B5/00
Inventor 山崎康之
Owner NEC CORP