JPH0670337U - Radio calling system - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to save the battery of the receiver. [Structure] The transmitter transmits waiting person data corresponding to each receiver, and the receiver has waiting person determination means and intermittent reception control means, and is constant when the received waiting person data is greater than or equal to a specified value. The intermittent reception is turned off during the period. [Effect] The transmitter transmits waiting person data corresponding to each receiver, and the receiver has waiting person determination means and intermittent reception control means, and is constant when the received waiting person data is equal to or greater than a specified value. Since the intermittent reception is turned off during the period, the battery life of the receiver can be extended by shortening the useless reception time during the period when the call is not expected to be made.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radio calling system having a function of displaying the number of people waiting, and particularly to a battery saving of a receiver.

[0002]

[Prior art]

 Conventionally, as disclosed in Japanese Patent Laid-Open No. 1-191528, individual selective calling numbers and registration order data that are consecutive in advance are stored in a receiving device, and each receiving device stores a calling number included in the received data. It compares with its own individual calling number, and if they match, it notifies the call, and if they do not match, it subtracts the registration order data sent at the same time from its own waiting registration order data and displays it as the waiting person data. There is known a radio call system with waiting number display or a system in which a transmitter transmits waiting number data corresponding to each receiver. In order to save the battery, the circuit current is suppressed and the POCSAG system is used for intermittent reception.

[0003]

[Problems to be solved by the device]

 In portable receivers that use a battery as a power source, extending battery life is a major issue due to reasons such as reduced running costs and labor for battery replacement. When used as an individual waiting call at a public office, hospital, golf practice area, bowling alley, etc., the call is frequently made, and the period in which the receiver is in the receiving state also becomes long. However, the valid data for one specific receiver is only once when calling, and when receiving the valid waiting person data for itself.In the original sense, it consumes unnecessary power during other periods. It is nothing but being.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, in the present invention, the transmitter transmits waiting person data corresponding to each receiver, and the receiver has waiting person determination means and intermittent reception control means, and receives waiting person data. If is above the specified value, the intermittent reception is turned off for a certain period.

[0005]

[Action]

 In the radio paging system configured as described above, the receiver can stop the intermittent reception operation during the period in which no call is expected to be made.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram of a receiver to which the present invention is applied. The receiver receives the radio signal sent from the transmitter via the antenna, and sends the received data detected and demodulated by the receiving unit 1 to the calling data comparing means 2. The calling data storage means 2 compares the calling number (receiver ID) included in the received data with the calling number stored in the calling data storage means 3, and if they match, the calling number is included in the received data and after the calling number. A detection signal indicating that the waiting number data sent is valid is sent to the waiting number data comparing means 4. The waiting person data comparison means 4 generates waiting person data based on the waiting person information included in the received data and sends it to the waiting person display unit 6. At that time, the waiting person data comparison means 4 compares the obtained waiting person with the comparison value stored in the waiting person comparison value storage means 5, and sends a comparison signal indicating the magnitude relationship to the intermittent reception control means 7. The intermittent reception control means 7 controls the intermittent reception operation timing of the receiving section based on the obtained information.

FIG. 2 is a detailed timing chart of a transmission / reception operation applied to an embodiment of the present invention. The transmission data 21 in the transmission signal A has a POCSAG format. Received signal B indicates the timing at which the receiver performs the receiving operation, and pulses 22 to 24 detect the presence of the preamble signal included in the first part of the transmission data 21 so that the receiver performs the intermittent receiving operation. The period is shown. When the reception operation is started from the rising edge of the pulse 25 and the preamble signal included in the data 21 is detected, the synchronization signal sent after the preamble signal is detected. During this period (the period indicated by pulse 25), the receiver continuously performs the receiving operation. The mustache pulse 26 indicates that data is received from the transmission data 21 that selectively performs the receiving operation only during the period corresponding to the frame allocated to each receiver. When the reception operation is performed for a period corresponding to one transmission, the next intermittent reception operation is started at the operation timing indicated by the pulse 27, similarly to the operation timing of the pulses 22 to 24.

FIGS. 3A and 3B are simplified diagrams of the intermittent reception operation of the receiver applied to the embodiment of the present invention. The pulses 31, 32, 35 and 36 correspond to the transmission data 21 shown in FIG. 2, and the pulses 33, 34, 37 and 38 also correspond to the reception period at the time of detecting the preamble signal to which the pulses 25 and 26 are added. .

First, FIG. 3A to FIG. 1 and FIG. 2 will be described below. As shown in FIG. 2, when the receiver detects a preamble signal, it changes from intermittent reception to continuous reception and detects a synchronous signal. After the synchronization signal is detected, the receiver continues to receive data for a predetermined batch during the frame to which it belongs, and the call data comparison means 2 continues to determine whether or not it has been called. When the receiver completes the reception of 8 frames indicated by the pulse 26 in FIG. 2, it then restarts the intermittent reception operation for detecting the preamble.

The period from the reception end time to the start of the intermittent reception operation is set to be long (a fixed time is OFF) when the latest received waiting-person data is larger than a preset value, and short when it is small. Is set to. Since the waiting person data included in the transmission data 31 and 32 is larger than the set value, the periods t1 to t2 and t3 to t4 are long. If the latest waiting time data received is larger than the set value and the waiting time information for yourself is not included in the next reception, the waiting time data should be shortened until the next reception. The chance of missed reception is low.

FIG. 3B is an example when the received waiting-person number data is smaller than the set value. Since the waiting person data included in the transmission data 36 is smaller than the set value, the period t7 to t8 is short.

[0012]

【The invention's effect】

 According to this invention, as described above, the transmitter transmits the waiting person data corresponding to each receiver, and the receiver has the waiting person determination means and the intermittent reception control means, and the received waiting person data is regulated. When the value is more than the value, the intermittent reception is turned off for a certain period, so it is possible to extend the battery life of the receiver by shortening the useless reception time during the period when no call is expected. .

[Brief description of drawings]

FIG. 1 is a functional block diagram of a receiver according to an embodiment of the present invention.

FIG. 2 is a transmission / reception timing chart of an embodiment of the present invention.

3A and 3B are simplified diagrams of an intermittent reception operation of a receiver according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiver 2 Call data comparison means 3 Call data storage means 4 Waiting person data comparison means 5 Waiting person comparison value storage means 6 Waiting person display portion 7 Intermittent reception control means 8 Power supply

Claims (1)

[Scope of utility model registration request] 1. A plurality of receivers having unique call numbers,
The receiver comprises a transmitter for transmitting a transmission signal including a peculiar calling number corresponding to the receiver and waiting person number information, wherein the receiver includes (a) a waiting person comparison value storage means, and (b) the transmission signal. Waiting person comparison means for making a size comparison between the included waiting person information and the comparison value stored in the waiting person data comparison value storage means, (c) a value obtained from the waiting person information included in the transmission signal Is larger than the comparison value stored in the waiting number data comparison value storage means, the period from the reception end time to the start of the intermittent reception operation is lengthened, and the value obtained from the waiting number information included in the transmission signal. Is smaller than the comparison value stored in the waiting person data comparison value storage means, the intermittent reception control means controls the power supply of the receiving unit so as to shorten the period from the reception end time to the start of the intermittent reception operation. Characterized by Radio paging system.