JPH0618341B2 - Selective call receiver - Google Patents

Description

TECHNICAL FIELD The present invention relates to a selective call receiver.

[Prior Art] Conventionally, a device called a pager has been put on the market as one of such devices. It is small and has the function of allowing the wearer to sense that a call has been made, but the device cannot determine why the callee received the call.

Therefore, after receiving the call, the carrier can immediately call the caller or directly go to the caller to confirm the requirements, and finally the information can be transmitted.

For this purpose, pagers have the disadvantage that they require some additional confirmation means.

Therefore, it is conceivable to store a fixed message in advance to eliminate the above-described confirmation work.
However, there is a problem in that it is impossible to store the optimum message for all requirements or all users.

Further, since this type of device is considered to be portable, it is necessary to consider power saving.

[Purpose] In view of the above points, an object of the present invention is to make it possible to variably store a plurality of message information items to be output based on information from an input unit for inputting character information, and to specify it. By receiving information, reading the message corresponding to it, and outputting it, you can surely prepare the message you want to convey, and you can inform it efficiently,
Furthermore, it is possible to output message information as real-time data, and further, after receiving by the receiving means, power can be supplied to the output means to save power, which is versatile and efficient in use. Aims to provide a high selective call receiver.

[Premise of Embodiment] Next, a premise of an embodiment of the information transmission device according to the present invention will be described. It goes without saying that this device may have only the transmitting unit, the receiving unit, or both.

[Receiving Unit] FIG. 1 is a block diagram for explaining the premise of an embodiment of a receiving unit of a portable information transmission device to which the present invention can be applied.

In the figure, ANT is an antenna and receives a transmission radio wave. HF is a high-frequency selective amplifier, which selectively widens a specific transmission radio wave received by the antenna ANT. DEM is a demodulator,
The signal contained in the transmitted radio wave is taken out and sent to the next stage.

Buf is a memory, which stores time-series signals sent from the demodulator DEM and derives them in parallel.

The ROM is a fixed memory, and the button MK1 as shown in FIG.
To 34, a plurality of addresses 1 to 34 are provided, and various messages are stored in each address in the form of voiced information. The contents of the fixed memory ROM are derived from the contents of the memory Buf.

syn is a synthesizer which converts the voicing information derived from the fixed memory ROM into voice.

The AMP is an amplifier, which widens the output of the synthesizer syn and causes the speaker SP to play the sound.

The operation premised on the above embodiment will be described. The radio waves captured by the antenna ANT are amplified by the high frequency selective amplifier HF only the radio waves in the signal band assigned to the receiving unit. Fixed memory ROM in which transmission information is stored from this amplified signal
The signal designating the address is demodulated by the demodulator DEM. When the above-mentioned signal designates the address of the fixed memory ROM, a time-series signal of phonemes corresponding to the voiced information of the transmission information is output from the fixed memory ROM. The synthesizer syn is driven by this signal, and the transmission information signal is output as voice. A ringing tone may be generated as in the case of a normal pager.

Next, the premise of the embodiment of the transmission unit of the information transmission device will be described.

[Transmitter] FIG. 3 is a view showing the outer appearance of the above-mentioned transmitter. Switches K1 to K5 for selecting a transmission frequency, that is, a receiver and message selection buttons MK1 to MK for selecting a message to be transmitted.
It has a K34 and a send button TK.

FIG. 4 is a block diagram of the transmitter shown in FIG.

OSC1 is an oscillator that oscillates at a fixed frequency.

AMP1 is an amplifier that amplifies the signal of the oscillator OSC1.

The OSC 2 is an oscillator that selectively oscillates signals having a plurality of frequencies so as to select one of the plurality of receiving units. The selection of the plurality of frequencies is performed by the switches K1 to K shown in FIG.
This is done by operating 5. Therefore, compared to transmitting the message itself, it can be sent very fast and very easily.

MIX is a frequency mixing circuit, which mixes the frequency of the oscillator OSC1 and the frequency of the oscillator OSC2 and outputs the mixed frequency.

AMP2 is an amplifier, which further amplifies the output of the frequency mixing circuit MIX and sends it to the power amplification section.

POWER is a power amplification unit that amplifies the signal amplified by the amplifier AMP2 and sends it to the antenna ANT.

IB is an input section, and message selection buttons MK1 to MK34
The signal corresponding to the operation of is output.

ENC is an encoder, and message selection buttons MK1 to
An encode signal corresponding to each MK34 is output.

The MEM is a memory that stores the signal from the encoder ENC.

TK is a send button shown in FIG. When the encode signal is sent from the memory MEM to the power booster POWER, the power booster POWER outputs an intermittent signal in accordance with the encode signal.

Next, the premise of the embodiment constructed as described above will be explained with reference to FIG.

Now that the caller has a receptionist with a visitor at the reception, when the caller wants to tell the receptionist to call, the caller can select the reception part of the person carrying the reception part. The oscillation frequency of the oscillator OSC2 is changed by operating any of the switches K1 to K5. Therefore, the frequency output from the frequency mixer MIX is a frequency that can be received by a certain receiving unit.

Next, in order to select the message to be sent, a desired one of the message selection buttons MK1 to MK34 is operated. Here, when the message selection button MK1 is operated, a predetermined message stored in the memory ROM can be selected without sending the message itself. When the message selection button MK1 is operated, the encoder ENC
An encode signal corresponding to the button at is generated and stored in the memory MEM.

Next, when the send button TK is operated, the encode signal stored in the memory MEM is applied to the power amplifier POWER, and the power amplifier POWER outputs a corresponding intermittent signal.

The intermittent signal is applied to the receiving section, and the high frequency selective amplifier H
The signal is amplified by F, the high frequency component is removed by the demodulator DEM, and stored in the memory Buf in the form of an intermittent code signal.

The signal stored in the memory Buf becomes an address signal in the fixed memory ROM, and the voiced signal of "Visitor Desnode De Nihon Shite Shitasai" stored in the fixed memory ROM is output and synthesized as a sound by the synthesizer syn. Is amplified by the amplifier AMP and can be heard from the speaker SP of the receiving section.

With the above-mentioned configuration, the person carrying the receiver can know the reason for calling.

[Receiving Unit] FIG. 5 shows the premise of the embodiment according to the present invention, and is a diagram showing the appearance of the receiving unit. In the figure, DP is a display unit for displaying a part of the message.

SP indicates a speaker that conveys a message.

FIG. 6 is a block diagram of the external view shown in FIG. First
The same parts as those in the figure are designated by the same reference numerals.

SC is a selection circuit, which is a circuit for discriminating between an address signal designating a message sent from the transmission section and real-time data which the operator wants to transmit at that time. In the case of the present embodiment, since it is determined that a telephone number, for example, is transmitted as real-time data after the address signal, the signal transmitted is identified by length or time.

SR is a register which stores the real-time data selected by the selection circuit SC in a serial form.

DP is the display unit shown in FIG. 5 and displays the contents of the register DP.

ROMA is a fixed memory, in which voiced information for notifying the telephone number stored in the register SR by voice is stored, and the numerical information stored in the register SR is used as it is as an address signal.

[Transmitter] FIG. 7 is a premise of the embodiment of the transmitter which sends a signal to the receiver shown in FIG. 6, and the same parts as those in FIG. 4 are denoted by the same reference numerals.

The IBI is an input part and has a numeric keypad NK consisting of a numeric keypad for selecting messages and sending telephone numbers as real-time data.

ENC1 is an encoder that responds to the operation of the numeric keys NK.
It outputs a serial encoded signal.

MEM1 is a memory, and stores the signal from the encoder ENC1 in a serial form. The memory MEM1 has a two-digit capacity for selecting a message and a ten-digit capacity for storing a telephone number.

The operation of the embodiment having the above structure will be described.
First, enter the number of the message to be sent to the person who wants to call by operating the numeric keypad NK of BI. For example, when you want to notify the other party of "visitor desnode reception phone number Shitasai" stored at address "1" in the fixed memory, press "0" and "1" and the numeric key NK.
Then, following this key operation, a key operation for inputting telephone number information is performed.

When the send button TK is finally operated, the memory MEM1
The signal stored in is transmitted to the antenna ANT of the receiving section via the antenna ANT as described above, and the demodulator D
The code signal is demodulated by EM, the memory of the first two digits is input to Buf by the selection circuit SC, and the subsequent digits are distributed to the register SR.

The information stored in the register SR is displayed on the display unit DP and is applied to the fixed memory ROMA, and the voicing information corresponding to the ignited information becomes voice in the synthesizer syn and is transmitted via the amplifier AMP and the speaker SP to the wearer. Tell.

[Embodiment] [Reception Unit] Next, an embodiment of the information transmission device according to the present invention will be described based on the premise of the above-described embodiment.

FIG. 8 is a diagram showing an embodiment according to the present invention.

The receiver of the information transmission device according to the present invention is assumed to be small and lightweight. Therefore, the battery section should be miniaturized as much as possible. For that purpose, the power consumption of the receiver must be reduced. In the receiver, the amplifier ANP
Power consumption is the largest, so to reduce this,
As shown in FIG. 8, power may be supplied to the amplifier AMP only while receiving a radio wave from the transmitter. 8th
In the figure, DET is a signal detection circuit, SS is a power supply on / off circuit, and V is a power supply. The signal detection circuit DET detects a signal from the demodulator DEM and starts supplying power to the amplifier AMP from the power supply V that supplies power to the device, and then the demodulator DEM.
When the EM no longer outputs a signal, the power supply to the amplifier AMP is cut off.

[Receiving Unit] FIG. 9 is a block diagram showing an embodiment according to the present invention, which can be applied to FIGS. 1 and 6 of the premise of the embodiment or FIG. 8 of the embodiment. Since the message is stored in the fixed memory in the premise and the example of the embodiment shown in the above-mentioned figures, when the message is desired to be changed, the memory must be replaced. FIG. 9 is a solution to that point.

RAM is a memory that replaces a fixed memory ROM.

The CPU is a processing unit that performs a data writing process to the memory RAM.

The CROM is a control memory, and stores a procedure for controlling data writing to the memory RAM.

KB is a keyboard having, for example, a katakana key, an alphabet key, a numerical key, and a symbol key.

The contents of the message can be rewritten by providing the above-described configuration in FIGS. 1 and 6 of the premise of the embodiment or in FIG. 8 of the embodiment.

[Effect] As described in detail above, according to the present invention, it is possible to variably store a plurality of message information items to be output based on the information from the input unit for inputting character information, and to specify the specific information items. By receiving, and reading and outputting the corresponding message, you can surely prepare the message you want to convey, and you can notify it efficiently,
Furthermore, it is possible to output message information as real-time data, and further, after receiving by the receiving means, supply power to the output means to save power, which is versatile and can be used. It has become possible to provide a highly efficient selective call receiver.

[Brief description of drawings]

1 is a block diagram showing the premise of an embodiment according to the present invention, FIG. 2 is a diagram showing the contents of the fixed memory shown in FIG. 1, FIG. 3 is an external view of the premise of a transmitting unit according to the present invention, 4 is a block diagram of the premise of the embodiment shown in FIG. 3, FIG. 5 is an external view showing the premise of the embodiment of the present invention, FIG. 6 is a block diagram of the premise of the embodiment shown in FIG. FIG. 7 is a block diagram of the transmitting unit with respect to the receiving unit shown in FIG. 6, FIG. 8 is a block diagram showing an embodiment according to the present invention, and FIG. 9 is a block diagram showing an embodiment according to the present invention. ROM: Fixed memory sys: Synthesizer

Claims (1)

[Claims] 1. A rewritable storage unit capable of variably storing a plurality of message information to be output based on information from an input unit for inputting character information, the message previously stored in the storage unit. Information 1
Wireless receiving means for receiving specific information for specifying one or real-time message information to be transmitted from the transmitting side, and reading out corresponding message information based on the specific information received by the wireless receiving means. Output means for outputting the message information read by the reading means or the received real-time message information for transmission to a user, after receiving by the wireless receiving means, by the output means A selective call receiver comprising a power supply means for supplying power to perform the output.