JP3177375B2 - Specified low power transceiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-channel access type low power transceiver.

[0002]

2. Description of the Related Art Conventionally, as a specific low power transceiver, there is a transceiver that performs transmission and reception by a method called a multi-channel access method (hereinafter abbreviated as an MCA method). This system is a system that simplifies transmission / reception operations by automatically selecting a vacant channel from a large number of existing channels. Specifically, transmission / reception is performed at an initial stage of a wireless connection operation. The communication channel is specified by the control channel signal, and the communication channel is switched to the communication channel specified by the control channel signal to perform communication.

[0003] Such a conventional specified low-power transceiver can transmit information only by voice, and it takes time and effort to transmit and receive various data. , The receiver, if both are not present, communication is not possible, and even if the receiver who was away from the transceiver returns, it can not confirm whether there is an incoming call while it was away, However, it is almost impossible to block communication voice, and therefore, there is an inconvenience that even if it is desired to maintain confidentiality of information, it is difficult.

[0004] In order to solve such inconveniences, the present applicant has proposed a specific low power transceiver which enables character information communication. This solves the above-mentioned inconvenience in a system in which an assigned channel is automatically searched by using a DTMF signal which is a dial signal having a high frequency. Specifically, transmission and reception are performed at an initial stage of a wireless connection operation. DT included in the control channel
Character information is synthesized in the MF signal, and character information is extracted from the synthesized signal and displayed.

As an information communication device capable of simply transmitting text information, there is a pager, a so-called pager.

[0006]

However, the specific low power transceiver improved in this way includes only the DTMF signal transmitted and received in the initial stage of the wireless connection operation.
There is a problem that character information cannot be synthesized and the amount of information that can be transmitted and received is extremely small.

Further, there is a problem that the pager can only perform character information communication, cannot perform voice information communication, and is insufficient as an information communication means.

Accordingly, an object of the present invention is to provide a specific low-power transceiver capable of communicating abundantly with character information in addition to voice information.

[0009]

In order to achieve the above object, according to the present invention, a communication channel is designated by a control channel signal transmitted / received at an initial stage of a wireless connection operation, and the communication channel signal is designated by the control channel signal. A data memo that stores character data in a specific low power transceiver of a multi-channel access system in which a channel is shifted to a specified communication channel to transmit and receive a communication signal.
And characters for storing character data in the data memory.
Character data is written in the data input means and the data memory.
When the send key is operated in a state in which
After having added the character specification data in the character data stored in the Tamemori, transmission means for transmitting the communication channel to generate a transmission signal from the character data, when receiving a radio signal including a speech channel signal together, Separating the character data from the received communication channel signal based on the character designation data, and separating the separated character data
Receiving means to be stored in the data memory, the data
While the character data stored in the data memory Ru and display means for creating and displaying character information, the transmission means
But no character data is stored in the data memory
When the send key is operated in the
The transmission signal generated by the addition and the audio signal input to the microphone
The specified low power transceiver is configured to transmit on the call channel .

[0010] The present invention, in addition to the above structure,
Set when character data is stored in data memory
When a key is operated, it is stored in the data memory.
While having its own memory for storing character data,
When the call key is operated, the station memory
Call the stored character data in the
It was configured to store it in Mori.

[0011]

[0012]

[0013]

According to the above arrangement, since character data is combined with a communication signal continuously transmitted and received on the communication channel, a sufficient and sufficient amount of character information communication can be obtained.

Although voice data and character data are mixed in a communication channel signal, character designation data is added to the character data, and it is necessary to detect the character designation data upon reception. Thus, the presence or absence of character data can be detected, so that voice data and character data can be easily separated.

Further, stores the minute isolated character data, if I the stored contents in response to a call comprises a local station memory for outputting the Viewing means the recipient is away from the specified low-power transceiver character information received during the self
The station memory stores it, and when the receiver returns,
It can be confirmed by displaying the stored contents on the display means.

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific low power transceiver according to an embodiment of the present invention will be described in detail with reference to the drawings. First, a description will be given of a data format of a communication signal used in the specific low power transceiver. This specific low-power transceiver is an MCA-type specific low-power transceiver similar to the conventional example, and specifies a communication channel with a control channel signal transmitted and received in an initial stage of a wireless connection operation.
The channel is switched to the communication channel specified by the control channel signal to transmit and receive the communication signal.

The data format of the control channel signal 50 is, as shown in FIG.
1, squelch signal data 52, and communication channel designation signal data 53 are sequentially arranged in parallel. The rule specification signal 51 is composed of signal data specified by rules such as bit synchronization signal data, frame synchronization signal data, and call name signal data (not shown). The squelch signal data 52 is a signal for determining whether or not to start communication. The squelch signal data 52 is set beforehand by a transmitting station and a receiving station. This squelch signal data plays the role of a recitation number. The communication channel specifying signal data 53 is a signal for specifying a channel for transmitting and receiving a communication signal.

The communication channel signal 55 includes a voice communication signal 56 and a character communication signal 57. The data format of the voice communication signal 56 is the legal specification signal data 51.
And the voice mode designation signal data 58 and the squelch signal data 52 are sequentially arranged in parallel. The rule specifying signal data 51 has the same configuration as the rule specifying signal data 51 of the control channel signal 50 described above. The audio mode designation signal data 58 is signal data for specifying that this signal is an audio signal. Squelch signal data 5
2 is squelch signal data 52 of the control channel signal 50
It has the same configuration as. Normally, an audio signal 59 is transmitted following the squelch signal data 52.

The data format of the character communication signal 57 includes a legal specification signal data 51, a character mode specification signal data 60, a squelch signal data 52, and a character data 6.
1 are sequentially arranged in parallel. The rule specifying signal data 51 has the same configuration as the rule specifying signal data 51 of the control channel signal 50 described above. The character mode designation signal data 60 is signal data that specifies that this signal is a character signal. Squelch signal data 52
Has the same configuration as the squelch signal data 52 of the control channel signal 50.

Next, the configuration of the specific low power transceiver 1 will be described with reference to the block diagram of FIG. The specified low-power transceiver 1 includes a character data input unit 2, a transmission unit 3, a reception unit 4, an audio signal input unit 5, a received voice utterance unit 6, a display unit 7, and an antenna 8.

The character data input means 2 includes an input section 9 for inputting character / numerical information and arithmetic information by input keys (not shown), and a character / numerical information and arithmetic information input by the input section 9 for character data. And a character data conversion circuit 10 for converting the data into a character data.

The transmitting means 3 comprises a signal shaping circuit 11 for shaping the data of the voice communication signal 56 and the data of the character communication signal 57, and the control channel signal 50, the voice communication signal 56 and the character communication signal based on these data. And a transmission circuit 13 for transmitting a transmission signal including a control channel signal 50, a voice communication signal 56, a voice signal 59, and a character communication signal 57 from the antenna 8. I have.

The receiving means 4 includes a receiving circuit 14 for receiving a transmission signal from the antenna 8, a reception signal decoding circuit 15 for decoding the reception signal received by the reception circuit 14 into data of 0 and 1 code strings, and a reception signal decoding circuit 15. A character data separation circuit 16 for performing operations such as extracting character data 61 from data decoded into a 0, 1 code string by a circuit 15;
The address counter 17 adds an address to the character data 61 separated by the character string, and the character data 6 to which the address is added.
1 is provided.

The audio signal input means 5 includes a microphone 19 for audio input, an amplifier 20 for amplifying the audio signal 59 input to the microphone 19, and a microphone mute for cutting off the audio signal 61 when transmitting a character communication signal 57 or the like. And a circuit 21.

The received voice uttering means 6 includes an amplifier 22 for amplifying the received signal, and a speaker 23 for uttering the received signal amplified by the amplifier 22 as a voice signal 59. Further, the receiving voice uttering means 6 includes a speaker mute circuit 24 between the amplifier 22 and the receiving circuit 14.
The speaker mute circuit 24 cuts off the input of a reception signal to the reception sound generation means 6 in response to the separation of the character data 65 by the character data separation circuit 16.

The display means 7 stores a display data memory 25 for storing character data 61 and the like sent from the reception memory 18 and the character data conversion circuit 10 for each display screen, and a character display pattern corresponding to the character data 61. CG
The liquid crystal display includes a memory 26, a liquid crystal drive circuit 27, and a liquid crystal display unit 28 driven by the liquid crystal drive circuit 27.

In the specific low power transceiver 1, the character data 61 inputted to the character data
An operation circuit 29 for performing an operation based on the data, and a local station memory 30 for retrieving and storing the contents stored in the display data memory 25
A calculator mode setting key 31 for turning on / off the calculation operation in the calculation circuit 29; and a self-station memory setting key 32 for turning on / off an operation of outputting the stored contents of the display data memory 25 to the self-station memory 30. A local memory call key 33 for turning on / off the operation of calling the stored contents stored in the local memory 30, and a receive memory call key 34 for turning on / off the operation of calling the stored contents of the reception memory 18.
And a transmission key 35 for performing ON / OFF of a transmission operation of various transmission signals.

Further, the specific low power transceiver 1
Then, the signal shaping circuit 11, the receiving memory 18, the address counter 17, the character data separating circuit 16, the arithmetic circuit 29,
The character data conversion circuit 10 and the own station memory 30 are constituted by a microcomputer 36. Further, the transmission signal generation circuit 12 and the reception signal decoding circuit 15 are composed of an FSK modem (for FSK modulation) or an MSK modem (for MSK modulation).

In this embodiment, the signal shaping circuit 11 constitutes a designated data adding section, the transmission signal generating circuit 12 constitutes a character transmission signal generating section, and the character data separating circuit 16 constitutes a character data separating section. I have.

Next, the transmission / reception operation of the specific low power transceiver 1 will be described with reference to the flowcharts of FIGS.

= Both transmitting station and receiving station = Squelch number registration operation First, the transmitting station and the receiving station mutually determine a squelch number, and input the squelch number to the input section 9 of both the transmitting and receiving stations (S1). ). The input squelch number is converted into squelch signal data 52 by the character data conversion circuit 10 (S2), and is further input to the display data memory 25 (S3) and registered. Display data memory 25
The squelch signal data 52 registered in the CG memory 26
Is converted into a display pattern (S4), and is displayed on the liquid crystal display unit 28 via the liquid crystal drive circuit 27 (S5), so that it can be confirmed. When the registration of the squelch signal data 52 is completed, the reception standby state is set on the control channel (S7).

= Transmitting station = Transmission of control channel signal Transmission key 3 without receiving control channel signal 50
5 is turned on (S8). Then, the microphone mute circuit 21 operates to cut off the voice input of the microphone 19 (S9).
After that, the signal shaping circuit 11 is operated, and the squelch signal data 52 (displayed on the liquid crystal display unit 28) stored in the display data memory 25, the communication channel designation signal data 53, and the regulation designation signal data 51 ( These data are stored in the microcomputer 36) to create control channel signal data (S10). Then, the control channel signal data is converted into a control channel signal 50 by the transmission signal generation circuit 12 and then transmitted from the antenna 8 by the transmission circuit 13. After the transmission of the control channel signal 50, the process waits in a state where the reception frequency of the receiving circuit 14 has been shifted to the communication channel designated by the communication channel designation signal data 53 (S11).

Transmission of voice signal When the transmission key 35 is turned on (S12) while the communication channel is on standby, the microphone mute circuit 21 is activated and the signal shaping circuit 11 is activated while the voice input of the microphone 19 is cut off. Then, the squelch signal data 52, the regulation specifying signal data 51, and the voice mode specifying signal data 58 registered in the display data memory 25 are combined to generate voice communication signal data (S13). Then, after the voice communication signal data is converted into the voice communication signal 56 by the transmission signal generation circuit 12, the data is transmitted by the transmission circuit 13 through the communication channel (S14).

Immediately after the transmission of the audio communication signal 56, the operation of the microphone mute circuit 21 is stopped to cancel the interruption of the audio input (S15), and the audio signal 59 input to the microphone 19 is amplified by the amplifier 20. After the voice communication signal 56, the transmission circuit 13 transmits the voice communication signal on the communication channel (S16).

Input of character information If character information is input (S31) without turning on the transmission key 35 while the communication channel is on standby, the input character information is converted into character data 61 by the character data conversion circuit 10. (S32) Then, the display data memory 25
(S21). The character data 61 input to the display data memory 25 is converted into a display pattern by the CG memory 26 (S28), and is confirmed by being displayed on the liquid crystal display unit 28 through a driving operation by the liquid crystal driving circuit 27 (S29). it can.

If it is desired to store the character data 61 after inputting the character information, the user sets the character data 61 in the display data memory 25 by turning on the own station memory setting key 33 (S27). The data is input to the own station memory 30 and stored here (S30).

Transmission of character signal When the transmission key 35 is turned on (S22) in a standby state on the communication channel and character information is input, the microphone mute circuit 21 is activated to interrupt the voice input of the microphone 19 ( S23) After that, the signal shaping circuit 11 is operated, and the character data 61 stored in the display data memory 25 (being displayed on the liquid crystal display unit 28) and the squelch signal data registered in the display data memory 25 The character communication signal data is created by synthesizing the data 52 and the regulation specifying signal data 51 and the character mode specifying signal 60 (the data 51 and 60 are stored in the microcomputer 36) (S24). Then, the character communication signal data is converted into a character communication signal 57 by the transmission signal generation circuit 12 (S25), and then transmitted from the communication channel by the transmission circuit 13 (S26).

When the calculator mode setting key 31 is turned on (S17) during standby on the call channel and character information is input to the input section 9 (S18), the character information is converted into an arithmetic command by the character data conversion circuit 10. After the conversion (S19), the arithmetic circuit 29 performs arithmetic processing (S20).
The data during the calculation and the result of the calculation are stored in the display data memory 2.
5 (S21), and further stored in the display data memory 2
The operation data stored in step 5 is converted into a display pattern in the CG memory 26 (S28), and can be confirmed by displaying on a liquid crystal display unit (S29) through a driving operation in a liquid crystal driving circuit.

When the transmission key 35 is turned on (S22) after the calculation operation is completed, the microphone mute circuit 21 is activated to interrupt the voice input of the microphone 19 (S2).
3) After that, the signal shaping circuit 11 is operated to operate the arithmetic data (displayed on the liquid crystal display unit 28) stored in the display data memory 25, the regulation specifying signal data 51, the squelch signal data 52, and the character mode specifying signal. The data 60 is synthesized to create character communication signal data (S24). After converting the character communication signal data into the character communication signal 57 by the transmission signal generation circuit 12 (S25), the transmission circuit 1
Then, the data is transmitted on the communication channel (S26).

If the user wants to transmit the character information stored in the own station memory 30 while waiting on the call channel,
The own station memory call key 33 is turned on (S33). Then, the character data 61 stored in the own station memory 30 is called (S34), and further, the display data memory 25 is read.
(S21). The character data 61 sent to the display data memory 25 is converted into a display pattern (S28), and is displayed on the liquid crystal display unit through a driving operation in the liquid crystal driving circuit 27 (S29). Can be confirmed.

After confirming the called character data 61, when the transmission key 35 is turned on (S22), the microphone mute circuit 21 is activated to interrupt the voice input of the microphone 19 (S23), and then the signal shaping circuit 11 is turned off. Is activated, the character data 61 input to the display data memory 25, the squelch signal data 52 registered in the sign data memory 25, and the legal designation signal data 51 and the character mode designation signal 60 stored in the microcomputer 36. Are combined to create character communication signal data (S24). After converting the character communication signal data into the character communication signal 57 by the transmission signal generation circuit 12 (S25), the transmission circuit 1
Then, the data is transmitted on the communication channel (S26).

= Reception station = Reception of control channel signal The reception station is waiting on the control channel.
When the control channel signal 50 is received, the microphone mute circuit 21 is operated to interrupt the voice input of the microphone 19 (S
35), and decodes the received control channel signal 50 into data of 0, 1 code string by the signal decoding circuit 15 (S3).
6) Yes. Then, the decoded data is separated by the character data separation circuit 16 into the regulation specifying signal data 51, the squelch signal data 52, and the communication channel specifying signal data 53, and the squelch signal data 52 is registered. It is determined whether the data matches the data 52 (S3).
7) Yes. If the squelch signal data 52 matches, the reception channel is shifted to the communication channel designated by the communication channel designation signal data 53, and waits (S38).

Receiving a voice signal While waiting on a call channel, a call channel signal 55
Is received (S39), while the speaker output is cut off, the communication channel signal 55 received by the reception signal decoding circuit 15 is decoded into 0, 1 code string data (S40), and the decoded data is further converted into a character data separation circuit. At 16, the signal is separated into various signal data.

The voice mode designation signal data 58 is present in the separated signal data (S41), and the squelch signal data 52 in the separated signal data matches the registered squelch signal data 52 (S42). Then, the received signal is determined as the audio signal 59, the operation of the speaker mute circuit 24 is stopped, and the output to the speaker is released (S43). Therefore, the received audio signal 59 is output from the speaker 23 via the amplifier circuit 22 (S44).

Character signal reception On the other hand, character mode designation signal data exists in the separated signal data (S45), and squelch signal data 5 in which squelch signal data 52 in the signal data is registered.
If it matches 2 (S46), the received signal is determined as a character signal, and character data 61 added to the end of the communication signal is sent to the address counter 17. The address counter 17 adds the RAM address sequentially counted up to the input character data 61 (S47), and then adds the address-added character data 61 to the reception memory 1.
8 (S48). The reception memory 18 further inputs the maximum value (latest) address of the input character data 61 to the display data memory 25 (S49). The character data 61 input to the display data memory 25 is stored in the CG memory 26.
Is converted into a display pattern (S51), and is displayed on the liquid crystal display unit 28 through a driving operation in the liquid crystal driving circuit 27 (S51)
52).

After the character information is input to the display data memory 25 and the own station memory setting key 32 is turned on (S50), the character data 61 stored in the display data memory 25 is stored in the own station memory 30. It is input and stored here (S56).

The display of the received character data 61 on the liquid crystal display unit 28 is stopped after a predetermined time has elapsed, and a message such as "character data received" is displayed on the liquid crystal display unit 28 instead (S53). ). Therefore, when the character data 61 is received when there is no receiver at the receiving station, after confirming the display such as "character data received", the reception memory call key 34 is turned on (S54), and the reception memory is turned on. The character data 61 sequentially counted down from the maximum value in 18 is called (S55), sent to the display data memory 25 (S49), and displayed on the liquid crystal display in the same manner as described above, so that the received contents can be confirmed.

The character information to be transmitted and received includes not only characters and numbers, but also various pictograms 70 as shown in FIG.
Is created and registered, and the pictogram 70 is transmitted / received, thereby enriching the information content.

[0050]

As described above, according to the present invention, since character information is transmitted and received using a communication channel signal, the character information can be transmitted and received with abundant information as well as voice information.

[0051] In addition, stores the frequency separated character data, if Sonaere the stored contents in response to a call to the own station memory for outputting the Viewing means, even if the recipient is not in the receiving station also, the received contents can see the received content later been stored the own station memory, correspondingly, it is increased information transmission capability of the transcriptome sheet over server, convenience is increased.

[0052]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a specific low power transceiver according to one embodiment of the present invention.

FIG. 2 is a flowchart (part 1) illustrating an operation procedure of the specific low power transceiver.

FIG. 3 is a flowchart (part 2) illustrating an operation procedure of the specific low power transceiver.

FIG. 4 is a flowchart (part 3) illustrating an operation procedure of the specific low-power transceiver.

FIG. 5 is a diagram showing data formats of a control channel signal and a communication channel signal.

FIG. 6 is a diagram showing a display example of pictograph data.

[Explanation of symbols]

 2 Character data input means 3 Transmitting means 4 Receiving means 7 Display means 11 Signal shaping circuit (designated data adding unit) 12 Transmission signal generating circuit (Character transmission signal creating unit) 13 Transmission circuit 14 Receiving circuit 16 Character data separation circuit (Character data Separation unit) 50 control channel signal 55 communication channel signal 60 character mode designation signal data 61 character data

Continuation of the front page (56) References JP-A-3-74940 (JP, A) JP-A-63-105533 (JP, A) JP-A-4-32321 (JP, A) JP-A-4-18823 (JP) JP-A-61-41236 (JP, A) JP-A-3-101324 (JP, A) JP-A-61-10341 (JP, A) (58) Fields studied (Int. Cl. ⁷ , DB Name) H04B 7/00 H04B 7/02-7/12 H04B 7/24-7/26 H04L 1/02-1/06 H04Q 7/00-7/38

Claims (2)

(57) [Claims] 1. Multi-channel access for designating a communication channel with a control channel signal transmitted / received at an initial stage of a wireless connection operation, and switching to a communication channel specified by the control channel signal to transmit / receive a communication signal. in certain low-power transceiver scheme, a data memory for storing character data, character data and stores the character data in the data memory
Input means and character data stored in the data memory.
When the transmission key is operated, it is stored in the data memory.
After having added the character specification data into character data that is, <br/> transmission means for transmitting the communication channel to generate a transmission signal from the character data, and receives a radio signal including a speech channel signal with to, and from a communication channel signal received based on the character designation data separating said character data, and the separated statement
And receiving means for storing the character data in the data memory, the one from the character data stored in the data memory Ru and display means for creating and displaying character information, the transmission unit, a character in the data memory Data is memorized
When the send key is operated while the
The transmission signal generated by adding the
A specified low power transceiver for transmitting a voice signal to be transmitted through a communication channel . 2. Character data is stored in said data memory.
When the setting key is operated while the
The local memory that stores the character data stored in the memory
On the other hand, when the call key is operated, the self-station memory
Recalls character data stored in the station memory and
2. The specified low power transceiver according to claim 1, wherein the transceiver is stored in a data memory .