JP2795760B2 - Wireless communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication apparatus which performs transmission and reception in a time-division manner.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing a conventional radio communication apparatus. In the figure, reference numeral 1 denotes an operation unit as an additional unit for receiving a transmission signal and outputting a reception signal. Reference numeral 2 denotes a transmission signal which is modulated and transmitted, and a received signal is demodulated into a reception signal. This is the wireless device itself.

[0003] Reference numeral 3 denotes an antenna connected to the radio unit 2 for transmitting and receiving the transmission signal and the reception signal.
Reference numerals 4a to 4c denote signal lines connecting the operation unit 1 and the wireless device main body 2.

In the operation unit 1, reference numeral 11 denotes a transmitter to which a transmission signal is inputted, 12 denotes a transmission signal amplifying unit for amplifying the transmission signal inputted from the transmitter 11, and 13 denotes a transmission signal amplifying unit. A reception signal amplifier 14 amplifies the reception signal sent from the radio unit 2, and a receiver 14 outputs the reception signal amplified by the reception signal amplifier 13.

Reference numeral 15 denotes a numeric keypad of the operation unit 1, 16 denotes a display unit, and 17 denotes an operation for controlling an audio bus, processing an operation input from the numeric keypad 15, controlling display on the display unit 16, and the like. It is a control unit.

Further, in the radio unit 2, reference numeral 21 denotes a transmission for digitizing a transmission signal transmitted from the transmission signal amplifying unit 12 of the operation unit 1 via the signal line 4a and performing time-division processing. A signal processing unit 22 performs digital modulation and high-frequency amplification of the transmission signal processed by the transmission signal processing unit 21 and radiates the signal from the antenna 3.

Reference numeral 23 denotes a receiver for digitally demodulating the received signal received by the antenna 3, and 24 denotes a receiver for converting the demodulated reception signal from a digital signal to an analog signal, and receiving the reception signal of the operation unit 1 via the signal line 4b. This is a reception signal processing unit to be sent to the amplification unit 13.

An antenna switching unit 25 switches the connection between the transmission signal processing unit 22 and the reception signal processing unit 23 to the antenna 3 in accordance with the transmission and reception timings.
Is a radio main unit control unit that performs control processing of the entire radio main unit 2 and gives an instruction to the operation control unit 17 via the signal line 4a.

Next, the operation will be described. First, a transmission signal input from the transmitter 11 at the time of transmission during a call is amplified by the transmission signal amplifier 12 and then transmitted to the signal line 4a.
Is sent to the wireless device main body 2 via the.

In the radio unit 2, the received signal is
After receiving and converting the analog signal into a digital signal in step 1, a process for time-division communication is performed and transmitted to the transmission unit 22. Under the control of the radio main unit control unit 26, the transmission unit 22 digitally modulates a digitally processed transmission signal such as voice for transmission in a transmission time slot section, and further amplifies the transmission signal.

The high-frequency amplified transmission signal is transmitted from the transmission unit 22 to the antenna 3 via the antenna switching unit 25, and is radiated as radio waves from the antenna 3 to space. At this time, the antenna switching unit 25 connects the antenna 3 to the transmission unit 22 under the control of the radio unit control unit 26.

At the time of reception, a radio wave received by the antenna 3 is sent to the receiving unit 23 via the antenna switching unit 25. At this time, the antenna switching unit 25 connects the antenna 3 to the receiving unit 23 under the control of the radio unit control unit 26.

The receiving section 23 digitally demodulates the received signal and sends it to the received signal processing section 24. The received signal processing unit 24 converts the digital signal into an analog signal, and then sends out the signal to the signal line 4 b and sends it to the operation unit 1.

In the operation unit 1, the reception signal converted into an analog signal is received and amplified by a reception signal amplification unit 14, and the reception unit 14 outputs a sound.

Note that the radio unit control unit 2 of the radio unit 2
Reference numeral 6 performs communication line control with the communication partner, time-division control, and control of the operation unit 1 via the signal line 4c. Operation unit 1
The operation control unit 17 controls the audio path of the operation unit 1 and controls the numeric keypad 15 and the display unit 16 under the initiative of the radio unit control unit 26 of the radio unit 2.

FIG. 7 is a timing chart showing the time relationship between the signals on the signal lines 4a to 4c connecting the operation unit 1 and the radio unit 2. As shown in the figure, the signals on the signal lines 4a to 4c always transmit and receive analog signals and digital signals both during transmission and reception. In other words, when sending
A transmission signal, which is a log signal, is transmitted on the signal line 4a and is received.
Indicates that a reception signal, which is an analog signal, is transmitted through a signal line 4b,
Operation control signals, which are digital signals, are transmitted and received
Regardless of the transmission line and the reception time, the signal line 4c
Sent.

Japanese Patent Application Laid-Open No. Sho 60/1985 describes a technique describing such a technique related to a conventional wireless communication apparatus.
-239132.

[0018]

Since the conventional wireless communication apparatus is configured as described above, the wireless communication apparatus always transmits (transmits) during a call.
And during any of the time of reception), the transmission signal and the reception signal is an analog signal of audio, and the operation unit 1 and the control signals of the wireless device main body 2 which is a digital signal back and forth in the signal line 4a~4c And it is necessary to isolate the analog and digital signals . In addition, Shin
The analog signals in the signal lines 4a and 4b are affected by interference and external noise.
Signal, and the signal
Because of the influence of noise
I will. Further, the software of the wireless device main body control unit 26 has a problem that the software is complicated because it monitors the entire wireless communication device including the operation unit 1.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In a wireless communication apparatus which performs transmission and reception in a time-division manner, the communication quality is hardly affected by external influences and its software is simple. It is an object of the present invention to obtain a wireless communication device that can be realized by a combination of such devices.

[0020]

A radio communication apparatus according to the present invention performs data transmission between a radio unit and an additional unit by using a digital signal, a function of storing a signal in the additional unit, and a digital signal. An interface signal processing unit that has the function of converting analog signals to and from each other, and the function of transmitting stored signals in response to a transmission request from the radio unit, has the radio unit restrict transmission to the additional unit. And a main body side interface signal processing unit having a function of processing a signal from the additional unit.

[0021]

[Action] interface signal processing unit and the main body side interface signal processing section in the present invention, by all digital signal processing a signal of the signal line connecting the additional part and the radio device body, not easily affected by the external noise The digital signal on the signal line
By transmitting the signal in the
By making the processing less susceptible and further distributing the processing to the wireless device main body and the additional unit, a wireless communication device can be realized in which each part can be simple software.

[0022]

[Embodiment 1] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the first aspect of the present invention. In the figure, 1 is an operation unit as an addition unit, 2 is a radio unit, 3 is an antenna, 11 is a transmitter, 12 is a transmission signal amplifier, 13 is a reception signal amplifier, 1
4 is a receiver, 15 is a numeric keypad, 16 is a display unit, 17 is an operation control unit, 22 is a transmission unit, 23 is a reception unit, 25 is an antenna switching unit, 26 is a radio unit control unit, and the same reference numerals are used in FIG. Since they are the same as or equivalent to those of the related art with, the detailed description is omitted.

Numeral 18 is provided in the operation unit 1 and converts a transmission signal to be sent to the radio unit 2 from an analog signal to a digital signal, temporarily stores the signal, and receives a reception signal received from the radio unit 2. An interface signal processing unit that converts a digital signal into an analog signal.

Numeral 27 is provided in the radio main unit 2 and instructs transmission of the transmission signal stored in the interface signal processing unit 18 at the reception timing, and also transmits the received reception signal to the interface signal processing unit 18. This is the main body side interface signal processing unit to send out.

Reference numeral 28 denotes a main body side interface signal processing unit 2
Reference numeral 7 denotes a transmission signal processing unit which time-divisionally processes the digitized transmission signal received from the interface signal processing unit 18 and sends it to the transmission unit 22. Reference numeral 29 denotes code processing of the reception signal by the digital signal from the reception unit 23. And a transmission signal to the main body side interface signal processor 27.

Reference numeral 4 denotes a signal line for connecting the operation unit 1 and the radio main unit 2 and transmitting all of a transmission signal, a reception signal, and a control signal transmitted and received between the two as digital signals. .

Next, the operation will be described. First, a transmission signal input from the transmitter 11 at the time of transmission during a call is amplified by the transmission signal amplifier 12 and then transmitted to the interface signal processing unit 18. The interface signal processing unit 18 converts the received transmission signal from an analog signal to a digital signal and temporarily stores the signal therein.

The transmission signal based on the stored digital signal is transmitted to the signal line 4 at the reception timing under the initiative of the radio main unit control unit 26, and is transmitted to the main unit side interface signal processing unit 27.

The main body side interface signal processing section 27 extracts a transmission signal from the received digital signal, rearranges the signal, and sends the rearranged signal to the transmission signal processing section 28. The transmission signal processing unit 28 performs a process for performing time-division communication on the transmission signal and sends the processed signal to the transmission unit 22.

Under the control of the radio main unit control unit 26, the transmission unit 22 digitally modulates the time-division-processed data, amplifies it high-frequency, and transmits it to the antenna switching unit 25 under the control of the radio unit control unit 26. , And radiates to the space from the antenna 3 as radio waves.

At the time of reception, a radio wave received by the antenna 3 is sent to the receiving unit 23 via the antenna switching unit 25, and the receiving unit 23 digitally demodulates the received signal and performs a reception signal processing unit 29. Send to

The reception signal processor 29 converts the time-division data into a reception digital signal, and then sends it to the main unit interface signal processor 27. The main body side interface signal processing section 27 temporarily stores the digital signal as a digital signal, and sends out the stored digital signal to the signal line 4 at the timing of reception.

The digital signal transmitted to the signal line 4 is received by the interface signal processing unit 17 of the operation unit 1, and the received digital signal is extracted and rearranged. Amplifier 14
Sent to The reception signal amplified by the reception signal amplifying unit 14 is output as voice from the receiver 14.

The interface signal processing section 27 on the main unit side of the radio unit 2 includes a process of receiving a transmission digital signal to the operation unit 1, a process of transmitting a reception digital signal received by the radio unit 2, and It has a function of transmitting and receiving digital signals for control between the wireless device main body 2 and the operation unit 1 and a function of temporarily storing those data.

The main body side interface signal processing section 27
Controls the connected transmission signal processing unit 28, reception signal processing unit 29, and interface signal processing unit 18 of the operation unit 1 under the main control of the radio unit control unit 26.

The interface signal processing unit 18 of the operation unit 1 includes a process of transmitting a transmission digital signal to the radio unit 2, a process of receiving a reception digital signal received by the radio unit 2, and a process of receiving the radio signal. A function of transmitting and receiving digital signals for control between the main body 2 and the operation unit 1, a function of temporarily storing the data, a function of converting an analog signal into a digital signal, and a function of converting a digital signal into an analog signal Has the ability to convert to.

The radio unit control unit 2 of the radio unit 2
Reference numeral 6 denotes a main unit-side interface signal processing unit 27 that controls a communication line with the communication partner, time division control, and control of the operation unit 1 via the signal line 4. The operation control unit 17 of the operation unit 1
Performs voice path control and controls the numeric keypad 15 and the display unit 16 under the initiative of the wireless device main unit control unit 26 of the wireless device main unit 2.

FIG. 2 is a timing chart showing the time relationship of the signals on the signal line 4 connecting the operation unit 1 and the radio unit 2. As shown in the figure, the data in the signal line 4 is not transmitted during transmission, and the data 31 is transmitted bidirectionally only during reception. The transmission is controlled by the main body interface signal processing unit 27 under the initiative of the radio main unit control unit 26 of the radio main unit 2.

Embodiment 2 FIG. In the above embodiment, the case where one operation unit as an additional unit is connected to one radio body is described. However, a plurality of operation units may be connected to one radio body. Good.

FIG. 3 is a system configuration diagram showing one embodiment of such an invention described in claim 2. The same parts as those in FIG. 1 are denoted by the same reference numerals, and the description will not be repeated. In the figure, reference numerals 1a to 1n denote a plurality of operation units connected to one radio body 2 by a signal line 4.

FIG. 4 shows the operation units 1a to 1n and the radio unit 2
FIG. 4 is a timing chart showing a time relationship of signals on a signal line 4 connecting the signals. As shown in the figure, the operation units 1a to 1 which exchange data 31 with the wireless device main body 2 during reception timing.
By transmitting the n device addresses 32 during the transmission timing, the operation units 1a to 1n connected to each other can be identified.

The internal configurations of the operation units 1a to 1n and the radio unit 2 are the same as those shown in FIG. 1, but the radio unit control unit 26 of the radio unit 2 has the above-described processing functions. This function is realized, for example, only by changing software and without changing hardware.

Embodiment 3 FIG. Further, in the above-described embodiment, a case has been described in which data is exchanged with one of the operation units 1a to 1n during one reception timing. However, the reception timing is assigned to a plurality of operation units 1a to 1n, The transmission and reception of the data reception signal with the main unit 2 may be performed in a time-division manner.

FIG. 5 is a timing chart showing one embodiment of such an invention described in claim 2. As shown in the figure, the reception timing is divided into two, and data 31a and 31b transmitted and received between the different operation units 1a to 1n and the wireless device main body 2 are transmitted in each of the two.

In this case, also in this case,
The device addresses 32 of the operation units 1a to 1n that are transmitting and receiving the data 31a and 31b are transmitted during the transmission timing, thereby enabling the identification of the plurality of operation units 1a to 1n connected. .

Also in this case, the above-mentioned processing function is provided in the radio main unit control unit 26 of the radio main unit 2, and this function is realized, for example, only by changing software and without changing hardware.

Embodiment 4 FIG. In each of the above embodiments, the case where the additional unit is the operation unit of the wireless device has been described.
If the terminal device connected to the wireless device has such a signal system, a device other than the operation unit of the wireless device may be used, and the same effect as in the above-described embodiment can be obtained.

Embodiment 5 FIG. Although the above embodiments have been described with reference to the case where the present invention is applied to a time-division digital radio, the digital radios of simultaneous transmission and reception can also be implemented by digitally communicating data in signal lines according to the second to fourth embodiments. Has the same effect.

[0049]

As described above, according to the first aspect of the present invention , the signal line is connected to the additional unit, and the additional unit is connected to the radio unit.
The analog transmission signal to be sent is digitized and stored, and
The timing of reception is controlled by the control signal from the line machine.
The transmitted transmission signal is transmitted and the
An interface that receives digital reception signals and converts them to analog
A face signal processing unit is provided.
Line is connected and the digital reception signal is interfaced.
To the source signal processor at the reception timing.
The digital signal transmitted from the interface signal processor
Signal interface on the main unit that receives the signal
The signal in the signal line is affected by external noise, etc.
Digital signals that are less susceptible to
Make the station less susceptible to noise from radio waves
In addition, there is an effect that a wireless communication apparatus in which individual parts can be configured with simple software is obtained.

Further, according to the second and third aspects of the present invention, the device address of the additional unit which transmits and receives signals to and from the radio unit at the reception timing is transmitted at the transmission timing. Therefore, there is an effect that a wireless communication device can be obtained in which a plurality of additional units can be connected to one wireless device main body by only changing software without changing hardware.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a wireless communication apparatus according to an embodiment of the present invention.

FIG. 2 is a timing chart showing a time relationship between signals on the signal line.

FIG. 3 is a system configuration diagram showing one embodiment of the invention described in claim 2;

FIG. 4 is a timing chart showing a time relationship on the signal line.

FIG. 5 is a timing chart showing one embodiment of the invention described in claim 3;

FIG. 6 is a block diagram showing a conventional wireless communication device.

FIG. 7 is a timing chart showing a time relationship between signals on the signal line.

[Explanation of symbols]

 1, 1a to 1n Additional unit (operation unit) 2 Radio unit 3 Antenna 4 Signal line 18 Interface signal processing unit 26 Radio unit control unit 27 Main unit side interface signal processing unit

Claims (3)

(57) [Claims] A transmission signal is input from the outside,
An additional unit for outputting a reception signal to the transmission unit;
When the signal processing of the recording and reception signal is performed and time-division wireless communication is performed
Both having a function of controlling the operation of the additional unit
Connecting the main body, the additional unit and the radio main body,
Controlling the operation of the transmission signal, the reception signal, and the additional unit.
And a signal line for transmitting a control signal to be performed
, The signal line is connected to the additional unit,
Digitizing and storing the analog transmission signal sent to the body
And receive it according to the control signal from the radio unit.
Sending the transmission signal accumulated at the timing
And a digital reception signal from the radio unit.
Interface signal processing unit that receives
In addition, the signal line is connected to the radio body,
Processing the received signal of a digital device through the interface signal
Unit at the time of reception, and
The digital transmission signal from the interface signal processing unit.
A wireless communication device provided with a main body side interface signal processing unit for receiving the signal . 2. A plurality of additional units are connected to the radio unit by a signal line, and the transmission signal and the reception signal are transmitted to a radio unit control unit of the radio unit at the timing of reception with the radio unit. 2. The wireless communication device according to claim 1, further comprising a function of transmitting a device address of the additional unit that transmits and receives signals at the transmission timing. 3. The wireless device control section of the wireless device body,
3. The apparatus according to claim 2, wherein the reception timing is assigned to the plurality of additional units in a time-division manner, and a function of transmitting and receiving the transmission signal and the reception signal to and from the wireless device body is provided. A wireless communication device according to claim 1.