JPH0537419A - Radio communication equipment - Google Patents

Abstract

PURPOSE:To avoid influence from external noise by executing a digital signal processing to all the signals to a signal line connecting the main body of a radio equipment and an additive part at additive part side and main body side interface signal processing parts. CONSTITUTION:At the time of transmission, a transmitted signal from a transmitter 11 is converted into a digital signal by an interface signal processing part 18 of an additive part 1 and transmitted to a signal line 4 under the control of a control part 26 at a main body 2 of the radio equipment. An interface signal processing part 27 on the side of the main body 2 extracts the transmitted signals and rearranges those signals, and a time division processing is executed at a transmitted signal processing part 28. Under the control of the control part 26, a transmission part 22 executes digital modulation and transmits the signals to an antenna 3. In the case of reception, radio waves received by the antenna 3 receive digital modulation at a reception part 23, time division data are converted to received digital signals by a received signal processing part 29, and the signal processing part 27 transmits those signals to the signal line 4. The interface signal processing part 18 extracts the received digital signals, rearranges those signals and converts them to analog signals, and the signals are outputted from a receiver 14 as voices.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device 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 wireless communication device. In the figure, reference numeral 1 is an operation unit as an addition unit to which a transmission signal is input and a reception signal is output, and 2 is a transmission signal which is modulated and transmitted, and a received signal is demodulated into a reception signal. It is the radio itself.

Reference numeral 3 is an antenna connected to the radio main body 2 for transmitting and receiving the transmission signal and the reception signal,
Reference numerals 4a to 4c are signal lines connecting the operation unit 1 and the wireless device main body 2.

In the operation unit 1, 11 is a transmitter to which a transmitter signal is input, 12 is a transmitter signal amplifier for amplifying the transmitter signal input from the transmitter 11, and 13 is a transmitter signal amplifier. A reception signal amplification unit that amplifies a reception signal sent from the wireless device main body 2, and a receiver 14 that outputs the reception signal amplified by the reception signal amplification unit 13.

Reference numeral 15 is a ten-key pad of the operation section 1, 16 is a display section, and 17 is an operation for controlling the voice bus, processing an operation input from the ten-key 15, and controlling the display on the display section 16. It is a control unit.

Further, in the radio main body 2, a reference numeral 21 is a transmitter for digitizing the transmitter signal transmitted from the transmitter signal amplifier 12 of the operation unit 1 through the signal line 4a and performing time division processing. Reference numeral 22 is a signal processing unit, and 22 is a transmitting unit that performs digital modulation and high frequency amplification of the transmission signal processed by the transmission signal processing unit 21 and radiates from the antenna 3.

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

Reference numeral 25 is an antenna switching unit for switching the connection of the transmission signal processing unit 22 and the reception signal processing unit 23 to the antenna 3 according to the timing of transmission and reception.
Is a wireless device main body control unit that performs control processing of the entire wireless device main body 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 the signal line 4a.
Is sent to the wireless device main body 2 via.

In the radio main unit 2, the reception signal processing unit 2
After receiving by 1 and converting an analog signal into a digital signal, a process for time-division communication is performed and the signal is sent to the transmission unit 22. Under the control of the radio main body control unit 26, the transmission unit 22 digitally modulates a transmission signal such as voice that has been digitally processed, and further amplifies it at a high frequency in order to transmit it during a time slot of transmission.

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 from the antenna 3 into space as a radio wave. At this time, the antenna switching unit 25 connects the antenna 3 to the transmission unit 22 under the control of the radio main body control unit 26.

Further, at the time of reception, the 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 main body control unit 26.

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

In the operation unit 1, the analog reception signal is received and amplified by the reception signal amplification unit 14, and the voice is output from the receiver 14.

The radio main body control unit 2 of the radio main body 2
Reference numeral 6 controls the communication line with the communication partner, time division control, and control of the operation unit 1 via the signal line 4c. In addition, the operation unit 1
The operation control unit 17 controls the audio path of the operation unit 1 and the ten keys 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 of the signals of the signal lines 4a to 4c connecting the operation unit 1 and the radio main unit 2. As shown in the figure, the signals in the signal lines 4a to 4c are always transmitted between an analog signal and a digital signal both during transmission and during reception.

As a document describing a technique related to such a conventional wireless communication device, there is Japanese Patent Laid-Open No. Sho 60/1985.
-239132 publication.

[0018]

Since the conventional wireless communication device is constructed as described above, the sending and receiving signals which are analog signals of voice are always provided during the call, and the operation section 1 and the wireless device. Since the digital signal which is the control signal of the main body 2 travels back and forth in the signal lines 4a to 4c, it is necessary to isolate the analog signal and the digital signal, and the signal line 4a is emitted by the radio wave emitted from the own station. ~ 4c
The analog signal inside is easily affected by interference and external noise, and the software of the radio unit control unit 26 becomes complicated because it monitors the entire radio communication device including the operation unit 1. was there.

The present invention has been made to solve the above problems, and in a wireless communication apparatus that performs transmission and reception in a time-division manner, the call quality is not easily influenced by the outside and its software is simple. An object of the present invention is to obtain a wireless communication device that can be realized by a combination of various things.

[0020]

A wireless communication apparatus according to the present invention is such that data transmission between a radio main unit and an additional section is performed by a digital signal, and the function of storing the signal in the additional section, a digital signal and An interface signal processing unit that has the function of converting analog signals to each other and the function of transmitting the stored signal in response to a transmission request from the radio unit is provided, and the radio unit limits transmission to the additional unit. A main body side interface signal processing unit having a function of performing a function and a function of processing a signal from the addition unit is provided.

[0021]

The interface signal processing unit and the main body side interface signal processing unit according to the present invention are affected by external noise by performing digital signal processing on all the signals of the signal lines connecting the radio main unit and the additional unit. By making the processing difficult, and further, by distributing the processing to the main body of the wireless device and the additional unit, it is possible to realize a wireless communication device in which each unit can be simple software.

[0022]

EXAMPLES Example 1. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the invention described in claim 1. In the figure, 1 is an operation unit as an addition unit, 2 is a radio main unit, 3 is an antenna, 11 is a transmitter, 12 is a transmission signal amplification unit, 13 is a reception signal amplification unit, 1
Reference numeral 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, and 26 is a radio unit control unit. The detailed description is omitted because it is the same as or equivalent to those of the related art marked with.

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

Reference numeral 27 is provided in the main body 2 of the radio device, and at the reception timing, instructs the transmission of the transmission signal accumulated in the interface signal processing section 18, and also receives the received reception signal to the interface signal processing section 18. It is a main body side interface signal processing unit for sending.

Reference numeral 28 denotes the main body side interface signal processing section 2
Reference numeral 7 is a transmission signal processing unit for time-divisionally processing the digitized transmission signal received from the interface signal processing unit 18 and transmitting it to the transmission unit 22, and 29 is a code processing of the reception signal by the digital signal from the reception unit 23. It is a reception signal processing unit that performs the above and sends it to the main body side interface signal processing unit 27.

Reference numeral 4 is a signal line that connects the operation unit 1 and the radio main unit 2 and transmits all the transmission signals, reception signals and control signals transmitted and received between them by digital signals. .

Next, the operation will be described. First, the 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 sent to the interface signal processing unit 18. The interface signal processing unit 18 converts the received transmission signal from an analog signal into a digital signal and temporarily stores it inside.

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

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

Under the control of the radio main body controller 26, the transmitter 22 digitally modulates the time-division-processed data and amplifies it at a high frequency in order to transmit the data in the time slot section of the transmission, and the antenna switching unit 25. To the antenna 3 and is radiated to the space from the antenna 3 as a radio wave.

At the time of reception, the 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 receives signal processing unit 29. Send to.

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

The digital signal sent to the signal line 4 is received by the interface signal processing unit 17 of the operation unit 1, the received digital signal is extracted and rearranged, and then converted into an analog signal to be received. Amplifier 14
Sent to. The reception signal amplified by the reception signal amplification unit 14 is output as voice from the reception unit 14.

The main body side interface signal processing unit 27 of the radio main unit 2 receives the digital transmission signal from the operation unit 1, transmits the digital reception signal received by the radio main unit 2, and It has a function of transmitting and receiving a digital signal for control between the radio main unit 2 and the operation unit 1 and a function of temporarily storing those data.

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

Further, the interface signal processing unit 18 of the operation unit 1 transmits the transmission digital signal to the radio main body 2, receives the reception digital signal received by the radio main body 2, and A function of transmitting and receiving a control digital signal between the main body 2 and the operation unit 1, a function of temporarily storing those data, a function of converting an analog signal into a digital signal, and a function of converting the digital signal into an analog signal. Has the function of converting to.

The radio main body control unit 2 of the radio main body 2
Reference numeral 6 controls the communication line with the other party of the call, time division control, and control of the operation unit 1 via the signal line 4 in the main body side interface signal processing unit 27. In addition, the operation control unit 17 of the operation unit 1
Performs voice path control and control of the numeric keypad 15 and the display unit 16 under the initiative of the wireless device main body control unit 26 of the wireless device main body 2.

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

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

FIG. 3 is a system configuration diagram showing an embodiment of such an invention described in claim 2. The same parts as those in FIG. 1 are designated by the same reference numerals to avoid duplication of description. In the figure, 1a to 1n are a plurality of operation units connected to one wireless device main body 2 by a signal line 4.

FIG. 4 shows the operation units 1a to 1n and the radio main unit 2
FIG. 6 is a timing diagram showing a time relationship of signals on a signal line 4 connecting with each other. As shown in the figure, operation units 1a to 1 for exchanging data 31 with the radio main unit 2 during reception timing.
By transmitting the device address 32 of n during the transmission timing, the operation units 1a to 1n connected to a plurality of units can be identified.

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

Example 3. Further, in the above-described embodiment, the case where data is transmitted and received to and from one operation unit 1a to 1n during one reception timing has been described, but the reception timing is assigned to the plurality of operation units 1a to 1n, and wireless communication is performed. The data reception signal may be exchanged with the machine body 2 in a time division manner.

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

Even in this case, the radio main unit 2
The device addresses 32 of the operation units 1a to 1n that are exchanging data 31a and 31b with each other are transmitted during the transmission timing to enable identification of the operation units 1a to 1n connected to a plurality of units. .

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

Example 4. In each of the above embodiments, the case where the addition 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, it may be a device other than the operation unit of the wireless device, and the same effect as the above embodiment can be obtained.

Example 5. Further, although each of the above-described embodiments has been described as applied to the time division digital radio device, the digital radio device for simultaneous transmission / reception can also be applied to the second to fourth embodiments by digitally communicating the data in the signal line. Has the same effect.

[0049]

As described above, according to the invention described in claim 1, the additional portion has a signal storage function, a mutual conversion function between a digital signal and an analog signal, and a storage signal according to a request from the radio main body. And a main body side interface signal processing unit having a transmission limiting function for the addition unit and a function of processing a signal from the addition unit. Since the data transmission between the main unit and the additional unit is configured to be a digital signal, the signal transmitted and received between the additional unit and the radio main unit is not easily affected by external noise, etc. There is an effect that a wireless communication device can be obtained in which the part of can be configured with simple software.

Further, according to the second and third aspects of the present invention, the device address of the additional unit that transmits / receives a signal to / from the radio device main body at the reception timing is transmitted at the transmission timing. With this configuration, it is possible to obtain a wireless communication device in which a plurality of additional units can be connected to one wireless device main body without changing hardware only by changing software.

[Brief description of drawings]

FIG. 1 is a block diagram showing a wireless communication device according to an embodiment of the invention described in claim 1.

FIG. 2 is a timing diagram showing a time relationship of signals on the signal line.

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

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

FIG. 5 is a timing chart showing an 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 diagram showing a time relationship of signals on the signal line.

[Explanation of symbols]

1, 1a to 1n additional unit (operation unit) 2 radio unit 3 antenna 4 signal lines 18 Interface signal processor 26 Radio unit controller 27 Main unit side interface signal processing unit

Claims (3)

[Claims] 1. An addition unit to which a transmission signal is input and a reception signal is output, and the transmission signal is modulated and radiated from an antenna, and the signal received by the antenna is demodulated into a reception signal. In a wireless communication device that connects with a wireless device main body including a wireless device main body control unit that controls those processes by a signal line and performs transmission and reception in a time-division manner, the transmission signal to be transmitted to the wireless device main body. An interface signal processing unit that digitizes and stores the received signal from the wireless device main body and analogizes the received signal received from the radio main unit, and at the timing of the reception, the transmission signal stored in the interface signal processing unit is transmitted. The main body side interface signal processing unit for instructing the transmission of a speech signal and transmitting the reception signal to the interface signal processing unit is provided in the radio body. Wireless communication device. 2. A plurality of additional units are connected to the radio unit main body by a signal line, and the radio unit main unit control unit of the radio unit main unit transmits the transmission signal and the reception signal at the reception timing with the radio unit main unit. 2. The wireless communication device according to claim 1, wherein the wireless communication device has a function of transmitting the device address of the additional unit that transmits and receives a signal at the transmission timing. 3. A radio body control unit of the radio body,
3. A function for transmitting and receiving the transmission signal and the reception signal to and from the radio main body by time-divisionally allocating the reception timing to the plurality of additional units. The wireless communication device according to.