JPS59221039A - Radio communication device - Google Patents

Abstract

PURPOSE:To perform the immediate selection between busy and idle channels and to shorten the channel searching time by always storing the channel frequency information on busy and idle channels to a memory. CONSTITUTION:A selection means 18 selects channels in response to busy and idle states of these channels, and a memory 26 is used for busy and idle channels and writes the frequency information of the channel selected by the means 18. Thus a channel is selected by the channel frequency information written to the memory 26. In such a way, the busy or idle channel can be immediately selected. In such a way, the searching time for channels is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wireless communication device, and more particularly to a wireless communication device having a memory in which the frequency of a channel to be selected can be written in advance.

2. Description of the Related Art Conventionally, some wireless communication devices have a function (hereinafter referred to as "operation") of communicating with a partner device in various modes such as FM method and SSB method (hereinafter referred to as "mode"). Normally, the frequency bands used by this type of wireless communication equipment are classified into usage categories, and depending on the purpose of operation, there is a need to distinguish between busy channels and empty channels (hereinafter referred to as busy channels and empty channels). If there is no channel, select the operating channel). To select an operating channel, the operation panel 8 is operated as shown in FIG. The operation knob 8 is provided with a dial for selecting the operating frequency and a mode selection switch (not shown) for increasing or decreasing the frequency in predetermined steps to obtain the channel spacing according to the operating mode. There is a selection of transmitting/receiving frequencies for operation (the explanation will be based on the case of love)
Establish the conditions for When the transmission/reception frequency selection conditions are set, the transmission/reception frequency selection circuit 6 sends frequency division information that determines the frequency division ratio of the programmable counter 5d of the PLL circuit 5. As a result, the local signal fL according to the frequency division information
is sent to the mixer 3 and an operating channel is selected. The frequency of the selected operating channel is stored in the memory 7 by operating the operation panel 8 as necessary. memory 7
The @ writing capacity is determined as appropriate so as not to hinder operation.

By specifying the address of the memory 7 in which channel frequency information is stored on the operation panel 8, an operating channel corresponding to the channel frequency information is selected. Channel frequency information can be saved, deleted, refolded, etc. In the figure, l is an antenna, 2 is a rope frequency amplification circuit, 4 is an intermediate frequency amplification circuit,
5a is a phase comparator to which -lμ5 quasi-signal t is input; 5b
is a low-pass filter, and 5c is a VCO.

In the above-mentioned wireless communication device, all writing and reading of channel frequency information into the memory 7 is performed manually using the operation panel 8, and desired results are obtained by combinational logic of turning on and off various dials, push buttons, etc. However, since the memory 7 is not used properly, it has disadvantages such as that the memory 7 is not used properly.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned conventional drawbacks and provide a wireless communication device equipped with a memory in which channel frequency information can be easily stored, erased, and rewritten.

The present invention provides a channel selection means for selecting a channel depending on whether the channel is busy or empty, and a memory for a busy channel or an empty channel in which a channel frequency related to the channel selected by the channel selection means is written, The structure is such that the latest channel frequency information of the operating channel corresponding to the mode in continuous operation is included.

Hereinafter, one embodiment of the wireless communication device according to the present invention will be described in detail with reference to FIG.

In FIG. 2, 18 is a busy/idle channel selection circuit. The busy/empty channel selection circuit 18 includes a voltage detection circuit 19;
Switch 20, AND circuit 22, 23 and OR circuit 24
It consists of The voltage detection circuit 19 operates in response to an AGC signal and a squelch signal generated by an AGC circuit, a squelch circuit, etc. provided in the intermediate frequency amplifier circuit 4. Due to the operation, the output side becomes H level. The switch 20 has a switching contact 20a, a normally closed contact 20b is connected to one input side j of the AND circuit 23, and a normally open contact 20c is connected to the AND circuit 2.
It is connected to one input side of 2. The other input side of the AND circuit 23 is connected to the output side of the voltage detection circuit 19,
The other input side of the AND circuit 22 is connected to the output side of the voltage detection circuit 19 via the inverter 21. The output sides of AND circuits 23 and 22 are respectively connected to the input side of OR circuit 24, and the output side of OR circuit 24 is connected to terminal 18b.
It is connected to the input end of the address register 25 via. The switching device 20 is activated when a busy/empty table switching button 13 provided on the operation panel 9 is operated. A switching contact 20 a of the switching device 20 is connected to an output terminal 28 b of the automatic frequency sweep circuit 28 .

The automatic frequency sweep circuit 28 drives the transmission/reception frequency selection circuit 6 via a multi-output terminal 28a by operating an automatic memory button 14 provided on the operation panel.

Sweep conditions are determined using the channel step button 11. A noguru signal corresponding to the sweep cycle is output to the output terminal 28b.

The address register 25 is the busy/empty channel selection circuit 18
When the terminal 1sb becomes active, it advances and sequentially changes the address of the memory 26 every time.

The memory 26 receives the address designation from the address register 25 and performs the pledge operation when receiving the control signal from the control terminal 26a.The channel frequency and information are input from the transmission/reception frequency selection circuit 6 via the data bus 27. be done. In the figure, reference numeral 15 is an address designation dial, 16 is a write button, 17 is a read button, 10 is an operation mode button, and 12 is a frequency switching dial.

Here, when the busy/empty table switching button 13 is operated, the switch 20 of the busy/empty channel selection circuit 18 is operated.

When the automatic memory button 14 is operated, the automatic frequency sweep circuit 28
The transmitting/receiving frequency selection circuit 6 is controlled accordingly. When the first channel is selected and there is a received signal, the intermediate frequency amplifier 4 generates an AGC (fi signal, etc.) according to the received signal 43, and the output side of the voltage detection circuit 19 becomes H level. Since the other input side of is at L level, the terminal 18b remains inactive.By the automatic frequency sweep circuit 28, j) When the local frequency fL sent from the PLL circuit 5 to the mixer 3 changes, , the next channel is selected. When the next channel is an empty channel, the output side of the voltage/detection circuit 19 is at the L level, and the AND circuit 22 becomes active when the output side of the voltage/detection circuit 19 is sent out from the automatic frequency sweep circuit 28. The value changes and the memory 26 enters the write operation. The memory 26 receives channel frequency information from the reception frequency selection circuit 6 via the data bus 27 in digital mode. This write operation is performed sequentially.

When it is desired to manually write the channel frequency information of the reception frequency selection circuit 6, the desired address is designated with the address designation dial 15 and the write button 16 is operated. The channel frequency information via the data bus 27 is written into the memory 26 by operation (the circuit is omitted). For reading, the channel frequency information via the data bus 27 is written by operating the address designation dial 15 and the read button 17. is input to the reception frequency selection circuit 6.

The wireless communication device according to the present invention includes a selection means for selecting a channel depending on whether the channel is busy or empty, and a memory which is prepared for the busy channel or for the empty channel and writes the channel frequency information selected by the channel selection means. Since the system is configured to include the following, it has the advantage that channel frequency information related to busy channels or idle channels is always stored in memory. Therefore, a channel in use or an empty channel can be selected immediately, and the search time can be shortened compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional wireless communication device, and FIG. 2 is a block diagram showing an embodiment of the wireless communication device according to the present invention. In the figure, l is an antenna, 2 is a high frequency amplification N path, 3 is a mixer, 4 is an intermediate frequency amplifier, 5 is a PLLM path, 6 is a transmitting/receiving frequency selection circuit, 9 is an operation A' channel, 10 is an operation mode button, 11 is the channel step button, 12 is the frequency switching dial, 13 is the busy/empty table switching button, 14 is the automatic memory button, 15 is the address designation dial, 16 is the sleep button, 17 is the read/write button, 18 is the talk button. Hollow/air channel selection circuit, 19 'voltage detection circuit, 20 switch, 21 inverter, 22.23 AND circuit, 24 off 1a1M,
25 is an address register, 26 is a memory, 27 is a data bus, and 28 is an automatic frequency sweep circuit. Patent applicant Yaeshu Musen Co., Ltd. Figure 1

Claims (1)

[Claims] 1. A wireless communication device having a memory for writing the frequency of a channel and a channel selection means for selecting a channel based on the channel frequency information written in the memory (in the Q machine, the channel frequency information is written in the channel frequency information written in the memory). A channel selection means for selecting a channel, and a memory for writing channel frequency information prepared for a busy channel or an empty channel and selected by the channel selection means, the channel frequency information being written in the memory. Select the channel based on the channel frequency information + (W
A wireless communication device characterized by the following features: