JPS6042951A - Individual selective calling receiver - Google Patents

Abstract

PURPOSE:To execute efficiently a series of check by allowing the test mode to be set by operating only a reset switch of a receiver. CONSTITUTION:When power is applied (101, 102) while a reset switch is depressed, a timer starts counting (111). When the time is out (112), the receiver enters the test mode I (113). When a connecting ring tone is generated once for 1sec succeedingly and a display device exists, the ''E1-'' display appears on the display device 4. In this mode, the power supply of a radio section 2 of the receiver with battery saving function is connected forcibly continuously to release the battery saving. The mode enters the said mode (115) by depressing the reset switch 11 (114) at the stat of the test mode I (113), a 1sec continuous ring tone is generated twice at an interval of 0.5sec, and when the display device exists, the ''E2-'' display appears on the display device 4. When the test code is received in this mode, a call ring tone is generated and the ring tone is reset automatically for 0.32sec. Thus, in measuring the reception sensitivity of the receiver in this mode, the reception sensitivity is measured simply and also in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to an individual selective call receiver. In particular, it relates to testing means for the receiver.

[Description of prior art]

Conventionally, there have been the following problems in testing this type of receiver.

First of all, in a receiver that performs the 1st GE battery saving operation, it is necessary to stop this operation in some way when adjusting the receiver, and generally the method is to short the circuit electrically. There was one that had this function using a battery cover.

Furthermore, in a receiver that stores call number information in a read only memory (ROM) that stores the call number of the receiver, a method has been adopted in which the ROM is replaced.

In any case, it is necessary to replace the battery cover or the ROM, which poses problems in terms of reliability and ease.

The second problem is that it takes time to determine the receiver characteristics. For example, in the case of a calling code with a 20-second frame and four groups, a receiver whose calling number is inserted into the fourth group will need at least 15 seconds to ring the receiver once, and It takes a lot of time to measure the characteristics, and since all receivers have different calling numbers, it is necessary to change the calling number in the test encoder every time the receiver is changed, which also takes a lot of time. I needed it.

Regarding these problems, l1fi application 1986-1047
67 "Display I 1 Selective Call Receiver" has been improved. With this method, in order to enter the test mode, it is necessary to receive a test code from the test encoder, so it is difficult to operate the test encoder. It was also necessary to operate the receiver glue set switch, which took time.

Furthermore, since the third problem is displayed using a test mode device, there is also the drawback that it is not possible to distinguish between receivers that are not on the display line.

[Purpose of the invention]

An object of the present invention is to provide an individual selective calling receiver which solves the above-mentioned drawbacks and enables a series of tests to be carried out efficiently by entering the test mode only by operating the receiver's reset switch. Our goal is to provide the following.

[Features of the invention]

The present invention includes a radio section that demodulates a calling code and a nast code, a controller section that includes a cPU that takes in the output of the radio section and outputs a control signal to each circuit, and a sound signal generating means. In the individual selective calling receiver, the controller section includes means for generating a first switch signal, a second switch signal, and a third switch signal in response to an external switch, and a means for generating a first switch signal, a second switch signal, and a third switch signal, and means for transitioning said receiver into a collection test mode in response to a signal; and means for transitioning said receiver from a first test mode to a second test mode in response to said second switch signal. means for making it possible to receive at least the calling code sent to the local station among the calling codes sent at a predetermined cycle in response to the third switch signal; The device is characterized by comprising means for continuously supplying power to the radio section in response to a switch signal, and means for intermittently supplying power to the radio section in response to the third switch signal. .

Further, in the present invention, the controller unit is configured to confirm the transition to the first test mode by the first switch signal and the transition from the first test mode to the second test mode by the second switch signal. and means for driving the sound signal generation means for a predetermined period in response to the test code during the second test mode.

[Explanation based on examples]

FIG. 1 is a block diagram showing an embodiment of the present invention.

The components of this device will be explained based on the diagram.

■ is the receiving antenna of the receiver. 2nd floor is the radio department,
This circuit consists of a high frequency circuit, an intermediate frequency circuit, a frequency discrimination circuit, and a waveform shaping circuit, and converts received radio waves into digital signals. 3 is a controller section, which performs synchronization with the received signal, reception of the synchronization signal and selective call signal, generation of ring tone and battery saving timing signal, reception of display information, error correction and display section control, P- ROM (Programmable-Rea)
d 0nIy Memory ) readout control, etc. are performed.

4 is a display unit including a 7-segment liquid crystal display.

5, an amplifier section amplifies the ringing tone signal from the controller section 3 to a level that can be driven by a speaker. 6
For example, in the P-ROM, write information such as the calling number of the receiver and the function designation of the receiver, such as the presence or absence of auto, reset function, presence or absence of hasotori saving function, etc. 1. a. Reference numeral 7 denotes a speaker which is driven by the amplifying section 5 and notifies the user of a call by generating a ringing sound. Reference numeral 8 denotes a power supply control unit, which controls the connection/disconnection of the power to the wireless unit 2 based on the battery saving timing signal from the controller unit 3.
+. 9 is a crystal oscillator and controller part 3
Generates a clock signal to operate the 10 is a battery as a power source for the receiver, and 11 is a recessor L-switch.

Next, the receiving operation of the receiver will be briefly explained. The jl transmitted wave received by the antenna 1 undergoes frequency conversion, amplification, demodulation, and waveform shaping in the radio section 2, and is sent to the controller section 3 as a digital signal.

The controller section 3 performs a ratio between its own calling number written in advance in the P-ROM 6 and the received digital signal to check whether there is a call or not.

If you confirm the call here, check the controller 1~roller unit 3.
For example, a ring tone signal is supplied to the amplifying section 5 and the speaker 7 is driven. If display information is added to the call signal,
The display data is output to the display section 4 and displayed. This display is automatically erased after about 8 seconds under the control of the controller section 3.

Next, the basic configuration and operation of the controller section 3 will be explained with reference to FIG. The controller unit 3 is a one-chip central processing unit (CentralProcess).
ng Unit: CPU). A series of operating instructions for the controller is written in the program memory 301, and instructions for a test mode, which is a feature of the present invention to be described in detail later, are also written in this part.

The contents of the program memory 301 at the address corresponding to the program counter 302 are output to the control section 303, and based on this contents, the control section 303 outputs control signals to each section.

The program counter 302 is incremented by +1 each time the contents of the program memory 301 are sent to the control unit 303, and the program counter 302 is incremented by +1 each time the contents of the program memory 301 are sent to the control unit 303, and the program counter 302 follows this number when there is a jump command or the like. The interface between the external circuit and the data bus 308 is input port a 304 and output port 1 to b 305.
, output port) C306 and input port d307. Further, the data bus 308 is connected to a program counter 302, a data memo, a data memory 309, an accumulator 3JlO, and a logic operation unit (Arithemetic).
c and Logic Unit: ALU)-
It is also connected to 311 and transfers data.

Note that a synchronizing clock necessary for data acquisition is generated by the crystal oscillator 9, the oscillator 313, and the timer 312. The display data in the data memory 309 is supplied to the display section 4 via the display section controller/Dryno X 314 and displayed.

FIG. 3 shows a flowchart of a test mode of receiver operation, which is a feature of the present invention. In the following explanation, each step/knob number in the flowchart is written in parentheses after the operation explanation. Further, in the figure, SC represents a synchronization code, and IDL represents an empty code.

First, the general flow of receiving a call will be briefly explained. When the receiver is powered on (101), it performs a preamble signal detection operation (103), and if the preamble signal is detected here, it moves to a synchronization code detection operation (104).
. Next, when a synchronization code is detected, the receiver waits for two types of call numbers based on its own address, that is, an A call number and a B call signal in the present embodiment.

Here, when the calling number of call A or the calling number of call B is detected, each ringing operation and display information (message) are performed after waiting for the transmission of one group of 2o words to be completed.
If (=J has been added, perform the display operation (
Steps 105-1o8). During the sound and display operations, the receiver detects an empty code and transmission of one group of 20 words (109, 11o), and when detected, returns to the preamble signal standby state. On the other hand, if the own address is not received (1o5.106), an empty code is received and 20 words 1
Upon completion of group transmission, the device enters the first preamble signal standby state.

Next, the flow for setting the receiver in test mode will be explained. If you turn on the power while pressing the button (
101, 102), the timer starts counting (1
11). When this timer times out (112)
, the receiver enters Nast mode ■ (113). However, if the power is turned on with the reset switch pressed, the timer starts counting (111), and if the timer does not time out (112), the receiver enters a preamble signal standby state. That is, it is a normal call reception.

At this time, the timer will be set to 3 to 4 seconds, which will never be used even if the - switch is pressed by mistake, and will not accidentally go into test mode when used in normal calling operation. The Nast mode of the apparatus according to the invention has the following two motes, each of which is used for a series of tests of the receiver.

First, test mode (■) will be explained. The timer starts counting (111), and the timer starts counting (112).
), immediately enter test mode 1・■ (113').

Subsequently, a continuous beep is generated once for 1 second, and an "E1-" display appears on the display 4, if there is a display.

This mote has a hunterism saving function (the power supply of the radio section 2 of the receiver is forcibly connected continuously, and battery saving is canceled. Therefore, it becomes possible to adjust the radio section and measure its characteristics.

Further, detection of a power drop alarm is also performed continuously, and if the voltage is restored after the power supply drop alarm is generated, the voltage drop alarm can be automatically stopped. Therefore, the voltage drop alarm generation voltage can be easily measured.

Next, Nast mode H will be explained. In the Nast mode ■ (113), press the reset switch 11 (114,) to enter this mode (115).
), a continuous beep for one second occurs twice every 0.5 seconds, and if there is a display, an "'E2-" display appears on the display 4. In this mode, a reception operation is performed using a test code. When a test code is received in this mode, a ringing tone is generated, and auto-recent occurs in 0.32 seconds after the ringing tone. Therefore, if the receiving sensitivity of the transmitter is measured in this mode, each ringing takes about 2 seconds, and there is no need to manually reset the receiver, making it possible to measure the receiving sensitivity easily and in a short time.

Furthermore, since the test code is common to all receivers, there is no need to change the calling number of the test encoder for each receiver.

In the test mode (115), the test mode is canceled by pressing the reset 7 l switch (116).

As mentioned above, there are two test modes of the device according to the present invention.
It can be used in the same way in four nast modes such as "Selective Call Receiver with Display".

In addition, in the embodiment device of the present invention, in test mode I, 1
A continuous beep occurs once per second, and in test mode (2), a continuous beep for 1 second occurs twice after the IT hangs for 0.5 seconds, so a test mode is created by the beep. Therefore, receivers other than receivers that classify test modes by display can also classify test modes.

Next, to explain the test code, as mentioned earlier, when you set the receiver you want to test to test mode H, the Nast code is called ``This is a common calling number for this receiver, so it is a normal call number.'' It is no different from a calling number.On the contrary, what differs from a normal 911 call number is that the number is the same for all receivers.

Therefore, the present invention uses 170 DC balanced 1,009,268 (decimal) for over 1 million numbers that are never used in a calling number. In binary representation: 0111LOL100L100IIIO100LOIO
100100 OMSB LSB.

Here, MSB indicates the most significant bit, and LSB indicates the least significant bit.

Next, referring to FIG. 4, a paging signal string sent out from the test encoder used in the apparatus according to the embodiment of the present invention will be described.

In the figure, PS is a preamble signal, sC is a synchronization code, SUB is a subscriber calling number, IDL is an empty signal, and TEST
represents a test coat.

FIG. 4(A) shows a paging signal sequence when performing a paging test on a receiver with a paging number belonging to group G1. The preamble signal PS and the 20-word group G1 code are repeatedly sent out at predetermined intervals. In this case,
Since only G1 is added to the sending group and the length of one frame is "preamble+sc+i group", the calling test can be carried out in a relatively short time.

FIG. 4 CB,) is a calling signal sequence when performing a calling test on a receiver with a calling number belonging to group G4. In this case, the sending groups G1 to 04 are added, and ■
The length of the frame is "preamble + SC + 4 groups", which is quite a long time (approximately 16 seconds).As mentioned earlier, this point was a major drawback of the conventional method.

FIG. 4(C) shows a call signal sequence used for a simple call test in test mode (2). All receivers that have entered the test mode (2) by operating the reset switch can be called once by receiving this code string once, making it possible to measure the sensitivity such as the minimum operating sensitivity in a very short time.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to easily enter the test mode and stop the battery saving operation by simply operating the receiver's 7-note switch.

Furthermore, since a calling test can be performed using the same calling number and the shortest code for measuring receiver characteristics, the measurement time can be significantly shortened.

Furthermore, since the type of test mode can be checked by sound, there is also the advantage that it can be used with receivers other than selective call receivers.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a block diagram of the controller section of FIG. 1. FIG. 3 is a flowchart showing the operation of the embodiment device. - Fig. 4 is a diagram showing the configuration of a ringing signal train. 1...77 antenna, 2...wireless section, 3...controller section, 4...display section, 5...amplification section, 6...P
-ROM, 7... Speaker, 8... Power supply control section, 9
...Crystal resonator, 10...Battery, 11...Reset switch, 301...Program memory, 302...
...Program counter, 303...Control unit, 304
．． 307... Input port, 305.306... Capo-1-1308... Data bus, 3o9... Data memory, 310... Accumulator, 311...
Logic operation section, 312... Timer 313... Oscillation section, 314... Liquid crystal display controller/driver. Patent applicant: NEC Corporation Representative Patent attorney: Naotaka Ide

Claims (1)

[Claims] +11 A wireless unit that demodulates a calling code and a test code, a controller unit including a CPU that receives the output of the wireless unit and outputs a control signal to each circuit, and a sound signal generating means. In the individual selective paging receiver, the controller section includes means for generating a first switch signal, a second switch signal, and a third switch signal in response to an external input, and a means for generating a first switch signal, a second switch signal, and a third switch signal in response to an external input; means for responsively transitioning the receiver to a first test mode; and means responsive to the second switch signal for transitioning the receiver from the first test mode to a second NAST mode; means for enabling reception of at least a calling code sent to the local station among the calling codes sent at predetermined intervals in response to the third switch signal; and means for continuously supplying power to the radio unit using the switch signal, and intermittently supplying power to the radio unit in response to the third switch signal. Machine. (2) When the controller unit confirms the transition to the first test mode by the first switch signal and the transition from the first test mode to the second test mode by the second switch signal, and a means for driving the sound signal generating means for a predetermined period in response to the test code during the second test mode. An individual selective call receiver according to scope (1).