JPS6343022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a selective call receiving device that receives and displays selective call signals and message signals sent from a wireless transmitter.

A conventional selective call receiving device of this type is shown in FIGS. 1 and 2. In FIG. 1, 1 is a receiving antenna, 2 is a receiving section, 3 is a detection circuit, 4 is a signal processing circuit, 5 is a number setting circuit that sets a selective call number in advance, and 6 is a sounding circuit that generates a sounding signal. ,7
8 is a processing circuit that processes the display signal; 9 is a display that is driven by the display signal; 10 is a first pushbutton switch for stopping the generation of the sound; 11 is a second push button switch for resetting the processing circuit;
Vc is a voltage source.

In the above device, a wireless transmitter (not shown)
A modulated wave consisting of a selective calling signal and a message signal sent from the antenna 1 is received by an antenna 1, a reception output is obtained by a receiving section 2, and a selective calling signal and a message signal are demodulated by a detector 3. The selective call signal is checked against the selective call number unique to the receiver from the number setting circuit 5, and if the two match, the sound generation circuit 6 is activated to make the speaker 7 sound.
Notify that there is a call. In addition, the sound is
By pressing the pushbutton switch 10, voltage is applied to the sound generating circuit to reset it and stop the sound. On the other hand, the message signal output from the signal processing circuit 4 is processed by the display signal circuit 8 and displayed on the display 9.
will be displayed. The above display is a push button switch 11
By pressing , the display processing circuit 8 is reset and erased.

Furthermore, the conventional selective call receiving device shown in FIG.
The message display storage circuit 12 has the circuit configuration shown in FIG.
A display control circuit 13 consisting of a microcomputer and the like is added. In this device, the display signal processed by the display signal processing circuit 8 causes the display content to be stored in the display storage circuit 12 under the control of the display control circuit 13 and is displayed on the display 9. To reset the content displayed on the display 9, display the stored content on the display 9, or replace the displayed content with the content stored in the message storage circuit 12, use the display control. The display 9 is controlled by pressing a reset switch 11 connected to the circuit 13. Note that the message storage circuit 12 has a capacity to store two or more displays.

Both of the above-mentioned conventional selective call receiving devices require two push switches, one for stopping the sound and the other for resetting the display, and therefore have the following drawbacks.

The operation is complicated and there is a possibility of erroneous operation.

By mounting two switches in this receiving device, there are restrictions on miniaturization of the device.

The use of two switches, which are mechanically moving parts, reduces the reliability of this device.

The present invention provides a selective call receiving device that eliminates the above-mentioned drawbacks, and will be described below along with an embodiment thereof.

In FIG. 3, parts corresponding to those of the device in FIG. 2 are given the same reference numerals. 17 to 21 are AND circuits, 15 and 16 are first and second memory circuits for storing whether or not to display on the display 9 and the type of display content, and 22 to 24 are inverters, respectively.

In this embodiment, by pressing the switch 10, various functions can be switched to multiple functions. These will be explained in order below. The operations of the receiving section and the sounding section are the same as those shown in FIG. 1 above.

(1) Ringing reset during ringing.

If you press switch 10 while the sound is ringing, AND circuit 1
Since both the output of the sound memory circuit 14 and the input via the switch 10 are input to the input of the switch 7, the output of the AND circuit 17 becomes a high level H, thereby resetting the sound memory circuit 14. At the same time, the buzzer 7 stops sounding.

(2) Resetting the display while the display contents are being displayed.

When the switch 10 is pressed while the sound is not being generated, the input via the switch 10 and the output indicating that the sound memory circuit 14 is in an immobile state (low level) are inverted by the inverter 22 to the input of the AND circuit 18. Since the input becomes a high level, the output of the AND circuit 18 becomes a high level, and at this time, if the second memory contents are being displayed on the display 9, the second memory circuit 1
6 is at a high level, the output from the AND circuit 18 is used as the AND circuit 21.
The output becomes high level, and by inputting this to the display control circuit 13, the display 9
You can reset the displayed content.

(3) Recall of display contents.

Similarly, when the switch 10 is pressed while the sound is not being generated, the output of the AND circuit 18 becomes high level as described above. At this time, the display 9 indicates the memory circuit 1.
When the contents of 2 are not displayed, the outputs of the first memory circuit 15 and the second memory circuit are both low level, so these are inverted by the inverters 23 and 24, respectively, and become high level, and the above-mentioned AND By inputting it together with the output high level of the circuit 18, the output (high level) of the AND circuit 19
is input to the display control circuit 13, so
Under this control, the contents stored in the display storage circuit 12 can be retrieved and displayed on the display 9.

(4) Exchange of display contents and memory contents of display unit.

Similarly, when the switch 10 is pressed while the sound is not being generated, the output of the AND circuit 18 becomes high level as described above. Now, the display 9 indicates that the first memory circuit 15
If the content of is being displayed, the first memory circuit 1
Since the output of 5 becomes a high level, the output of the AND circuit 20 becomes a high level due to this and the output of the AND circuit 18, and the output is input to the display control circuit 13 to control it, and depending on the control result. , the contents of the first memory circuit 15 are reset, and the second memory contents stored in the memory circuit 12 are displayed on the display 9. In addition to the embodiment shown in FIG. 3, a single push switch can be used to switch the display when there are three or more stored contents by pressing it multiple times, or to recall and reset the display. It can be easily inferred from the above embodiment that functions such as resetting and recalling a plurality of types of ring tones can be provided.

As explained above, according to the present invention, by combining the above-mentioned various functions, it is possible to not only stop the sound but also switch and control multiple functions such as display reset, recall, and replacement by simply pressing a single push switch. In addition, various drawbacks of using the two push switches described above can be eliminated, and therefore, its industrial value is great.

[Brief explanation of the drawing]

1 and 2 are block diagrams of conventional selective call receiving apparatus, respectively, and FIG. 3 is a block diagram of a selective call receiving apparatus according to an embodiment of the present invention. 2... Receiving section, 3... Detection circuit, 4... Signal processing circuit, 5... Number setting circuit, 6... Sound generation circuit, 7... Speaker, 9... Display, 10... Push button Switch, 12...Message storage circuit, 13...Display control circuit, 14...Sound storage circuit, 15, 16...First and second storage circuits, 17-21...AND gate circuit.

Claims (1)

[Claims] 1. A receiving means that receives and detects and outputs a calling signal and a message signal, a signal processing circuit that collates the calling signal and outputs a sound signal and the message signal when a match is made, and temporarily stores the sound signal. and a sound storage circuit that outputs the sound to the sound generation means; a push button whose one end is connected to a power source; and a first gate circuit whose inputs are the output generated at the other end of the push button and the output of the sound circuit. a second gate circuit which receives the inverted output of the sounding circuit and inputs the output generated at the other end of the push button; and a third gate circuit which receives the output of the second gate circuit, respectively. A fourth gate circuit comprising a gate circuit and a plurality of gate circuits, and is controlled by the outputs of the third gate circuit and the fourth gate circuit, and exchanges the message signal with a display device or a message storage circuit. and a plurality of memory circuits for storing the presence or absence of the message signal; outputs of the plurality of memory circuits are inverted and commonly input to the third gate circuit; A selective call receiving device comprising input means for respectively inputting to gate circuits.