JPH0276422A - Radio selective calling receiver - Google Patents

Abstract

PURPOSE:To improve using procedure by separately constituting a receiver body having a receiving function and a display device part having a display function. CONSTITUTION:The receiver body 17 receives a radio calling signal, stores individual information included in the received signal in an individual information storage part 7 and converts the individual information into a sound or optical signal by a converter 11 to output the signal to the external. On the other hand, the display device part 18 receives the sound or optical signal generated from the body 17, converts the signal into an electric signal by a converter 12 and shapes the waveform of the electric signal by a waveform shaping circuit 13 as a display signal to display prescribed information on a display device 16. Since the receiver body and the display device part are connected through sound or light without connecting them through wires, the display device part can be arranged on a position to be easily observed such as an arm and a bag and its using procedure can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a radio selective call receiver, and more particularly to a technology for configuring a radio selective call receiver with an information display function.

(Prior Art) As is well known, a radio paging system (referred to as a paging system) allows a person who is away from home or away from home to carry a small portable receiver (referred to as a pager) to make a telephone call. It was developed for the purpose of wirelessly announcing a ringing tone equivalent to the ringing of a cellphone's bell, and prompting a response from the nearest telephone. As a result of the ability to transmit characters such as numbers, kana, and alphabets, systems have emerged that provide character information services in addition to simple calls.

That is, the radio selective calling receiver to which the present invention is directed has a function of displaying various information wirelessly transmitted along with a radio paging signal.

(Problems to be Solved by the Invention) By the way, since the conventional radio selective calling receiver with an information display function has an integrated structure with a built-in display, there are various problems as described below.

First, although the receiver is not very inconvenient when carried in a pocket, it is often difficult to see the display when carried while attached to a waist belt, making it inconvenient to use.

Unfortunately, it is imperative that the receiver be miniaturized and portable. However, since the size and shape of the display device must be a certain size determined by the number and size of displayed characters, the size of the receiver with an integrated structure depends on the size of the display device. It is difficult to miniaturize the receiver. This problem is particularly important in recent years, as information displays have become more multi-character.

Furthermore, although information display is performed by digital signal processing, noise generated from clock signals and the like may interfere with radio circuits and deteriorate the receiving sensitivity, which is the lifeblood of a receiver.

The present invention was made in view of such conventional problems, and its purpose is to separate the receiving function part (receiver body) and the display function part (display unit), thereby improving convenience. It is an object of the present invention to provide a radio selective calling receiver that can improve the number of calls.

(Means for Solving the Problems) In order to achieve the above object, the radio selective call receiver of the present invention has the following configuration.

That is, the radio selective calling receiver of the present invention includes a receiver main body and a display unit separate from the receiver main body; the receiver main body stores individual information included in a radio paging signal. a storage unit; an encoder that reads individual information from the individual information storage unit and converts it into a predetermined signal format; and an electric-sound encoder that generates a sound signal or an optical signal in response to a drive signal and outputs it to the outside. an optical converter; and a converter drive circuit that receives the output of the encoder and outputs the drive signal to the electro-acoustic-optical converter, and
The display unit includes an audio/optical-electrical converter that receives the audio signal or optical signal emitted by the receiver body and converts it into an electrical signal; and performs waveform shaping processing on the output signal of the audio/optical-electrical converter. a waveform shaping circuit that performs; a decoder that converts the output signal of the waveform shaping circuit into a display signal; a display that displays the individual information; a display drive circuit that drives the display based on the display signal; It is characterized by having the following.

(Function) Next, the function of the radio selective calling receiver of the present invention configured as described above will be explained.

The receiver body receives the radio paging signal, stores the individual information contained therein, converts the individual information into a sound or light signal, and outputs the signal to the outside. On the other hand, the display unit receives sound signals and optical signals emitted by the receiver body, converts them into electrical signals, forms display signals therefrom, and displays predetermined information on the display.

Since the receiver body and the display unit are connected through sound and light rather than a wired connection, the display unit can be placed anywhere that is easily visible, such as on your arm or in your bag. This improves usability.

- Also, the receiver main body has a signal sending circuit to the display unit.
Since it can be converted into C, it will not be larger than a receiver for just radio calling, and it can be made as large as truly necessary. On the other hand, the display unit can be provided with a display of any size and shape as required, and can flexibly respond to the trend toward multi-character use.

In this respect, the user can select and use the necessary one from among many types of display units, and also can use a plurality of display units, making it possible to meet the various demands of the users. Furthermore, since the noise generated in the display unit does not have an adverse effect on the receiver main body, the receiver main body can always maintain the best reception sensitivity. In addition, since the display unit is separate and independent and is not placed in the same place as the receiver body, its design can be freely set and it is easy to match the user's preferences. becomes.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a wireless selective ejection receiver (
(hereinafter simply referred to as "pager").

As shown in FIG. 1, the pager according to the present invention consists of a receiver body 17 and a separate display unit 18.

As is well known, in the paging system, the signal format of the radio paging signal to each pager is standardized as the POC8AG code, and as shown in FIG. and an individual information signal 22.

The radio unit 2 of the receiver body 17 performs an intermittent reception operation in which power is intermittently supplied in order to reduce power consumption. The radio paging signal is received by antenna 1 within the receiving operation period.
When input to the radio section 2 via the preamble signal 19, the radio section 2 detects the preamble signal 19, switches from intermittent reception operation to continuous reception operation, establishes reception synchronization with the subsequent synchronization signal 20, and receives the individual selection signal 21 and individual The information signal 22 is received and demodulated, shaped into a digital signal, and passed to the control section 3.

The control unit 3 checks whether the contents of the individual selection signal 21 (calling number) and the self-identification number read from the individual number storage unit 4 match, and if they match, the sound is generated via the sounding element drive circuit 5. While generating a ring tone from the body 6, the contents of the individual information signal 22 (individual display information) are stored in the individual information storage unit 7.
write to.

The switch 9 is operated by the owner of the pager upon hearing the ringing tone. When the switch 9 is operated, the encoder 8 reads the individual information from the individual information storage section 7,
It converts it into a serial signal in a fixed format and sends it to the converter drive circuit 10. As a result, converter drive circuit 1
0 drives the transducer 11 and causes the transducer 11 to generate an optical signal or an audio signal.

The following description will be made with reference to detailed circuit diagrams (FIGS. 3 and 5). FIG. 3 shows the configuration after the encoder 8 when the converter 11 generates an optical signal, and FIG. 5 shows the configuration after the encoder 8 when the converter 11 generates a sound signal.

First, the display method using optical signals is as follows.

In FIGS. 3 and 4, the output signal A of the encoder 8 is, for example, a digital signal of "1" and "0" as shown in FIG.
applied to the base of transistor 23 as zero. This causes the transistor 23 to turn on and off. A series circuit of a light emitting diode 24, a resistor 25, and a battery 26, which constitute the converter 11, is provided between the collector and emitter of the transistor 23, and as the transistor 23 turns on and off, the driving current of the light emitting diode 24 is intermittent and blinks. The light works. As a result, the interrupted optical signal 27 is output to the outside.

The display unit 18 has various forms, and if it is small, it can be worn on the wrist in the same way as a wristwatch. The light receiving surface of the phototransistor 29 serving as the device 12 is made to hit the light receiving surface. As a result, phototransistor 2
9 performs on/off operation according to the brightness of the optical signal 27, and the fourth
The output signal with the waveform shown in Figure (B) is sent to the waveform shaping circuit 13.
sent to.

The waveform shaping circuit 13 consists of an amplifier 30, a filter 31, and a Schmitt circuit 32, and the output signal of the phototransistor 29 is amplified and filtered to become a signal C (FIG. 4(C)).
The Schmitt circuit 32 converts the signal into a rectangular wave signal D (FIG. 4(D)) and inputs it to the decoder 14.

The decoder 14 takes the logical sum of the output signal of the waveform shaping circuit 13 and the clock signal E (FIG. 4 (E)) and converts it into a signal F (FIG. 4 (F)) with a fixed time interval. , which undergoes predetermined signal processing and is output to the display drive unit 15.

The display 16 includes a liquid crystal display (LCD), CRT, plasma display, etc., and displays predetermined information under the control of the display driver 15.

Note that the optical signal 27 may be infrared rays, but visible light may be used to confirm the presence of the optical signal.

Next, the display method using sound signals is as follows.

In FIGS. 5 and 6, the converter drive circuit 10 is
The output A of the encoder 8 (FIG. 6(A)) is connected to the AND gate 35, and the audible frequency band (300 to 20
．． 00011z) or a continuous signal G (FIG. 6(G)) of a predetermined frequency in the ultrasonic frequency band and supplies it to the other input of the AND gate 35; 6(H)) to generate a sound signal 39 consisting of intermittent sound from a speaker 38 serving as a converter 11.

Incidentally, when the sound signal 39 is an ultrasonic wave, there is an advantage that the sound signal 39 is not noticed by others. In addition, in this method, the receiver body 1
7 has the advantage of not having to take it out of your pocket or bag.

Although the display unit 18 is placed at an arbitrary location, the sound signal 3
9 is collected by a microphone 40 serving as a converter 12, and an electrical signal I ((■) in FIG. 6) is output to a waveform shaping circuit 13.

In the waveform shaping circuit 13, the electric signal I is amplified and filtered by an amplifier 41 and a filter 42 to become a signal K (FIG. 6 (K)), which is averaged by an integrating circuit 43 to become a signal
6(L)), which is further converted into a rectangular wave signal M (FIG. 6(M)) by the Schmitt circuit 44 and input to the decoder 14.

The decoder 14 takes the logical sum of the output signal M of the waveform shaping circuit 13 and the clock signal N ((N) in FIG. 6) and converts it into a signal O ((0) in FIG. 6) having a fixed time interval. , which undergoes predetermined signal processing and is output to the display drive circuit 15.

As a result, predetermined information is displayed on the display 16.

(Effects of the Invention) As detailed above, according to the wireless selective calling receiver of the present invention, the receiver main body and the display unit are connected not through wired connection but through sound and light. The display unit can be placed anywhere that is easily visible, such as on your arm or in your bag, improving usability. Furthermore, since the signal sending circuit to the display unit of the receiver body can be integrated into an IC, the receiver body does not become larger than a receiver that only uses radio calling, and can be made as large as truly necessary. On the other hand, the display unit can be provided with a display of any size and shape as required, and can flexibly respond to the trend of multi-character use. In this respect, the user can select and use the necessary one from among many types of display units, and also can use a plurality of display units, making it possible to meet the various demands of the users. Furthermore, since the noise generated in the display unit does not have an adverse effect on the receiver main body, the receiver main body can always maintain the best reception sensitivity. In addition, since the display unit is separate and independent and is not placed in the same place as the receiver body, its design can be freely set and it is easy to match the user's preferences. There are effects such as.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a radio selective calling receiver according to the present invention, FIG. 2 is a signal format diagram of a radio paging signal, FIG. 3 is a block diagram of the configuration of a display system using optical signals, and FIG. 3
FIG. 5 is a block diagram of the configuration in the case of a display method using sound signals, and FIG. 6 is an operation waveform diagram of each part in FIG. 5. 1...Antenna, 2...Radio section,
3...Control unit, 4...Individual number storage unit, 5...Sounding element drive circuit, 6...
・Sounding body, 7゛...Individual information storage section, 8・
...Encoder, 9...Switch, 1
0...Converter drive circuit, 11...Converter, 12...Converter, 13...Waveform shaping circuit, 14...Decoder , 15...
...Indicator drive unit, 16...Display device, 17.
...Receiver body, 18...Display unit, 19...Preamble signal, 20...
...Synchronization signal, 21...Individual selection signal, 22
...Individual information signal, 23...Transistor, 24...Light emitting diode, 25...
...Resistance, 26...Battery, 27...
...Optical signal, 28...Load resistance, 29...
...Phototransistor, 30...Amplifier, 31...Filter, 32...Schmitt circuit, 35...And gate, 36
...Sound generation circuit, 37 ...Amplification circuit, 38 ...Speech power, 39 ...Sound signal, 40 ...Mike, 41 ......Amplifier, 42...Filter, 43...
Integral circuit, 44... Schmitt circuit. Agent: Patent Attorney Yoshihiro Hachiman1) Tadashi

Claims (1)

[Claims] It consists of a receiver main body and a display unit separate from the receiver main body; the receiver main body has an individual information storage unit that stores individual information included in a radio paging signal; and an individual information storage unit that stores individual information included in the radio paging signal; an encoder that reads out the signal and converts it into a predetermined signal format; an electric-sound-optical converter that generates an audio signal or an optical signal in response to the drive signal and outputs it to the outside; a converter drive circuit that outputs the drive signal to the electricity-sound-light converter; and a display unit receives the sound signal or light signal emitted by the receiver body and converts it into an electrical signal. a waveform shaping circuit that performs waveform shaping processing on the output signal of the sound/light-electrical converter; a decoder that converts the output signal of the waveform shaping circuit into a display signal; A radio selective calling receiver comprising: a display that displays individual information; and a display drive circuit that drives the display based on the display signal.