JPS61247134A - Wireless talking equipment - Google Patents

Abstract

PURPOSE:To inform clearly a notice destination of the content of notice by providing the 2nd tone signal oscillation circuit oscillating an urgent notice signal when a control circuit detects that a pushbutton is operated for notice. CONSTITUTION:The pushbutton 22 is formed mechanically by a 2-stage of pushbutton switch structure. The operation of the pushbutton 22 is detected by a control circuit 18 and a signal depending on the normal or the emergent state drives respectively a tone signal oscillation circuit 23 or 24. When the circuit 18 detects that the pushbutton 22 makes an urgent operation, a wireless talking equipment A possible normally for 2-way talking and sending the notice signal is brought into the state for the transmission only. Thus, if a burglar invades, after it is noticed by using the pushbutton 22, the party receiving the notice can listen to the state of the party giving notice and the burglar cannot recognize it.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wireless communication device that can make an emergency call by pressing a call button.

[Background Art] Wireless communication devices have come into widespread use recently because they do not require wiring or construction work and have the advantage of not detracting from their aesthetic appearance. Therefore, it is desirable to be able to use this wireless communication device to make emergency calls from places where valuables such as jewelry are handled, places where cash is handled, and as a means of notifying changes in the physical condition of important persons, elderly people, etc. ing.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to provide a wireless communication device that can be used for emergency reporting.

[Disclosure of the Invention 1 (Embodiment) FIG. 1 is a diagram showing an embodiment of the present invention, and a wireless communication device that performs transmission and reception using one antenna 1 will be described as an example. The reception section of this wireless normal device includes a bandpass filter 7 that passes only signals in a predetermined frequency band necessary for reception among the signals received by the antenna 1, and a high frequency amplification circuit that amplifies the signal that has passed through the bandpass filter 7. 8, a mixer 9 that converts the received signal into an intermediate frequency signal, a bandpass filter 10 that passes only the intermediate frequency signal, a demodulation circuit 11 that detects a modulated signal indicating the transmission content from the intermediate frequency signal, and this demodulated signal. a low-pass filter 12 that removes harmonic components and noise components contained in the noise component; an amplifier circuit 13 that amplifies the output of the low-pass filter 12; and a speaker 21 that is driven by the output of the amplifier circuit 13.
It is made up of. On the other hand, the transmitting section includes a micro to which an audio signal etc. is input, an amplifier circuit 5 which amplifies the input audio signal, a modulation circuit 4 which modulates a carrier wave with the output of the amplifier circuit 5, and transmits the modulated carrier wave to a desired transmission frequency. It is comprised of a frequency multiplier circuit 3 that multiplies the signal by a frequency band, and a bandpass filter 2 that removes signals in a frequency band unnecessary for transmission.

In this embodiment, the PLL circuit 15 is shared as a local oscillation circuit for the transmitting section and the receiving section, and the PLL circuit 15 is used in the receiving section.
The signal is input to the mixer 9 via a frequency multiplier circuit 14 that multiplies the output of the circuit 15. The PLL circuit 15 also uses a crystal oscillator 17 as a reference frequency oscillation circuit, and includes channel setting means 16 for setting the frequency of transmission and reception. Furthermore, in order to save power, the receiver is equipped with a control circuit 18 consisting of a CPU that controls each circuit of the receiving section indicated by a broken line so that it operates intermittently.
The control circuit 18 includes, as peripheral circuits, a low-pass filter 19 that passes an input signal, a call signal, or a notification signal from the output of the demodulation circuit 11 and inputs the signal to the control circuit 18;
The oscillation circuit 20 is driven by the oscillator 8 and oscillates a ringing signal so as to emit a ringing tone from a speaker 21. Since the operation of this embodiment having the above-described circuit configuration is almost the same as that of a normally used transmitting/receiving circuit, a detailed explanation of the operation will be omitted, and the features of this embodiment will be explained.

When the power switch SW is turned on or intermittent reception is started, the control circuit 18 first operates the PLL circuit 15, and after the chattering of the power switch SW has elapsed, operates the circuits of the other receiving sections to enable reception. do. When a signal (for example, a calling signal) is input during this intermittent reception, the output of the demodulation circuit 11 is inputted to the control circuit 18 via the low-pass filter 19 to detect the presence or absence of the calling signal. The oscillation circuit 20 is driven to emit a chime sound from the speaker 21 to notify that there is a call, and at the same time, the power supply to the receiving section is maintained to maintain the operating state of the receiving section, and the transmitting section can also operate in the same way. state. After the end of the call, no input signal is generated at the output of the mixer 9, and when a predetermined period of time has elapsed, the power supply to each circuit of the battery is stopped, thereby saving power.

Further, after the end of the call, the output of the amplifier circuit 5 is detected, and when there is no output for a predetermined period of time or more, the supply of power by the battery is similarly stopped. Furthermore, if a call signal is received at the time of reception and a chime sound is emitted, the call state is established, and a modulation signal is not generated at the output of the amplifier circuit 5 for a predetermined period of time or longer, it is determined that the user did not notice the call, and the oscillation circuit 20 is driven again, a chime sound is sounded from the speaker 21 to notify the user that there is a call again. The above is the communication operation of the wireless communication device. Next, the relationship between the push buttons 22, which is a feature of this embodiment, will be explained.

A push button 22 that is commonly used for calling during normal times and for reporting during emergencies, and which is operated differently in normal times and in emergencies, and the above-mentioned control circuit 18 that detects the operating state of the push button 22;
When the control circuit 18 detects that the push button 22 has been operated to call, a F-on signal oscillation circuit 23 generates a call signal for a telephone call, and the control circuit 18 detects that the push button 22 has been operated to report. It is equipped with a tone signal oscillation circuit 24 that oscillates an emergency notification signal when detected, and notification means that makes different notifications depending on the calling signal and the notification signal sent from the other party. Here, in this embodiment, the control circuit 1
Emergency display means 25 is provided to display the presence of a notification signal when the notification signal is detected at step 8. More details are as follows. For example, the push button 22 is mechanically
The first switch is activated and operates as a call-up switch during normal press operation, and the second switch is activated by strongly pressing the push button 22 in an emergency.
The switch may be driven to operate as a notification, or special operations such as whether the push button 22 is pressed for a longer or shorter time than a predetermined time, or the number of times the push button is pressed may be used to differentiate between normal and emergency situations. The purpose is to use the push button 22 properly depending on the time. The control circuit 18 detects the operation of the push button 22, and drives the tone signal oscillation circuits 23 and 24 to generate signals corresponding to normal times and emergency times. The outputs of the tone signal oscillation circuits 23 and 24 are input to the modulation circuit 4 and modulated together with the audio signal and the like. here,
When the control circuit 18 detects that the push button 22 performs an emergency operation, the control circuit 18 sends a notification signal to the wireless communication device A, which is normally capable of two-way communication, as shown in FIG. 3, as shown in FIG. The wireless communication device A that issued the notification signal is placed in a state where it can only transmit, and the wireless communication device A that received this notification signal is controlled to perform only reception operations. As a result, for example, when a burglar breaks in and a report is made by pressing the push button 22, the party receiving the report can hear the status of the party making the report, but the intruder does not know this. . On the other hand, when a calling signal is received, the control circuit 18 detects the calling signal from the output of the demodulating circuit 11 through the low-pass filter 19, drives the oscillating circuit 20, and emits a normal chime sound from the speaker 21. Further, when an emergency notification signal is detected by the control circuit 18, the oscillation circuit 20 emits a chime sound with a tone different from that when the call signal is received, and an emergency display means 25 consisting of a lamp or the like is emitted. indicates that an emergency condition has occurred. Furthermore, the oscillation circuit 20 may use voice synthesis technology to emit the emergency state as a sound instead of a chime sound. In an emergency, the control circuit 18
stops transmitting and only performs receiving.

[Effect of the Invention J As described above, the present invention is equipped with a push button that is used for both normal calls and emergency notifications, and has different operations in normal times and emergencies. It is possible to make a report using the push button used for emergency calls, so that the person being notified does not notice that the emergency call has been made. A first tone signal oscillation circuit that oscillates a call signal for a call when detected, and a second tone signal oscillation circuit that oscillates an emergency notification signal when the control circuit detects that the push button has operated for notification. and a notification means that makes different notifications depending on the calling signal and the notification signal sent from the other party, so that the content of the notification can be clearly notified to the destination.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIGS. 2 and 3 are diagrams for explaining the operation of the same. A is a wireless communication device, 18 is a control circuit, 22 is a push button, 23 and 24 are tone signal oscillation circuits, and 25 is an emergency display means. Agent Patent Attorney Ishi 1) Ai 7 Figure 1 Figure 3

Claims (1)

[Claims] (1) A push button that is commonly used for calling in normal times and for reporting in emergencies, and has different operations in normal times and in emergencies;
a control circuit that detects the operation state of the push button; a first tone signal oscillation circuit that oscillates a call signal when the control circuit detects that the push button is called; A second tone signal oscillation circuit that oscillates an emergency notification signal when it is detected that the push button has been operated for notification, and notification means that provides different notifications depending on the calling signal and the notification signal sent from the other party. A wireless communication device consisting of