CN2466853Y - Multipurpose video telephone - Google Patents

Abstract

The utility model relates to a multipurpose video telephone which comprises a video telephone main circuit, a telephone circuit, a pick-up head, a display screen and a visual door bell circuit, wherein the telephone circuit, the pick-up head, the display screen and the visual door bell circuit are connected with the video telephone main circuit. The video telephone main circuit comprises a central controlling circuit, an audio frequency processing circuit, a modem, a video processing circuit, an audio input switching circuit, a door bell message leaving testing circuit and an alarm input-output interface circuit, wherein the audio frequency processing circuit, the modem, the video processing circuit, the audio input switching circuit, the door bell message leaving testing circuit and the alarm input-output interface circuit are respectively connected with the central controlling circuit. The door bell circuit is connected with the video processing circuit. The audio input switching circuit is respectively connected with the pick-up head, the door bell circuit, the audio frequency processing circuit and an audio frequency coupling circuit of the telephone circuit. The door bell message leaving testing circuit is connected with the audio input switching circuit. The telephone has multiple purposes.

Description

The multipurpose video telephone set

The utility model relates to a kind of communication terminal device, particularly a kind of multipurpose video telephone set; Its image, sound and data are transmission medium with existing ordinary telephone line, also have anti-theft alarm function and visible door bell device.

At present, along with science and technology development, video telephone set is used more widely gradually, but the function of existing video telephone set limits to very much, for example only is with recording, message, phone directory, caller ID demonstration etc.Although this video telephone set can provide the user some reference and storage information, can not satisfy the usefulness of family's monitoring, burglar alarm, and solely house type specialty family monitoring, enforcement is inconvenient, also needs comprehensive wiring, and increase equipment, cost are also higher.

The purpose of this utility model is to provide a kind of multipurpose video telephone set with anti-theft alarm function, but its able to alarm, automatically dial has the video doorbell that automatic message is controlled, and can capture automatically, live recording, but and Remote output and local monitor.

For achieving the above object, the utility model is taked following technical measures:

Multipurpose video telephone set of the present utility model comprises: the camera of video telephone main circuit and the telephone circuit that is connected with the video telephone main circuit, keyboard portion, local camera, LCDs, band pick-up;

Telephone circuit comprises transformer audio frequency coupling circuit, call voice circuit, phone simulation circuit for answering and the signal switching circuit that connects successively.

The video telephone main circuit comprises central control circuit and the audio frequency processing circuit that is connected with central control circuit respectively, modulator-demodulator, memory, video processing circuits and a circuit commutation circuit that is connected with modulator-demodulator;

Also comprise a video doorbell circuit;

Also comprise audio frequency inputting switching circuit, doorbell message testing circuit, warning input/output interface circuit in the video telephone main circuit;

The video doorbell circuit connects video processing circuits and a doorbell camera respectively;

Audio frequency inputting switching circuit connect respectively telephone circuit transformer audio frequency coupling circuit, the band pick-up camera, video doorbell circuit and video telephone main circuit in audio frequency processing circuit, central control circuit;

Doorbell message testing circuit connects audio frequency inputting switching circuit and central control circuit respectively;

The warning input/output interface circuit connects central control circuit.

Wherein, described audio frequency inputting switching circuit can comprise an electronic switch, and it is one two four and selects one to switch electronic switch; The input of electronic switch connects camera, the video doorbell circuit of described transformer audio frequency coupling circuit, band pick-up respectively; Above-mentioned four road audio frequency audio signals are input to the signal input part that switches electronic switch, select input and output and are connected into Dan Sixuan one two four; The output of electronic switch is capacitively coupled to described audio frequency processing circuit through one, and audio frequency processing circuit outputs to a reference source voltage 2.5V respectively the output audio passage and the doorbell message testing circuit of electronic switch through operational amplifier; Central control circuit connects electronic switch.

Wherein, described doorbell message testing circuit comprises operational amplifier, comparator and switching tube; The doorbell speech signal is via the signal input part of described frequency switch circuit concatenation operation amplifier, the output of amplifier connects comparator formation signal and penetrates with the negative terminal to comparator, the anode of comparator connects the operational amplifier of audio frequency processing circuit through a resistance, so that 2.5V to be provided reference voltage, the output of comparator is connected to the base stage of switching tube through a resistance, the charge-discharge circuit that control is made of resistance, electric capacity and switching tube; The collector electrode of switching tube is connected to central control circuit.

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present utility model.

The accompanying drawing simple declaration:

Fig. 1: the circuit block diagram of the utility model multipurpose video telephone set embodiment;

Fig. 2: the circuit diagram of the frequency switch circuit among the utility model embodiment;

Fig. 3 A: the circuit diagram of the video doorbell interface circuit among the utility model embodiment;

Fig. 3 B: the circuit diagram of the doorbell message testing circuit among the utility model embodiment.

As shown in Figure 1, embodiment of the present utility model mainly comprises: telephone circuit 1, video telephone main circuit 2, camera 7,8, doorbell circuit 9 and the casing etc. of keyboard portion 3, local camera 4, LCDs 5, receiver, loudspeaker, microphone 6, band pick-up; Camera 7,8, the doorbell circuit 9 of telephone circuit 1, keyboard portion 3, local camera 4, LCDs 5 band pick-ups connect video telephone main circuit 2 respectively, and receiver, loudspeaker, microphone 6 connect telephone circuit 1.Keyboard portion 3 comprises keyboard indicator light, caller ID display circuit and signal tone testing circuit.

Telephone circuit 1 comprises transformer audio frequency coupling circuit 14, call voice circuit 11, phone simulation circuit for answering 12 and the signal switching circuit 13 that connects successively.

Video telephone main circuit 2 comprises central control circuit 24 and the audio frequency processing circuit 21 that is connected with central control circuit 24 respectively, modulator-demodulator 22, memory 25,26, video processing circuits 27, audio frequency inputting switching circuit 20, doorbell message testing circuit 28, warning input/output interface circuit 29, also comprises a circuit commutation circuit 23 that is connected with modulator-demodulator 22.

Principal character of the present utility model is to set up video doorbell circuit 9, audio frequency inputting switching circuit 20, doorbell message testing circuit 28, warning input/output interface circuit 29.

As shown in Figure 1, the input of warning input/output interface circuit 29 connects an alarm sensor, be used for setting reporting to the police to dial automatically and be the user designated telephone, in case report to the police, the phone simulation circuit for answering 12 that central control circuit 24 is promptly controlled in the telephone circuit 1 enters off hook state.Audio frequency processing circuit 21 is according to predefined telephone number, send corresponding touch-tone signal (DTMF), this signal is through audio frequency inputting switching circuit 20, transformer audio frequency coupling circuit 14, call voice circuit 11 is delivered to telephone wire, after the signal tone testing circuit of keyboard portion 3 detects the other side's off hook signal, play the corresponding alarm sound that stores in advance, in the prompting user family which kind of alert to take place, simultaneously, video processor circuit 27 can carry out respective image and capture, audio frequency processing circuit 21 also carries out live recording, and these important informations will be as the usefulness of later reference.Output interface is connected to corresponding electrical equipment control, can carry out remote controlled by long-distance telephone.

As shown in Figure 2, it is the circuit diagram of the frequency switch circuit among the utility model embodiment, and frequency switch circuit 20 comprises an electronic switch 200, and it is one two four and selects one to switch electronic switch; The input of electronic switch 200 connects camera 7,8, the video doorbell circuit 9 of transformer audio frequency coupling circuit 14, band pick-up respectively; Above-mentioned four road audio frequency audio signals are input to the signal input part that switches electronic switch, select input and output and are connected into Dan Sixuan one two four; The output of electronic switch 200 is coupled to audio frequency processing circuit 21 through an electric capacity 201, and audio frequency processing circuit 21 outputs to a reference source voltage 2.5V respectively the output audio passage and the doorbell message testing circuit 28 of electronic switch 200 through operational amplifier 213,214; Central control circuit 24 connects electronic switch 200.

Its course of work is: central control circuit 24 control electronic switches 200, four tunnel audio signals selectively can be switched to audio frequency processing circuit 21 and handle, and finish recording, message and corresponding snoop procedure.

The characteristics of present embodiment are: electronic switch 200 input and output also are connected into Dan Sixuan one, reduced the intrinsic conducting resistance of electronic switch, for guaranteeing the sound effect of high-quality, on the voice-grade channel, also stable operating voltage must be arranged, in order additionally not increase a reference source, penetrate with the two independent reference voltage is provided by operational amplifier 213,214, solve phase mutual interference and sound sudden change problem on the sound channel.Control the frequency switch circuit that electronic switches 200 are constituted by central control circuit 24.It act as: 1. all audio signals are coupled after electronic switch 200 switches output through transformer audio frequency coupling circuit 14 on the phone plate, enter audio frequency processing circuit 21 through electric capacity 201 and handle.Can realize both sides' calling record, the message under the automatic-answering back device.2. the camera 7,8 that has pick-up, the audio signal of being picked up can be switched electronic switch 200 through audio frequency and switch and enter audio frequency processing circuit 21 and handle, and can realize two control points are monitored or recorded; 3. the audio signal of video doorbell circuit 9 can realize video doorbell calling record, message and outdoor monitoring after electronic switch 200 switchings enter audio frequency processing circuit 21 processing.4. video processing circuits 27 carries four road video input-switching circuits, increase video interface, cooperate four road audio frequency to switch electronic switch 200, can realize the monitoring function of four road images, sound, when entering under the visual state, then can realize monitoring function to remote videophone four road images, sound.

Shown in Fig. 3 A, 3B, the circuit connection schematic diagram of video doorbell circuit 9 in its expression present embodiment; As shown in Figure 3A, video doorbell circuit 9 connects outdoor camera 90, microphone, loudspeaker 91, doorbell button 92, the video processing circuits 27 that enters video telephone main circuit 2 from the doorbell vision signal of camera 90.Doorbell power supply+12V is controlled by video telephone main circuit 2, and power supply ground (GND) is connected with video telephone main circuit 2, is connected with call voice circuit 11 from the doorbell audio signal of doorbell button 92, and another road then is connected to central control circuit 24; The course of work is: doorbell is in non-power supply state at ordinary times, when outdoor there is a ring at the door button 92, then central control circuit 24 detects the low level pulse signal, controlling doorbell power supply+12V immediately opens, " ding-dong " chip is sounded because of button, this moment, telephone circuit 1 was in the hands-free state of simulation off-hook, so loudspeaker send " ding-dong " sound, the prompting user has the people visiting, and the video processing circuits 27 of video telephone main circuit 2 is switched simultaneously, the outer image of show gate immediately on the LCDs, also prompting " off-hook conversation " etc. on the screen, in addition, video telephone main circuit 2 provides the electric controlled door interface, if user installation electric controlled door, but also button opens the door automatically.Video doorbell can not only make both sides converse but also can record.Nobody also can point out and please leave a message in the family.

Shown in Fig. 3 B, it is the circuit diagram of the doorbell message testing circuit among the utility model embodiment, and doorbell message testing circuit 28 comprises operational amplifier 281, comparator 282 and switching tube 283; The doorbell speech signal is via the signal input part of frequency switch circuit 20 concatenation operation amplifiers 281, the output of amplifier 281 connects comparator 282 formation signals and penetrates with the negative terminal to comparator 282, the anode of comparator 282 connects the operational amplifier 214 of audio frequency processing circuit through a resistance, so that 2.5V to be provided reference voltage, the output of comparator 282 is connected to the base stage of switching tube 283 through a resistance, the charge-discharge circuit that control is made of resistance 284, electric capacity 285 and switching tube 283; The collector electrode of switching tube 283 is connected to central control circuit 24, and whether the pressure drop of electric capacity 285 provides the programmable logic array detection message in the central control circuit 24 to finish.

Its process is: when not leaving a message, through operational amplifier 281 to penetrate with signal electronic switch 200 voltages be reference voltage 2.5V, and operational amplifier 214 also is reference voltage 2.5V, so negative terminal voltage height of comparator 282, comparator 282 is output as low level, switching tube 283 is in closed condition, and electric capacity 285 is in high-voltage state; As when message and since the negative terminal voltage of comparator 282 with the variation meeting of voice signal less than anode, so comparator 282 can be exported high level moment during the message, and 283 conductings of driving switch pipe, electric capacity 285 discharges over the ground, remains low-voltage, and central control circuit 24 detects and is low level, prompt for message state, when the open air no longer includes message, comparator 282 non-output signals then, triode 283 disconnects, utilize positive source (Vcc), through 285 chargings of 284 pairs of electric capacity of resistance.When the 1.8V high level lowest detection voltage that reaches central control circuit 24, to charge a T of need second, this time (T second) then can be used as the time that has or not message of judging.Realize message control automatically.When outdoor T does not also have then message end of audio signal input after second.

At the video doorbell circuit of Fig. 3, its characteristics are: the six line systems that 1. substitute the conventional visualization doorbell with simple and direct four-wire system; 2. substitute traditional black and white image picture tube with the coloured image liquid crystal display and show that (color picture tube is expensive) can reduce cost; 3. distinctive doorbell calling record, message have the doorbell automatic controlled function of leaving a message; 4. message control adopts the good a reference source voltage division signal of voltage stabilizing to compare with a reference source sound superposed signal automatically, makes the testing circuit good stability, and is highly sensitive.

The integrated circuit that is adopted in the present embodiment is described as follows, and among Fig. 2, it is the integrated circuit of 74HC4052 that electronic switch 200 adopts model; It is the integrated circuit of LM324 that operational amplifier 281 among operational amplifier 213,214 and Fig. 3 B, comparator 282 adopt model; It is the triode of NPN0805 that switching tube 283 among Fig. 3 adopts model; It is that LM386,4558D constitute doorbell language circuit chip that doorbell language circuit in the video doorbell circuit 9 adopts model.

Compared with prior art, the utlity model has following effect:

1, have this locality and remote monitoring function:

Utilize frequency switch circuit to cooperate video switch, can accomplish four control points image, This locality of sound, remote monitoring function, the two-way that utilizes amplifier to penetrate to produce with circuit independently A reference source is used for sound channel, has avoided the phase mutual interference of sound channel, the sudden change of sound Effect, the quality of can improve recording, leaving a message;

2, the effect that has the high-quality video doorbell:

Adopt four line connected modes, utilize videophone LCD/color image, not only can Carry out the doorbell conversation, but also can record and the doorbell message, set up the doorbell automatic safety The control of speech circuit makes the doorbell message intelligent, and this function can under any duty Cross-reference.

3, have the home security warning function:

Be provided with remote alarm interface, can external all kinds of alarm probe, alert occurs and immediately dial 110 Or subscriber phone, alert in the voice suggestion man carries out video capture simultaneously, live recording, For important clue is provided in the future;

4, utilize telephone remote output, can be to the long-range unmanned automatic control switch of household electrical appliance:

Videophone is provided with multichannel level output interface, when being connected to air-conditioning or electric heater power supply During control end, before the user went home, available plain old telephone or mobile phone carried out telephone remote Output control, after getting home, desirable room temperature, the water temperature of just taking a shower allows you feel invariably Be subjected to family's warmth that high-tech brings to you.

Claims (7)

1, a kind of multipurpose video telephone set comprises: the camera (7,8) of video telephone main circuit (2) and the telephone circuit (1) that is connected with video telephone main circuit (2), keyboard portion (3), local camera (4), LCDs (5), band pick-up;

Telephone circuit (1) comprises transformer audio frequency coupling circuit (14), call voice circuit (11), phone simulation circuit for answering (12) and the signal switching circuit (13) that connects successively.

Video telephone main circuit (2) comprises central control circuit (24) and the audio frequency processing circuit (21) that is connected with central control circuit (24) respectively, modulator-demodulator (22), memory (25,26), video processing circuits (27), and a circuit commutation circuit (23) that is connected with modulator-demodulator (22);

It is characterized in that: also comprise a video doorbell circuit (9);

Also comprise audio frequency inputting switching circuit (20), doorbell message testing circuit (28), warning input/output interface circuit (29) in the video telephone main circuit (2);

Video doorbell circuit (9) connects a video processing circuits (27) and a doorbell camera (90) respectively;

Audio frequency inputting switching circuit (20) connect respectively telephone circuit (1) transformer audio frequency coupling circuit (14), the band pick-up camera (7,8), video doorbell circuit (9) and video telephone main circuit (2) in audio frequency processing circuit (21), central control circuit (24);

Doorbell message testing circuit (28) connects audio frequency inputting switching circuit (20) and central control circuit (24) respectively;

Warning input/output interface circuit (29) connects central control circuit (24).

2, video telephone set according to claim 1 is characterized in that, described audio frequency inputting switching circuit (20) comprises an electronic switch (200), and it is one two four and selects one to switch electronic switch; The input of electronic switch (200) connects camera (7,8), the video doorbell circuit (9) of described transformer audio frequency coupling circuit (14), band pick-up respectively; Above-mentioned four road audio frequency audio signals are input to the signal input part that switches electronic switch, select input and output and are connected into Dan Sixuan one two four; The output of electronic switch (200) is coupled to described audio frequency processing circuit (21) through an electric capacity (201), and audio frequency processing circuit (21) amplifies output audio passage and the doorbell message testing circuit (28) that (213,214) output to a reference source voltage 2.5V respectively electronic switch (200) through computing; Central control circuit (24) connects electronic switch (200).

3, video telephone set according to claim 1 is characterized in that, described doorbell message testing circuit (28) comprises operational amplifier (281), comparator (282) and switching tube (283); The doorbell speech signal is via the signal input part of described frequency switch circuit (20) concatenation operation amplifier (281), the output of amplifier (281) connects comparator (282) formation signal and penetrates with the negative terminal to comparator (282), the anode of comparator (282) connects the operational amplifier (214) of audio frequency processing circuit through a resistance, so that 2.5V to be provided reference voltage, the output of comparator (282) is connected to the base stage of switching tube (283) through a resistance, the charge-discharge circuit that control is made of resistance (284), electric capacity (285) and switching tube (283); The collector electrode of switching tube (283) is connected to central control circuit (24).

4, video telephone set according to claim 2 is characterized in that, it is the integrated circuit of 74HC4052 that described electronic switch (200) adopts model.

According to claim 2 or 3 described video telephone sets, it is characterized in that 5, it is the integrated circuit of LM324 that described operational amplifier (213,214) and operational amplifier (281), comparator (282) adopt model.

6, video telephone set according to claim 1 is characterized in that, it is the triode of NPN0805 that described switching tube (283) adopts model.

7, video telephone set according to claim 1 is characterized in that, the doorbell language circuit chip that the doorbell language circuit in the described video doorbell circuit (9) adopts model to be made of LM386,4558D.

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