CN201039376Y - A portable radio visual doorbell - Google Patents

A portable radio visual doorbell Download PDF

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Publication number
CN201039376Y
CN201039376Y CNU2007201089751U CN200720108975U CN201039376Y CN 201039376 Y CN201039376 Y CN 201039376Y CN U2007201089751 U CNU2007201089751 U CN U2007201089751U CN 200720108975 U CN200720108975 U CN 200720108975U CN 201039376 Y CN201039376 Y CN 201039376Y
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microprocessor
pin
usbg
flash memory
network card
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CNU2007201089751U
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Chinese (zh)
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何加铭
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NINGBO SUNRUN ELECTRONIC INFORMATION TECHNOLOGY DEVELOPMENT Co Ltd
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NINGBO SUNRUN ELECTRONIC INFORMATION TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

The utility model discloses a portable wireless visual doorbell. An outdoor transmitter comprises a camera, a microphone, a microphone amplification circuit and a first microprocessor. The outdoor transmitter is provided with a call key. An indoor receiver comprises a display, a speaker, a speaker amplification circuit, a second microprocessor and a wireless router. The outdoor transmitter is provided with a first wireless network card which is connected with the first microprocessor. The indoor receiver is provided with a second wireless network card which is connected with the second microprocessor. The signals of the outdoor transmitter and the indoor receiver are mutually transmitted through a wireless router. The manner of adopting the digital signal transmission accords with the trend of household electric appliance numeralization. The digital signal transmits through the wireless router which can increase the effective distance of communication to realize that householders can observe the outdoor information anywhere at indoors through the hand-held indoor receiver.

Description

A kind of portable mobile wireless video doorbell
Technical field
The utility model relates to a kind of video doorbell, especially relates to a kind of portable mobile wireless video doorbell.
Background technology
Existing video doorbell includes outside transmitter and the indoor receiver that lead connects, wherein outside transmitter includes video camera and microphone, indoor receiver includes display device and loud speaker, and video doorbell is grasped outdoor information and provided great convenience with the communication in the external world for the householder understands.But owing to connect with lead between outside transmitter and the indoor receiver, in installation process, need to hole on the wall, and, brought certain inconvenience in case indoor receiver is fixing just can not arbitrarily move.Existing China Patent No. is that the technical problem that the patent of a kind of wireless visible entryphone of 03267589.5 solves is outside transmitter and indoor receiver employing wireless connections, do not need wiring, user oneself can move after just can realizing installing easily and installing within the specific limits.This patent has embodied certain superiority, but also exist some shortcomings, one is because the signal transmission form that this wireless visible entryphone adopts adopts the transmission means of analog signal basically, and the display of display image is relatively heavier and its image is fuzzyyer, and does not have encryption; Its two, transmission range is smaller, and is subjected to the interference of extraneous signal easily, signal transmits less stable.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of indoor receiver and can carry at indoor mobile portable mobile wireless video doorbell, and it adopts digital signal to transmit, and wireless transmission distance is bigger.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of portable mobile wireless video doorbell, comprise outside transmitter and indoor receiver, described outside transmitter comprises camera, microphone and microphone amplifying circuit, first microprocessor, the one a SDRAM memory and a FLASH memory, a described SDRAM memory is connected with described first microprocessor respectively with a described FLASH memory, described camera is connected with described first microprocessor by analog to digital converter, described microphone and microphone amplifying circuit are connected with described first microprocessor by the first encoding and decoding speech circuit, described outside transmitter is provided with call button, described call button is connected with described first microprocessor, described indoor receiver comprises display, loud speaker and loud speaker amplifying circuit and second microprocessor, the 2nd SDRAM memory and the 2nd FLASH memory, described the 2nd SDRAM memory is connected with described second microprocessor respectively with described the 2nd FLASH memory, described display is connected with described second microprocessor, described second microprocessor is connected with described loud speaker and loud speaker amplifying circuit by the second encoding and decoding speech circuit, it also includes wireless router, described outside transmitter is provided with first wireless network card, described first microprocessor is connected with described first wireless network card, described indoor receiver is provided with second wireless network card that is connected with described second microprocessor, described second wireless network card, the signal of described outside transmitter and indoor receiver transmits mutually by wireless router.
The model of described first microprocessor is MC9328MX21CVK, the model of a described SDRAM memory is W98123DH-75, the model of a described FLASH memory is S29GL128N11TF101, be provided with the first wireless network card interface circuit between described first microprocessor and described first wireless network card, pin A1～the A25 of described first microprocessor distinguishes corresponding connection with pin A0～A24 of a described FLASH memory, pin D0～the D15 of described first microprocessor distinguishes corresponding connection with pin D0～D15 of a described FLASH memory, the pin CS0-B of described first microprocessor, OE-B, RESET-OUT-B, the pin CE# of a RW-B and a described FLASH memory, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of described first microprocessor, MA10, MA11, pin A0～the A11 of an A16～A18 and a described SDRAM memory, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of described first microprocessor distinguishes corresponding connection with pin DQ0～DQ31 of a described SDRAM memory, pin DQM0～the DQM3 of described first microprocessor distinguishes corresponding connection, the pin of described first microprocessor with pin DQM0～DQM3 of a described SDRAM memory
Figure Y20072010897500061
The pin of SDCLK, SDCKE0 and a described SDRAM memory CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of described first microprocessor, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the described first encoding and decoding speech circuit, pin USBG-TXDP, the USBG-TXDM of described first microprocessor, USBG-RXDP, USBG-RXDM, USBG-FS,
Figure Y20072010897500063
Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the described first wireless network card interface circuit, VP, RCV,
Figure Y20072010897500064
SUSPEND,
Figure Y20072010897500065
SCL, SDA is corresponding respectively to be connected, the model of described second microprocessor is MC9328MX21CVK, the model of described the 2nd SDRAM memory is W98123DH-75, the model of described the 2nd FLASH memory is S29GL128N11TF101, be provided with the second wireless network card interface circuit between described second microprocessor and described second wireless network card, pin A1～the A25 of described second microprocessor distinguishes corresponding connection with pin A0～A24 of described the 2nd FLASH memory, pin D0～the D15 of described second microprocessor distinguishes corresponding connection with pin D0～D15 of described the 2nd FLASH memory, the pin CSO-B of described second microprocessor, OE-B, RESET-OUT-B, the pin CE# of RW-B and described the 2nd FLASH memory, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of described second microprocessor, MA10, MA11, pin A0～the A11 of A16～A18 and described the 2nd SDRAM memory, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of described second microprocessor distinguishes corresponding connection with pin DQ0～DQ31 of described the 2nd SDRAM memory, pin DQM0～the DQM3 of described second microprocessor distinguishes corresponding connection, the pin of described second microprocessor with pin DQM0～DQM3 of described the 2nd SDRAM memory
Figure Y20072010897500071
The pin of SDCLK, SDCKE0 and described the 2nd SDRAM memory
Figure Y20072010897500072
CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of described second microprocessor, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the described second encoding and decoding speech circuit, pin USBG-TXDP, the USBG-TXDM of described second microprocessor, USBG-RXDP, USBG-RXDM, USBG-FS, Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the described second wireless network card interface circuit, VP, RCV,
Figure Y20072010897500074
SUSPEND,
Figure Y20072010897500075
SCL, SDA be respectively corresponding to connect the mutual corresponding connection of pin MX-B0～MX-B5, MX-G0～MX-G5, MX-R0～MX-R5, MX-DCLK, MX-OE-ACD, MX-VSYNC, MX-HSYNC, MX-CLS, MX-PS, MX-SPL-SPR of pin LD0～LD17, LCSLK, OE, FLM, LP, CLS, PS, SPL-SPR with the display screen interface circuit of described second microprocessor.
Described indoor receiver is provided with open the door key and gate control transceiver module, and the described key that opens the door is connected with described second microprocessor respectively with the gate control transceiver module.
Described indoor receiver is provided with monitor key, and described monitor key is connected with described second microprocessor.
Compared with prior art, advantage of the present utility model is the mode that it adopts digital data transmission, voice signal and vision signal fidelity are good, encryption is strong, with very clear of liquid crystal display image, meet the digitized trend of household appliances, digital signal is transmitted by wireless router, wireless router can increase the coverage of communication, make the householder can observe outdoor information by hand-held indoor receiver Anywhere indoor, owing to adopt wireless router, can online computing, shared resource.
The open the door setting of key and gate control transceiver module, can use the switch of hand-held indoor receiver remote control gate, after the key that opens the door is pressed, second microprocessor sends signal wireless to the gate control transceiver module, the gate control transceiver module sends to the receiver module that links to each other with door lock that is contained on the door with signal, and door lock can open or close.
Indoor set is provided with monitor key, can conveniently monitor outdoor situation.
Description of drawings
Fig. 1 is the circuit block diagram of outside transmitter of the present utility model;
Fig. 2 is the circuit block diagram of indoor receiver of the present utility model;
Fig. 3 is microprocessor and the peripheral circuit structure chart thereof of MC9328MX21CVK for model of the present utility model;
Fig. 4 is FLASH memory and the peripheral circuit structure chart thereof of S29GL128N11TF101 for model of the present utility model;
Fig. 5 is SDRAM memory and the peripheral circuit structure chart thereof of W981232DH-75 for model of the present utility model;
Fig. 6 is wireless network card interface circuit figure of the present utility model;
Fig. 7 is a display screen interface circuit of the present utility model;
Fig. 8 is microphone of the present utility model and microphone amplification circuit diagram;
Fig. 9 is loud speaker of the present utility model and loud speaker amplification circuit diagram;
Figure 10 is an encoding and decoding speech circuit diagram of the present utility model;
Figure 11 is a 3.3V power circuit diagram of the present utility model;
Figure 12 is a 1.7V power circuit diagram of the present utility model;
Figure 13 is power switch circuit figure of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
A kind of portable mobile wireless video doorbell, comprise outside transmitter and indoor receiver, outside transmitter comprises camera 1, microphone and microphone amplifying circuit 2, first microprocessor 3, the one a SDRAM memory 4 and a FLASH memory 5, the one SDRAM memory 4 is connected with first microprocessor 3 respectively with a FLASH memory 5, camera 1 is connected with first microprocessor 3 by analog to digital converter 6, microphone and microphone amplifying circuit 2 are connected with first microprocessor 3 by the first encoding and decoding speech circuit 7, outside transmitter is provided with call button 8, call button 8 is connected with first microprocessor 3, indoor receiver comprises display 9, loud speaker and loud speaker amplifying circuit 10 and second microprocessor 11, the 2nd SDRAM memory 12 and the 2nd FLASH memory 13, the 2nd SDRAM memory 12 is connected with second microprocessor 11 respectively with the 2nd FLASH memory 13, display 9 is connected with second microprocessor 11, second microprocessor 11 is connected with loud speaker and loud speaker amplifying circuit 10 by the second encoding and decoding speech circuit 14, it is characterized in that it also includes wireless router, outside transmitter is provided with first wireless network card 15, first microprocessor 3 is connected with first wireless network card 15, indoor receiver is provided with second wireless network card 16, second wireless network card 16 is connected with second microprocessor 11, and the signal of outside transmitter and indoor receiver transmits mutually by wireless router.The model of first microprocessor 3 is MC9328MX21CVK, the model of the one SDRAM memory 4 is W98123DH-75, the model of the one FLASH memory 5 is S29GL128N11TF101, be provided with the first wireless network card interface circuit 17 between the first microprocessor 3 and first wireless network card 15, pin A1～the A25 of first microprocessor 3 distinguishes corresponding connection with pin A0～A24 of a FLASH memory 5, pin D0～the D15 of first microprocessor 3 distinguishes corresponding connection with pin D0～D15 of a FLASH memory 5, the pin CS0-B of first microprocessor 3, OE-B, RESET-OUT-B, the pin CE# of a RW-B and a FLASH memory 5, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of first microprocessor 3, MA10, MA11, pin A0～the A11 of an A16～A18 and a SDRAM memory 4, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of first microprocessor 3 distinguishes corresponding connection with pin DQ0～DQ31 of a SDRAM memory 4, pin DQM0～the DQM3 of first microprocessor 3 distinguishes corresponding connection, the pin of first microprocessor 3 with pin DQM0～DQM3 of a SDRAM memory 4
Figure Y20072010897500091
The pin of SDCLK, SDCKE0 and a SDRAM memory 4
Figure Y20072010897500092
CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of first microprocessor 3, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the first encoding and decoding speech circuit 7, pin USBG-TXDP, the USBG-TXDM of first microprocessor 3, USBG-RXDP, USBG-RXDM, USBG-FS,
Figure Y20072010897500093
Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the first wireless network card interface circuit 17, VP, RCV,
Figure Y20072010897500094
SUSPEND,
Figure Y20072010897500095
SCL, SDA is corresponding respectively to be connected, the model of second microprocessor 11 is MC9328MX21CVK, the model of the 2nd SDRAM memory 12 is W98123DH-75, the model of the 2nd FLASH memory 13 is S29GL128N11TF101, be provided with the second wireless network card interface circuit between second microprocessor 11 and second wireless network card 16, the second wireless network card interface circuit is identical with the first wireless network card interface circuit, pin A1～the A25 of second microprocessor 11 distinguishes corresponding connection with pin A0～A24 of the 2nd FLASH memory 13, pin D0～the D15 of second microprocessor 11 distinguishes corresponding connection with pin D0～D15 of the 2nd FLASH memory 13, the pin CS0-B of second microprocessor 11, OE-B, RESET-OUT-B, the pin CE# of RW-B and the 2nd FLASH memory 13, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of second microprocessor 11, MA10, MA11, pin A0～the A11 of A16～A18 and the 2nd SDRAM memory 12, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of second microprocessor 11 distinguishes corresponding connection with pin DQ0～DQ31 of the 2nd SDRAM memory 12, pin DQM0～the DQM3 of second microprocessor 11 distinguishes corresponding connection, the pin of second microprocessor 11 with pin DQM0～DQM3 of the 2nd SDRAM memory 12
Figure Y20072010897500101
The pin of SDCLK, SDCKE0 and the 2nd SDRAM memory 12 CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of second microprocessor 11, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the second encoding and decoding speech circuit 14, pin USBG-TXDP, the USBG-TXDM of second microprocessor 11, USBG-RXDP, USBG-RXDM, USBG-FS,
Figure Y20072010897500103
Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the second wireless network card interface circuit, VP, RCV,
Figure Y20072010897500104
SUSPEND,
Figure Y20072010897500105
SCL, SDA are corresponding respectively to be connected, be provided with pin MX-B0～MX-B5, MX-G0～MX-G5, MX-R0～MX-R5, MX-DCLK, MX-OE-ACD, MX-VSYNC, MX-HSYNC, MX-CLS, MX-PS, the MX-SPL-SPR corresponding connection mutually of pin LD0～LD17, LCSLK, OE, FLM, LP, CLS, PS, SPL-SPR with the display screen interface circuit of display screen interface circuit 22, the second microprocessors 11 between second microprocessor 11 and the display screen.
The first encoding and decoding speech circuit 7 is identical with the second encoding and decoding speech circuit 14, and first wireless network card 15 is identical with second wireless network card, 16 models, the WL-1676 type network interface card that can adopt the magnificent modest commerce and trade Co., Ltd in Shanghai to produce.Indoor receiver is provided with open the door key 19 and gate control transceiver module 20, and the key 19 that opens the door is connected with second microprocessor 11 respectively with gate control transceiver module 20.Indoor receiver is provided with monitor key 21, and monitor key 21 is connected with second microprocessor 11.Can be provided with a plurality of wireless routers in different floors indoor, connect with lead between the wireless router, indoor receiver is a hand-hold type, and the user moves freely and can control with indoor receiver easily at different floors thus.Need to use 3.3V power supply 23 and 1.7V power supply 24 in the circuit of the present utility model, when the user goes out for a long time, can close video doorbell, the utility model has been provided with a power switch circuit 25.

Claims (4)

1. portable mobile wireless video doorbell, comprise outside transmitter and indoor receiver, described outside transmitter comprises camera, microphone and microphone amplifying circuit, first microprocessor, the one a SDRAM memory and a FLASH memory, a described SDRAM memory is connected with described first microprocessor respectively with a described FLASH memory, described camera is connected with described first microprocessor by analog to digital converter, described microphone and microphone amplifying circuit are connected with described first microprocessor by the first encoding and decoding speech circuit, described outside transmitter is provided with call button, described call button is connected with described first microprocessor, described indoor receiver comprises display, loud speaker and loud speaker amplifying circuit and second microprocessor, the 2nd SDRAM memory and the 2nd FLASH memory, described the 2nd SDRAM memory is connected with described second microprocessor respectively with described the 2nd FLASH memory, described display is connected with described second microprocessor, described second microprocessor is connected with described loud speaker and loud speaker amplifying circuit by the second encoding and decoding speech circuit, it is characterized in that it also includes wireless router, described outside transmitter is provided with first wireless network card that is connected with first microprocessor, described indoor receiver is provided with second wireless network card that is connected with described second microprocessor, and the signal of described outside transmitter and indoor receiver transmits mutually by wireless router.
2. a kind of portable mobile wireless video doorbell according to claim 1, the model that it is characterized in that described first microprocessor is MC9328MX21CVK, the model of a described SDRAM memory is W98123DH-75, the model of a described FLASH memory is S29GL128N11TF101, be provided with the first wireless network card interface circuit between described first microprocessor and described first wireless network card, pin A1～the A25 of described first microprocessor distinguishes corresponding connection with pin A0～A24 of a described FLASH memory, pin D0～the D15 of described first microprocessor distinguishes corresponding connection with pin D0～D15 of a described FLASH memory, the pin CS0-B of described first microprocessor, OE-B, RESET-OUT-B, the pin CE# of a RW-B and a described FLASH memory, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of described first microprocessor, MA10, MA11, pin A0～the A11 of an A16～A18 and a described SDRAM memory, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of described first microprocessor distinguishes corresponding connection with pin DQ0～DQ31 of a described SDRAM memory, pin DQM0～the DQM3 of described first microprocessor distinguishes corresponding connection, the pin of described first microprocessor with pin DQM0～DQM3 of a described SDRAM memory
Figure Y2007201089750002C1
The pin of SDCLK, SDCKE0 and a described SDRAM memory
Figure Y2007201089750002C2
CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of described first microprocessor, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the described first encoding and decoding speech circuit, pin USBG-TXDP, the USBG-TXDM of described first microprocessor, USBG-RXDP, USBG-RXDM, USBG-FS,
Figure Y2007201089750003C1
Figure Y2007201089750003C2
Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the described first wireless network card interface circuit, VP, RCV, SUSPEND,
Figure Y2007201089750003C4
SCL, SDA is corresponding respectively to be connected, the model of described second microprocessor is MC9328MX21CVK, the model of described the 2nd SDRAM memory is W98123DH-75, the model of described the 2nd FLASH memory is S29GL128N11TF101, be provided with the second wireless network card interface circuit between described second microprocessor and described second wireless network card, pin A1～the A25 of described second microprocessor distinguishes corresponding connection with pin A0～A24 of described the 2nd FLASH memory, pin D0～the D15 of described second microprocessor distinguishes corresponding connection with pin D0～D15 of described the 2nd FLASH memory, the pin CS0-B of described second microprocessor, OE-B, RESET-OUT-B, the pin CE# of RW-B and described the 2nd FLASH memory, OE#, RST#, WE# is corresponding respectively to be connected, pin A2～the A10 of described second microprocessor, MA10, MA11, pin A0～the A11 of A16～A18 and described the 2nd SDRAM memory, BS0, BS1 is corresponding respectively to be connected, pin D0～the D31 of described second microprocessor distinguishes corresponding connection with pin DQ0～DQ31 of described the 2nd SDRAM memory, pin DQM0～the DQM3 of described second microprocessor distinguishes corresponding connection, the pin of described second microprocessor with pin DQM0～DQM3 of described the 2nd SDRAM memory
Figure Y2007201089750003C5
The pin of SDCLK, SDCKE0 and described the 2nd SDRAM memory
Figure Y2007201089750003C6
CLK, CKE are corresponding respectively to be connected, pin CSN, DCLK, DIN, DOUT, BCLK, SYNC, ADPCMSO, ADPCMRI, the RESRT-B corresponding connection respectively of the SD1-CLK of described second microprocessor, SD1-CMD, SD1-D0, SD1-D3, SSI2-CLK, SSI2-FS, SSI2-TXDAT, SSI2-RXDAT, NFIO0 and the described second encoding and decoding speech circuit, pin USBG-TXDP, the USBG-TXDM of described second microprocessor, USBG-RXDP, USBG-RXDM, USBG-FS,
Figure Y2007201089750003C7
Pin DAT-VP, the SE0-VM of USBG-SCL, USBG-SDA and the described second wireless network card interface circuit, VP, RCV,
Figure Y2007201089750003C8
SUSPEND,
Figure Y2007201089750003C9
SCL, SDA are respectively corresponding to be connected, the mutual corresponding connection of pin MX-B0～MX-B5, MX-G0～MX-G5, MX-R0～MX-R5, MX-DCLK, MX-OE-ACD, MX-VSYNC, MX-HSYNC, MX-CLS, MX-PS, MX-SPL-SPR of pin LD0～LD17, the LCSLK of described second microprocessor, OE, FLM, LP, CLS, PS, SPL-SPR and display screen interface circuit.
3. a kind of portable mobile wireless video doorbell according to claim 1, it is characterized in that described indoor receiver is provided with open the door key and gate control transceiver module, the described key that opens the door is connected with described second microprocessor respectively with described gate control transceiver module.
4. a kind of portable mobile wireless video doorbell according to claim 1 is characterized in that described indoor receiver is provided with monitor key, and described monitor key is connected with described second microprocessor.
CNU2007201089751U 2007-04-30 2007-04-30 A portable radio visual doorbell Expired - Fee Related CN201039376Y (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101869729A (en) * 2010-05-29 2010-10-27 韩文冬 Adjustable auxiliary support for infant scalp intravenous infusion
CN102833887A (en) * 2012-08-29 2012-12-19 太仓市同维电子有限公司 3G (third-generation) wireless router
CN103280013A (en) * 2013-06-29 2013-09-04 李良杰 Wireless remote-control visual door lock
CN108600585A (en) * 2018-04-09 2018-09-28 安徽龙运智能科技有限公司 A kind of conveniently intelligent movable doorbell

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101869729A (en) * 2010-05-29 2010-10-27 韩文冬 Adjustable auxiliary support for infant scalp intravenous infusion
CN102833887A (en) * 2012-08-29 2012-12-19 太仓市同维电子有限公司 3G (third-generation) wireless router
CN103280013A (en) * 2013-06-29 2013-09-04 李良杰 Wireless remote-control visual door lock
CN108600585A (en) * 2018-04-09 2018-09-28 安徽龙运智能科技有限公司 A kind of conveniently intelligent movable doorbell

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