TWI450588B - Plug and play network digital image display and video surveillance system - Google Patents

Description

Plug and play network digital image display and image monitoring system

The present invention relates to a network digital image display and image monitoring system, in particular to a network that has an existing power outlet and power line in a home or office without the need to deploy an additional Ethernet signal line. The camera can be connected to a network digital display to enable plug-and-play image monitoring and recording on the power outlet.

According to the introduction, as early as 1980, many companies have started research and development of powerline communication (hereinafter referred to as PLC). In the early days, they used to remotely control household lighting, water, electricity and security equipment, and conducted voice communication. System equipment can be divided into two types: access PLC and indoor (In-house) PLC according to the way it connects to the backbone network. The access PLC refers to the home network and connects to the backbone. The outdoor network of the network uses PLC technology; while the indoor PLC refers to the PLC network technology only for the home network, and the outdoor network connected to the backbone network uses other network technologies, such as ADSL, etc. The system type is different from the network bandwidth. The narrow frequency is suitable for the control of automatic home appliances and instruments. It has been developed for 10 to 20 years. Broadband is suitable for the Internet, computer resource sharing and video and audio transmission.

At present, it is estimated that power companies in more than 40 countries around the world are embarking on a PLC pilot program. In particular, in many European countries, because most of their buildings are constructed of stone, the general residents are afraid to destroy their stone structure and overall aesthetics. They are less willing to relocate the network route. Therefore, in the case of major central European regions, the fixed-line penetration rate is only about 20%, which poses a high obstacle to the development of ADSL broadband services. However, due to the penetration of power lines in these European countries, Up to 100%, it is very beneficial to provide broadband services with PLC. Therefore, the research and development of PLC technology in European countries are earlier than other countries, and more time, talents and funds are invested, so whether it is in the access type or Indoor PLC technology is in a leading position.

In general, referring to Fig. 1, the working principle of the PLC is to superimpose the low power signal 90 on the power waveform 91 of the alternating current to transmit the low power signals 90 through the power line, so that the power line is converted into a communication network. Therefore, in order to ensure that the low power signal and the power waveform can coexist and be separable, the frequency of the low power signal used in the PLC narrow frequency is about 3 to 148.5 KHz, and the frequency of the low power signal used in the PLC wide frequency is 1 to 30 MHz. In this way, it can be easily separated and separated from the 50 or 60 Hz frequency used by the power waveform. Since PLC technology utilizes existing power lines to transmit these low-power signals 90, PLC technology has the advantage of eliminating the need to lay network lines, but its disadvantages, compared to other wired broadband communications in development or use. The power line is different from the general data communication line. When transmitting data on it, it is more susceptible to interference from external noise, and the attenuation of the line signal is also greater. In addition, since different home appliances connected to the power line are different. The impedance, so with the opening and closing of each electrical appliance, the power line will present different varying impedance values at any time, resulting in an increase in the difficulty of correctly transmitting data.

In recent years, a transmission technology called "Homeplug", which is used to make the power line a wired network, has become increasingly mature. The transmission technology is mainly applied to the home appliance of the home network, external converter or internal Modeling group type exists, its converter can be divided into Ethernet and USB due to different adapter specifications. Currently, it is mainly Ethernet. Intellon, a leading chip manufacturer, has targeted more than 500 families in the United States. In the field of "HomePlug" transmission technology, it was found that it can reach 99% coverage, that is, 99% of the household power outlets can receive the signal of Homeplug 1.0, confirming that PLC technology is indeed feasible. Communication Technology. Therefore, in recent years, many companies have designed and developed a variety of Powerline to Ethernet Adapters designed for home and small offices based on HomePlug 1.0 transmission technology. See Figure 2 As shown, a power connector 94 and an Ethernet docking station 95 (eg, an RJ-45 jack) are provided to allow a home or small office of the same power circuit to pass through an existing power line. The construction of a regional network, the transmission speed is generally up to 85Mbps, and has the protection function of data encryption, so for home or small office users, the power line / Ethernet converter 93 has been constructed for the regional network It provides the easiest and safest way to extend the reach of a regional network to all corners of a home or small office in the same electrical circuit. In other words, for a multi-floor home or small office that is difficult to route or cannot be covered by a wireless network, the power line/Ethernet converter 93 can be utilized only when the network cable is not required at all. The existing power lines in the building completely network the home or office. Generally speaking, when the power line/Ethernet converter 93 is used to set up the network, the user can immediately convert the power line in the house by plugging the power line/Ethernet converter 93 into the power plug. A high-speed and secure network architecture allows users to securely access the Internet via the power line or transmit personal or confidential information over the Internet, regardless of the room at home.

In today's society, many families need to go out to work to make money in order to maintain their basic needs. In addition to housework, they still need to take care of their young children and their elderly parents, so that they can take care of their children or parents at any time. In the daily life, many couples think about installing a webcam in their children's or parents' rooms to monitor the life of their children or parents through the computer. In order to achieve this goal, it is necessary to re-route the network in each room in the home, and install a webcam in the children's room or parent's room, so that the video and audio signals captured by the network camera can be routed through the network. A computer that is sent to the couple's room. However, daily life is dynamic, the activity space is not fixed, but the system is changing at any time, sometimes in the laundry room to handle housework, sometimes in the kitchen to prepare meals, sometimes in the living room to enjoy music..., even if installed in the home Internet cameras and computers are also limited by their fixed installation environment, and they are unable to perform their due monitoring. If you want to extend the scope of monitoring to each room, you will have to invest more money and Time, the deployment of more complex network routes, and the installation of multiple network cameras and computers, resulting in high costs, and can not be popularized to the general market. Therefore, when the aforementioned PLC technology is becoming more and more mature, how to use the existing power lines in the home or small office to design a network digital image display and image monitoring system with extremely low equipment cost and the simplest system architecture. The realization of the plug-and-play image monitoring function has become an important issue for the industry to study and improve.

In view of the shortcomings of the aforementioned conventional monitoring system, the inventors have finally developed and designed a plug-and-play network digital image display and image monitoring system of the present invention through long-term research and experiment, and the digital digital display of the network is expected. The image and audio signals captured by a network camera can be received through the existing power outlets and the installed power lines in the home or office, without the need to re-route the network and without setting up a computer. Play it out for plug-and-play image monitoring.

It is an object of the present invention to provide a plug-and-play network digital image display through a built-in or external power line/Ethernet converter (Powerline to Ethernet Adapter) ), plugged into an existing power outlet in the home or office to connect to a network camera using a power line that has been routed through the home or office. In this way, the network camera in a certain room can transmit the captured image and sound signal to the digital digital display in the other room through the power line, and through the network digital image display. Play the image and sound to achieve the plug-and-play environment dynamic monitoring function on the power socket without any additional route.

Another object of the present invention is to provide a memory card insertion interface on the digital display of the network for reading a digital image stored in a memory card of a general digital camera and displaying the digital image in the digital image display device. On, as an electronic photo frame, to achieve the purpose of decorating the home space and beautifying the home environment.

Still another object of the present invention is to provide a plug-and-play image monitoring system formed by protecting a digital display and a network camera of the network, the system further comprising a network router (router), the network One end of the router is connected to the Internet (Internet), and the other end is connected to the existing power outlet in the home or office through a power line/Ethernet converter, so that the user is at home. Or in an environment outside the office, you can still use a personal computer to connect to the network camera and the digital display of the network through the Internet router and the power line that has been installed in the home or office through the Internet. Line, monitor the dynamics in the home or office.

Another object of the present invention is that the system further includes a network digital video recording device connected to the network router to receive the network camera through the network camera. The incoming image and sound signals are recorded and stored in the digital video recording device of the network for storage for later reference.

In order to facilitate the review, the review committee can have a better understanding and understanding of the purpose, technical features and functions of the present invention. Several embodiments are described in detail, and the drawings are described in detail as follows:

The present invention is a plug-and-play network digital image display and image monitoring system. Referring to FIG. 3, in a first embodiment of the present invention, the network digital image display 30 includes a display mode. A display module 32 and a built-in Ethernet/power line converter 34, etc., the display module 32 is configured to play the received digital audio and video data stream, including a digital audio and video signal. The processor 320, a display panel 321 (such as an LCD panel), a digital/analog sound controller 322, a speaker 323, a memory card docking interface 324, a button group 326, a memory 327, and a TCP/IP (Transmission Control Protocol/Internet Protocol) chip 328 and an Ethernet physical layer chip 329 and the like, wherein the digital audio and video signal processor 320 processes the received digital audio and video data stream, and displays the digital image in The display panel 321 processes the received digital sound and is played by the speaker 323 through the conversion of the digital/analog sound controller 322. The memory card insertion interface 324 is configured to insert a memory. card The digital video signal processor 320 can read the digital image stored in the memory card and display the digital image on the display panel 321, so that the network digital image display 30 can be The electronic camera is connected to the digital audio signal processor 320 for inputting an operation command; the memory 327 is connected to the digital audio signal processor 320 for temporarily storing the digital audio and video. The command and data required for the operation of the signal processor 320; one end of the TCP/IP chip 328 is connected to the digital video signal processor 320, and the other end is connected to the Ethernet physical layer chip 329. The network packet received by the Ethernet physical layer chip 329 is directly connected to the Internet or other network device (such as a network router) through the Ethernet physical layer chip 329. The digital video signal processor 320 can be transmitted via the TCP/IP chip 328. In this first embodiment, the TCP/IP chip 328 includes a Transmission Control Protocol (TCP) and an Internet Protocol (IP). The network digital display 30 can be directly transmitted through the Ethernet physical layer chip 329, and the Internet or other network device (such as a network router) without any support of any computer operating system. Connected lines receive digital video and audio signals from the Internet or other network devices and play them out.

In the first embodiment, as shown in FIG. 3, the built-in Ethernet/power line converter 34 includes an AC-to-DC regulator 341 and a signal conversion. (signal transformer) 342, an analog/digital signal converter 343 and a powerline networking chip 344, wherein the AC/DC rectifier 341 and the signal converter 342 are Connected to a power plug 37 to receive power from the power outlet when the power plug 37 is plugged into an existing power outlet in the home or office; the AC/DC rectifier 341 is to transmit the power socket The AC power is converted into DC power and supplied to the various chips and components in the digital image display 30 of the network for normal operation; the signal converter 342 separates the low power signals carried from the AC power ( Decoupled, 嗣, converts the low power analog signal into a digital signal through the analog/digital converter 343, and converts the network packet into a network packet via the power line network chip 344 And the network packet to the Ethernet physical layer chip 329. Thus, when the power plug 37 is plugged into an existing power outlet in the home or office, the network digital image display 30 can be connected to a network camera by using a power line that has been placed in the home or office. line. In this way, the network camera in a certain room can transmit the captured image and sound signal through the power line to the network digital image display 30 in other rooms, and through the network digital image display. 30. The digital image captured by the network camera device and the sound are played out, so that the plug-and-play environment dynamic monitoring function can be successfully realized on the power socket without completely providing the network route.

However, the invention is not limited thereto. In the second embodiment of the present invention, as shown in FIG. 4, the network digital image display 38 includes an AC/DC rectifier 351, a digital audio signal processor 320, a display panel 321, and a digital/ Analog audio controller 322, a speaker 323, a memory card docking interface 324, a button group 326, a memory 327, a TCP/IP chip 328, and an Ethernet physical layer chip 329, etc., wherein the communication One end of the DC rectifier 351 is provided with a power plug 35 for converting the AC power transmitted from the power plug 35 into DC power and providing it to other chips and components in the digital image display 38 of the network; the digital audio and video signal processing The device 320 displays the received digital image on the display panel 321, and processes the received digital sound, and then is played by the speaker 323 through the conversion of the digital/analog sound controller 322; The memory card insertion interface 324 is configured to insert a memory card, so that the digital video signal processor 320 can read the digital image stored therein and display it on the display panel 321; the button group 326 And the memory 327 is connected to the digital video signal processor 320 for inputting an operation command and temporarily storing instructions and data required for the operation of the digital video signal processor 320; the TCP/IP chip 328 is respectively The Ethernet physical layer chip 329 and the digital audio signal processor 320 are connected such that the Ethernet physical layer chip 329 can directly communicate with the Internet or other network device through an RJ-45 plug 381 ( For example, the network router is connected to receive digital video and audio signals from the Internet or other network device, and is transmitted to the digital video signal processor 320 via the TCP/IP chip 328 for playback. In the second embodiment shown in FIG. 4, the RJ-45 plug 381 is plugged into an external Ethernet/power line converter 39, the external Ethernet/power line conversion The device 39 includes an RJ-45 socket 391, an AC/DC rectifier 341, a signal converter 342, an analog/digital converter 343, and a power line network chip 344, wherein the RJ-45 socket 391 is coupled to The RJ-45 plug 381 is connected to transmit the network packet received by the external Ethernet/power line converter 39 from the power socket to the network digital image display 38; the AC/DC rectifier The 341 system converts the AC power transmitted from the power socket into DC power for use by the power line network chip 344. The signal converter 342 separates the low power signal carried in the AC power and transmits the analog/digital signal. The converter 343 converts the low power analog signal into a digital signal, and after converting the power line network chip 344 into a network packet, transmits the network packet to the RJ-45 socket 391 and the RJ-45 plug 381 to the network packet. The Ethernet Physical layer wafer 329. In this way, the network digital image display 38 receives the digital image and audio signal captured by a network camera in a certain room through the power line, and plays it out to realize plug-and-play environment dynamics. Monitoring function. In this case, in the second embodiment of the present invention, as shown in FIG. 4, the AC/DC rectifier 351 and the power plug 35 can be omitted, and the RJ-45 can be omitted. The socket 391 supplies the DC power generated by the AC/DC rectifier 341 to the network digital image display 38.

A third embodiment of the present invention is an image monitoring system formed by interconnecting the network digital image display and a network camera device by using a power line that has been disposed in a home or office. As shown, the system 10 includes a network camera 20 and a network digital display 30. The network camera 20 and the network digital display 30 are respectively connected via a built-in Ethernet/ The power line converter 34 (as shown in FIG. 3) or the external Ethernet/power line converter 72 is plugged into an existing power outlet 41 in the home or office to be deployed in the home or office. The power lines 40 are connected to each other such that the image and audio signals captured by the network camera device 20 can be transmitted to the digital image display device 30 through the power line 40 and played through the network digital image display device 30. When this is done, the video surveillance function for plug-and-play operation on the power outlets 41 can be successfully achieved without the need to additionally route the network. At least one memory card insertion interface 324 (shown in FIG. 4) provided by the network digital image display 30 can be used to read the memory card 60 of a general digital camera when it is inserted into the power socket 41. The digital image stored in the image is displayed and used as an electronic photo frame to achieve the purpose of decorating the home space and beautifying the home environment. In addition, the system 10 further includes a network router 70. One end of the network router 70 is connected to the Internet 71, and the other end is connected through an external Ethernet/power line converter 72. Plugged into the existing power outlet 41 in the home or office, so that when the user is in a home or office environment, the user can still use the personal computer through the Internet 71, through the network router 70, using the home or A power line 40 has been placed in the office to interconnect with the network camera 20 to monitor the dynamics in the home or office, or to enable the network digital display 30 to be received by the network router 70. The digital audio and video data stream transmitted from the network 71 is played back. In addition, the system 10 further includes a network digital video recoder 50, which can be directly connected to the Internet or other network without any support from any computer operating system. A network device (such as a network router) is connected to the network. Thus, after the network digital image recording device 50 is connected to the network router 70, the network camera device 20 can pass through the network router 70. The captured image and sound signals are transmitted and stored to the network digital image recording device 50 for storage for later reference.

In the foregoing third embodiment, as shown in FIGS. 5 and 6, the network camera device 20 includes a camera module 22 and a control module 24, and the camera module 22 is a digital video stream for capturing images and sounds and encoding them into a predetermined format (eg, JPEG format). The camera module 22 includes an image capturing chip 221 (eg, CMOS camera chip), The image decoding chip 222 (eg, MJPEG CODEC chip) and a dynamic random access memory (DRAM) 223 and the like, wherein the image capturing chip 221 converts the captured image into a YUV signal format. And transmitting the image to the image decoding chip 222, encoding the image by the image decoding chip 222, encoding the digital audio and video data stream into a predetermined format (eg, JPEG format), and temporarily storing the dynamic audio data stream. Accessing the memory 223; the control module 24 is used for initializing the internal registration of the image capture chip 221, and setting the data of the specified digital audio and video stream format (setting Information) The image decodes the chip 222 and directly connects to the Internet without the support of any computer operating system. The control module 24 includes a microprocessor control unit (MCU) chip. 241, a random access memory 242, a TCP/IP chip 243, and an Ethernet physical layer chip 244, wherein the random access memory 242 is used to temporarily store the network camera 20 during operation. The MCU chip 241 is used to control the overall operation of the network camera device 20, and after reading the digital video data stream in the dynamic random access memory 223, the TCP/IP is sequentially transmitted through the TCP/IP. The chip 243 and the Ethernet physical layer chip 244 convert the digital audio and video data stream into a network packet and transmit it. It should be noted that the TCP/IP chip 243 includes a transmission control communication protocol and an internet communication protocol, so that the network camera device 20 can directly pass the B without any support of any computer operating system. The network entity layer chip 244 is connected to the Internet or other network device to transmit the captured digital audio and video data stream.

Referring to Figures 5 and 6, the network camera device 20 further includes a built-in Ethernet/power line converter 26, the Ethernet/power line converter 26 including an AC/DC rectifier 261. And a signal converter 262, a type of digital/digital converter 263 and a power line network chip 264, and the like, the AC/DC rectifier 261 and the signal converter 262 are respectively connected to a power plug 27 for the power plug When the 27 is plugged into the existing power outlet 41 in the home or office, the AC power transmitted from the power outlet 41 is received, wherein the AC/DC rectifier 261 converts the AC power transmitted from the power outlet 41 into DC power. And providing the chips and components in the network camera device 20 for normal operation; the power line network chip 264 is connected to the Ethernet physical layer chip 244, and is received by the Ethernet entity. The network packet sent by the layer chip 244 is digitized and transmitted to the analog/digital converter 263, and the analog/digital converter 263 converts the digital signal into a low power. The analog signal is then superimposed or coupled to the AC power waveform by the signal converter 262, and the low power analog signal is transmitted through the already arranged power line in the home or office. Thus, when the power plug 27 is plugged into an existing power outlet 41 in the home or office, the network camera 20 can utilize the deployed power line 40, respectively, with the network digital image display 30 and the network. The routers 70 are connected to each other.

The above description is only one specific embodiment of the present invention, but the present invention is not limited thereto when it is actually applied. In the fourth embodiment of the present invention, as shown in FIGS. 5 and 7, the network camera device 28 includes a camera module 22, a control module 24, and an AC/DC rectifier 251. One end of the DC rectifier 251 is provided with a power plug 25 for converting the AC power transmitted from the power plug 25 into DC power, and is provided to the camera module 22 and the control module 24; the camera module 22 includes a The image capture chip 221, an image decoded chip 222, and a dynamic random access memory 223, wherein the image capture chip 221 converts the captured image into a YUV signal format and The image decoding chip 222 is sent to the image decoding chip 222, encoded by the image decoding chip 222, encoded into a digital audio and video data stream of a predetermined format, and temporarily stored in the dynamic random access memory 223; The module 24 includes an MCU chip 241, a random access memory 242, a TCP/IP chip 243, and an Ethernet physical layer chip 244, wherein the random access memory 242 is used to temporarily store the Network camera 28 operates The MCU chip 241 is used to control the overall operation of the network camera device 28, and after reading the digital video data stream in the dynamic random access memory 223, the TCP/sequence is sequentially transmitted through the TCP/ The IP chip 243 and the Ethernet physical layer chip 244 convert the digital audio and video data stream into a network packet, and then transmit it through a network plug connector 281 (for example, an RJ-45 plug). In the fourth embodiment shown in FIG. 7, the network plug connector 281 is plugged into an external Ethernet/power line converter 29, and the Ethernet/power line converter 29 includes a a network socket 291 (such as an RJ-45 socket), an AC/DC rectifier 261, a signal converter 262, a analog/digital converter 263, and a power line network chip 264, wherein the network The socket 291 is connected to the network plug connector 281 to receive the network packet transmitted by the network camera device 28. The AC/DC rectifier 261 converts the AC power transmitted from the power socket into DC power. And being provided to the power line network chip 264; the power line network chip 264 is connected to the network socket 291 for receiving the network packet and digitizing the network packet by the analogy The digital signal converter 263 converts the digital signal into a low power analog signal, and then superimposes or couples the low power analog signal to the AC power waveform via the signal converter 262, using the already deployed power line 40 in the home or office. , the low power Analog signals are transmitted to the digital network 30 and image display 70 of the network router. In particular, in the fourth embodiment of the present invention, as shown in FIG. 7, the AC/DC rectifier 251 and the power plug 25 can be omitted, and the RJ-45 can be omitted. The socket 291 supplies the DC power generated by the AC/DC rectifier 261 to the network camera 28.

In addition, in the foregoing embodiment, the network camera device is a separate device. However, the present invention is not limited thereto, and the network camera device may also be used. Integrated into a luminaire or other home appliance to take advantage of the already deployed power lines in the home or office when the luminaire or the home appliance is plugged into an existing power outlet in the home or office. It is connected to the network digital image display and the network router respectively to realize the image monitoring function of plug-and-play on the power socket.

The above description is only a preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and any changes or modifications that can be easily conceived in the field of the present invention are known to those skilled in the art. All of them should be covered by the following patent application scope of the present invention.

Plug and play image surveillance system. . . 10

Webcam. . . 20, 28

Camera module. . . twenty two

The image captures the wafer. . . 221

Image decoded wafer. . . 222

Dynamic random access memory. . . 223

Control module. . . twenty four

MCU chip. . . 241

Random access memory. . . 242

TCP/IP chip. . . 243, 328

Ethernet physical layer chip. . . 244, 329

Power plug. . . 25, 27, 35, 37

AC / DC rectifier. . . 251, 261, 341, 351

Built-in Ethernet/power line converter. . . . 26, 34

Signal converter. . . . 262,342

Analog/digital converter. . . 263, 343

Power line network chip. . . 264, 344

Network plug connector. . . 281,381

External Ethernet/Power Line Converter. . . 29, 39, 72

Network docking station. . . 291,391

Network digital image display. . . 30, 38

Imaging module. . . 32

Digital audio and video signal processor. . . 320

Display panel. . . 321

Digital/analog sound controller. . . 322

horn. . . 323

Memory card docking interface. . . 324

Button group. . . 326

Memory. . . 327

power line. . . 40

Power outlet. . . 41

Network digital image recording device. . . 50

Memory card. . . 60

Network router. . . 70

Internet. . . 71

1 is a schematic diagram showing an electrical waveform of a conventional low-power signal superimposed on an alternating current power; FIG. 2 is a schematic diagram showing the appearance of a conventional power line/Ethernet converter; and FIG. 3 is a network of the first embodiment of the present invention. FIG. 4 is a circuit block diagram of a network digital image display according to a second embodiment of the present invention; and FIG. 5 is a plug-and-play diagram of a third embodiment of the present invention. FIG. 6 is a schematic block diagram of a network camera device according to a third embodiment of the present invention; and FIG. 7 is a circuit block of a network camera device in a fourth embodiment of the present invention. schematic diagram.

Network digital image display. . . 30

Imaging module. . . 32

Digital audio and video signal processor. . . 320

Display panel. . . 321

Digital/analog sound controller. . . 322

horn. . . 323

Memory card docking interface. . . 324

Button group. . . 326

Memory. . . 327

TCP/IP chip. . . 328

Ethernet physical layer chip. . . 329

Built-in Ethernet/power line converter. . . 34

AC / DC rectifier. . . 341

Signal converter. . . 342

Analog/digital converter. . . 343

Power line network chip. . . 344

Power plug. . . 37

Claims (9)

A network digital image display having a display module and a built-in Ethernet/power line converter, wherein the display module comprises: an Ethernet physical layer chip for receiving a network a TCP/IP chip, connected to the Ethernet physical layer chip, for receiving a network packet transmitted by the Ethernet physical layer chip, and controlling the communication protocol and the Internet according to the transmission a communication protocol for processing a network packet; a digital audio and video signal processor coupled to the TCP/IP chip for receiving and processing a digital audio and video stream transmitted from the TCP/IP chip a display panel coupled to the digital video signal processor for displaying the received digital image; a digital/analog sound controller coupled to the digital audio signal processor for receiving The digital sound is converted into an analog sound signal; a speaker is connected to the digital/analog sound controller for playing the received analog sound signal; a button group is associated with the digital audio and video The processor is connected to the user for inputting an operation command; and a memory is connected to the digital audio and video signal processor for temporarily storing instructions and data required for the operation of the digital video signal processor; The constructed Ethernet/power line converter includes: a power line network chip connected to the Ethernet physical layer chip Connected, and can convert digital signals into network packets and transmit them to the Ethernet physical layer chip; a type of digital/digital signal converter is connected to the power line network chip and can be analogous to low power The signal is converted into a digital signal and transmitted to the power line network chip; a signal converter is connected to the analog/digital converter, and can separate the low power analog signal carried in the AC power, and Transmitting to the analog/digital converter; a power plug is connected to the signal converter and is plugged into an existing power outlet in the home or office to transmit AC power to the signal converter; And an AC/DC rectifier connected to the power plug for receiving AC power from the power plug and converting the AC power into DC power for use by each chip and component in the network camera device . The network digital image display device of claim 1, further comprising: a memory card insertion interface, connected to the digital audio and video signal processor, for inserting a memory card, so that the digital audio and video signal processor can be read The digital image stored in the memory card is taken, and the digital image is displayed on the display panel. A plug-and-play network digital image display and image monitoring system, the system includes: a network camera device that can directly connect to the Internet or other network devices without the support of any computer operating system The network camera device includes an image capture chip for capturing images and shadowing a signal that is converted into a YUV format; an image decoded chip is used to receive the image from the image capture chip and encode the signal into a digital audio and video data stream of a predetermined format; a dynamic random access memory system Receiving a digital audio and video data stream sent from the image decoding chip and temporarily storing it; a microprocessor control unit chip is used to control the overall operation of the network camera device, and to the dynamic random access memory Reading a digital audio and video data stream; a random access memory for temporarily storing instructions and data required for operation of the network camera; a TCP/IP chip for receiving the microprocessor Controlling the digital video data stream transmitted from the unit chip, and processing the digital audio and video data stream according to the transmission control communication protocol and the internet communication protocol; and an Ethernet physical layer chip for receiving the TCP/IP The data from the chip is converted into a network packet and transmitted. A network digital image display can be directly connected to the Internet or without the support of any computer operating system. The network device is connected to the line; and the network camera device and the digital display device of the network are respectively connected to an existing power socket in the home or office through a built-in Ethernet/power line converter. Using the already-equipped power lines in the home or office to connect to each other, so that the video and audio signals captured by the network camera can be transmitted to the digital display of the network through the power line and through the network. The digital image display is played out. The system of claim 3, wherein the network camera further comprises a built-in Ethernet/power line converter, the built-in Ethernet/power line converter comprising: a power plug, Used to plug in existing electricity in the home or office An AC/DC rectifier connected to the power plug for receiving AC power from the power plug and converting the AC power into DC power for supplying to each chip in the network camera And a component use; a power line network chip is connected to the Ethernet physical layer chip for receiving a network packet transmitted by the Ethernet physical layer chip, and digitizing the network packet Processing; a type of ratio/digital converter is connected to the power line network chip for receiving a digital signal transmitted from the power line network chip, and converting the digital signal into a low power analog signal; and a signal The converter is respectively connected to the analog/digital converter and the power plug for receiving the low power analog signal from the analog/digital converter, and superimposing or coupling the low power analog signal to The AC power waveform is transmitted through the power plug. The system of claim 3, wherein the network digital image display comprises: an Ethernet physical layer chip for receiving a network packet; a TCP/IP chip and the Ethernet physical layer The chip is connected to receive the network packet transmitted by the Ethernet physical layer chip, and process the network packet according to the transmission control communication protocol and the internet communication protocol; a digital audio and video signal processor, And connected to the TCP/IP chip for receiving and processing a digital audio and video data stream transmitted from the TCP/IP chip; a display panel is connected to the digital video signal processor for displaying the received digital image; a digital/analog sound controller is connected to the digital audio signal processor for receiving the received The digital audio signal is converted into an analog sound signal; a speaker is connected to the digital/analog sound controller for playing the received analog sound signal; a button group is connected to the digital audio signal The processor is connected to the user for inputting an operation command; and a memory is connected to the digital audio and video signal processor for temporarily storing instructions and data required for the operation of the digital video signal processor. The system of claim 5, wherein the network digital image display further comprises a built-in Ethernet/power line converter, the built-in Ethernet/power line converter comprising: a power plug Used to plug into an existing power outlet in a home or office; an AC/DC rectifier is connected to the power plug to receive AC power from the power plug and convert the AC power into DC power is supplied to each chip and component in the network camera device; a signal converter is respectively connected to the power plug for receiving AC power from the power plug, and is self-AC power The low-power analog signal carried is separated; a analog/digital converter is connected to the signal converter for receiving the low-power analog signal transmitted by the signal converter, and The low power analog signal is converted into a digital signal; and a power line network chip is connected to the analog/digital signal converter for receiving the digital signal transmitted by the analog/digital converter, and the digital signal Convert to a network packet. The system of claim 5, wherein the network digital image display further comprises: a memory card insertion interface, connected to the digital audio and video signal processor, for inserting a memory card, so that the digital audio and video signal processing The device can read the digital image stored in the memory card and display the digital image on the display panel. The system of claim 3, wherein the system further comprises a network router, one end of which is connected to the Internet, and the other end of which is connected through a power line/Ethernet converter. Connect to the existing power outlets in the home or office, and use the power cables that have been installed in the home or office to connect to the network camera and the network digital image display. The system of claim 8, wherein the system further comprises a network digital image recording device, wherein the network digital image recording device can directly connect to the network router without any computer operating system support. Through the network router, the image and sound signals captured by the network camera device are stored.