CN218998129U - Image pickup apparatus and camera system - Google Patents

Abstract

The embodiment of the utility model provides an image pickup apparatus and a camera system. The camera shooting device comprises an image acquisition device, a main control chip and a signal processing circuit, wherein the image acquisition device is connected with the main control chip, a first end of the signal processing circuit is used for being connected with a power line, and a second end of the signal processing circuit is connected with the main control chip; the main control chip is used for acquiring the audio and video signals acquired by the image acquisition device and sending the audio and video signals to the signal processing circuit; the signal processing circuit is used for converting the audio and video signals into first information signals meeting the power transmission requirements and sending the first information signals to the power line for transmission; and the device is used for receiving a second information signal transmitted by the power line, converting the second information signal into a control signal which can be identified by the main control chip and sending the control signal to the main control chip. The construction cost required for such an image pickup apparatus is low.

Description

Image pickup apparatus and camera system

Technical Field

The present utility model relates to the field of electronic devices, and more particularly to an image pickup apparatus and a camera system.

Background

The camera can collect information such as images and audios, and the application of the camera in various places is very wide at present. For example, some users may install cameras at home to facilitate timely viewing and understanding of personnel, pets, properties, etc. at home. Existing cameras typically require either a wireless network or a wired network to operate. However, in some areas, such as some old cells, the cost of retrofitting a wired or wireless network is too high to facilitate the placement and application of cameras.

Disclosure of Invention

The present utility model has been made in view of the above-described problems. The utility model provides an image pickup apparatus and a camera system.

According to an aspect of the present utility model, there is provided an image pickup apparatus including an image pickup device, a main control chip, and a signal processing circuit, the image pickup device being connected to the main control chip, a first end of the signal processing circuit being for connection to a power line, a second end of the signal processing circuit being connected to the main control chip; the main control chip is used for acquiring the audio and video signals acquired by the image acquisition device and sending the audio and video signals to the signal processing circuit; the signal processing circuit is used for converting the audio and video signals into first information signals meeting the power transmission requirements and sending the first information signals to the power line for transmission; and the device is used for receiving a second information signal transmitted by the power line, converting the second information signal into a control signal which can be identified by the main control chip and sending the control signal to the main control chip.

Illustratively, the signal processing circuit includes a power line communication chip, an input signal conversion circuit, an output signal conversion circuit, and a high pass filter; one end of the input signal conversion circuit is connected with the high-pass filter, the other end of the input signal conversion circuit is connected with the power line communication chip, one end of the output signal conversion circuit is connected with the high-pass filter, the other end of the output signal conversion circuit is connected with the power line communication chip, the power line communication chip is also connected with the main control chip, and the high-pass filter is used for being connected with a power line; the power line communication chip is used for modulating the audio and video signals from the main control chip, transmitting the modulated audio and video signals to the output signal conversion circuit, demodulating the second information signals from the input signal conversion circuit, and transmitting the control signals obtained by demodulation to the main control chip; the high pass filter is used for carrying out high pass filtering on a power line transmission signal from a power line to extract a second information signal from the power line transmission signal, and carrying out high pass filtering on an audio/video signal from the output signal conversion circuit to obtain a first information signal; the output signal conversion circuit is used for converting the modulated audio and video signals from the power line communication chip; the input signal conversion circuit is used for converting the second information signal from the high-pass filter.

The output signal conversion circuit includes an amplifying circuit for amplifying the modulated audio/video signal and a first filter circuit; the first filter circuit is used for filtering the amplified audio and video signals.

The input signal conversion circuit comprises a second filter circuit for filtering the second information signal.

The signal processing circuit further includes an isolation circuit, one end of the isolation circuit is connected to the input signal conversion circuit and the output signal conversion circuit, respectively, and the other end of the isolation circuit is connected to the high-pass filter, and the isolation circuit is used for electrically isolating the input signal conversion circuit and the output signal conversion circuit from the high-pass filter, respectively.

The main control chip and the power line communication chip are connected through a medium-related interface.

The image capturing apparatus further includes a wireless access point module for connecting with the wireless station apparatus; the main control chip is connected with the wireless access point module through a secure digital input/output interface or a universal serial bus interface.

Illustratively, the image pickup apparatus further includes: a power supply circuit for connecting with the power line, and for extracting a power signal from a power line transmission signal from the power line, and transmitting the power signal to the load; the load comprises one or more of an image acquisition device, a main control chip and a signal processing circuit, and the power supply circuit is connected with the power input end of one or more of the image acquisition device, the main control chip and the signal processing circuit.

The power supply circuit comprises a transformer circuit and a low-pass filter which are connected with each other, wherein the transformer circuit is used for being connected with a load, and the low-pass filter is used for being connected with a power line; the low-pass filter is used for extracting a power signal from the power line transmission signal; the transformation circuit is used for converting the power signal from alternating current to direct current and transmitting the power signal of the direct current to the load.

According to another aspect of the present utility model, there is provided a camera system including: one or more of the above-described image pickup apparatuses; and the power line-to-wire module is used for being connected with the power line and the wire network respectively.

According to the image pickup apparatus and the camera system of the embodiment of the present utility model, the information signal is transmitted by means of power communication. Such an apparatus requires lower construction costs than an image pickup apparatus that transmits signals using a wired network or a wireless network. The image pickup device according to the embodiment of the utility model is suitable for any place where the power line is installed, and particularly when the image pickup device is additionally installed at the place where the power line is available and the network line is not available, the construction difficulty and cost required by additionally installing the network line can be greatly reduced by adopting the device.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent from the following more particular description of embodiments of the present utility model, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, and not constitute a limitation to the utility model. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 shows a schematic configuration diagram of an image pickup apparatus according to an embodiment of the present utility model;

fig. 2 shows a schematic diagram of a signal conversion circuit and a PLC chip according to an embodiment of the present utility model;

fig. 3 shows a schematic diagram of an image capturing apparatus employed as a wireless access point (WiFi AP) according to an embodiment of the present utility model; and

fig. 4 shows a schematic diagram of a camera system according to an embodiment of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, exemplary embodiments according to the present utility model will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present utility model and not all embodiments of the present utility model, and it should be understood that the present utility model is not limited by the example embodiments described herein. Based on the embodiments of the utility model described in the present application, all other embodiments that a person skilled in the art would have without inventive effort shall fall within the scope of the utility model.

In order to at least partially solve the above technical problems, embodiments of the present utility model provide an image capturing apparatus and a camera system, which transmit information signals by means of power communication, and which require low construction costs.

Fig. 1 shows a schematic configuration diagram of an image capturing apparatus 100 according to an embodiment of the present utility model. As shown in fig. 1, the image capturing apparatus 100 may include an image capturing device 110, a main control chip 120, and a signal processing circuit 130. It should be noted that fig. 1 is only an example and not a limitation of the present utility model. For example, some of the elements included in the image capturing apparatus 100 shown in fig. 1 are optional, such as a Speaker (SPK), a WiFi AP module, a motor, etc., which may be absent or replaced with other types of elements, and the image capturing apparatus 100 may further include other elements than those shown in fig. 1. As another example, various modules included in the signal processing circuit 130 shown in fig. 1 may be optional, and some of the modules may be omitted or replaced with other modules. As another example, the power supply circuit 140 shown in fig. 1 is also optional and may not be present.

The image acquisition device 110 is connected with the main control chip 120, a first end of the signal processing circuit 130 is used for being connected with a power line, and a second end of the signal processing circuit 130 is connected with the main control chip 120. Fig. 1 shows that the power line includes a neutral line and a live line. As shown in fig. 1, the signal processing circuit 130 is connected between the power line and the main control chip 120.

The main control chip 120 is used for acquiring the audio and video signals acquired by the image acquisition device 110 and sending the audio and video signals to the signal processing circuit 130. The signal processing circuit 130 is configured to convert the audio/video signal into a first information signal that meets the power transmission requirement, and send the first information signal to the power line for transmission; and, the device is configured to receive the second information signal transmitted via the power line, convert the second information signal into a control signal identifiable by the main control chip 120, and send the control signal to the main control chip 120.

Illustratively, the main control chip 120 may be implemented in at least one hardware form of a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a microprocessor, and may include one or a combination of several of a Central Processing Unit (CPU), an image processor (GPU), an Application Specific Integrated Circuit (ASIC), or other form of processing unit having data processing and/or instruction execution capabilities.

For example, the image capture device 110 may include a video module and an audio module. The video module may include a lens (not shown in fig. 1) and an image sensor (see fig. 1). The lens is used to collect light in the physical world and focus the imaged light onto the image sensor. The image sensor may be used to convert a received optical signal into an electrical signal. The video module may also include an infrared light supplement lamp (see fig. 1) for supplementing light to the subject being acquired, for example. Illustratively, the audio module may include a Microphone (MIC) and/or a Speaker (SPK). Of course, the speaker may also be considered as a device independent of the image capture device 110. The video module may collect video signals, which may include signals representing still images and/or dynamic video. The audio module may collect audio signals. Accordingly, by the image pickup device 110, an audio/video signal can be picked up.

The image capturing apparatus 100 according to the embodiment of the present utility model may be an apparatus in which the image capturing range is changeable, for example. For example, the lens in the image pickup device 110 is a rotatable lens. Further, the image pickup apparatus 100 may include a base on which a lens may be provided, so that the image pickup range of the image pickup apparatus 100 may also be changed by moving the base. Illustratively, the image capturing apparatus 100 may further include a cradle head function module. For example, the pan-tilt functional module may include a vertical direction motor and/or a horizontal direction motor. The lens can be driven to rotate and/or the base can be driven to move through the cradle head function module, so that the visual field range of the camera equipment 100 can be changed, and a user can conveniently view scenes under different visual angles. In addition, the motor in the cradle head functional module can be controlled in real time, so that the target tracking range in image processing is conveniently enlarged.

The video module, the audio module and the pan-tilt functional module can be used as peripheral devices of the main control chip 120, namely, are respectively connected with the main control chip 120, and realize the transmission of information signals with the main control chip 120. Note that the information signals described herein may include data signals and/or control signals. The data signal comprises a video signal and/or an audio signal. The video module may transmit the video signal collected by the video module to the main control chip 120. The audio module can transmit the audio signals collected by the audio module to the main control chip. The main control chip 120 may transmit control signals to its various peripheral devices. The remote control of the image pickup apparatus 100 is conveniently realized by transmitting a control signal to the image pickup apparatus 100 through a power line.

The signal transmitted over the power line needs to meet certain power transmission requirements, e.g. needs to have a certain magnitude of voltage, frequency, etc. Therefore, the signal processing circuit 130 can convert the audio/video signal output by the main control chip 120 into the first information signal meeting the requirement, and then the signal is incorporated into the power line for transmission. The power line transmission signal on the power line may contain both a power signal and an information signal, both of which may be superimposed on the power line by orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) techniques. In addition, the signal processing circuit 130 may also acquire a second information signal transmitted to the image pickup apparatus 100 via the power line from the power line, and convert the signal into a control signal recognizable by the main control chip 120. For example, the second information signal may include a motor control signal for controlling the operation of the horizontal direction motor and/or the vertical direction motor. After receiving the motor control signal, the main control chip 120 may control the corresponding motor to operate based on the motor control signal, so as to rotate the lens of the image capturing apparatus 100 and/or move the base, thereby changing the image capturing range.

According to the image pickup apparatus of the embodiment of the present utility model, the information signal is transmitted by means of power communication. Such an apparatus requires lower construction costs than an image pickup apparatus that transmits signals using a wired network or a wireless network. The image pickup device according to the embodiment of the utility model is suitable for any place where the power line is installed, and particularly when the image pickup device is additionally installed at the place where the power line is available and the network line is not available, the construction difficulty and cost required by additionally installing the network line can be greatly reduced by adopting the device.

According to an embodiment of the utility model, the signal processing circuit comprises a power line communication chip, an input signal conversion circuit, an output signal conversion circuit and a high pass filter; one end of the input signal conversion circuit is connected with the high-pass filter, the other end of the input signal conversion circuit is connected with the power line communication chip, one end of the output signal conversion circuit is connected with the high-pass filter, the other end of the output signal conversion circuit is connected with the power line communication chip, the power line communication chip is also connected with the main control chip, and the high-pass filter is used for being connected with a power line; the power line communication chip is used for modulating the audio and video signals from the main control chip, transmitting the modulated audio and video signals to the output signal conversion circuit, demodulating the second information signals from the input signal conversion circuit, and transmitting the control signals obtained by demodulation to the main control chip; the high pass filter is used for carrying out high pass filtering on a power line transmission signal from a power line to extract a second information signal from the power line transmission signal, and carrying out high pass filtering on an audio/video signal from the output signal conversion circuit to obtain a first information signal; the output signal conversion circuit is used for converting the modulated audio and video signals from the power line communication chip; the input signal conversion circuit is used for converting the second information signal from the high-pass filter.

Referring to fig. 1, the signal processing circuit 130 is shown to include a power line communication (Power Line Communication, PLC) chip 132, a signal conversion circuit 134, and a high pass filter 136. The signal conversion circuit 134 may include an input signal conversion circuit and an output signal conversion circuit (not shown in fig. 1).

The PLC Chip 132 may be implemented using any suitable System on Chip (SoC), such as an MSE500 Chip, an MSE510 Chip, or the like. The PLC chip 132 may perform format conversion, i.e., encoding and decoding of the received signal, so that the converted information signal satisfies the format requirements of the subsequent circuit for transmission. For example, the PLC chip 120 may modulate the audio/video signal from the main control chip 120 with a carrier wave, so that the audio/video signal is converted from a format of streaming media to a preset format capable of being transmitted on a power line. In addition, the PLC chip 120 may also demodulate the second information signal from the input signal conversion circuit, contrary to the above-described modulation process, which is understood by those skilled in the art and not described herein.

The high pass filter 136 may extract the second information signal from the power line transmission signal on the power line, which may be achieved by high pass filtering the power line transmission signal. As described above, the power line transmission signal on the power line contains both the power signal, which is typically a low-frequency alternating-current signal of a lower frequency, for example, an alternating-current signal of 50hz, and the information signal, which is typically a high-frequency alternating-current signal of a higher frequency, for example, an alternating-current signal of several tens of Mhz. Thus, a desired information signal can be extracted from the power line transmission signal by high-pass filtering. Conversely, when the audio/video signal acquired by the image acquisition device 110 needs to be transmitted to the power line for transmission through the power line, the audio/video signal subjected to a series of processes is output to the high-pass filter 136, and can be filtered by the high-pass filter 136 as well. Unlike the power line transmission signal, however, the audio-video signal contains substantially no power signal, and thus the first information signal obtained by the high-pass filtering is not significantly different from the audio-video signal before entering the high-pass filter 136.

By way of example and not limitation, the high pass filter 136 may be implemented with a blocking capacitor.

The input signal conversion circuit and the output signal conversion circuit are each connected between the PLC chip 132 and the high pass filter 136. The output signal conversion circuit is mainly used for converting a signal transmitted from the PLC chip 132 side to the high-pass filter 136 side, and the input signal conversion circuit is opposite to the output signal conversion circuit and is mainly used for converting a signal transmitted from the high-pass filter 136 side to the PLC chip 132 side. The conversion may be some transformation process for the signal, such as amplifying and/or filtering the signal, etc.

Through the modulation function of the PLC chip, the conversion function of the signal conversion circuit and the filtering function of the high-pass filter, the audio and video signals can be converted into first information signals meeting the power transmission requirement, namely, the first information signals with voltage and/or frequency meeting the preset power transmission requirement, so that the audio and video signals can be transmitted on a power line better. On the contrary, the second information signal can be extracted from the power line and converted into the required control signal through the demodulation function of the PLC chip, the conversion function of the signal conversion circuit, and the filtering function of the high-pass filter, so that the remote control of the image pickup apparatus 100 can be conveniently realized.

According to the embodiment of the utility model, the output signal conversion circuit comprises an amplifying circuit and a first filter circuit, wherein the amplifying circuit is used for amplifying the modulated audio and video signals; the first filter circuit is used for filtering the amplified audio and video signals.

Fig. 2 shows a schematic diagram of the structure of the signal conversion circuit 134 and the PLC chip 132 according to an embodiment of the present utility model. As shown in fig. 2, the signal conversion circuit 134 may include an output signal conversion circuit including an amplifying circuit 1342 and a first filter circuit 1344.

Fig. 2 shows that the output interface of the PLC chip 132 includes a tx+ interface and a TX-interface, indicating that the PLC chip 132 outputs a pair of differential signals. Transmitting the audio-video signal in the form of a differential signal can increase the stability of transmission. The differential signal is not a limitation of the present utility model, and other signal forms may be used to transmit the audio and video signals.

The amplifying circuit 1342 may be implemented with any type of amplifying circuit, which may include, for example, an operational amplifier or the like. The audio and video signals can be enhanced by the amplifying circuit. For example, the audio/video signal output by the PLC chip 132 may be an ac signal of-1V to +1v, and the amplifying circuit 1342 may amplify the ac signal into an ac signal of-8V to +8v, so as to facilitate subsequent transmission. The first filter circuit 1344 may be implemented using any type of high pass filter circuit. Low frequency noise in the audio and video signal can be removed by the first filter circuit 1344. The purpose of the first filter circuit 1344 is not much the same as the high pass filter 136 described above. The high pass filter 1344 is mainly used to retain the desired information signal in the signal passing through by high pass filtering, and to filter out the power signal, as described above, although the audio-video signal does not substantially contain the power signal, the audio-video signal may undergo a similar filtering process when passing through the high pass filter 136. And the first filter circuit 1344 is mainly used to filter some small low frequency noise from the passing information signal. The high pass filter 136 may be considered a primary filter that filters information signals that may still have some low frequency noise present therein, so that the addition of the first filter circuit 1344 may improve the signal-to-noise ratio of the information signal and improve the quality of the information signal sent to the power line.

According to an embodiment of the utility model, the input signal conversion circuit comprises a second filter circuit for filtering the second information signal.

Referring to fig. 2, a second filter circuit 1346 is also shown, which is included in the input signal conversion circuit. In addition, fig. 2 also shows that the input interfaces of the PLC chip 132 include an rx+ interface and an RX-interface, which represent that the PLC chip 132 also inputs a pair of differential signals.

The second filter circuit 1346 may be implemented using any type of high pass filter circuit. Similar to the first filter circuit 1344, low-frequency noise in the information signal can be removed by the second filter circuit 1346. The high pass filter 136 may be considered a primary filter that filters information signals that may still have some low frequency noise present therein, and thus the addition of the second filter circuit 1346 may improve the signal-to-noise ratio of the information signal and improve the quality of the information signal received from the power line.

According to an embodiment of the present utility model, the signal processing circuit 130 further includes an isolation circuit (not shown) connected to each other, wherein one end of the isolation circuit is connected to the input signal conversion circuit and the output signal conversion circuit, respectively, and the other end of the isolation circuit is connected to the high-pass filter 136, and the isolation circuit is used for electrically isolating the input signal conversion circuit and the output signal conversion circuit from the high-pass filter 136, respectively.

The isolation circuit may be connected between the signal conversion circuit 134 and the high pass filter 136 shown in fig. 1. The isolation circuit may be an isolation transformer circuit. The isolation circuit can perform the functions of isolation, lightning protection, filtering and the like, and is mainly used for isolating the information signal from the power signal, so that the circuit current on one side of the isolation circuit, which is close to the main control chip 120, is prevented from being interfered by the power signal. The magnitude of the signals on both sides of the isolation circuit (i.e., the signal input to the isolation circuit and the signal output from the isolation circuit) remain substantially unchanged.

According to an embodiment of the present utility model, the main control chip 120 is connected to the PLC chip 132 through a Medium Dependent Interface (MDI).

Referring back to fig. 1, the connection and communication between the master chip 120 and the PLC chip 132 through the MDI interface is shown. Illustratively, the bandwidth of the MDI interface may be 100M. The MDI interface is a high-speed and stable transmission interface through which information signals are transmitted, which is advantageous in providing high-stability, high-reliability, high-efficiency data transmission, and in better satisfying the transmission requirements of high-definition images/videos. Of course, the MDI interface is merely an example, and the master control chip 120 and the PLC chip 132 may be connected and communicate via any other suitable wired or wireless transmission interface.

According to an embodiment of the present utility model, the image capturing apparatus 100 may further include a WiFi AP module for connecting with a wireless station (WiFi STA) apparatus. Referring back to fig. 1, a WiFi AP module included in the image capturing apparatus 100 is shown, which is interconnected with other apparatuses through an antenna. The camera device 100 may be implemented as a wireless network hotspot by adding a WiFi AP module, and may connect with various WiFi STA devices.

Fig. 3 shows a schematic diagram of an example of using the image capturing apparatus 100 as a WiFi AP according to an embodiment of the present utility model. Referring to fig. 3, a WiFi STA device such as a mobile phone or a computer may be connected to the image capturing apparatus 100. Thus, the user can check the working condition of the image pickup device through the WIFI mode when the image pickup device 100 is nearby, and the installation detection and the fault investigation of the device are convenient. Of course, the WiFi AP module may also be used as a router, and may provide a wireless network for a user near the image capturing apparatus 100 in the case where the power line accesses the public network (i.e., the internet).

According to the embodiment of the utility model, the main control chip 120 is connected with the WiFi-AP module through a secure digital input-output interface or a universal serial bus interface.

For example, the main control chip 120 may be connected to the WIFI AP module through a (Secure Digital Input and Output, SDIO) or universal serial bus (Universal Serial Bus, USB) interface to implement the function of the WIFI AP.

According to an embodiment of the present utility model, the image capturing apparatus 100 further includes: the power supply circuit 140 is configured to be connected to a power line, and configured to extract a power signal from a power line transmission signal from the power line, and transmit the power signal to a load.

Referring back to fig. 1, a power supply circuit 140 is shown. The power signal may be extracted from the power line transmission signal by the power supply circuit 140 to power the load. The load may be any load including, but not limited to, individual modules or circuits in the image capturing apparatus 100.

According to an embodiment of the present utility model, the power supply circuit 140 includes a transformer circuit and a low-pass filter connected to each other, the transformer circuit is used for being connected to a load, and the low-pass filter is used for being connected to a power line; the low-pass filter is used for extracting a power signal from the power line transmission signal; the transformation circuit is used for converting the power signal from alternating current to direct current and transmitting the power signal of the direct current to the load.

Referring back to fig. 1, the power supply circuit 140 is shown to include a transformer circuit, shown as an ac-dc transformer circuit, i.e., ACDC transformer circuit, and a low pass filter. For example, the power signal may be a 220V ac signal, and the power line transmission signal may be low-pass filtered to extract a 220V ac signal therefrom, and the ac signal may be converted into a 5V dc signal by an ACDC voltage transformation circuit. The converted 5V dc signal may be used to provide dc power to a load.

According to an embodiment of the present utility model, the load includes one or more of the image capturing device 110, the main control chip 120, and the signal processing circuit 130, and the power supply circuit 140 is connected to a power input terminal of one or more of the image capturing device 110, the main control chip 120, and the signal processing circuit 130.

When a module (including a chip) or a circuit is in operation, a certain power voltage, for example, 3.3V, 5V, 12V, etc. is often required to be input, and a power signal extracted by the power supply circuit 140 may be input to a power input end of each module or circuit to supply power to the module or circuit. In this way, the image pickup apparatus 100 can transmit an information signal using the power line while also being able to supply power to itself using the power line. Therefore, the image capturing apparatus 100 does not need to be externally connected with a power supply apparatus, so that the image capturing apparatus 100 has higher integration level, stronger function and better user experience.

According to another aspect of the present utility model, a camera system is provided. The camera system includes: one or more of the above-described image pickup apparatuses 100; and the power line-to-wire module is used for being connected with the power line and the wire network respectively.

Fig. 4 shows a schematic diagram of a camera system 400 according to an embodiment of the utility model. As shown in fig. 4, a plurality of image pickup apparatuses, that is, an image pickup apparatus 1, an image pickup apparatus 2, an image pickup apparatus 3 … … image pickup apparatus N, are shown.

According to the actual use requirement and the definition condition of the image sensor, a plurality of image pickup devices can be mounted on the power line. For example, assuming that the power line communication is a bandwidth of 30M, it can be used simultaneously by 15 image pickup apparatuses of bandwidth 2M. Referring to fig. 4, a PLC to wire module is also shown connected to the power line. Through the PLC to wire module, the power line can be connected to the public network. Thus, when the wired network is erected later, the camera system can be conveniently and flexibly connected to the public network, so that the information signals of the image pickup equipment can be further uploaded to the public network through the power line and the PLC to wire module, or the information signals can be downloaded from the public network to the image pickup equipment. In addition, as described above, in the case where the power line is connected to the public network, the image capturing apparatus can further provide a wireless network for a nearby user in cooperation with the WiFi AP module.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.

The above description is merely illustrative of the embodiments of the present utility model and the protection scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and the changes or substitutions are covered by the protection scope of the present utility model. The protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. The image pickup device is characterized by comprising an image acquisition device, a main control chip and a signal processing circuit, wherein the image acquisition device is connected with the main control chip, a first end of the signal processing circuit is used for being connected with a power line, and a second end of the signal processing circuit is connected with the main control chip;

the main control chip is used for acquiring the audio and video signals acquired by the image acquisition device and sending the audio and video signals to the signal processing circuit;

the signal processing circuit is used for converting the audio and video signals into first information signals meeting the power transmission requirement and sending the first information signals to the power line for transmission; and the device is used for receiving a second information signal transmitted through the power line, converting the second information signal into a control signal which can be identified by the main control chip and sending the control signal to the main control chip.

2. The image capturing apparatus according to claim 1, wherein the signal processing circuit includes a power line communication chip, an input signal conversion circuit, an output signal conversion circuit, and a high pass filter; one end of the input signal conversion circuit is connected with the high-pass filter, the other end of the input signal conversion circuit is connected with the power line communication chip, one end of the output signal conversion circuit is connected with the high-pass filter, the other end of the output signal conversion circuit is connected with the power line communication chip, the power line communication chip is also connected with the main control chip, and the high-pass filter is used for being connected with the power line;

the power line communication chip is used for modulating the audio and video signals from the main control chip, transmitting the modulated audio and video signals to the output signal conversion circuit, demodulating the second information signals from the input signal conversion circuit, and transmitting the control signals obtained by demodulation to the main control chip;

a high pass filter for high pass filtering a power line transmission signal from the power line to extract the second information signal from the power line transmission signal, and for high pass filtering the audio-visual signal from the output signal conversion circuit to obtain the first information signal;

the output signal conversion circuit is used for converting the modulated audio and video signals from the power line communication chip;

the input signal conversion circuit is configured to convert the second information signal from the high pass filter.

3. The image pickup apparatus according to claim 2, wherein the output signal conversion circuit includes an amplifying circuit and a first filter circuit,

the amplifying circuit is used for amplifying the modulated audio and video signals;

the first filter circuit is used for filtering the amplified audio and video signals.

4. The image pickup apparatus according to claim 2, wherein the input signal conversion circuit includes a second filter circuit,

the second filter circuit is configured to filter the second information signal.

5. The image pickup apparatus according to any one of claims 2 to 4, wherein the signal processing circuit further comprises an isolation circuit having one end connected to the input signal conversion circuit and the output signal conversion circuit, respectively, and the other end connected to the high-pass filter,

the isolation circuit is used for electrically isolating the input signal conversion circuit and the output signal conversion circuit from the high-pass filter respectively.

6. The image capturing apparatus according to any one of claims 2 to 4, wherein the main control chip and the power line communication chip are connected by a medium-dependent interface.

7. The image capturing apparatus according to any one of claims 1 to 4, further comprising a wireless access point module for connecting with a wireless station apparatus;

the main control chip is connected with the wireless access point module through a secure digital input/output interface or a universal serial bus interface.

8. The image capturing apparatus according to any one of claims 1 to 4, further comprising:

a power supply circuit for connecting with the power line, and for extracting a power signal from a power line transmission signal from the power line, and transmitting the power signal to a load;

the load comprises one or more of the image acquisition device, the main control chip and the signal processing circuit, and the power supply circuit is connected with the power input end of one or more of the image acquisition device, the main control chip and the signal processing circuit.

9. The image pickup apparatus according to claim 8, wherein the power supply circuit includes a transformer circuit and a low-pass filter connected to each other,

the transformation circuit is used for being connected with the load, and the low-pass filter is used for being connected with the power line;

the low pass filter is used for extracting the power signal from the power line transmission signal;

the transformation circuit is used for converting the power signal from alternating current to direct current and transmitting the power signal of the direct current to the load.

10. A camera system, comprising:

one or more image pickup apparatuses according to any one of claims 1 to 9; and

and the power line-to-wire module is used for being connected with the power line and the wire network respectively.

Images