Multi-chip cascade system and monitoring camera equipment

Abstract

The utility model discloses a multi-chip cascade system and a monitoring camera device. The main chip is connected with the main image sensor so as to obtain an image collected by the main image sensor and code the image to generate a path of code stream. The at least one sub-chip is respectively corresponding to the at least one sub-image sensor, and each sub-chip is connected with one sub-image sensor so as to acquire an image acquired by one sub-image sensor and code the image to generate a path of code stream. The main chip is connected with the at least one sub-chip so as to obtain at least one path of code stream generated by the at least one sub-chip, and at least two paths of code streams are obtained. The plurality of chips are cascaded in one piece of monitoring camera equipment, so that the chips and the matching mode of the chips and the image sensor are flexible and selectable, the monitoring requirements of different monitoring ranges and monitoring distances can be met, and compared with the prior art, a plurality of cameras do not need to be installed, and the monitoring cost is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of security technology, and in particular to a multi-chip cascade system and a monitoring camera device. Background Art

[0002] With the development of society and the advancement of technology, surveillance cameras are increasingly in demand and widely used in daily life. People often use surveillance cameras to monitor and prevent theft. In order to expand the monitoring range or monitoring distance, current surveillance cameras often need to install multiple cameras, which is costly; or they are equipped with a single chip that supports multiple image sensors, but the encoding performance of the single chip is not strong enough, and the price of high-performance chips is too expensive. In addition, the solutions that can be implemented by the single chip are single and inflexible. Utility Model Content

[0003] The embodiments of the present application provide a multi-chip cascade system and a surveillance camera device to solve at least one of the above-mentioned technical problems.

[0004] The multi-chip cascade system of the embodiment of the present application is applied to a surveillance camera device, wherein the multi-chip cascade system includes a main chip, a main image sensor, at least one sub-chip and at least one sub-image sensor;

[0005] The main chip is connected to the main image sensor to obtain the image captured by the main image sensor and encode it to generate a code stream;

[0006] The at least one sub-chip corresponds to the at least one sub-image sensor respectively, and each sub-chip is connected to one sub-image sensor to obtain an image captured by the sub-image sensor, and encodes the image to generate a bit stream;

[0007] The main chip is connected to the at least one sub-chip to obtain at least one code stream generated by the at least one sub-chip to obtain at least two code streams.

[0008] In some embodiments, the main chip is connected to the at least one sub-chip via a USB interface, the main chip is a USB host end, and the at least one sub-chip is a USB device end.

[0009] In some embodiments, the number of the sub-chips is greater than or equal to two, the multi-chip cascade system further includes a USB hub, and the main chip is connected to at least two of the sub-chips via the USB interface and the USB hub.

[0010] In some embodiments, the main chip is connected to the at least one sub-chip via Ethernet communication.

[0011] In some embodiments, the multi-chip cascade system further includes a main dynamic random access memory and at least one sub-dynamic random access memory;

[0012] The main dynamic random access memory is connected to the main chip to cache the image captured by the main image sensor and / or a code stream generated by the main chip;

[0013] The at least one sub-dynamic random access memory corresponds to the at least one sub-chip respectively, and each sub-dynamic random access memory is connected to a sub-chip to cache an image captured by a sub-image sensor and / or a code stream generated by a sub-chip.

[0014] In some embodiments, the multi-chip cascade system further includes a memory card, which is connected to the main chip and is used for locally storing the at least two code streams.

[0015] In some embodiments, the multi-chip cascade system further includes a flash memory, which is connected to the main chip and is used to store operating programs of the main chip and the at least one sub-chip.

[0016] In some embodiments, the multi-chip cascade system further includes a network card, which is connected to the main chip and is used to send the at least two code streams to the client.

[0017] The monitoring camera device of the embodiment of the present application includes:

[0018] A multi-chip cascade system according to any one of the above embodiments;

[0019] A main lens, the main lens cooperates with the main image sensor to capture images;

[0020] At least one sub-lens, each of which corresponds to the at least one sub-image sensor, and each of which cooperates with one of the sub-image sensors to capture an image.

[0021] In some embodiments, the main lens is a wide-angle lens or a telephoto lens; and / or

[0022] The at least one sub-lens is a wide-angle lens or a telephoto lens.

[0023] In some embodiments, the monitoring camera device further includes a pan / tilt head, the main lens and the main image sensor constitute a main image acquisition unit, and the at least one sub-lens and the at least one sub-image sensor constitute at least one sub-image acquisition unit;

[0024] The pan / tilt platform is connected to the main image acquisition unit and the at least one sub-image acquisition unit, and is used to control the movement of the main image acquisition unit and the at least one sub-image acquisition unit to change the image acquisition range.

[0025] In the multi-chip cascade system and monitoring camera device of the embodiment of the present application, the main chip obtains the image captured by the main image sensor, encodes it to generate a code stream, each sub-chip obtains the image captured by the corresponding sub-image sensor, encodes it to generate a code stream, and the main chip is connected to at least one sub-chip to obtain at least one code stream generated by at least one sub-chip, thereby obtaining at least two code streams. This method cascades multiple chips in a monitoring camera device, so that the chips and the matching methods of the chips and image sensors are flexible and optional, which can meet the monitoring needs of different monitoring ranges and monitoring distances, and compared with the existing technology, there is no need to install multiple cameras, which effectively reduces the monitoring cost.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. Among them:

[0028] Figure 1 is a schematic diagram of the structure of a multi-chip cascade system including N sub-chips in certain embodiments of the present application;

[0029] Figure 2 is a schematic diagram of the structure of a multi-chip cascade system including a sub-chip in certain embodiments of the present application;

[0030] Figure 3 is a schematic diagram of the structure of a multi-chip cascade system including two sub-chips in certain embodiments of the present application;

[0031] Figure 4 It is a schematic diagram of a module of a surveillance camera device according to some embodiments of the present application;

[0032] Figure 5 It is a module schematic diagram of a monitoring camera device of certain embodiments of the present application, including a main image acquisition unit and a sub-image acquisition unit.

[0033] Description of reference numerals:

[0034] Multi-chip cascade system 100, main chip 11, sub-chip 12, main image sensor 21, sub-image sensor 22, USB hub 30, main dynamic random access memory 41, sub-dynamic random access memory 42, memory card 50, flash memory 60, network card 70, main lens 210, sub-lens 220, pan / tilt head 300, main image acquisition unit 410, sub-image acquisition unit 420, surveillance camera device 1000. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0036] See also Figures 1 to 4 The embodiment of the present application provides a multi-chip cascade system 100, which is applied to a surveillance camera device 1000. The multi-chip cascade system 100 includes a main chip 11, a main image sensor 21, at least one sub-chip 12 and at least one sub-image sensor 22. The main chip 11 is connected to the main image sensor 21 to obtain an image captured by the main image sensor 21, and encodes it to generate a code stream. At least one sub-chip 12 corresponds to at least one sub-image sensor 22, and each sub-chip 12 is connected to a sub-image sensor 22 to obtain an image captured by a sub-image sensor 22, and encodes it to generate a code stream. The main chip 11 is connected to at least one sub-chip 12 to obtain at least one code stream generated by at least one sub-chip 12, and obtain at least two code streams.

[0037] In the multi-chip cascade system 100 of the embodiment of the present application, the main chip 11 obtains the image captured by the main image sensor 21, encodes it to generate a code stream, each sub-chip 12 obtains the image captured by the corresponding sub-image sensor 22, encodes it to generate a code stream, and the main chip 11 is connected to at least one sub-chip 12 to obtain at least one code stream generated by at least one sub-chip 12, and obtains at least two code streams. This method cascades multiple chips in a monitoring camera device 1000, so that the chips and the matching methods of the chips and image sensors are flexible and optional, which can meet the monitoring needs of different monitoring ranges and monitoring distances, and compared with the existing technology, there is no need to install multiple cameras, which effectively reduces the monitoring cost.

[0038] Specifically, the main image sensor 21 and the sub-image sensor 22 can be used to collect images of different visual ranges and distances. The main chip 11 and the sub-chip 12 can respectively use chips that support single image sensors. When selecting a chip, it is necessary to consider the performance of the chip, such as resolution, frame rate, etc. The main chip 11 and the sub-chip 12 can use chips with the same performance. For example, in pursuit of performance, the main chip 11 and the sub-chip 12 can both use chips with a resolution of 4K. Of course, the main chip 11 and the sub-chip 12 can also use chips with different performances. For example, in order to reduce costs, the main chip 11 uses a chip with a resolution of 4K, and at least one sub-chip 12 uses a chip with a resolution of 1080P; or the main chip 11 uses a chip with a resolution of 1080P, and at least one sub-chip 12 uses a chip with a resolution of 4K. When the number of sub-chips 12 is greater than or equal to two, multiple sub-chips 12 can use chips with the same performance or chips with different performances. Both the main chip 11 and the sub-chip 12 run the Linux operating system, which has a wide range of hardware support and can reduce the development of hardware drivers.

[0039] During the operation of the multi-chip cascade system 100, the main image sensor 21 and the sub-image sensor 22 respectively capture images of different field of view and distance. The main chip 11 obtains the image captured by the main image sensor 21, encodes and generates a code stream, and each sub-chip 12 obtains the image captured by the corresponding sub-image sensor 22, and encodes and generates a code stream. The main chip 11 can obtain a code stream generated by each sub-chip 12, and the number of sub-chips 12 is greater than or equal to one, that is, the main chip 11 can obtain at least one code stream. It can be understood that the main chip 11 generates a code stream and obtains at least one code stream, then the main chip 11 can obtain at least two code streams. Code stream refers to the data flow used by a video file in a unit time, and the video file can be obtained by decoding the code stream. The code stream format generated by the above-mentioned main chip 11 and sub-chip 12 is H264 / H265.

[0040] When the number of the sub-chip 12 is one (eg Figure 2 As shown in FIG. 1 , the main chip 11 is connected to a sub-chip 12 to obtain a code stream generated by the sub-chip 12. When the number of sub-chips 12 is two (as shown in FIG. 1 ), the main chip 11 obtains ... Figure 3 As shown in FIG. 1 , the main chip 11 is connected to two sub-chips 12 to obtain two code streams generated by the two sub-chips 12, plus one code stream generated by the main chip 11, and the main chip 11 obtains three code streams in total. Similarly, when the number of sub-chips 12 is N (as shown in FIG. 1 ), the main chip 11 is connected to two sub-chips 12 to obtain two code streams generated by the two sub-chips 12, plus one code stream generated by the main chip 11, and the main chip 11 obtains three code streams in total. Figure 1As shown), the main chip 11 can be connected to N sub-chips 12 to obtain N code streams generated by the N sub-chips 12, plus one code stream generated by the main chip 11, the main chip 11 obtains a total of N+1 code streams.

[0041] In the related art, multiple cameras are usually installed to expand the monitoring range or monitoring distance, which is costly, difficult to install and construct, and difficult to maintain in the later stage. In the implementation mode of the present application, the monitoring camera device 1000 is equipped with a multi-chip cascade system 100, and multiple image sensors collect images of different field of view ranges and distances. Multiple chips correspondingly obtain the images collected by multiple image sensors, and encode and generate multiple code streams. In this way, the monitoring range and monitoring distance can be expanded without installing multiple camera devices 1000, which effectively reduces costs, reduces construction difficulty, and facilitates later maintenance. It has been found that the monitoring camera device 1000 using the multi-chip cascade system 100 of the implementation mode of the present application can monitor a field of view range of 180 degrees to 360 degrees or a monitoring distance of 10 meters to 20 meters.

[0042] In other related technologies, a single chip supporting multiple image sensors is used to expand the monitoring range or monitoring distance, but it is difficult to balance cost and performance when selecting chips. The performance of chips with appropriate prices usually cannot meet the application requirements, and high-performance chips are expensive. For example, a single chip supporting multiple image sensors on the market cannot support the transmission of three-way 4K resolution images, or it is expensive, or there are few chips to choose from. In addition, a single chip supporting multiple image sensors can only implement a single solution, and cannot be flexibly set to implement different solutions.

[0043] In the implementation manner of the present application, the main chip 11 and at least one sub-chip 12 are cascaded, and the main chip 11 and the sub-chip 12 can respectively use chips that only support a single image sensor, which is relatively low in price. In this way, the cost of the monitoring camera device 1000 can be reduced, and there is a better balance between price and performance; in addition, the main chip 11 and the sub-chip 12 can select chips with different performances, thereby forming different solutions, and there is a wide range of solution selection space.

[0044] See also Figures 1 to 3 In some embodiments, the main chip 11 is connected to at least one sub-chip 12 via a USB interface, the main chip 11 is a USB host end, and the at least one sub-chip 12 is a USB device end.

[0045] Specifically, the main chip 11 is connected to at least one sub-chip 12 through a USB interface, the main chip 11 is a USB host end (USB HOST), and at least one sub-chip 12 is a USB device end (USB DECIVE), so that the main chip 11 can obtain at least one code stream generated by at least one sub-chip 12 through the USB interface. Figure 2 As shown, the main chip 11 is connected to a sub-chip 12 via a USB interface, and the main chip 11 can obtain a code stream generated by a sub-chip 12 via the USB interface.

[0046] See also Figures 1 to 3 In some embodiments, the number of sub-chips 12 is greater than or equal to two, and the multi-chip cascade system 100 further includes a USB hub 30 , and the main chip 11 is connected to at least two sub-chips 12 via a USB interface and the USB hub 30 .

[0047] Specifically, the USB hub 30 is used to expand the USB interface so that the main chip 11 can be connected to at least two sub-chips 12. For example, when the number of sub-chips 12 is two (eg Figure 3 As shown in FIG. 1 , the main chip 11 and the two sub-chips 12 are connected via a USB interface and a USB hub 30. The USB hub 30 can expand one USB interface into at least two USB interfaces, so that the main chip 11 can obtain two code streams generated by the two sub-chips 12 through the USB interface. In practical applications, a suitable USB hub 30 can be selected according to the application requirements of the monitoring camera device 1000. For example, the general video bit rate is within the range of 5-10 mbps, and the theoretical transmission rate of the USB2.0 hub is 480 mbps. Therefore, the bandwidth of the USB2.0 hub fully meets the requirements, and a USB2.0 hub can be selected.

[0048] See also Figures 1 to 3 In some embodiments, the main chip 11 is connected to at least one sub-chip 12 via Ethernet communication.

[0049] Specifically, Ethernet communication has the advantages of low cost, high communication rate, strong anti-interference ability, etc., and can realize reliable communication between the main chip 11 and at least one sub-chip 12.

[0050] See also Figures 1 to 3In some embodiments, the multi-chip cascade system 100 further includes a main dynamic random access memory 41 and at least one sub-dynamic random access memory 42. The main dynamic random access memory 41 is connected to the main chip 11 to cache the image captured by the main image sensor 21 and / or a code stream generated by the main chip 11. At least one sub-dynamic random access memory 42 corresponds to at least one sub-chip 12. Each sub-dynamic random access memory 42 is connected to a sub-chip 12 to cache the image captured by a sub-image sensor 22 and / or a code stream generated by a sub-chip 12.

[0051] Specifically, the dynamic random access memory (Double Data Rate Synchronous Dynamic Random Access Memory, DDR) can be used to cache data and is a volatile memory, that is, when the monitoring camera device 1000 loses power, the data will be lost, but the read and write speed of the dynamic random access memory is relatively fast, so the dynamic random access memory can be used to temporarily store data.

[0052] The main dynamic random access memory 41 is connected to the main chip 11, and can directly cache the image captured by the main image sensor 21, or cache the code stream after the main chip 11 acquires the image and encodes to generate a code stream. The number of sub-dynamic random access memories 42 is the same as the number of sub-chips 12, and one sub-dynamic random access memory 42 is connected to one sub-chip 12. The sub-dynamic random access memory 42 can directly cache the image captured by the sub-image sensor 22, or cache the code stream after the sub-chip 12 acquires the image and encodes to generate a code stream.

[0053] See also Figures 1 to 3 In some embodiments, the multi-chip cascade system 100 further includes a memory card 50, which is connected to the main chip 11 and is used to locally store at least two code streams.

[0054] Specifically, the memory card 50 may be a non-volatile memory card, such as a Secure Digital (SD) card. The memory card 50 is connected to the main chip 11 and can store at least two code streams obtained by the main chip 11 locally.

[0055] See also Figures 1 to 3 In some embodiments, the multi-chip cascade system 100 further includes a flash memory 60 , which is connected to the main chip 11 and is used to store operating programs of the main chip 11 and at least one sub-chip 12 .

[0056] Specifically, the flash memory 60 (Flash) is used to store the operating programs of the main chip 11 and at least one sub-chip 12. When the monitoring camera device 1000 is working, the main chip 11 is started first, and the operating program is loaded from the flash memory 60 to control the main image sensor 21 to capture images, and obtain the images captured by the main image sensor 21, and encode to generate a code stream. Each sub-chip 12 obtains the corresponding operating program from the flash memory 60 through the main chip 11 through the USB interface, loads and runs, controls the corresponding sub-image sensor 22 to capture images, and obtains the images captured by the sub-image sensor 22, and encodes to generate a code stream.

[0057] See also Figures 1 to 3 In some embodiments, the multi-chip cascade system 100 further includes a network card 70, which is connected to the main chip 11 and is used to send at least two code streams to the client.

[0058] Specifically, the network card 70 is used to send at least two code streams to the client. For example, the network card 70 can be used to send at least two code streams to a mobile phone, a computer, a network video recorder (NVR), etc.

[0059] See also Figures 1 to 4 The embodiment of the present application also provides a monitoring camera device 1000. The monitoring camera device 1000 includes the multi-chip cascade system 100 of any of the above embodiments, a main lens 210 and at least one sub-lens 220. The main lens 210 works with the main image sensor 21 to capture images. At least one sub-lens 220 corresponds to at least one sub-image sensor 22, and each sub-lens 220 works with one sub-image sensor 22 to capture images.

[0060] Specifically, the monitoring camera device 1000 can be a monitoring camera. The main lens 210 works in conjunction with the main image sensor 21 to capture images. The number of sub-lenses 220 corresponds to the number of sub-image sensors 22, and each sub-lens 220 works in conjunction with a sub-image sensor 22 to capture images. The process of the lens and the image sensor working together to capture images is as follows: the lens can focus light onto the image sensor, and when the light passes through the lens and enters the image sensor, the photosensitive element in the image sensor converts photons into electrons and generates electrical signals. These electrical signals are converted into digital signals, and are processed and encoded by the chip to finally generate an image.

[0061] See also Figure 4 In some embodiments, the main lens 210 is a wide-angle lens or a telephoto lens; and / or at least one sub-lens 220 is a wide-angle lens or a telephoto lens.

[0062] Specifically, the focal length of a wide-angle lens is shorter than that of a standard lens and the viewing angle is greater than that of a standard lens, and it can be used to image objects with a larger range. The focal length of a telephoto lens is longer than that of a standard lens, and it can be used to image objects with a longer distance. The main lens 210 and the sub-lens 220 can use the same lens, for example, the main lens 210 and the sub-lens 220 both use wide-angle lenses, in which case the monitoring range of the monitoring camera device 1000 is wider; or, the main lens 210 and the sub-lens 220 both use telephoto lenses, in which case the monitoring distance of the monitoring camera device 1000 is longer. Of course, the main lens 210 and the sub-lens 220 can also use different lenses, for example, the main lens 210 uses a wide-angle lens, and at least one sub-lens 220 uses a telephoto lens; or the main lens 210 uses a telephoto lens, and at least one sub-lens 220 uses a wide-angle lens, in which case the monitoring range of the monitoring camera device 1000 is wide and the monitoring distance is long.

[0063] It should be noted that when the number of sub-lenses 220 is greater than or equal to two, the multiple sub-lenses 220 can use the same lens or different lenses, and there is no limitation here. In addition, the main lens 210 and the sub-lens 220 can also use wide-angle lenses or telephoto lenses with different focal lengths according to actual application needs to achieve the best monitoring effect.

[0064] It can be understood that in order to achieve better monitoring effects, the main lens 210 and the sub-lens 220 can also be flexibly matched with the main chip 11 and the sub-chip 12 with different performances. For example, a chip with a resolution of 4K can be used as the main chip 11, the main lens 210 uses a wide-angle lens, at least one sub-chip 12 uses a chip with a resolution of 1080P, and the corresponding sub-lens 220 uses a telephoto lens.

[0065] See also Figure 1 , Figure 4 and Figure 5 In some embodiments, the monitoring camera device 1000 further includes a pan-tilt platform 300. The main lens 210 and the main image sensor 21 form a main image acquisition unit 410, and the at least one sub-lens 220 and the at least one sub-image sensor 22 form at least one sub-image acquisition unit 420. The pan-tilt platform 300 is connected to the main image acquisition unit 410 and the at least one sub-image acquisition unit 420, and is used to control the movement of the main image acquisition unit 410 and the at least one sub-image acquisition unit 420 to change the image acquisition range.

[0066] Specifically, the pan-tilt platform 300 is connected to the main image acquisition unit 410 and at least one sub-image acquisition unit 420. A motor may be provided inside the pan-tilt platform 300 to control the movement of the main image acquisition unit 410 and at least one sub-image acquisition unit 420. For example, the main image acquisition unit 410 and at least one sub-image acquisition unit 420 may be controlled to rotate or translate in various directions such as up and down and left and right. In this way, the image acquisition range may be changed, thereby expanding the monitoring range of the monitoring camera device 1000.

[0067] In summary, in the multi-chip cascade system 100 and the monitoring camera device 1000 of the embodiment of the present application, the main chip 11 obtains the image captured by the main image sensor 21, encodes it to generate a code stream, each sub-chip 12 obtains the image captured by the corresponding sub-image sensor 22, encodes it to generate a code stream, and the main chip 11 is connected to at least one sub-chip 12 to obtain at least one code stream generated by at least one sub-chip 12, and obtains at least two code streams. This method cascades multiple chips in a monitoring camera device 1000, so that the chips and the matching methods of the chips and image sensors are flexible and optional, which can meet the monitoring needs of different monitoring ranges and monitoring distances, and compared with the existing technology, there is no need to install multiple cameras, which effectively reduces the monitoring cost.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0069] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific processes and examples of materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present application have been shown and described above, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A multi-chip cascade system, characterized in that: Applied to surveillance camera equipment, the multi-chip cascade system includes a main chip, a main image sensor, at least one sub-chip and at least one sub-image sensor; The main chip is connected to the main image sensor to obtain the image captured by the main image sensor and encode it to generate a code stream; The at least one sub-chip corresponds to the at least one sub-image sensor respectively, and each sub-chip is connected to one sub-image sensor to obtain an image captured by the sub-image sensor, and encodes the image to generate a bit stream; The main chip is connected to the at least one sub-chip to obtain at least one code stream generated by the at least one sub-chip to obtain at least two code streams.

2. The multi-chip cascade system according to claim 1, characterized in that: The main chip is connected to the at least one sub-chip via a USB interface, the main chip is a USB host end, and the at least one sub-chip is a USB device end.

3. The multi-chip cascade system according to claim 2, characterized in that: The number of the sub-chips is greater than or equal to two, the multi-chip cascade system further includes a USB hub, and the main chip is connected to at least two of the sub-chips via the USB interface and the USB hub.

4. The multi-chip cascade system according to claim 1, characterized in that: The main chip is connected to the at least one sub-chip via Ethernet communication.

5. The multi-chip cascade system according to claim 1, characterized in that: The multi-chip cascade system also includes a main dynamic random access memory and at least one sub-dynamic random access memory; The main dynamic random access memory is connected to the main chip to cache the image captured by the main image sensor and / or a code stream generated by the main chip; The at least one sub-dynamic random access memory corresponds to the at least one sub-chip respectively, and each sub-dynamic random access memory is connected to a sub-chip to cache an image captured by a sub-image sensor and / or a code stream generated by a sub-chip.

6. The multi-chip cascade system according to claim 1, characterized in that: The multi-chip cascade system further includes a memory card, which is connected to the main chip and is used for locally storing the at least two code streams.

7. The multi-chip cascade system according to claim 1, characterized in that: The multi-chip cascade system further includes a flash memory, which is connected to the main chip and is used to store operating programs of the main chip and the at least one sub-chip.

8. The multi-chip cascade system according to claim 1, characterized in that: The multi-chip cascade system further includes a network card, which is connected to the main chip and is used to send the at least two code streams to the client.

9. A surveillance camera device, characterized in that: include: The multi-chip cascade system according to any one of claims 1 to 8; A main lens, the main lens cooperates with the main image sensor to capture images; At least one sub-lens, each of which corresponds to the at least one sub-image sensor, and each of which cooperates with one of the sub-image sensors to capture an image.

10. The monitoring camera device according to claim 9, characterized in that: The main lens is a wide-angle lens or a telephoto lens; and / or The at least one sub-lens is a wide-angle lens or a telephoto lens.

11. The monitoring camera device according to claim 9, characterized in that: The monitoring camera device further comprises a pan / tilt head, the main lens and the main image sensor constitute a main image acquisition unit, and the at least one sub-lens and the at least one sub-image sensor constitute at least one sub-image acquisition unit; The pan / tilt platform is connected to the main image acquisition unit and the at least one sub-image acquisition unit, and is used to control the movement of the main image acquisition unit and the at least one sub-image acquisition unit to change the image acquisition range.

Images