Multi-interface video recorder

Abstract

The utility model discloses a multi-interface video recorder, and relates to the technical field of video processing, and the multi-interface video recorder comprises a case which is provided with a VGA interface, a PAL interface and a DVI interface; the main board is provided with a DVI / VGA video interface, a PAL video interface and a main control chip; a storage unit is further arranged in the case and connected with the main control chip. The video recorder provided by the utility model is compatible with various video systems such as PAL, VGA and DVI, and can adapt to various different video acquisition and storage requirements.

Description

Technical Field

[0001] This application relates to the field of video processing technology, and in particular to a multi-interface video recorder. Background Technology

[0002] Video recording is a primary requirement in the surveillance industry. After a camera captures a video signal, the signal undergoes a series of processing steps and is stored in a storage unit so that the video can be retrieved when needed.

[0003] Since video recording needs occur in various situations, and the video signals collected in different situations are of different formats, such as PAL, VGA and DVI, most current video recorders are designed for a specific video format, resulting in insufficient compatibility with different video formats. Utility Model Content

[0004] This application provides a multi-interface video recorder to solve the problem of insufficient compatibility of existing video recorders with different video formats.

[0005] This application provides a multi-interface video recorder, including:

[0006] The chassis is equipped with PAL, VGA and DVI interfaces.

[0007] The motherboard, located inside the chassis, features DVI / VGA and PAL video interfaces. The DVI / VGA interface includes a VGA input circuit, a VGA conversion circuit, a DVI input circuit, and a DVI conversion circuit. The input of the VGA input circuit connects to the VGA interface, and the output connects to the input of the VGA conversion circuit. The input of the DVI input circuit connects to the DVI interface, and the output connects to the input of the DVI conversion circuit. The PAL video interface includes a PAL input circuit and a PAL conversion circuit. The input of the PAL input circuit connects to the PAL interface, and the output connects to the input of the PAL conversion circuit.

[0008] The motherboard also has a main control chip with multiple input interfaces. The output of the VGA conversion circuit and the output of the DVI conversion circuit are connected to the same input interface, while the output of the PAL conversion circuit is connected to a different input interface than the VGA conversion circuit and the DVI conversion circuit.

[0009] The chassis also houses a storage unit, which is connected to the main control chip.

[0010] In one possible implementation, a power adapter is also included, and a power module is also installed inside the chassis. The power module is connected to the power adapter and the motherboard via a power cable. The power adapter converts the incoming 220V AC power to 24V DC power, and the power module converts the 24V DC power to 5V power to supply the motherboard.

[0011] In one possible implementation, the chassis is also equipped with a power interface and a power switch. The power interface is used to plug in the power adapter, and the power switch is connected between the power interface and the power module.

[0012] In one possible implementation, the chassis is also equipped with status indicator lights, including a power indicator light, a self-test indicator light, and a data acquisition indicator light, which are connected to the motherboard.

[0013] In one possible implementation, the chassis is also equipped with a control switch connected to the motherboard. The control switch includes a power control switch and an acquisition control switch. The power control switch is used to control the supply of power to the VGA interface, PAL interface and DVI interface, and the acquisition control switch is used to control the acquisition of video data from the VGA interface, PAL interface and DVI interface.

[0014] In one possible implementation, the chassis is also equipped with a debugging interface, which is used to connect to a host computer to read video data stored in the storage unit or to debug the motherboard.

[0015] In one possible implementation, the chassis is made of an aluminum alloy panel with an oxidized surface. The outer surface of the chassis is successively treated with sandblasting, golden conductive oxidation, and military green matte paint, while the inner surface of the chassis is treated with conductive golden anodizing.

[0016] In one possible implementation, the VGA conversion circuit includes a VGA video interface chip, both the DVI access circuit and the DVI conversion circuit include a DVI video interface chip, the PAL conversion circuit includes a PAL video interface chip, the VGA video interface chip and the DVI video interface chip are both model ADV7604BBCZ-5, and the PAL video interface chip is model ADV7182BCPZ.

[0017] In one possible implementation, the main control chip is model Hi3531DV200, and the storage unit uses a solid-state drive with an mSATA interface.

[0018] The multi-interface video recorder of this application has the following advantages:

[0019] It offers video recorders compatible with multiple video formats such as PAL, VGA, and DVI, which can adapt to various video acquisition and storage needs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a multi-interface video recorder provided in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the front side of a video recorder provided in an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the rear side of a video recorder provided in an embodiment of this application.

[0024] Figure 4 This is a schematic block diagram of the motherboard provided in an embodiment of this application.

[0025] Figure 5 A logic block diagram of the main control chip provided in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the video interface provided in the embodiments of this application.

[0027] Figure 7 The VGA access circuit for the DVI / VGA video interface provided in the embodiments of this application.

[0028] Figure 8 The VGA conversion circuit for the DVI / VGA video interface provided in the embodiments of this application.

[0029] Figure 9 The DVI access circuit for the DVI / VGA video interface provided in the embodiments of this application.

[0030] Figure 10 The DVI conversion circuit for the DVI / VGA video interface provided in the embodiments of this application.

[0031] Figure 11 The PAL access circuit for the PAL video interface provided in the embodiments of this application.

[0032] Figure 12 The PAL conversion circuit for the PAL video interface provided in the embodiments of this application.

[0033] The following are the reference numerals: 100, chassis; 110, power supply interface; 120, debugging interface; 130, status indicator light; 140, control switch; 200, handle. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Figure 1-12 This application provides a structural and circuit diagram of a multi-interface video recorder. The application provides a multi-interface video recorder, including:

[0036] Chassis 100, which is equipped with PAL interface, VGA interface and DVI interface;

[0037] The motherboard, located inside the chassis 100, has DVI / VGA and PAL video interfaces. The DVI / VGA video interface includes a VGA access circuit, a VGA conversion circuit, a DVI access circuit, and a DVI conversion circuit. The input of the VGA access circuit is connected to the VGA interface, and the output of the VGA access circuit is connected to the input of the VGA conversion circuit. The input of the DVI access circuit is connected to the DVI interface, and the output of the DVI access circuit is connected to the input of the DVI conversion circuit. The PAL video interface includes a PAL access circuit and a PAL conversion circuit. The input of the PAL access circuit is connected to the PAL interface, and the output of the PAL access circuit is connected to the input of the PAL conversion circuit.

[0038] The motherboard also has a main control chip with multiple input interfaces. The output of the VGA conversion circuit and the output of the DVI conversion circuit are connected to the same input interface, while the output of the PAL conversion circuit is connected to a different input interface than the VGA conversion circuit and the DVI conversion circuit.

[0039] The chassis 100 also contains a storage unit, which is connected to the main control chip.

[0040] For example, the chassis 100 is made of aluminum alloy panel, the surface of the aluminum alloy panel is oxidized, the outer surface of the chassis 100 is successively treated with sandblasting, golden conductive oxidation and military green baking paint matte finish, and the inner surface of the chassis 100 is treated with conductive golden anodizing.

[0041] Furthermore, for high-power devices on the motherboard, such as the main control chip, the heat from these devices will be conducted to the chassis 100, improving heat dissipation efficiency. In addition, a handle 200 is provided on the top of the chassis 100 for easy carrying of the video recorder in this embodiment.

[0042] In the embodiments of this application, when the video recorder is powered on, it will first perform a self-test. Only after the self-test is completed can it begin to acquire VGA, DVI, and PAL video signals. The input interfaces on the motherboard that connect to the VGA, DVI, and PAL interfaces can all use connectors of model HJ30J-100ZKN.

[0043] Furthermore, in this embodiment of the application, there are three VGA interfaces and three DVI interfaces, while there are two PAL interfaces. The VGA interface allows input of video with a resolution of 1024×768 and a refresh rate of 60Hz, the DVI interface allows input of video with a resolution of 1280×1024 and a refresh rate of 60Hz, and the PAL interface allows input of video with a resolution of 720×576 and a refresh rate of 25 frames / second.

[0044] It should be understood that the VGA, DVI, and PAL interfaces in this application embodiment support signal input of various different resolutions. Before inputting video, the resolution of the video signal can be set and modified in the user interface so that each interface can adapt to the resolution of the actual input video.

[0045] In one possible embodiment, a power adapter is also included. A power module is also provided inside the chassis 100. The power module is connected to the power adapter and the motherboard via a power cord. The power adapter converts the incoming 220V AC power into 24V DC power, and the power module converts the 24V DC power into 5V power to supply the motherboard.

[0046] For example, a battery can also be installed inside the chassis 100, with the 24V DC output from the battery providing power to the power module, which in turn supplies power to the motherboard. After installing the battery, its power supply terminal can be connected to a power adapter to charge the battery using the 24V DC output from the power adapter.

[0047] Furthermore, the chassis 100 is also equipped with a power interface 110 and a power switch. The power interface 110 is used to plug in the power adapter, and the power switch is connected between the power interface 110 and the power module.

[0048] A J30J-9ZKN-J connector can be used between the motherboard and power interface 110. The power module includes a power board and a power isolation module mounted on the power board. This power isolation module is a Mornsun VRB2405YMD-50WHR3 module, and its characteristics are as follows:

[0049] Wide input voltage range 18-36V;

[0050] Output power 50W;

[0051] Efficiency up to 91%;

[0052] Isolation voltage 1500VDC;

[0053] Input undervoltage protection; output short circuit, overcurrent, and overvoltage protection.

[0054] Operating temperature range: -40℃~+105℃;

[0055] International standard pin configuration;

[0056] Certified by EN62368.

[0057] The power board also has a secondary power supply circuit, which uses a DC-DC switching power supply converter to convert the 5V power output from the power isolation module into voltages such as 3.3V, 1.8V, 1.5V, 1.2V, and 1.0V.

[0058] In one possible embodiment, the chassis 100 is also provided with status indicator lights 130, which include a power indicator light, a self-test indicator light, and a data acquisition indicator light, and the status indicator lights 130 are respectively connected to the motherboard.

[0059] For example, all status indicator lights 130 are LEDs, and a connector of model J30J-15ZKN-J can be used between the motherboard and the status indicator lights 130. When the power is connected and the power switch is turned on, the power indicator light will be solid green. After a normal self-test, the self-test indicator light will be solid green for 5 seconds. If the self-test fails, the self-test indicator light will be solid red. During normal video acquisition, the self-test indicator light will also flash green at a frequency of 1Hz. There are three acquisition indicator lights, which are used to indicate the video acquisition status of two PAL video interfaces, two DVI / VGA video interfaces, and one DVI / VGA video interface, respectively.

[0060] Specifically, when the PAL video interface of channel 1 is acquiring data normally, the corresponding acquisition indicator light flashes green at a frequency of 1Hz. When the PAL video interface of channel 2 is acquiring data normally, the corresponding acquisition indicator light flashes green at a frequency of 2Hz. When the PAL video interfaces of both channels are acquiring data simultaneously, the corresponding acquisition indicator light flashes green at a frequency of 4Hz. If no PAL video interface is acquiring data, the corresponding acquisition indicator light turns off.

[0061] Furthermore, when the 3-channel DVI / VGA video interface is acquiring data normally, the corresponding acquisition indicator light flashes green at a frequency of 1Hz. When the 4-channel DVI / VGA video interface is acquiring data normally, the corresponding acquisition indicator light flashes green at a frequency of 2Hz. When the two channels of DVI / VGA video interface are acquiring data simultaneously, the corresponding acquisition indicator light flashes green at a frequency of 4Hz. If no DVI / VGA video interface is acquiring data, the corresponding acquisition indicator light turns off.

[0062] Furthermore, when the 5-channel DVI / VGA video interface is acquiring data normally, the corresponding acquisition indicator light flashes green at a frequency of 1Hz. If the DVI / VGA video interface is not acquiring data, the corresponding acquisition indicator light will turn off.

[0063] In one possible embodiment, the chassis 100 is further provided with a control switch 140, which is connected to the motherboard. The control switch 140 includes a power control switch and an acquisition control switch. The power control switch is used to control the supply of power to the VGA interface, PAL interface and DVI interface, and the acquisition control switch is used to control the acquisition of video data from the VGA interface, PAL interface and DVI interface.

[0064] For example, all control switches 140 are toggle switches, and a connector of model J30J-15ZKN-J can be used between the motherboard and the control switches 140. After the motherboard self-test is completed and the result is normal, the power control switch can be turned on, and the acquisition control switches corresponding to all interfaces that need to acquire video data can be turned on. Then, the acquisition and storage of video data will start automatically.

[0065] In one possible embodiment, the chassis 100 is also provided with a debugging interface 120, which is used to connect to a host computer to read video data stored in the storage unit or to debug the motherboard.

[0066] For example, video data can be exported through the debugging interface, and debugging tools can be used for debugging, software upgrades, and other tasks.

[0067] The main control chip in this embodiment has a GMAC interface and supports RGMII and MII modes. An external Gigabit Ethernet PHY can be connected to implement a Gigabit Ethernet interface.

[0068] The PHY interface uses the RTL8211FI-CG, a fully integrated tri-speed (10BASE-T / 100BASE-TX / 1000BASE-T) Ethernet physical layer transceiver used to send and receive data over standard CAT-5 unshielded twisted pair (UTP) cable.

[0069] The RTL8211FI-CG provides diagnostic functions to facilitate system startup and debugging during production testing and product deployment. The main control chip in this embodiment supports a parameterized NAND tree, facilitating the detection of faults between the RTL8211FI-CG I / O and the motherboard. LinkMD's TDR-based cable diagnostics can identify faulty copper cabling. Remote and local loopback functions can verify analog and digital data paths.

[0070] In one possible embodiment, the VGA conversion circuit includes a VGA video interface chip, the DVI access circuit and the DVI conversion circuit both include a DVI video interface chip, the PAL conversion circuit includes a PAL video interface chip, the VGA video interface chip and the DVI video interface chip are both model ADV7604BBCZ-5, and the PAL video interface chip is model ADV7182BCPZ.

[0071] For example, the main control chip is model Hi3531DV200, and the storage unit uses a solid-state drive with an mSATA interface.

[0072] The Hi3531DV200 is a new generation of professional SoC chip developed for multi-channel HD / Ultra-HD (1080p / 4M / 5M / 4K) DVR applications. The Hi3531DV200 integrates an ARM A53 quad-core processor and a powerful neural network inference engine, supporting various intelligent algorithm applications. Simultaneously, the Hi3531DV200 integrates multiple MIPID-PHY interface inputs, breaking through the performance bottleneck of digital interface video input and providing twice the video input capability of its predecessor. Furthermore, the H.265 video codec engine and video image processing algorithms have been further improved in terms of effect and performance. Combined with rich peripheral devices and high-speed interfaces, this SoC chip provides a high-performance, high-quality analog HD DVR solution, widely used in the analog HD surveillance market and automotive DVR market.

[0073] The main technical features of this main control chip are as follows:

[0074] Processor core:

[0075] ARM Cortex A53 quad-core @ 1.15GHz;

[0076] 32KB L1 I-Cache, 32KB L1 D-Cache;

[0077] 256KB L2 Cache;

[0078] Supports NEON / FPU;

[0079] Multi-protocol video encoding and decoding;

[0080] H.264 Baseline / Main / High Profile, Level 4.2 encoding;

[0081] MJPEG / JPEG Baseline encoding and decoding;

[0082] Regarding video input interfaces, the main control chip supports eight MIPI PHY interfaces and one BT1120 video cascading interface. Each MIPI interface can be reused as an 8-bit BT656 interface.

[0083] Regarding video output interfaces, the main control chip supports one HDMI 1.4 high-definition output interface with a maximum output resolution of 3840x2160@60fps; and one VGA high-definition output interface with a maximum output resolution of 2560x1600@60fps. A user interface can be output through the video output interfaces, allowing users to configure the required input interfaces in the DVI / VGA video interfaces.

[0084] In terms of network interfaces, the main control chip has two Gigabit Ethernet interfaces.

[0085] In terms of memory interfaces, the main control chip has two 32-bit DDR4 / DDR3 interfaces, an SD / MMC interface, a SPINOR / NAND Flash interface, and four SATA3.0 / PCIe 2.0 multiplexed interfaces.

[0086] The HiSilicon Hi3531DV200 video input interface supports 4 BT1120 interfaces, which can be configured as 3 BT1120 interfaces + 2 BT656 interfaces. If you need to convert DVI / VGA video signals to BT1120 interfaces and PAL video signals to BT656 interfaces, you need to select the appropriate video interface chip to complete the conversion.

[0087] Only one of the DVI and VGA signal sources can be used at a time in the same interface. The interface type can be configured through the user interface. After the user modifies the configuration parameters in the user interface, a corresponding configuration file will be generated. The main control chip can obtain the selection of DVI and VGA signal sources and the configuration of video signal resolution by parsing the configuration file.

[0088] The ADV7604 is a high-quality, single-chip, multi-format video decoder graphics digitizer capable of converting DVI / VGA video data. This device integrates a dual-input HDMI 1.4 compatible receiver, supporting all high-definition television formats up to 1080p, with a maximum display resolution of UXGA (1600×1200, 60Hz). It supports graphics digitization, capable of digitizing RGB graphics signals from VGA to UXGA rates, converting them into digital RGB or YCbCr pixel output streams. Furthermore, one graphics port is equipped with an internal EDID.

[0089] The ADV7182 chip enables PAL video data reception, automatically detecting standard analog baseband video signals compatible with global NTSC, PAL, and SECAM standards, and converting them into a 4:2:2 component video data stream. This video data stream is compatible with the 8-bit ITU-R BT656 interface standard.

[0090] The ADV7182, when used with an external resistor divider, provides a 4V common-mode input range, eliminating large-signal and common-mode transients on video lines. This device achieves up to 80dB of common-mode rejection (CMR) without the need for external amplifier circuitry. Automatic gain control (AGC) and clamp reset circuitry enable a peak-to-peak input video signal range of up to 1.0V at its analog video input pins. Even with line length deviations of ±5%, the line-locked clock output allows for synchronous, asynchronous, or line-locked output data rates, timing signals, and output clock signals. The ADV7182 can convert these analog video formats to 8-bit ITU-R BT.656 digital video streams.

[0091] The HiSilicon Hi3531DV200 supports external interfaces such as SATA and eMMC storage interfaces. This embodiment uses the SATA interface, with mSATA selected as the SATA storage medium for easy replacement, installation, and inspection.

[0092] The storage unit uses V-Kool S100 series mSATA interface solid-state drives.

[0093] The main technical specifications of this storage unit are as follows:

[0094] Compatible with SATARevision 3.1;

[0095] Storage capacity up to 1TB;

[0096] Sequential read / write speeds are 560MB / s and 450MB / s, respectively.

[0097] Operating temperature range: -40℃~85℃.

[0098] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0099] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A multi-interface video recorder, characterized in that, include: A chassis (100) is provided with a PAL interface, a VGA interface and a DVI interface; A motherboard is located inside the chassis (100). The motherboard has a DVI / VGA video interface and a PAL video interface. The DVI / VGA video interface includes a VGA access circuit, a VGA conversion circuit, a DVI access circuit, and a DVI conversion circuit. The input terminal of the VGA access circuit is connected to the VGA interface, and the output terminal of the VGA access circuit is connected to the input terminal of the VGA conversion circuit. The input terminal of the DVI access circuit is connected to the DVI interface, and the output terminal of the DVI access circuit is connected to the input terminal of the DVI conversion circuit. The PAL video interface includes a PAL access circuit and a PAL conversion circuit. The input terminal of the PAL access circuit is connected to the PAL interface, and the output terminal of the PAL access circuit is connected to the input terminal of the PAL conversion circuit. The motherboard also has a main control chip, which has multiple input interfaces. The output of the VGA conversion circuit and the output of the DVI conversion circuit are connected to the same input interface, while the output of the PAL conversion circuit is connected to a different input interface than the VGA conversion circuit and the DVI conversion circuit. The chassis (100) is also equipped with a storage unit, which is connected to the main control chip.

2. The multi-interface video recorder according to claim 1, characterized in that, It also includes a power adapter, and the chassis (100) is also equipped with a power module. The power module is connected to the power adapter and the motherboard through a power cord. The power adapter converts the incoming 220V AC power into 24V DC power, and the power module converts the 24V DC power into 5V power to supply the motherboard.

3. A multi-interface video recorder according to claim 2, characterized in that, The chassis (100) is also provided with a power interface (110) and a power switch. The power interface (110) is used to plug in the power adapter, and the power switch is connected between the power interface (110) and the power module.

4. A multi-interface video recorder according to claim 1, characterized in that, The chassis (100) is also provided with status indicator lights (130), which include power indicator lights, self-test indicator lights and data acquisition indicator lights. The status indicator lights (130) are respectively connected to the motherboard.

5. A multi-interface video recorder according to claim 1, characterized in that, The chassis (100) is also provided with a control switch (140), which is connected to the motherboard. The control switch (140) includes a power control switch and a data acquisition control switch. The power control switch is used to control the supply of power to the VGA interface, the PAL interface and the DVI interface, and the data acquisition control switch is used to control the acquisition of video data from the VGA interface, the PAL interface and the DVI interface.

6. A multi-interface video recorder according to claim 1, characterized in that, The chassis (100) is also provided with a debugging interface (120), which is used to connect to a host computer to read the video data stored in the storage unit or to debug the motherboard.

7. A multi-interface video recorder according to claim 1, characterized in that, The chassis (100) is made of aluminum alloy panel, the surface of which is oxidized. The outer surface of the chassis (100) is successively treated with sandblasting, golden conductive oxidation and military green baking paint matte finish. The inner surface of the chassis (100) is treated with conductive golden anodizing.

8. A multi-interface video recorder according to claim 1, characterized in that, The VGA conversion circuit includes a VGA video interface chip, the DVI access circuit and the DVI conversion circuit both include a DVI video interface chip, the PAL conversion circuit includes a PAL video interface chip, the VGA video interface chip and the DVI video interface chip are both model ADV7604BBCZ-5, and the PAL video interface chip is model ADV7182BCPZ.

9. A multi-interface video recorder according to claim 1, characterized in that, The main control chip is model Hi3531DV200, and the storage unit uses a solid-state drive with an mSATA interface.

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