Remote control and transmission device for multiple high-frame-rate cameras

Abstract

The invention discloses a remote control and transmission device for multiple high-frame-rate cameras, and belongs to the technical field of high-frame-rate camera control. Aiming at the problem that a plurality of high-frame-rate cameras cannot be controlled and transmit data through the same terminal, the invention provides a remote control and transmission device for a plurality of high-frame-rate cameras, which comprises a control module and a data transmission module which are arranged corresponding to each high-frame-rate camera and are connected with the high-frame-rate camera, the data transmission equipment is connected with each data transmission module; and the transfer equipment is connected with each control module, the data transmission equipment and the terminal, and the transfer equipment is used for receiving an instruction of the terminal, sending the instruction to the control module connected with the corresponding high-frame-rate camera, receiving data of the data transmission equipment and sending the data to the terminal. According to the invention, more than 32 high-frame-rate cameras can be connected at one time, remote control can be realized in a wireless or wired communication mode, video data can be returned in real time, the transmission rate is high, transmission is stable, expansion can be realized according to needs, and the practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of high frame rate camera control, and in particular to a remote control and transmission device for multiple high frame rate cameras. Background Art

[0002] As a front-end recording device, the amount of data transmitted by a high frame rate camera is several times that of a traditional camera. The transmission rate of a single high frame rate camera also requires a medium of more than 100 megabits to transmit back. Traditional camera transmission can generally be carried out through Bluetooth, WIFI or USB for data transmission, but this method cannot simultaneously perform long-distance effective data transmission for multiple high frame rate cameras. For traditional transmission methods, the situation is as follows:

[0003] (1) Bluetooth connection

[0004] Bluetooth connection is a short-range wireless communication protocol with the characteristics of small size, low cost, and non-directionality. Communication between Bluetooth devices requires discovery, pairing, and connection stages, and the transmission of files, pictures, and other data is achieved through the SDP service discovery protocol and the OBEX object exchange protocol. However, Bluetooth connection has the following limitations when transmitting high frame rate camera data:

[0005] 1) Bandwidth limitation: The bandwidth of Bluetooth connection is relatively low. The large amount of data generated by high frame rate cameras requires higher bandwidth to transmit, and Bluetooth connection may not meet this demand. Even if a newer Bluetooth version such as Bluetooth 5.0 or higher is used, its bandwidth may still not be enough to support the data transmission of high frame rate cameras.

[0006] 2) Signal stability: Bluetooth signals are easily affected by physical obstacles and interference sources, such as walls, other wireless devices, etc. This will cause instability in signal transmission, which in turn affects the rate and quality of data transmission. In high frame rate camera data transmission, any signal instability may cause data loss or transmission errors.

[0007] 3) Latency issue: The latency of Bluetooth connection is relatively high, especially when transmitting large amounts of data. This is a serious problem for high frame rate cameras that require real-time transmission, as the latency may cause the image to freeze or become out of sync.

[0008] (2) WIFI connection

[0009] WIFI connection is a wireless LAN technology that allows electronic devices such as smartphones, computers, cameras, etc. to connect to the Internet via radio waves without the need for network cables. However, when using WIFI to connect multiple high-frame rate cameras or for long-distance transmission, some problems may occur.

[0010] 1) Regarding connecting multiple high frame rate cameras, the bandwidth and capacity of the WIFI network is limited. High frame rate cameras usually generate a large amount of data, which needs to be transmitted over the network. When multiple high frame rate cameras are connected to the same WIFI network at the same time, they share the limited network bandwidth, which may result in slower data transmission speeds and even unstable or disconnected connections.

[0011] 2) The transmission distance and stability of WIFI signals are affected by many factors, including obstacles, signal interference, and the transmission power of the device. When transmitting over long distances, the WIFI signal will gradually attenuate, and the attenuation will be more obvious when encountering obstacles. This may cause the signal quality to deteriorate and fail to meet the requirements of high frame rate cameras for data transmission speed and stability. In addition, other wireless devices such as wireless phones may also interfere with the WIFI signal, further affecting the transmission quality of the signal.

[0012] Therefore, when connecting multiple high-frame rate cameras or transmitting over long distances, WIFI connections may be limited by factors such as network bandwidth, signal attenuation, and interference.

[0013] (2) USB connection

[0014] USB connection is a widely used connection standard between computers and external devices, with the following characteristics:

[0015] 1) Universality: USB is a global standard that is supported by almost all computers and consumer electronic devices, making it a widely used connection standard.

[0016] 2) Ease of use: The USB interface supports hot plugging, and users can plug or unplug USB devices at any time without restarting the computer. In addition, the USB connection is automatically recognized and no manual configuration is required.

[0017] 3) High speed: The USB standard provides a variety of speed options, including USB 2.0, USB 3.0, USB 3.1 and USB3.2, which can meet the high-speed data transmission requirements of different applications.

[0018] However, USB connections have limitations when transferring high frame rate camera data over long distances for the following reasons:

[0019] 1) Signal attenuation: USB signals will be attenuated during transmission, especially when the cable is too long. Signal attenuation will lead to a decrease in data transmission rate, thus affecting the performance of high frame rate cameras.

[0020] 2) Increased resistance: Long cables increase resistance, causing the voltage of the USB device to decrease. Insufficient voltage will affect the stability of signal transmission, which in turn affects the data transmission rate and the frame rate of the camera.

[0021] 3) Bandwidth limitation: The bandwidth of USB interface is limited, especially the USB 2.0 standard. The large amount of data generated by high frame rate cameras requires higher bandwidth to transmit, and USB 2.0 may not be able to meet this demand. Even if USB 3.0 or higher is used, if the cable is too long or of poor quality, it may lead to insufficient bandwidth.

[0022] In summary, although Bluetooth connection, WIFI connection and USB connection have many advantages, they have limitations when transmitting high frame rate camera data over long distances. Summary of the invention

[0023] In order to solve the problem that multiple high frame rate cameras cannot be controlled and data transmitted through the same terminal, the present invention provides a remote control and transmission device that can connect more than 32 high frame rate cameras at a time, and can be remotely controlled through wireless or wired communication, and video data can be transmitted back in real time. At the same time, the transmission rate is high, the transmission is stable, and it can be expanded as needed, with high practicality.

[0024] The embodiment of the present application provides a remote control and transmission device for multiple high frame rate cameras, including:

[0025] A control module and a data transmission module are arranged corresponding to and connected to each high frame rate camera, wherein the control module is used to control the operation of the high frame rate camera, and the data transmission module is used to transmit data of the high frame rate camera;

[0026] A data transmission device, the data transmission device is connected to each of the data transmission modules via wireless;

[0027] A transfer device, which is connected to each of the control modules, the data transmission device and the terminal via wired or wireless means, and is used to receive instructions from the terminal and send them to the control module connected to the corresponding high frame rate camera, and to receive data from the data transmission device and send them to the terminal.

[0028] In some embodiments, the data transmission device is arranged corresponding to the transfer device, and the control module and the data transmission module connected to the same high frame rate camera are respectively connected to the transfer device and the data transmission device corresponding to the transfer device.

[0029] In some embodiments, the transfer device is connected to at least 32 of the control modules, and the data transmission device is connected to at least 32 of the data transmission modules.

[0030] In some embodiments, the transfer device performs data verification, data caching, data reorganization, and data compression / decompression on the data received from the data transmission device in sequence, and then sends it to the terminal.

[0031] In some embodiments, the control module includes a video encoding unit, a first main control unit, and a first Beidou positioning unit;

[0032] The video encoding unit is used to obtain the video data of the high frame rate camera, and encode and compress the video data to convert it into a video stream that can be played on the network;

[0033] The first main control unit is used for controlling the video stream / data stream and driving and managing various hardware interfaces;

[0034] The first Beidou positioning unit is used to obtain geographic location information and time synchronization information;

[0035] The data transmission module includes a first wireless transmission unit, which is used for wireless connection and data transmission and has a channel control function.

[0036] In some embodiments, the data transmission device includes a second wireless transmission unit, a second main control unit, and a second Beidou positioning unit;

[0037] The second wireless transmission unit is used for wireless connection and data transmission, and has a channel control function;

[0038] The second main control unit is used for configuring and managing the second wireless transmission unit;

[0039] The second Beidou positioning unit is used to obtain geographic location information and time synchronization information;

[0040] The transfer device includes a video output unit, which realizes the network node, camera node position, status display, and realizes the preview, command control, video transmission, and playback of each camera video.

[0041] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the records in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A block diagram of the present invention. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0045] like Figure 1 As shown, an embodiment of the present application provides a remote control and transmission device for multiple high frame rate cameras, including multiple control modules, multiple data transmission modules, data transmission equipment and transfer equipment.

[0046] The control module and the data transmission module are arranged corresponding to and connected to each high frame rate camera, that is, each high frame rate camera is connected to a control module and a data transmission module.

[0047] The control module is used to control the operation of the high frame rate camera, that is, various control and data transmission operations, such as but not limited to camera switch, retrieving camera status, shutter, and changing camera settings.

[0048] The data transmission module is used to transmit the data of the high frame rate camera, that is, the massive video data. The data transmission module can transmit continuously, or after receiving the transmission instruction, it can transmit in response to the transmission instruction. For example, the control module receives the transmission instruction and controls the high frame rate camera to transmit data through the corresponding data transmission module.

[0049] The data transmission equipment is connected to each data transmission module via wireless to ensure stable long-distance wireless transmission of massive video data. Wireless connection does not require wiring, is easy to set up, and has low requirements for the spatial layout of devices within the signal range. The data transmission equipment is connected to each data transmission module via wireless to facilitate the connection with high frame rate cameras that are installed in scattered, long distances, and irregular locations.

[0050] In order to ensure stable and efficient communication, the device adopts an adaptive idle channel search and synchronization method to solve the problem of efficient use of channel resources. The adaptive idle channel search and synchronization method is responsible for detecting available frequencies in a specific frequency set. By continuously scanning and monitoring the spectrum environment, it detects and identifies the frequencies that are currently idle, that is, they are not occupied by other devices or seriously interfered with. Based on the detection and search data, networking synchronization is achieved to ensure that all nodes in the entire wireless communication network work together. In the adaptive idle channel search and synchronization method, search synchronization technology is used to solve the problem of node access to the network and ensure that newly added nodes can quickly and accurately establish communication links with other nodes. Through precise clock synchronization and channel search allocation mechanism, search synchronization technology can ensure that all nodes communicate at the same frequency and time, thereby further improving the reliability and stability of communication.

[0051] In addition, each data transmission module is connected to the transfer device through the data transmission device, so that the transfer device can be located outside the wireless signal area to receive the video data of the high frame rate camera, extending the distance between the transfer device and the high frame rate camera, thereby realizing the terminal's long-distance control of multiple high frame rate cameras and video data reception, while ensuring transmission efficiency and transmission stability.

[0052] The transfer device is connected to each control module, data transmission device and terminal via wired or wireless. The transfer device is used to receive instructions from the terminal and send them to the control module connected to the corresponding high frame rate camera, thereby realizing the control of the high frame rate camera, and the transfer device also receives data from the data transmission device and sends it to the terminal.

[0053] In one embodiment, the processing of the transfer device includes:

[0054] 1) Data reception. The relay device first receives the video data from the data transmission device. These data are transmitted in the form of specific data packets, each of which contains a part of the video data and related metadata.

[0055] 2) Data verification. After receiving a specific data packet, the transfer device will verify it to ensure the integrity and accuracy of the data, prevent data loss or errors during data transmission, and thus ensure the quality of the video data.

[0056] 3) Data cache. Specific data packets that have passed the verification will be temporarily stored in the cache of the transit device to smooth the data flow and avoid data loss or delay caused by large changes in data transmission rate.

[0057] 4) Data reorganization: If the video data is divided into multiple specific data packets for transmission, the transit device will reassemble these data packets into a complete video stream according to a specific algorithm, so as to quickly restore the original format of the video data for subsequent rapid processing and transmission.

[0058] 5) Data compression / decompression. The transfer device may compress or decompress the video data as needed. Compression can reduce the size of the data and reduce the transmission bandwidth occupancy; while decompression is to restore the original format of the data so that it can be played or stored on the terminal, which is used to optimize data transmission efficiency and storage space.

[0059] 6) Data transmission. After the above processing, the transfer device will regenerate the specific data packet to the control terminal via wired or wireless means. It is used to deliver the processed video data to the terminal for fast playback, storage or analysis.

[0060] Through the above processing flow, the relay device can ensure the integrity, accuracy, security and efficiency of the received video data, thereby realizing long-distance control and video data reception of multiple high frame rate cameras.

[0061] In order to ensure the efficiency of control and transmission, the camera control modules are grouped according to unified classification identification, with 4 devices in a group, divided into four groups: A, B, C, and D, and the devices in each group are numbered 1, 2, 3, and 4. This grouping method helps to simplify management and facilitate time division multiplexing. According to the grouping of camera control modules, a time division multiplexing scheme is designed to allocate each time slot to devices in different groups. For example, the first time slot is allocated to devices in group A, the second time slot is allocated to devices in group B, and so on. In each time slot, the four devices in the group can take turns to transmit data or send control instructions.

[0062] In order to ensure transmission efficiency, the time slot length and transmission rate in the time division multiplexing scheme are adopted. The time slot length is determined according to the data transmission requirements and response time of the device to ensure that the device can complete data transmission or receive control instructions within the specified time. At the same time, in order to ensure that the transmission rate is as high as possible, shorten the transmission time and reduce network congestion, the time slot allocation can be dynamically adjusted according to the network status and device requirements. Network congestion can be prevented by adjusting the sending rate and setting a reasonable buffer size. A threshold can be set. When the data transmission volume of the device exceeds the threshold, the sending rate is automatically reduced to reduce the network load.

[0063] The control and transmission efficiency of multiple high frame rate cameras can be effectively guaranteed by combining the grouped time division scheme with time division multiplexing technology, dynamically allocating resources, and congestion prevention and response mechanisms.

[0064] Preferably, the transfer device is connected to each control module via a wired connection, such as a USB data cable, so as to meet the real-time and data volume requirements of the control instructions while ensuring stable transmission, high speed, strong anti-interference and low data transmission error rate. The stability of the control instructions can ensure the stable transmission of huge amounts of video data under wireless connection.

[0065] In one implementation, the control module includes a video encoding unit, a first main control unit, and a first Beidou positioning unit.

[0066] 1) The video encoding unit is mainly responsible for acquiring the video from the high frame rate camera and encoding and compressing the video, converting it into a video stream that can be played on the network.

[0067] 2) The first main control unit is mainly responsible for controlling the video stream / data stream and driving and managing various hardware interfaces, including the configuration and management of the video encoding unit, including but not limited to the encoding format, bit stream, and bit rate.

[0068] 3) The first Beidou positioning unit is mainly used to obtain geographic location information and time synchronization information.

[0069] In one embodiment, the data transmission module includes a first wireless transmission unit.

[0070] 1) The first wireless unit mainly completes wireless connection and data transmission and has channel control function.

[0071] In one embodiment, the data transmission device includes a second wireless transmission unit, a second main control unit, and a second Beidou positioning unit.

[0072] 1) The second wireless transmission unit mainly completes wireless connection and data transmission, and has a channel control function. In order to maintain a 100M bandwidth, 4 or 8 wireless transmission units can be linked together to maintain a total link bandwidth of 100M.

[0073] 2) The second main control unit mainly completes the configuration and management of the second wireless transmission unit, including but not limited to frequency band channel selection, bandwidth selection, and radio power configuration.

[0074] 3) The second Beidou positioning unit is mainly used to obtain geographic location information and time synchronization information.

[0075] In one embodiment, the relay device includes a video output unit.

[0076] 1) The video output unit realizes the network node, camera node location, and status display; realizes the preview, command control, video transmission, and playback of each camera video.

[0077] In one embodiment, a data transmission device is provided corresponding to a transfer device, and a control module and a data transmission module connected to the same high frame rate camera are respectively connected to the transfer device and the data transmission device corresponding to the transfer device. For example, data transmission device I is provided corresponding to transfer device I, the control module connected to high frame rate camera A is connected to transfer device I, and the data transmission module connected to high frame rate camera A is connected to data transmission device I, so that all relevant information in high frame rate camera A is processed by transfer device I, which can improve processing efficiency.

[0078] In one embodiment, the transfer device is connected to at least 32 control modules, and the data transmission device is connected to at least 32 data transmission modules.

[0079] When the number of high frame rate cameras is too large, it can be achieved by adding transfer equipment and corresponding data transmission equipment. The terminal can be connected to multiple transfer devices, that is, the device can be expanded as needed, thereby improving the practicality of the device.

[0080] In a specific embodiment, a system is constructed, and the number of terminal devices used can be determined according to actual usage requirements, or two sets can be used. Each camera controller and data transmission terminal can be connected and configured through instructions. Each data transmission terminal can be connected to at least 1 to 32 camera controllers, and preferably, the number of connected camera controllers can be controlled to 32.

[0081] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0082] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0083] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0084] Those skilled in the art can understand that: all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiments; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), disks or optical disks, and other media that can store program codes.

[0085] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

[0086] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A remote control and transmission device for multiple high frame rate cameras, characterized in that: include: A control module and a data transmission module are arranged corresponding to and connected to each high frame rate camera, wherein the control module is used to control the operation of the high frame rate camera, and the data transmission module is used to transmit data of the high frame rate camera; A data transmission device, the data transmission device is connected to each of the data transmission modules via wireless; A transfer device, the transfer device is connected to each of the control modules, the data transmission device and the terminal by wired or wireless means, and the transfer device is used to receive instructions from the terminal and send them to the control module connected to the corresponding high frame rate camera, and receive data from the data transmission device and send them to the terminal.

2. The remote control and transmission device for multiple high frame rate cameras according to claim 1, characterized in that: The data transmission device is arranged corresponding to the transfer device, and the control module and the data transmission module connected to the same high frame rate camera are respectively connected to the transfer device and the data transmission device corresponding to the transfer device.

3. The remote control and transmission device for multiple high frame rate cameras according to claim 1, characterized in that: The transfer device can be connected to at least 32 of the control modules, and the data transmission device can be connected to at least 32 of the data transmission modules.

4. The remote control and transmission device for multiple high frame rate cameras according to claim 1, characterized in that: The transfer device performs data verification, data caching, data reorganization, and data compression / decompression on the data received from the data transmission device in sequence, and then sends the data to the terminal.

5. The remote control and transmission device for multiple high frame rate cameras according to claim 1, characterized in that: The control module includes a video encoding unit, a first main control unit and a first Beidou positioning unit; The video encoding unit is used to obtain the video data of the high frame rate camera, and encode and compress the video data to convert it into a video stream that can be played on the network; The first main control unit is used for controlling the video stream / data stream and driving and managing various hardware interfaces; The first Beidou positioning unit is used to obtain geographic location information and time synchronization information; The data transmission module includes a first wireless transmission unit, which is used for wireless connection and data transmission and has a channel control function.

6. The remote control and transmission device for multiple high frame rate cameras according to claim 1, characterized in that: The data transmission device includes a second wireless transmission unit, a second main control unit and a second Beidou positioning unit; The second wireless transmission unit is used for wireless connection and data transmission, and has a channel control function; The second main control unit is used for configuring and managing the second wireless transmission unit; The second Beidou positioning unit is used to obtain geographic location information and time synchronization information; The transfer device includes a video output unit, which realizes the network node, camera node position, status display, and realizes the preview, command control, video transmission, and playback of each camera video.

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