WO2005004466A1 - Procede et systeme pour la telecommande de camera d'enregistrement numerique a base de reseau tcp/ip - Google Patents
Procede et systeme pour la telecommande de camera d'enregistrement numerique a base de reseau tcp/ip Download PDFInfo
- Publication number
- WO2005004466A1 WO2005004466A1 PCT/CN2003/000521 CN0300521W WO2005004466A1 WO 2005004466 A1 WO2005004466 A1 WO 2005004466A1 CN 0300521 W CN0300521 W CN 0300521W WO 2005004466 A1 WO2005004466 A1 WO 2005004466A1
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- WIPO (PCT)
- Prior art keywords
- module
- digital video
- video camera
- host
- command
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
Definitions
- the present invention relates to the field of communications, and in particular, to a remote control system and method based on a digital video camera on a TCP / IP network. Background technique
- the object of the present invention is to provide a remote control system and method to solve the shortcomings that the current digital video camera simply depends on the user and can only be operated locally and manually. And realize various functions, get rid of the disadvantages that can only be controlled locally and manually, and get rid of the limitations of the region.
- the present invention adopts the following scheme:
- a remote control system based on a digital video camera on a TCP / IP network which is characterized by including a client module and a host-side module connected through the Internet;
- the host-side module is connected with a digital video camera, and can receive and interpret clients through the Internet. Send control commands to perform corresponding operations on the digital video camera;
- the client module can send control commands to the host module through the Internet, and can receive status information from the host module;
- the host-side module and the client-side module communicate through the TCP / IP protocol.
- the host-side module further includes:
- Socket transceiver module command encoder / decoder module and DirectShow command execution and status monitor module;
- the socket transceiver module receives a control command from a client module and passes the control command to a command encoder / decoder module; receives status data from a digital video camera, and encodes the status data and sends it through the Internet To the client module;
- the command encoder / decoder decodes the data received by the socket transceiver module and triggers the command execution and status monitor module to enable the digital video camera to execute the corresponding control command; and sends the digital video camera status data code to Socket transceiver module;
- the command execution and status monitor module implements control of the digital video camera according to the control command transmitted by the command encoder / decoder module; detects the current mode and time code of the digital video camera, and passes the current mode and time code
- the command encoder and socket transceiver inform the client module.
- the client module further includes: a simulation control interface module of a user digital video camera, a command encoder module, and a socket module;
- the simulation control interface module of the user digital video camera completes the input of user control commands; the command encoder module assembles the user's control commands into a data packet and sends the data to the host module via the socket transceiver module ;
- the socket transceiver module sends or receives data from the host-side module via the Internet.
- the control command includes one or more combinations of the following:
- the interface is an IEEE1394 interface or a USB interface.
- a remote control method based on a digital video camera on a TCP / IP network which communicates through TCP / IP and is characterized by:
- the client sends the encoded command to the host via the Internet
- the host receives the command and decodes it to obtain the corresponding control command.
- the host computer controls the digital video camera according to the corresponding command to complete the corresponding operation.
- the control command includes one or more combinations of the following:
- the control command is carried by a separate protocol.
- the protocol data format includes one or more combinations of the following: a data packet header field, a message flag field, a data packet length field, a source IP address field, a destination IP address field, and a data field.
- the method further includes the steps of the client sending query data through the Internet and the host sending response data to transfer the status data of the digital video camera between the client and the host.
- the operation tube is single and flexible, and the introduction of remote control through the network can make the use of digital video cameras flexible and convenient, eliminating the obstacles of distance brought by manual control;
- Figure 1 is a schematic diagram of the system connection of the present invention
- 2 is a schematic structural diagram of a host-side module according to the present invention
- FIG. 3 is a schematic structural diagram of a client module of the present invention
- FIG. 5 is a schematic diagram of a communication protocol stack according to the present invention.
- FIG. 6 is a schematic flowchart of a client for remote control in a specific embodiment of the present invention
- FIG. 7 is a schematic flowchart of a host for remote control in a specific embodiment of the present invention.
- FIG. 1 it is a connection diagram of a remote control system based on a digital video camera on a TCP / IP network according to the present invention.
- the present invention includes two different modules: a host module (Host) and a client module (Client).
- the Host module runs on an OS that supports DirectShow 8.0 or higher (generally Microsoft Windows series-Windows 98 / ME / 2000 / XP / 2003 Server or later).
- the host computer and digital video camera are connected through IEEE1394 port or USB port.
- the Client module runs on a TCP / IP operating system.
- the operating system can be Microsoft PC Windows series, Unix, Linux, Mac OS, or Windows CE, Palm OS, OS9000 and other embedded operating systems.
- Both Host and Client are connected to the Internet, and the connection medium can be wireless or wired, depending on the specific environment and conditions.
- FIG. 2 it is a schematic structural diagram of a host of the present invention.
- the host of the present invention mainly includes: a socket transceiver, a command encoder / decoder, a command execution and a status monitor. among them:
- the socket transceiver is facing the Internet, and is used to receive data from the client and send status data from the digital camcorder of the encoder. These status data include the current status of the digital camcorder, whether it is a camera mode or a player mode. Player mode, these status data can also be digital tape.
- the current time code on the socket, the socket transceiver sends these status data to the client through the network.
- the command encoder / decoder decodes the data received by the socket transceiver and triggers the command execution and status monitor to let the digital video camera perform the corresponding action. On the other hand, it sends the status data code to the socket. Typewriter.
- Command execution and status monitor for digital video cameras. If the current mode of the digital video camera is the player mode, this module is responsible for driving the player to perform corresponding actions such as playback, pause, fast rewind, fast forward and stop. Client The terminal can send a time code reading command to the Host at regular intervals. The command execution and status monitor is responsible for reading the time code on the tape.
- this module is responsible for sending the digital video camera from Client-side lens control commands-Zoom, Iris, and focus adjustment (Note: The success of the lens control function depends on whether the digital camcorder used has accepted the international standards defined by the IEEE1394 Association Standard AV / C Camera Submit Specification, Firmware of older models of some digital camcorders may not support certain commands, and some manufacturers of digital camcorders only implement some commands. Currently all Canon and Panasonic on the market Digital camcorders both implement Zoom and Focus functions).
- the command execution and status monitor can detect the current mode of the digital video camera, and notify the Client of the current mode through the command encoder and socket transceiver.
- the status monitor will also notify the Client accordingly.
- FIG. 3 it is a schematic diagram of the logical structure of the client of the present invention. As can be seen from the figure, it mainly includes a user digital camcorder simulation control and status display interface, a command encoder, and a socket transceiver, of which:
- the function of the user's digital camcorder is a graphical interface, which can also be a command line receiver of a pure command string. For example, if the user types the command "Rewind", the client sends a rewind command to the host.
- the command encoder assembles the user's control commands into a data message format according to the protocol, and enables the socket receiver to send data packets to the host.
- the socket transceiver is connected to the Internet, sends Client data and receives Host data.
- OS operating system
- MAC media access control
- SUN Workstation SUN Workstation
- PocketPC PocketPC
- the operating system must support the TCP / IP protocol
- DirectX 8.0 or higher generally Microsoft Windows series (can be Window 98, Windows ME, Windows 2000, Windows XP, Windows Server 2003 or later, and other operating systems that support DirectShow), digital video cameras and systems Connect with IEEE 1394 port or connect with USB port.
- the Host must also be connected to the Internet, and the IP of the Host can be a Global IP address or an address identified by the LAN, but only clients in the local area network can access it.
- FIG. 4 it is a schematic flowchart of a remote control method of a digital video camera on a TCP / IP network according to the present invention. As can be seen from the figure, the present invention specifically includes the following steps:
- the client encodes the corresponding control command according to the function of the digital video camera to form a code word that can be recognized by the system, which may specifically include: querying the current mode of the digital video camera, playing, pausing, fast One or more combinations of rewinding, fast-forwarding, stopping, recording, zooming in, zooming out, zooming, and adjusting the aperture, which can be determined according to the specific function keys of different digital video cameras.
- the client sends the encoded command to the host through the Internet.
- the client sends the above-encoded command to the host via the Internet, which can be sent to the network through a wire or wirelessly, depending on the actual hardware configuration of the client.
- the host receives the command and decodes it to obtain a corresponding control command.
- the host receives the encoded command and uses the same encoding rules to decode it to obtain the corresponding control command.
- the host computer controls the digital video camera according to the corresponding command to complete the corresponding operation.
- the host end applies the corresponding control command to the digital camcorder of the terminal, and the corresponding operation can be completed.
- the above process may further include the steps of the client sending query data via the Internet and the host sending response data to transfer the status data of the digital video camera between the client and the host.
- the client and the host communicate through TCP / IP or UDP / IP, but a layer of a new protocol is added on top of TCP or UDP, and is temporarily defined as the command protocol CP (Command Protocol), as shown in FIG. 5 Shown is a schematic diagram of the communication protocol stack of the Host and the Client.
- CP Common Protocol
- CP is a layer of protocol on top of TCP or UDP.
- One or more CP data packets can be used as the original data to be transmitted by TCP or UDP.
- the header structure of the CP is defined as follows:
- msgld is a predefined message identifier.
- message identifiers For remote control of digital video cameras, we define the following message identifiers:
- This message is used to query the current mode of the digital video camera on the host side.
- VCR Video camera mode
- This message is used to report the current time code (TimeCode) of the tape in the digital video camera.
- the first bit of data is reserved, and the second bit is to the end of the data packet.
- the content contains a time code in the form of a string with the format h: mm : ss: ff. h is hour, 0-99; mm is minute, 0-59; ss is second, 0-59, if is frame number
- This message is used by the Host to report the execution of REQ-CH-VCRACTION to the client. If the content of the first bit of data is 0, it indicates that the execution was successful; if it is other values, it indicates that the execution was not successful.
- This message is used by the Client to send lens control commands to the digital video camera.
- the content of the control is placed in the first data. If the content is 10. It means that the lens is zoomed in. If the content is 11, it means that the lens is pushed. If its content is 20, it means that it is set to auto focus; if its content is 21, it means that the manual focus distance is increased; if its content is 22, it means that the manual focus distance is reduced; If its content is 30, it means that it is set to automatic iris; if its content is 31, it means that it is required to increase the manual aperture; if its content is 22, it means that it is required to decrease the manual aperture.
- This message is used by the Host to report the execution of REQ_CH-CAMACTION to the client. If the content of the first bit of data is 0, it indicates that the execution was successful; if it is other values, it indicates that the execution was not successful.
- This variable is the length of the data packet.
- the maximum value is 65500 bytes.
- This variable is the source IP address.
- the general format of an IP address is xx.xxx.xxx.xxx. We convert each field value to hexadecimal, which becomes OxFFFFFF. It can be represented by an unsigned long data.
- This variable is the destination IP address, and its format is the same as srcAddr
- This variable can be used to record the packet sequence number of the packet.
- the receiver can check the successful and failed packets.
- FIG. 6 and FIG. 7 it is a schematic flowchart of a specific implementation manner of the present invention adopting the foregoing protocol structure. As can be seen from the figure, the implementation includes:
- Step 1 Initialize the socket, create the client socket of Host IP and Port, and send REQ_CH__DVMODE to the Host to check the current mode of the digital video camera.
- Step 2 Create the user interface. If the client wants to play the video from the host, it needs to be corresponding. Player's initialization.
- Step 3 If the socket transceiver receives the data sent by the Host, check whether the packet is RSP_CH_DVMODE or REQ_CH_TIMECODE. If it is the former, switch the UI to the corresponding control. If it is the latter, decode the time code. And displayed on the user interface.
- Step 4 If the user interacts with the corresponding command control, encode the corresponding command and send it to the host through the socket transceiver.
- Step 1 Initialize the DirectShow command execution and status monitor module, and search for the device alias corresponding to the digital video camera.
- Step 2 Build CaptureBuilder2 and create a Filter graph.
- Step 3 Bundle the device alias corresponding to the digital video camera with the video capture filter.
- Step 4 Associate the Filter graph with CaptureBuilder2.
- Step 5 Add the video capture filter to the picture.
- Step 6 From the pointer of the QI DV control interface (IID—IAMExtTransport) and the time code read pointer (IID_IAMTimecodeReader) in the video capture filter (Filter).
- Step 7 If all of the above are successful, create a server socket and wait for data from the client.
- Step 8 If the client's REQ_CH_DVMODE is received, call the function of the DV control interface pointer GetCapability to check the current current mode of the digital video camera, and send an RSP—CH—DVMODE message to the client.
- the first data bit contains the digital video The current mode of the recorder.
- Step 9 If the client receives the Timecode message from the client, call the function GetTimecode to read the pointer and format the timecode into a character string. Create a CP protocol packet and send the packet to the client.
- Step 10 If the client receives the control command from the client to control the digital video camera, decode the corresponding command, and call the DV control interface pointer function put_mode to send the corresponding command to the digital video camera; for example, a command not implemented in DirectShow Such as digital tape positioning, lens push and pull, focus and aperture can be achieved by sending AV / C commands to the digital video camera, using interface functions GetTransportBasicParameters sends control data to the digital video camera.
- the related control commands can be obtained from
- the command code 0x00 is a control command
- 0x01 is a status retrieval command
- the subunit type and flag of the VTR state is 0x20
- the subunit type and flag of the Camera state is 0x38.
- the present invention adopts network remote control technology and method, and has the following positive effects:
- the implementation is simple, the operating platform used in the present invention can be consistent with the platform used in remote network control in the prior art, and the operating system used is also a commonly used operating system, and there is no need to make too many improvements in implementation;
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Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003304619A AU2003304619A1 (en) | 2003-07-01 | 2003-07-01 | A method and system for telecontrol the digital recording camera based on tcp/ip network |
PCT/CN2003/000521 WO2005004466A1 (fr) | 2003-07-01 | 2003-07-01 | Procede et systeme pour la telecommande de camera d'enregistrement numerique a base de reseau tcp/ip |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2003/000521 WO2005004466A1 (fr) | 2003-07-01 | 2003-07-01 | Procede et systeme pour la telecommande de camera d'enregistrement numerique a base de reseau tcp/ip |
Publications (1)
Publication Number | Publication Date |
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WO2005004466A1 true WO2005004466A1 (fr) | 2005-01-13 |
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PCT/CN2003/000521 WO2005004466A1 (fr) | 2003-07-01 | 2003-07-01 | Procede et systeme pour la telecommande de camera d'enregistrement numerique a base de reseau tcp/ip |
Country Status (2)
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AU (1) | AU2003304619A1 (zh) |
WO (1) | WO2005004466A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10700773B1 (en) | 2012-01-04 | 2020-06-30 | Spirited Eagle Enterprises, LLC | System and method for enhancing driver situational awareness in a transportation vehicle |
US11697372B1 (en) | 2011-01-04 | 2023-07-11 | Spirited Eagle Enterprises, LLC | System and method for enhancing situational awareness in a transportation vehicle |
Citations (7)
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EP0971529A2 (en) * | 1998-07-10 | 2000-01-12 | Canon Kabushiki Kaisha | Image pickup control apparatus, method, system and storage medium |
CN1278384A (zh) * | 1997-09-04 | 2000-12-27 | 发现通信公司 | 通过计算机网络对包含图象校正的图象访问与控制的装置 |
EP1137285A1 (de) * | 2000-03-03 | 2001-09-26 | Nedret Sahin | Fernsteuerbare Kamera und Verfahren zu ihrem Betrieb |
US20010043272A1 (en) * | 1996-07-23 | 2001-11-22 | Mamoru Sato | Camera control apparatus and method |
CN1336761A (zh) * | 2001-09-05 | 2002-02-20 | 罗笑南 | 对数字视频实现远端控制的方法 |
US20020057348A1 (en) * | 2000-11-16 | 2002-05-16 | Masaki Miura | Video display control method, video display control system, and apparatus employed in such system |
CN1377162A (zh) * | 2001-03-27 | 2002-10-30 | 信息产业部武汉邮电科学研究院 | 物理层与网络层设备之间的数据传输装置和方法 |
-
2003
- 2003-07-01 WO PCT/CN2003/000521 patent/WO2005004466A1/zh active Application Filing
- 2003-07-01 AU AU2003304619A patent/AU2003304619A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010043272A1 (en) * | 1996-07-23 | 2001-11-22 | Mamoru Sato | Camera control apparatus and method |
CN1278384A (zh) * | 1997-09-04 | 2000-12-27 | 发现通信公司 | 通过计算机网络对包含图象校正的图象访问与控制的装置 |
EP0971529A2 (en) * | 1998-07-10 | 2000-01-12 | Canon Kabushiki Kaisha | Image pickup control apparatus, method, system and storage medium |
EP1137285A1 (de) * | 2000-03-03 | 2001-09-26 | Nedret Sahin | Fernsteuerbare Kamera und Verfahren zu ihrem Betrieb |
US20020057348A1 (en) * | 2000-11-16 | 2002-05-16 | Masaki Miura | Video display control method, video display control system, and apparatus employed in such system |
CN1377162A (zh) * | 2001-03-27 | 2002-10-30 | 信息产业部武汉邮电科学研究院 | 物理层与网络层设备之间的数据传输装置和方法 |
CN1336761A (zh) * | 2001-09-05 | 2002-02-20 | 罗笑南 | 对数字视频实现远端控制的方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11697372B1 (en) | 2011-01-04 | 2023-07-11 | Spirited Eagle Enterprises, LLC | System and method for enhancing situational awareness in a transportation vehicle |
US10700773B1 (en) | 2012-01-04 | 2020-06-30 | Spirited Eagle Enterprises, LLC | System and method for enhancing driver situational awareness in a transportation vehicle |
US11305695B1 (en) | 2012-01-04 | 2022-04-19 | Spirited Eagle Enterprises, LLC | System and method for enhancing driver situational awareness in a transportation vehicle |
Also Published As
Publication number | Publication date |
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AU2003304619A1 (en) | 2005-01-21 |
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