CN104113732A - Special camera for POS machine monitoring and monitoring method - Google Patents
Special camera for POS machine monitoring and monitoring method Download PDFInfo
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Abstract
The invention is suitable for the field of security and provides a special camera and method for POS machine monitoring. The camera comprises a camera mainboard, an ARM processor, a character superimposition chip, a character splicing module, a travelling field separating chip, at least one character generator, a data receiving module and a tail interface board, wherein a control port of the camera mainboard is connected with a second pin of the ARM processor, the video output end of the camera mainboard is connected with the input end of the travelling field separating chip, the video output end of the camera mainboard is further connected with the input end of the character superimposition chip, the output end of the travelling field separating chip is connected with the input end of the at least one character generator, the input end of the at least one character generator is further connected with a first pin of the ARM processor, the output end of the character splicing module is connected with the input end of the character superimposition chip, and the output end of the character superimposition chip is connected with a data output port of the tail interface board. The special camera has the advantages of being capable of achieving image acquisition in the POS commodity transaction process, achieving collection and storage of a commodity transaction record and achieving functions of transaction record deletion warning and record query.
Description
Technical Field
The invention belongs to the field of security and protection, and particularly relates to a special camera for monitoring a POS machine and a monitoring method.
Background
The monitoring camera is a semiconductor imaging device, so that the monitoring camera has the advantages of high sensitivity, strong light resistance, small distortion, small volume, long service life, vibration resistance and the like. In the security system of monitoring camera, the image generation is mainly from the CCD camera, the CCD is a short for Charge Coupled Device (Charge Coupled Device), which can change the light into electric Charge and store and transfer the electric Charge, and can also take out the stored electric Charge to change the voltage, so it is an ideal camera element.
POS (Point of sales) is a Chinese meaning of point of sale, which is called point of sale information management system, and has cash or barter function. The main task is to provide data service and management function for commodity and media transaction and to perform cashless settlement. The POS is a multifunctional terminal, it is installed in special commercial tenant and acceptance network of credit card, and connected with computer to form network, and can implement electronic fund automatic transfer, and it has the functions of supporting consumption, preauthorization, balance inquiry and transfer, etc. and is safe, quick and reliable in use. Basic operation information in bulk transactions is difficult to obtain, and the POS system is mainly introduced to solve the information management blind spot of the retail industry. Important components in a chain store management information system.
The supermarket is a large comprehensive retail market which mainly operates foods, household daily necessities and foods in a customer-selected mode. Large comprehensive retail stores, also known as discretions, operated by customers are the major commercial retail organization of many countries, particularly economically developed countries. The POS machines in the supermarket are numerous, the supermarket is provided with monitoring cameras in the positions of the POS machines for monitoring the cash receiving process in the whole process, the existing monitoring cameras of the POS machines are not different from the ordinary monitoring cameras, only monitoring images are obtained, and data and information of the whole transaction process of the POS machines cannot be displayed and stored on the images.
Disclosure of Invention
The embodiment of the invention aims to provide a special camera for monitoring a POS machine and a monitoring method, which solve the problem that the data and information of the whole transaction process of the POS machine cannot be displayed and stored on an image in the prior art.
The embodiment of the invention is realized in such a way that, on one hand, a special camera for monitoring a POS machine is characterized in that the camera comprises: the device comprises a camera mainboard, an ARM processor, a character superposition chip, a character splicing module, a line-field separation chip, at least one character generator, a data receiving module and a tail interface board;
the control port of the camera mainboard is connected with the ARM processor, the video output end of the camera mainboard is connected with the input end of the character superposition chip, and the video output end of the camera mainboard is also connected with the input end of the character superposition chip; the output end of the line-field separation chip is connected with the input end of at least one character generator, the input end of the at least one character generator is also connected with the ARM processor, and the output end of the at least one character generator is connected with the input end of the character splicing module; the output end of the character splicing module is connected with the input end of the character superposition chip, and the output end of the character superposition chip is connected with the data output port of the tail interface board;
the tail interface board still includes: the device comprises a plurality of keys, a data interface and a data output port; the data interface is connected with the ARM processor through the data receiving module; and the signal output ends of the plurality of keys are connected with the ARM processor.
Optionally, the ARM processor is a 32-bit ARM processor.
Optionally, the camera further includes: the alarm output circuit and the alarm input circuit; the input end of the alarm output circuit is connected with the ARM processor, and the output end of the alarm output circuit is connected with the tail interface board; the output end of the alarm input circuit is connected with the ARM processor, and the input end of the alarm input circuit is connected with the tail board interface board.
The specific embodiment of the present invention further provides a monitoring method of the above-mentioned camera dedicated for monitoring a POS machine, where the method includes:
the special camera receives data through the data receiving module;
analyzing protocol information corresponding to the data according to the data, calling a protocol corresponding to the data, and performing protocol processing and filtering item processing on the data;
sending the processed data to a display buffer area;
acquiring video data, processing and calculating the video data, and acquiring a display area of the processed data;
and overlapping the processed data in the display area and transmitting the data and the video data to a monitoring system background server.
Optionally, the alarm input circuit receives an alarm input, processes an alarm, and outputs the processed alarm to the tailboard interface board through the alarm output circuit to perform alarm.
Optionally, after processing and calculating the video data, the method specifically includes:
mov＝λ*min(F(x,y))；
where, mov is the displacement of the display area relative to the reference block (generally, the first unit block of the video image is the reference block), and λ is the displacement coefficient (generally, the value is between 1.05 and 1.1); f (x, y) is a displacement function;
wherein,
wherein G, H represents the current frame and the reference frame, respectively, and x and y are coordinates of displacement (mov).
In the embodiment of the invention, the special camera for monitoring the POS machine provided by the technical scheme superposes the transaction data and the information data of the POS machine on the image of the whole transaction process of the camera, so that the current consumption data and the influence of the POS machine are organically combined to facilitate the query of a supermarket, and the special camera has the advantage of facilitating the query of a user.
Drawings
FIG. 1 is a schematic diagram of a structure of a special camera for monitoring a POS machine provided by the invention;
FIG. 2 is a flow chart of the monitoring method of the special camera for monitoring the POS machine provided by the invention;
FIG. 3 is a schematic diagram of an input/output interface of a tail interface board;
FIG. 4 is a schematic diagram of a main menu setup of a camera according to the present invention;
FIG. 5 is a schematic diagram of the parameter settings of the camera provided by the present invention;
FIG. 6 is a schematic diagram of an alarm setting for a camera provided by the present invention;
fig. 7 is a schematic diagram of a protocol setup of a camera provided by the present invention;
fig. 8 is a schematic menu diagram of the setup of the camera provided by the present invention;
FIG. 9 is a block diagram of the software processing flow of the POS signal processing control board provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the present invention provides a camera 100 dedicated for monitoring a POS machine, which, as shown in fig. 1, includes: the system comprises a camera mainboard 101, an ARM processor 102, a character superposition chip 103, a character splicing module 104, a line-field separation chip 105, at least one character generator 107, a data receiving module 108 and a tail interface board 106;
the control port of the camera mainboard 101 is connected with the ARM processor 102, the video output end of the camera mainboard 101 is connected with the input end of the line-field separation chip 105, and the video output end of the camera mainboard 101 is also connected with the input end of the character superposition chip 103; the output end of the line-field separation chip 105 is connected with the input end of at least one character generator 107, the input end of at least one character generator 107 is also connected with the ARM processor 102, and the output end of at least one character generator 107 is connected with the input end of the character splicing module 104; the output end of the character splicing module 104 is connected with the input end of the character superposition chip 103, and the output end of the character superposition chip 103 is connected with the data output port of the tail interface board 106;
the tail interface board 106 further includes: the device comprises a plurality of keys, a data interface and a data output port; the data interface is connected with the ARM processor 103 through a data receiving module; the signal output ends of the plurality of keys are connected with the ARM processor 103.
The connection with the ARM processor can be in various manners, for example, the connection with one pin of the ARM processor can be realized, and certainly, due to the fact that the real circuit is relatively responsible, the connection with a plurality of pins of the ARM processor can also be realized.
The working principle of the invention is that the camera mainboard 101 sends the video data to the line-field separation chip and the character splicing module at the same time, the line-field separation chip obtains the line number and the column number of the characters which can be displayed in the video data, and transmits the data to at least one character generator, the character generator receives the input data of the ARM processor, after the input data and the number of rows and columns of the characters are processed, sending the data to a character splicing module, sending the line number and the column number and the input data to a character superposition chip together, after the character superposition chip superposes the POS machine data and the video data together, the data acquired by the server is directly multiple data of both POS machine data and video data, so that the POS machine monitoring system has the advantage of organically combining the POS machine data and the video data.
The main board of the camera collects images of the commodity transaction process, and image signals are respectively sent to the character superposition chip and the line-field separation chip. The line-field separating chip separates out the line-field signal of the video and sends the line-field signal to the two-piece character display chip. The two character chips are respectively responsible for the character display control of the left side and the right side of the image.
The ARM processor (preferably 32 bits) receives commodity transaction data and alarm input information and the like transmitted from the POS machine, and analyzes, identifies and processes the data. The data information to be displayed is sent to 2 groups of character display chips, the character display chips output character superposition signals and character background superposition signals according to the data information to be displayed and output to the character splicing module, the character splicing module generates composite character superposition signals and composite character background superposition signals and sends the composite character superposition signals and the composite character background superposition signals to the character superposition chips to realize character display. And the character display mode can select white characters and black edges, black characters and white edges, white characters, black characters, white characters and black backgrounds, and the like. Therefore, the commodity transaction records and other information can be superposed on the image of the commodity transaction process in real time. Meanwhile, an alarm signal is output according to the alarm input and the abnormal condition of the commodity transaction data.
The menu parameters can be set through keys on the tail interface board. The parameters of the camera mainboard, the docking protocol and the communication baud rate of the POS machine can be set, and the parameters of the display position, the font size, the font color and the like of the character display information can be set.
Optionally, the ARM processor may be a 32-bit ARM processor.
Optionally, the camera may further include: an alarm output circuit 111 and an alarm input circuit 110; the input end of the alarm output circuit 111 is connected with the ARM processor, and the output end of the alarm output circuit 111 is connected with the tail interface board; the output end of the alarm input circuit 110 is connected with the ARM processor, and the input end of the alarm input circuit 110 is connected with the tail board interface board.
The method can conveniently monitor and process the alarm information generated in the monitoring process, and has the advantage of processing the alarm information in real time.
The product is used for solving the application defect of the products on the market in POS machine monitoring
1. The product not only collects the commodity transaction image information of the POS machine, but also collects and records the operation process of the POS machine and the details of the sold products, and can generate an alarm signal for deleting the commodity transaction record.
2. The product has no requirement on the selection of the DVR, and the number of the POS machines which can be expanded and monitored is not limited, so that the product is convenient to apply, concise and low in cost.
3. The product has simple construction and low cost.
4. High-definition (720P/1080P) information acquisition of POS machine transaction can be realized.
5. Because single-chip characters of a character signal generator (OSD) on the market currently only display 12 lines by 24 lines of characters, and the content of information transmitted by the POS machine is less than 40 characters per line, the product adopts a special character splicing and overlapping technology of a plurality of character signal generators (OSD), and realizes that more information is overlapped on an image. In addition, the machine provided by the invention also has the following advantages:
1. the image acquisition of the commodity transaction process of the POS can be realized;
2. the collection and storage of the commodity transaction records can be realized,
3. the functions of transaction record deletion alarm, record query and the like can be realized;
4. the USB interface is compatible with 232 serial ports, parallel ports, USB interfaces and 1394 interfaces;
5. the interface protocol of the POS machine of a plurality of manufacturers can be compatible;
6. the function of an SD card;
7. the product categories are divided into analog camera shooting, high-definition (720P/1080P) network cameras and high-definition (720P/1080P) SDI cameras;
8. the multifunctional infrared lamp is diversified in function, and can be used for night vision infrared and white light illumination, water proofing and explosion proofing.
The connecting interface of the product and the POS machine can be compatible with 232 serial ports, parallel ports, USB interfaces and 1394 interfaces; the interface protocol of the POS machine of a plurality of manufacturers can be compatible; the POS machine transmits the commodity transaction data to the camera, the camera superimposes the commodity transaction information on a video image, the data is recorded in an internal memory of the camera or is stored in an SD card or is stored in a U disk through a USB, if a salesperson deletes the transaction record, the camera can generate an alarm signal, the transaction record on the image flashes, the alarm output is linked, and the alarm output can be connected with alarm linkage devices such as an alarm number and the like and can also be transmitted to a DVR. The user can inquire the transaction record and alarm record through the camera Manu. And can also be backed up to an external memory to be queried on the computer. The product has no limitation on the selection of the DVR, and has strong expansibility, simple construction and wiring and low cost. The product is complete in series, comprises a simulation camera, a network high-definition (720P/1080P) camera and a high-definition (720P/1080P) SDI camera, is diversified in function, and can be provided with night vision infrared and white light illumination, water proofing and riot proofing.
The main body part of the product mainly comprises three parts: the main board of the camera, the POS signal processing control board and the tail interface board.
The main board of the camera is mainly used for realizing image acquisition of a commodity transaction process of a POS. Analog cameras, high-definition (720P/1080P) webcams and high-definition (720P/1080P) SDI cameras may be selected.
The POS signal processing control panel is a core component of the product. A 32-bit ARM processor is employed.
The main function is to identify and process the commodity transaction data transmitted from the POS machine, superimpose the commodity transaction information on the video image, record the data in the internal memory of the camera, and simultaneously receive or send out an alarm signal.
The working principle is as follows:
the main board of the camera collects images of the commodity transaction process, and image signals are respectively sent to the character superposition chip and the line-field separation chip. The line-field separating chip separates out the line-field signal of the video and sends the line-field signal to the two-piece character display chip. The two character chips are respectively responsible for the character display control of the left side and the right side of the image.
The 32-bit ARM processor receives commodity transaction data, alarm input information and the like transmitted from the POS machine, and analyzes, identifies and processes the data. The data information to be displayed is sent to 2 groups of character display chips, the character display chips output character superposition signals and character background superposition signals according to the data information to be displayed and output to the character splicing module, the character splicing module generates composite character superposition signals and composite character background superposition signals and sends the composite character superposition signals and the composite character background superposition signals to the character superposition chips to realize character display. And the character display mode can select white characters and black edges, black characters and white edges, white characters, black characters, white characters and black backgrounds, and the like. Therefore, the commodity transaction records and other information can be superposed on the image of the commodity transaction process in real time. Meanwhile, an alarm signal is output according to the alarm input and the abnormal condition of the commodity transaction data.
The menu parameters can be set through keys on the tail interface board. The parameters of the camera mainboard, the docking protocol and the communication baud rate of the POS machine can be set, and the parameters of the display position, the font size, the font color and the like of the character display information can be set.
The specific implementation of the present invention further provides a monitoring method for a dedicated camera, where the method is executed by the dedicated camera, and as shown in fig. 2, the method includes:
201. the special camera receives data through the data receiving module;
202. analyzing protocol information corresponding to the data according to the data, calling a protocol corresponding to the data, and performing protocol processing and filtering item processing on the data;
203. sending the processed data to a display buffer area;
204. acquiring video data, processing and calculating the video data, and acquiring a display area of the processed data;
205. and overlapping the processed data in the display area and transmitting the data and the video data to a monitoring system background server.
The method provided by the invention superposes data (such as POS machine data) on the video, and can be very convenient for a supermarket to monitor the data in the POS machine. Of course, the dedicated camera can also be used in other application scenarios, for example, in monitoring systems in hospitals, in which physiological data of a patient is superimposed on a video image.
The actual flow chart of the above method is shown in fig. 9.
Initialization processing: the 32-bit ARM processor performs initialization setting.
And (3) key processing program: and receiving an external key input signal and carrying out corresponding processing.
And an alarm processing program: and receiving the alarm signal, carrying out corresponding processing and outputting the alarm signal.
The device has 2 alarm input interfaces and one alarm output interface. When the alarm option is set to Enable in the setup menu. When any one of the alarm inputs is triggered, the string "WARING! | A | A Alarm N input "is displayed on the camera image. And when illegal operation or abnormal conditions exist, alarm information can be displayed on a screen. And an alarm signal is output.
POS data processing: and receiving the POS machine data signal and carrying out related processing.
The equipment receives data sent from the serial port of the POS machine, and the protocols of different POS machines are different. For example, under the protocol of the NCR brand POS machine, 2 bytes are transmitted each time, the first 39 bytes are the ascii code displayed, and OD, OA (16-ary) is the end of transmission.
After the equipment receives a frame of data, the content to be displayed is displayed on the camera image according to the requirement of a user. For example: make, clss2L … … 2.298 trade information such as commodity name, price, etc.
Irrelevant information, such as: the store name, address, telephone and advertising information, etc. are filtered and not displayed with characters.
When the received information comprises information of canceling product transaction records and the like, alarm linkage can be generated, an alarm output relay acts, and the transaction records of the images can flash.
The displayed information, line number, position, character size, can be set in the menu. The information is displayed in a scrolling manner. The dwell time may be set in the menu to 5-99 seconds.
RS232 setting: data bit 8, stop bit 1, no parity.
Baud rate 9600bps (default), the user can set 2400bps, 480bps, 19200bps in the settings menu.
A display processing program: the 32-bit processing chip outputs data information to be displayed to display buffer areas of 2 groups of character superposition chips respectively after various processing according to received POS machine transaction information, alarm input signals and the like, and then the data information is transmitted to a character splicing display buffer area, and the spliced character information is superposed on an image screen for display.
It should be noted that the above filtering item processing and protocol processing are technical solutions in the prior art, and the present invention is not described herein, and in addition, the above protocol may be specifically an IBM protocol or the like.
Optionally, before 201, the method may further include: the alarm input circuit receives alarm input, processes alarm information and outputs the processed alarm information to the tail board interface board to execute alarm. The alarm information can be processed in this way.
Optionally, after processing and calculating the video data, the method may specifically include:
mov＝λ*min(F(x,y))；
where, mov is the displacement of the display area relative to the reference block (generally, the first unit block of the video image is the reference block), and λ is the displacement coefficient (generally, the value is between 1.05 and 1.1); f (x, y) is a displacement function;
wherein,
wherein G, H represents the current frame and the reference frame, respectively, and x and y are coordinates of displacement (mov).
Optionally, the specific method for processing the video data by the method may be:
comparing the image of the current frame with the image of the background frame to obtain a portrait image, and taking a minimum rectangular frame containing the portrait image as a processing range; and after performing operation processing on the processing range, outputting the image after the operation processing, wherein the specific method of the operation processing can be as follows:
wherein E is the Fourier transform of the image within the processing range; h is the Fourier transform of the point spread function of the image within the processing range; h*Is the complex conjugate of H; τ is a regularization parameter;
wherein IDFT represents a discrete fourier transform;
wherein,for the processed output image, C (i, j) is a normalization constant; b isPixel gray scale value of (a); h (theta) isThe number of pixels having a gray value theta; gσIs a gaussian function with a standard deviation of σ.
The definition of the image in the effective range can be increased by the calculation, and only the processing range is calculated in the calculation, so the calculation range is very small.
The tail interface board mainly provides interfaces for input and output and the specific interfaces of the platforms as shown in fig. 3;
8PIN green terminal: power input and alarm input/output interfaces;
q9 video head: a video output interface;
an RS232 interface: a POS machine commodity transaction data receiving interface;
automatic iris interface: selecting an automatic aperture lens for use;
LED lamp: a power state indicator light, a data communication indicator light and a key state indicator light;
pressing a key: and the POS terminal is used for setting parameters of the camera main board and the POS signal processing control board.
FIG. 4 is a schematic diagram of a main menu setup;
the menu can be entered by pressing a key to set parameters of the camera. The parameter setting diagram is shown in fig. 5, and as shown in fig. 5, the commodity transaction information display line number, font size, display position, display effect, display time, and the like may be set.
As shown in fig. 6, alarm related parameters can be set for the schematic diagram of alarm setting.
As shown in fig. 7, a diagram is set up for the RS232 protocol. The method is used for setting the interface protocol and baud rate matched with the POS machine. The interface protocol of the POS machine can select AUTO automatic matching, and can also specify protocols such as IBM, DSP, POSIFLEX, Panasonic, 7-ELEVAN and the like. The protocol may also be customized according to the customer.
A schematic menu of camera settings is shown in fig. 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A camera dedicated to monitoring of a POS machine, the camera comprising: the device comprises a camera mainboard, an ARM processor, a character superposition chip, a character splicing module, a line-field separation chip, at least one character generator, a data receiving module and a tail interface board;
the control port of the camera mainboard is connected with the ARM processor, the video output end of the camera mainboard is connected with the input end of the line-field separation chip, and the video output end of the camera mainboard is also connected with the input end of the character superposition chip; the output end of the line-field separation chip is connected with the input end of at least one character generator, the input end of the at least one character generator is also connected with the ARM processor, and the output end of the at least one character generator is connected with the input end of the character splicing module; the output end of the character splicing module is connected with the input end of the character superposition chip, and the output end of the character superposition chip is connected with the data output port of the tail interface board;
the tail interface board still includes: the device comprises a plurality of keys, a data interface and a data output port; the data interface is connected with the ARM processor through the data receiving module; and the signal output ends of the plurality of keys are connected with the ARM processor.
2. The specialized camera of claim 1, wherein the ARM processor is a 32-bit ARM processor.
3. The dedicated camera according to claim 1, characterized in that said camera further comprises: the alarm output circuit and the alarm input circuit; the input end of the alarm output circuit is connected with the ARM processor, and the output end of the alarm output circuit is connected with the tail interface board; the output end of the alarm input circuit is connected with the ARM processor, and the input end of the alarm input circuit is connected with the tail board interface board.
4. A method for monitoring a camera dedicated to POS machine monitoring according to any one of claims 1 to 3, comprising:
the special camera receives data through the data receiving module;
analyzing protocol information corresponding to the data according to the data, calling a protocol corresponding to the data, and performing protocol processing and filtering item processing on the data;
sending the processed data to a display buffer area;
acquiring video data, processing and calculating the video data, and acquiring a display area of the processed data;
and overlapping the processed data in the display area and transmitting the data and the video data to a monitoring system background server.
5. The method of claim 4, further comprising, prior to the dedicated camera receiving the data:
the alarm input circuit receives alarm input, processes alarm information and outputs the processed alarm information to the tail board interface board to execute alarm.
6. The method according to claim 4, wherein after processing and calculating the video data, the method obtains a display area of the processed data by specifically:
mov＝λ*min(F(x,y))；
where, mov is the displacement of the display area relative to the reference block (generally, the first unit block of the video image is the reference block), and λ is the displacement coefficient (generally, the value is between 1.05 and 1.1); f (x, y) is a displacement function;
wherein,
g, H represents the current frame and the reference frame, and x and y are coordinates of displacement.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113286104A (en) * | 2021-05-14 | 2021-08-20 | 深圳市快视电子有限公司 | Video signal superposition dynamic character and picture processing system based on 4K60 |
| CN113382167A (en) * | 2021-06-09 | 2021-09-10 | 杭州海康威视数字技术股份有限公司 | Information superposition display method, device and system and image processing equipment |
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| CN201717969U (en) * | 2009-07-08 | 2011-01-19 | 北京市警视达机电设备研究所 | Device for realizing video character superposition function |
| CN202261621U (en) * | 2011-08-24 | 2012-05-30 | 杭州智诺英特科技有限公司 | Information video superposing, analyzing and early-warning system for POS trading system |
| CN202772979U (en) * | 2012-03-23 | 2013-03-06 | 万彤 | HD-SDI digital high-definition camera having timely dynamic character superposition function |
| CN204013826U (en) * | 2014-07-18 | 2014-12-10 | 董瑞姝 | POS machine monitoring dedicated video camera and system |
-
2014
- 2014-07-18 CN CN201410345765.9A patent/CN104113732B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201717969U (en) * | 2009-07-08 | 2011-01-19 | 北京市警视达机电设备研究所 | Device for realizing video character superposition function |
| CN202261621U (en) * | 2011-08-24 | 2012-05-30 | 杭州智诺英特科技有限公司 | Information video superposing, analyzing and early-warning system for POS trading system |
| CN202772979U (en) * | 2012-03-23 | 2013-03-06 | 万彤 | HD-SDI digital high-definition camera having timely dynamic character superposition function |
| CN204013826U (en) * | 2014-07-18 | 2014-12-10 | 董瑞姝 | POS machine monitoring dedicated video camera and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286104A (en) * | 2021-05-14 | 2021-08-20 | 深圳市快视电子有限公司 | Video signal superposition dynamic character and picture processing system based on 4K60 |
| CN113382167A (en) * | 2021-06-09 | 2021-09-10 | 杭州海康威视数字技术股份有限公司 | Information superposition display method, device and system and image processing equipment |
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| CN104113732B (en) | 2018-04-13 |
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