CN101782928A - Data acquisition processing device and method - Google Patents
Data acquisition processing device and method Download PDFInfo
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- CN101782928A CN101782928A CN200910077084A CN200910077084A CN101782928A CN 101782928 A CN101782928 A CN 101782928A CN 200910077084 A CN200910077084 A CN 200910077084A CN 200910077084 A CN200910077084 A CN 200910077084A CN 101782928 A CN101782928 A CN 101782928A
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Abstract
The invention discloses a data acquisition processing device. The device is characterized by comprising a first data acquisition module, a second data acquisition module, and a data processing module, wherein the first data acquisition module corresponds to first identification information and is used for acquiring first original information; the second data acquisition module corresponds to second identification information and is used for acquiring second original information; the data processing module is connected with the first data acquisition module and the second data acquisition module, and is used for processing the first original information as first processing information and processing the second original information as second processing information after receiving the first original information and the second original information, and transmitting the first processing information and the second processing information to back-end processing equipment through a data transmission link, wherein the first processing information contains the first identification information; and the second processing information contains the second identification information. The data acquisition processing device of the invention can reduce the volume and the cost of the data acquisition processing device, saves a transmission interface of the back-end processing equipment, and enhances the expansion capability of the back-end processing equipment.
Description
Technical field
The present invention relates to the data acquisition process field, relate in particular to a kind of acquisition processing device and method of using a plurality of data acquisition equipments.
Background technology
At present, application based on dual camera has begun to occur, such as in the solid identification and gesture identification of people's face, need two cameras to work simultaneously, again such as two cameras with different qualities at different application, in this type of was used, the image of two camera collections needed synchronous well.In addition, microphone array has been applied in the computing machine, reason is when being under the non-ideal condition, even the best microphone that is embedded in portable computer or the monitor also is difficult to catch sound smoothly, and microphone array can isolate sound source better, resists environmental noise and remove noise.
Common way is to use two independently collecting devices, such as two cameras, two microphones, inserts PC by two USB interface.But, realize in the process of the present invention the inventor, find that there is following technical matters at least in this solution: because two collecting devices are controlled by two controllers, thereby two collecting devices are relatively independent work, and employed two controllers take up room greatly, cost is higher and taken two data interfaces of PC.
In sum, need a kind ofly can utilize a data link to transmit the data acquisition processing device of treated multichannel data.
Summary of the invention
At the problems referred to above, the invention provides a kind of data acquisition processing device, can reduce the transmission interface quantity that takies back-end processing equipment, further improve the synchronism of data processing.
According to data acquisition processing device of the present invention, it is characterized in that, comprising: first data acquisition module, corresponding first identification information is used to obtain first raw information; Second data acquisition module, corresponding second identification information is used to obtain second raw information; Data processing module, be connected with second data acquisition module with first data acquisition module, be used for after receiving first raw information and second raw information, handling first raw information is first process information, handling second raw information is second process information, and first process information and second process information are sent to back-end processing equipment by a data transmission link, wherein, first process information has first identification information, and second process information has second identification information.
Wherein, data transmission link has respectively and first identification information and the corresponding descriptor of second identification information, so that the back-end processing recognition of devices is from first process information and second process information of data acquisition processing device output.
Wherein, data processing module comprises: micro-control unit, be connected respectively to first data acquisition module and second data acquisition module, and control first data acquisition module and second data acquisition module obtains first primary data information (pdi) and first primary data information (pdi) respectively; First data processing unit is connected with first data acquisition module, is used for after receiving first primary data information (pdi), and handling first primary data information (pdi) is the first deal with data information; Second data processing unit is connected with second data acquisition module, is used for after receiving second primary data information (pdi), and handling second primary data information (pdi) is the second deal with data information; First buffer unit is used for the first deal with data information is carried out caching process; And second buffer unit, be used for the second deal with data information is carried out caching process.
Wherein, data processing module comprises: micro-control unit, be connected respectively to first data acquisition module and second data acquisition module, and control first data acquisition module and second data acquisition module obtains first primary data information (pdi) and first primary data information (pdi) respectively; Data processing unit, be connected with second data acquisition module with first data acquisition module, be used for after receiving first primary data information (pdi) and second primary data information (pdi), handling first primary data information (pdi) is the first deal with data information, and handling second primary data information (pdi) is the second deal with data information; And buffer unit, be used for that at least one carries out caching process to the first deal with data information and the second deal with data information.
Wherein, data processing module also comprises: trigger element, according to the trigger pip of the instruction of micro-control unit output for the corresponding data acquisition module; And switch unit, be connected to trigger element and be connected to first data acquisition module and second data acquisition module by a data transmission control channel, trigger pip in response to trigger element output alternately switches to one of corresponding first data acquisition module and second data acquisition module with the Data Transmission Controlling passage, obtains corresponding data information to control first data acquisition module and second data acquisition module.
According to a kind of data acquisition treatment method of the present invention, this method may further comprise the steps: obtain first raw information of corresponding first identification information and second raw information of corresponding second identification information; Handling first raw information is first process information, and handling second raw information is second process information; And first process information and second process information sent to back-end processing equipment by a data transmission link, and wherein, first process information has first identification information, and second process information has second identification information.
Wherein, before second raw information of first raw information that obtains corresponding first identification information and corresponding second identification information, also comprise step: for data transmission link configuration respectively with first identification information and the corresponding descriptor of second identification information, descriptor is used for back-end processing recognition of devices first process information and second process information.
Wherein, be first process information handling first raw information, handle after the step that second raw information is second process information, also comprise step: the buffer memory first deal with data information and the second deal with data information.
Wherein, utilize trigger message to obtain first raw information and second raw information with switching.
Use is according to data acquisition processing device of the present invention, when a plurality of cameras or microphone are worked simultaneously, can guarantee the synchronism of the multichannel data gathered; By revising the device descriptor of USB, even a USB interface only is set, this image acquisition and processing device also can show as a plurality of independently cameras or microphone, thereby for the external device (ED) of for example PC, the application of the multi-cam of having developed can be revised and directly use on this image acquisition and processing device; The quantity of the related elements that uses has reduced, and therefore can reduce the volume and the cost of image acquisition and processing device.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural drawing that the image acquisition and processing device of two cameras of application of the prior art is shown;
Fig. 2 A and Fig. 2 B be according to an embodiment of the invention structural representation with design sketch;
Fig. 3 A and Fig. 3 B illustrate the structural drawing of the image acquisition and processing device of using two cameras according to an embodiment of the invention and the process flow diagram of image-pickup method;
Fig. 4 is the structural drawing that the image acquisition and processing device of using two cameras in accordance with another embodiment of the present invention is shown;
Fig. 5 A and Fig. 5 B show among the present invention respectively to be adopted to the endpoint configurations figure in the image acquisition and processing device shown in the synoptic diagram of the regulation of camera implementation framework and Fig. 4; And
Fig. 6 shows according to the definition of embodiments of the invention to the descriptor of USB device.
Embodiment
With reference to the accompanying drawings, describe the specific embodiment of the present invention in detail.
Fig. 1 illustrates the structural drawing of the image collecting device 100 of two cameras of application of the prior art.In Fig. 1, image collecting device 100 comprises: imageing sensor (cmos sensor) 101a and 101b and controller 102a and 102b.Controller 102a and 102b be control chart image- position sensor 101a and 101b respectively.In this structure, two imageing sensors are respectively by two controllers controls, therefore are separate work, and employed two controller 102a and 102b take 2 USB transmission link interfaces of back-end processing equipment (being personal computer PC).
Referring now to Fig. 2 A and Fig. 2 B, Fig. 2 A shows structural representation according to an embodiment of the invention.As shown in Fig. 2 A, left half of zone _ A among the figure shows, use a controller DSP 204 to control two sensor 202-1,202-2, right half of zone _ B among the figure shows, controller 204 in the camera module 200 by a USB transmission link to the back-end treatment facility PC report that it is two cameras, promptly concerning back-end processing equipment PC, can reach the effect of as shown in Fig. 2 B, anticipating.Thereby use a controller to realize control, and use a USB transmission link to be connected with PC to a plurality of sensors.Therefore, PC can with use two independently the same this camera modules 200 that use of camera.Coordination between two sensor 202-1, the 202-2 is then finished by controller 204.Controller is described in detail with reference to Fig. 3 A, Fig. 3 B and Fig. 4 for the control of camera.
Fig. 3 A shows the structural drawing of the image collecting device of using two cameras according to an embodiment of the invention,, uses the structural drawing of the image collecting device 300 of two cameras that is.Image collecting device 300 comprises data switch unit 302-1, image control unit 302-2, sensor 301a, sensor 301b and I2C passage switch unit 302-3.Image control unit 302-2 inputs to sensor 301a and sensor 301b with clock signal clk.Image control unit 302-2 at first is provided with switching (SWITCH) signal data switch unit 302-1, I2C passage switch unit 302-3 is switched to sensor 301a, export triggering command Trigger_1 then and give sensor 301a, sensor 301a images acquired A also is input to the view data of being gathered among the control module 302-2 by data switch unit 302-1; Next, image control unit 302-2 is provided with the SWITCH signal data switch unit 302-1, I2C passage switch unit 302-3 is switched to sensor 301b, export triggering command Trigger_2 then and give sensor 301b, sensor 301b images acquired also is input to the image B of being gathered among the control module 302-2 by data switch unit 302-1.Repeat this two steps formation entire image gatherer process, just, make sensor 301a and 301b alternation.The data stream that is input among the image control unit 302-2 is as shown in table 1.
| Image A | Image B | Image A | Image B | Image A | Image B |
Table 1
In addition, for reaching higher picture quality requirement, also need in the image collecting device 300 the graphics processing unit (not shown) to image data stream before transmission, handle necessarily (such as, the contrast of image, brightness etc. are handled).
In this embodiment, graphics processing unit is handled being combined into one tunnel data stream, and export treated data to the buffer unit (not shown), the microcontroller (not shown) is to reading through data in buffer, and, be sent to back-end processing equipment by the USB transmission link then to data interpolation SOF (start of framepacket) packet header.The input structure that has added SOF packet header is as shown in table 2:
Table 2
Wherein, microcontroller for image capture sensor to view data add the processing in SOF packet header, wherein, the SOF package definition is as shown in table 3:
(lsb)????????????????????????????????????????(msb)
| ??Field | ??PID | ??ADDR | ??ENDP | ??CRC5 |
| ??Blts | ??8 | ??7 | ??4 | ??5 |
Table 3
In table 3, PID represents the type of USB bag.The address of ADDR indication equipment utilizes 7bit can represent 128 addresses, i.e. 128 equipment.ENDP represents the endpoint number of this equipment, utilizes 4bit to represent that an equipment maximum can support 16 end points.CRC5 represents to wrap proof test value.A standard camera takies a device address, takies 3 end points in this device address.Definition for end points will be described in detail in conjunction with Fig. 5 B.By microcontroller each view data is added corresponding packet header, main frame can be sent identifying corresponding view data into the respective stored address after the data that receive the output of USB transmitting device.
According to the abovementioned embodiments of the present invention, can be by in the structure of available data acquisition processing device, only increasing data switch unit and passage switch unit, by software is improved, just can realize outside equipment list now is the effect of a plurality of data acquisition modules.
Fig. 3 B shows the process flow diagram of the method for the image acquisition and processing device shown in Fig. 3 A.Shown in Fig. 3 B, at first a plurality of sensors are carried out initialization; Judge whether to be the while mode of operation then; According to judged result, when being simultaneously during mode of operation, enable sensors A and forbid sensor B simultaneously, and reading of data and send into terminal A; Enable sensor B then and forbid sensors A simultaneously, and reading of data and send into terminal B; Repeat alternately to switch sensors A and B work, and,, be sent to back-end processing equipment by a USB link according to the data layout of table 1 with the data stream of gathering; Up to withdrawing from mode of operation simultaneously, enter the single camera mode of operation.
Fig. 4 is a structural drawing of using the image collecting device 400 of two cameras according to another embodiment of the present invention.Image control module 402 comprises graphics processing unit 402-1a and 402-1b, micro-control unit 402-2 and data buffer storage unit 402-3, data buffer storage unit 402-4.Micro-control unit 402-2 inputs to sensor 401a and 401b respectively with clock signal clk.Graphics processing unit 402-1a and 402-1b handle the view data that sensor 401a and 401b are gathered respectively, then two-way being handled image result is input to respectively among data buffer storage unit 402-3 and the data buffer storage unit 402-4, last micro-control unit 402-2 takes out the two-way view data from data buffer storage unit 402-3 and data buffer storage unit 402-4 successively, add with Fig. 3 in behind identical SOF packet header, send back-end processing equipment to by one road USB transmission link.Data packet format in the USB transmission link is as shown in the table:
Table 4
Wherein, image A represents that the view data that collects from sensor 401a, image B represent the view data that collects from sensor 401b.
Fig. 5 A shows the synoptic diagram of standard camera implementation framework.Shown in Fig. 5 A, the camera implementation framework is carried out following regulation: each USB camera all can comprise video control interface 502 (videoControl interface) and video flowing interface 504 (Videostreaming interface).Wherein, video control interface 502 comprises two end points (endpoint), is respectively: control end points 506 (Control endpoint) is used for disposing parameters of pick-up head and mode of operation; And interrupt endpoint 508 (Status InterruptEndpoint) is used for camera and feeds back some information and give PC, and for example, some buttons on the camera are pressed.Video flowing interface 504 comprises one or more synchronous transmission or batch Transport endpoint 510 (isochronous or bulk data endpoint), is used for transmitting the video flowing that camera captures.The package definition of transmission is as shown in table 5 in synchronous transmission or batch Transport endpoint 510:
Table 5
The sub-picture that image capture sensor arrives is added a SOF bag and sends to main frame.
Fig. 5 B shows the synoptic diagram of camera implementation framework of the present invention.Two groups of video control interfaces 502 and 502 ' (videoControl interface) and video flowing interface 504 and 504 ' (Videostreaming interface) have been comprised in the camera.Be connected to the USB interface of PC by a USB cable line.
When USB line 512 inserts PC USB port 514, PC will read the device descriptor of USB device, in order to make PC be view data, the device descriptor of USB device is carried out as shown in Figure 6 specific definition from the data identification of USB line 512 from different sensors.
Fig. 6 shows according to the definition of embodiments of the invention to the descriptor of USB device.A USB device can be by the PC system identification, and reason is the device descriptor (device descriptor) that each equipment has, and to the type of equipment, manufacturer needs the resource used etc. to be described in descriptor.For a USB device, its device descriptor is made up of an IAD (interface association descriptor) usually, but allows in the USB standard to have a plurality of IAD in the device descriptor.Therefore, for the system that makes PC can be identified as two independently cameras with the photographing module that passes through the connection of one road transmission link that is comprised among the present invention, need carry out definition as shown in Figure 6 to the descriptor of equipment.For the USB camera of standard, promptly the left-half of Fig. 6 is the IDA of sensors A.For the camera of this patent, increased the IAD of sensor B.When main frame is enumerated USB device, can find that this USB device has two IDA, find it is two cameras by resolving the back, will in system, increase by two camera equipment, and load corresponding driving.
According to the abovementioned embodiments of the present invention, controller has two cover sensor interface and graphics processing units, and the two-way view data alternately is merged into one the tunnel before carrying out the USB transmission, be transferred to PC by USB.The advantage of this scheme is that the frame per second of two sub-pictures can not descend.
Although above with two cameras as the data acquisition parts, embodiments of the invention have been described, but the present invention is not limited to this, can also be applied to the data acquisition parts such as two microphones etc., perhaps a data of different types acquisition component such as first microphone of shooting; And the data transmission link among the present invention is not limited to the USB transmission link, can also with such as PCIe etc. as data transmission link.In addition, although be the present invention that example is described, should be appreciated that the present invention can use the individual data acquisition component of N (N for greater than 2 integer) and less than N data transmission link with two data acquisition component.
In sum, the invention provides a kind of data collector of using the multidata collecting unit.In this device, the Data Control module is carried out synchro control with the multichannel data that a plurality of data acquisition unit is gathered, thereby is that the device of controlling is respectively compared with a plurality of data acquisition units, has better data sync; By revising device descriptor, only provide a data transmission interface even make, this data collector can be a plurality of independently data acquisition units by the back-end processing recognition of devices also, thereby for the back-end processing equipment of for example PC, the application of having developed can be revised and directly use; The quantity of the related elements such as processor that use has reduced, and therefore can reduce the volume and the cost of data collector; Owing to used the interface quantity that is less than data acquisition unit, compared with prior art saved the transmission interface of back-end processing equipment, strengthened the extended capability of back-end processing equipment.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All any modifications of in the scope of the spirit and principles in the present invention, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a data acquisition processing device is characterized in that, comprising:
First data acquisition module, corresponding first identification information is used to obtain first raw information;
Second data acquisition module, corresponding second identification information is used to obtain second raw information;
Data processing module, be connected with described second data acquisition module with described first data acquisition module, be used for after receiving described first raw information and described second raw information, handling described first raw information is first process information, handling described second raw information is second process information, and described first process information and described second process information sent to back-end processing equipment by a data transmission link, wherein, described first process information has described first identification information, and described second process information has described second identification information.
2. data acquisition processing device according to claim 1, it is characterized in that, described data transmission link has respectively and described first identification information and the corresponding descriptor of described second identification information, so that described back-end processing recognition of devices is from described first process information and described second process information of described data acquisition processing device output.
3. data acquisition processing device according to claim 1 is characterized in that, described data processing module comprises:
Micro-control unit, be connected respectively to described first data acquisition module and described second data acquisition module, and control described first data acquisition module and described second data acquisition module obtains described first primary data information (pdi) and described first primary data information (pdi) respectively;
First data processing unit is connected with described first data acquisition module, is used for after receiving described first primary data information (pdi), and handling described first primary data information (pdi) is the first deal with data information;
Second data processing unit is connected with described second data acquisition module, is used for after receiving described second primary data information (pdi), and handling described second primary data information (pdi) is the second deal with data information;
First buffer unit is used for the described first deal with data information is carried out caching process; And
Second buffer unit is used for the described second deal with data information is carried out caching process.
4. data acquisition processing device according to claim 1 is characterized in that, described data processing module comprises:
Micro-control unit, be connected respectively to described first data acquisition module and described second data acquisition module, and control described first data acquisition module and described second data acquisition module obtains described first primary data information (pdi) and described first primary data information (pdi) respectively;
Data processing unit, be connected with described second data acquisition module with described first data acquisition module, be used for after receiving described first primary data information (pdi) and described second primary data information (pdi), handling described first primary data information (pdi) is the first deal with data information, and handling described second primary data information (pdi) is the second deal with data information; And
Buffer unit is used for that at least one carries out caching process to the described first deal with data information and the described second deal with data information.
5. data acquisition processing device according to claim 4 is characterized in that: described data processing module also comprises:
Trigger element is according to the trigger pip of the instruction of described micro-control unit output for the corresponding data acquisition module; And
Switch unit, be connected to described trigger element and be connected to described first data acquisition module and described second data acquisition module by a data transmission control channel, trigger pip in response to described trigger element output alternately switches to one of corresponding described first data acquisition module and described second data acquisition module with described Data Transmission Controlling passage, obtains corresponding data information to control described first data acquisition module and described second data acquisition module.
6. a data acquisition treatment method is characterized in that, said method comprising the steps of:
Obtain first raw information of corresponding first identification information and second raw information of corresponding second identification information;
Handling described first raw information is first process information, and handling described second raw information is second process information; And
Described first process information and described second process information are sent to back-end processing equipment by a data transmission link, and wherein, described first process information has described first identification information, and described second process information has described second identification information.
7. data acquisition treatment method according to claim 6, it is characterized in that, before second raw information of first raw information of corresponding first identification information of described acquisition and corresponding second identification information, also comprise step: for the configuration of described data transmission link respectively with described first identification information and the corresponding descriptor of described second identification information, described descriptor is used for described first process information of described back-end processing recognition of devices and described second process information.
8. data acquisition treatment method according to claim 6, it is characterized in that, in described first raw information of described processing is first process information, handle described second raw information and be after the step of second process information, also comprise step: described first deal with data information of buffer memory and the described second deal with data information.
9. data acquisition treatment method according to claim 6 is characterized in that, first raw information of corresponding first identification information of described acquisition and second raw information of corresponding second identification information are specially:
Obtain first raw information;
Obtain trigger message, described trigger message is used for the duty of switch data acquisition module;
Obtain second raw information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931780A (en) * | 2015-05-20 | 2015-09-23 | 梧州学院 | Synchronous sampling, converting and acquiring device for power harmonic 16-channel signal input |
| CN106708763A (en) * | 2016-08-31 | 2017-05-24 | 北京亮亮视野科技有限公司 | Head-mounted display device and data transmission system of intelligent host |
| CN111090608A (en) * | 2019-12-26 | 2020-05-01 | 深圳市优博讯科技股份有限公司 | Data transmission method and system based on USB device |
| CN113544692A (en) * | 2019-10-10 | 2021-10-22 | 谷歌有限责任公司 | Camera synchronization and image tagging for face authentication |
-
2009
- 2009-01-20 CN CN200910077084A patent/CN101782928A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931780A (en) * | 2015-05-20 | 2015-09-23 | 梧州学院 | Synchronous sampling, converting and acquiring device for power harmonic 16-channel signal input |
| CN104931780B (en) * | 2015-05-20 | 2017-08-25 | 梧州学院 | A kind of channel signal of electric harmonic 16 inputs synchronized sampling conversion and acquisition device |
| CN106708763A (en) * | 2016-08-31 | 2017-05-24 | 北京亮亮视野科技有限公司 | Head-mounted display device and data transmission system of intelligent host |
| CN113544692A (en) * | 2019-10-10 | 2021-10-22 | 谷歌有限责任公司 | Camera synchronization and image tagging for face authentication |
| CN111090608A (en) * | 2019-12-26 | 2020-05-01 | 深圳市优博讯科技股份有限公司 | Data transmission method and system based on USB device |
| CN111090608B (en) * | 2019-12-26 | 2021-07-09 | 深圳市优博讯科技股份有限公司 | Data transmission method and system based on USB device |
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Application publication date: 20100721 |