CN101159861B - Batch transmission method of image data - Google Patents
Batch transmission method of image data Download PDFInfo
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- CN101159861B CN101159861B CN2007101773350A CN200710177335A CN101159861B CN 101159861 B CN101159861 B CN 101159861B CN 2007101773350 A CN2007101773350 A CN 2007101773350A CN 200710177335 A CN200710177335 A CN 200710177335A CN 101159861 B CN101159861 B CN 101159861B
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- 230000005540 biological transmission Effects 0.000 title claims description 40
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a bulk transfer method of image data and pertains to the image data transfer field. The method is applicable to image collection equipments with bulk transfer interfaces to realize image data transfer, wherein, the image collection equipments send out a complete prior data frame each time, according to the prior frame data length, till the data receiving ends request to finish data transfer, in transferring data to data receiving ends. The invention is provided aiming at the image collection equipments with Bulk transfer interfaces and can reduce transferred data volume, decrease transfer time and improve frame rate, by transferring only one frame of complete data each time.
Description
Technical field
The invention belongs to the image data transmission field, particularly a kind of batch of view data (Bulk) transmission method.
Background technology
Dynamic image data all transmits by the ISO interface at present, but some chip and equipment do not provide the ISO coffret, has only by the Bulk coffret this moment and carries out image data transmission.
Therefore and under normal conditions, in Bulk transmit image data process, the data length that transmit all is predefined, is changeless, and at this moment, if when transmitting adjustable length view data, then efficiency of transmission is lower.
Summary of the invention
Technical problem to be solved by this invention is, a kind of Bulk transmission method of view data is provided, so that in the bulk transfer process of view data, improves the efficiency of transmission of data.
In order to address the above problem, the invention discloses a kind of bulk transfer method of view data, be applicable to the process of image capture device realization image data transmission with Bulk coffret, wherein image capture device is to data receiver transmission data the time, according to current frame data length, complete current data frame of each transmission is transmitted to its request end data up to data receiver.
In the said method, the transmission request that described image capture device sends according to described data receiver to data receiver transmission data, is carried the length information of current data frame in the wherein said transmission request.
Said method specifically may further comprise the steps:
A: described data receiver is after described image capture device request transmit image data, and the length that described image capture device takes out current data frame turns back to described data receiver with it;
B: described data receiver to described image capture device request according to the complete Frame of the length transmission primaries of the current data frame of receiving;
C: the Frame length in the request that described image capture device sends according to described data receiver is to its transferring data frames
D: described data receiver transmits to described image capture device request end data.
In the said method, view data is made up of the Frame of some variable-lengths.
Further, described view data is a compressing image data.
In the said method, image adopts equipment also to have the ISO coffret, is used to transmit dynamic image data.
The present invention is directed to image capture device, a kind of data transmission method is provided, make each transmission only transmit complete frame data, thereby reduced data quantity transmitted, reduced the transmission time, improved frame per second with Bulk coffret.
Description of drawings
Fig. 1 realizes the flow chart of compressing image data bulk transfer for adopting technical solution of the present invention.
Embodiment
Main design of the present invention is, image capture device at the Bulk coffret carries out the image data transmission process, a transmission time is to be determined by the data length that data receiver is asked to transmit, in order to reduce data quantity transmitted, reduce the transmission time, improve frame per second, can make each transmission only transmit complete frame data, work as every frame image data length not simultaneously like this, need firmware firmware to cooperate, image capture device obtains the length of current frame data earlier and turns back to data receiver, and data receiver transmits corresponding data volume according to the length request of obtaining again.
The present invention considers, (being made as T) at a fixed time interior is (being made as D) of fixing by Bulk mode data quantity transmitted, when the data length of being asked when every frame data transmit is constant (be made as L, L is the maximum length that needs in the whole transmission course), then total transmission frame number F=D/L; (be made as L during the variable-length of when the transmission of every frame data, being asked
i, i represents the i time transmission), total data volume that then transmitting the F frame needs is D2=L
1+ L
2+ ...+L
F, because variable-length, promptly Li is the necessary data length of each transmission, so L
i≤ L, i.e. D2＜D; Since T in the time data quantity transmitted D fix, so when having only the frame number F2 that when variable-length, transmits＞F, D2==D is arranged; Promptly at a fixed time in, frame number F2＞length of transmitting during variable-length is the frame number F of time transmission fixedly, that is to say that frame per second has improved.
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in further detail.
Figure 1 shows that, about the bulk transfer process of compressing image data as shown in Figure 1, may further comprise the steps:
Step 101: the driver of data receiver is after obtaining out the stream order, to image capture device request transmission compressing image data;
Step 102: after image capture device receives the transmission request, take out the present frame length that to transmit and this length information is sent to data receiver;
Step 103: data receiver is according to the current data frame length of receiving, and to the image capture device request according to the once complete data frame transfer of this length;
Step 104: image capture device transmits complete Frame to data receiver according to this current data frame length degree;
Step 105: data receiver sends the request that stops transfer of data to image capture device;
Step 106: image capture device stops transfer of data after receiving above-mentioned request.
In the said method, described compressing image data is made up of the Frame of some variable-lengths.
Certainly said method also is applicable to any incompressible image data transmission process except the transmission that is applicable to compressing image data.
The foregoing description makes each transmission only transmit complete frame data, thereby has reduced data quantity transmitted, has reduced the transmission time, has improved frame per second.
The above only is a most preferred embodiment of the present invention, is not to be used for protection scope of the present invention.
Within the spirit and principles in the present invention all, any modification of being made all should be included within protection scope of the present invention.
Claims (6)
1. the bulk transfer method of a view data is applicable to that the image capture device with Bulk coffret realizes the process of image data transmission, it is characterized in that,
Image capture device is to data receiver transmission data the time, data receiver to the image capture device request according to the once complete data frame transfer of current data frame length, described image capture device is according to the current data frame length, complete current data frame of each transmission is transmitted to its request end data up to data receiver.
2. the method for claim 1 is characterized in that, the transmission request that described image capture device sends according to described data receiver to data receiver transmission data, is carried the length information of current data frame in the wherein said transmission request.
3. method as claimed in claim 1 or 2 is characterized in that, this method specifically may further comprise the steps:
A: described data receiver is after described image capture device request transmit image data, and the length that described image capture device takes out current data frame turns back to described data receiver with it;
B: described data receiver to described image capture device request according to the complete Frame of the length transmission primaries of the current data frame of receiving;
C: the Frame length in the request that described image capture device sends according to described data receiver is to its transferring data frames
D: described data receiver transmits to described image capture device request end data.
4. method as claimed in claim 3 is characterized in that described view data is made up of the Frame of some variable-lengths.
5. method as claimed in claim 4 is characterized in that, described view data is a compressing image data.
6. method as claimed in claim 3 is characterized in that described image capture device also has the ISO coffret, is used to transmit dynamic image data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101773350A CN101159861B (en) | 2007-11-14 | 2007-11-14 | Batch transmission method of image data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101773350A CN101159861B (en) | 2007-11-14 | 2007-11-14 | Batch transmission method of image data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101159861A CN101159861A (en) | 2008-04-09 |
| CN101159861B true CN101159861B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101773350A Expired - Fee Related CN101159861B (en) | 2007-11-14 | 2007-11-14 | Batch transmission method of image data |
Country Status (1)
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| CN (1) | CN101159861B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397041A (en) * | 2000-02-03 | 2003-02-12 | 格姆普拉斯公司 | Transporting portable electronic object protocel units by protocol for micro-computer for peripherals |
| CN1487431A (en) * | 2002-08-27 | 2004-04-07 | 富士通株式会社 | Data processor, group identificat method and error correcting method |
| CN1564001A (en) * | 2004-04-09 | 2005-01-12 | 清华大学 | Portable signal generating method and system based on USB mobile memory tech |
-
2007
- 2007-11-14 CN CN2007101773350A patent/CN101159861B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397041A (en) * | 2000-02-03 | 2003-02-12 | 格姆普拉斯公司 | Transporting portable electronic object protocel units by protocol for micro-computer for peripherals |
| CN1487431A (en) * | 2002-08-27 | 2004-04-07 | 富士通株式会社 | Data processor, group identificat method and error correcting method |
| CN1564001A (en) * | 2004-04-09 | 2005-01-12 | 清华大学 | Portable signal generating method and system based on USB mobile memory tech |
Non-Patent Citations (2)
| Title |
|---|
| 戴进.基于USB2.0的红外图像采集系统的设计与实现.中国优秀硕士学位论文全文数据库 2005年第03期.2005,(2005年第03期),摘要、正文第55-57页. |
| 戴进.基于USB2.0的红外图像采集系统的设计与实现.中国优秀硕士学位论文全文数据库 2005年第03期.2005,(2005年第03期),摘要、正文第55-57页. * |
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|---|---|
| CN101159861A (en) | 2008-04-09 |
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Granted publication date: 20110216 Termination date: 20131114 |