CN1902633A - System and method for controlling a transmission of image data to a display device - Google Patents
System and method for controlling a transmission of image data to a display device Download PDFInfo
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- CN1902633A CN1902633A CNA2004800371275A CN200480037127A CN1902633A CN 1902633 A CN1902633 A CN 1902633A CN A2004800371275 A CNA2004800371275 A CN A2004800371275A CN 200480037127 A CN200480037127 A CN 200480037127A CN 1902633 A CN1902633 A CN 1902633A
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Abstract
A method of controlling a transmission of image data from an image source to an image display device is disclosed, wherein the method includes transmitting the image data from the image source to the image display device, receiving the image data in a buffer on the image display device, reading at least some of the image data out of the buffer for processing by the image display device, monitoring an amount of unprocessed image data in the buffer, transmitting a value representing an amount of unprocessed image data in the buffer from the image display device to the image source, and adjusting the transmission of the image data to the image display device by the image source if the value representing the amount of unprocessed image data meets a preselected condition.
Description
The cross reference of related application
The application requires to submit on Dec 16th, 2003, sequence number is the right of priority of 60/530,465 U.S. Provisional Patent Application, and it completely is included in this and is used for all purposes as a reference.
Technical field
Present invention relates in general to be used for device, the system and method for control data transmission, more specifically, relate to device, the system and method for the image data transmission that is used to control to display device.
Description of drawings
The present invention describes by example rather than by the restriction in the accompanying drawing, the wherein identical identical element of label indication, and wherein:
Fig. 1 is the synoptic diagram of Flame Image Process according to an embodiment of the invention and display system.
Fig. 2 be according to another embodiment of the invention image source and the block diagram of image display.
Fig. 3 is the method flow diagram of the image data transmission of control from the image source to the image display according to another embodiment of the invention.
Embodiment
Fig. 1 always illustrates the synoptic diagram according to the image processing system of the first embodiment of the present invention at 10 places.Image processing system 10 comprises and is configured to the display device 12 of watching display image on the face 14.Display device 12 can be the display device of any suitable type.Its example includes but not limited to that LCD (LCD) and digital light are handled (DLP) projector, system for TV set, computer monitor or the like.
Image processing system 10 comprises that also the image related with display device 12 provides equipment 16, and provides equipment 16 to carry out one or more image sources 18 of telecommunication with image.Image provides equipment 16 to be configured to receive the view data that is sent by image source 18, and the view data that processing receives is in order to be shown by display device 12.Image provides equipment 16 can be integrated in the display device 12, or can be used as the independent assembly that can be connected to display device and provide.The example that suitable image provides equipment was submitted on June 2nd, 2003, sequence number is open in 10/453,905 the U.S. Patent application, and it is included in this as a reference.
Can pass through, or the such image source of other computing equipment provides view data to display device as above-knee or desktop PC, PDA(Personal Digital Assistant).Such display device can be configured to from image source wireless receiving view data, for example by the communication protocol as 802.11b (or other 802.11 agreements), bluetooth etc.These display devices can allow the quick connection layout image source in almost any position in the meeting room, thereby can help single display device is used a plurality of image sources.
Yet, support to use a plurality of image sources may cause all difficulties to single display device.For example, different image sources may have different view data to be handled and transmittability, and may data be sent to display device with different speed.Some image source may send to display device with data can process data into the higher speed of speed that is used to show than display device.This can cause the data input buffer on the display device to be flooded by data, and may cause the mistake in data transmission and the image demonstration.
Fig. 2 illustrates the block diagram of a display system 17 and an image source 18.Image source 18 comprises storer 30, processor 32 and input/output end port 34.Storer 30 can comprise that storage also can be by processor 32 execution to send the code of view data to display system 17 by input/output end port 34 and forward channel 36 thereon.Image source 18 can be configured to send view data with form to display system 17 in any suitable manner.For example, image source 18 can comprise the software that is stored in the storer 30, this software can carry out be created on the image source display screen (as, screen of the monitor screen of desktop PC 18a, laptop computer 18b or the like) bitmap of the image that go up to show, compression and this bitmap is sent to display system 17 be used for showing then.In addition, image source 18 can comprise the part that is configured to change in the recognition image, only encodes, compresses and send the software that has changed part in the image then.Should be understood that these methods that send view data are exemplary, and image source 18 can be configured to data are sent to display system 17 with above-mentioned any other suitable mode and/or form outside those.
Next, display system 17 comprises that also input/output end port 40 is used for communicating by letter with image source 18, and comprises that input buffer 44 is used for the compressing image data that interim storage decompresses and handles from remaining of receiving of image source 18.Display system 17 also comprises processor 42 and storer 46, and storer 46 is used for storing and can be carried out with the data of handling impact damper 44 receptions and the code of carrying out other operations of describing herein by processor 42.
As mentioned above, the relative processing power that depends on image source 18 and display system 17, when image source with when from impact damper 44, reading the higher speed of untreated view data is used to handle in this impact damper speed to display system 17 transmit image data, can situation occurred.In order to prevent that display system 17 is by overwhelmed with image data, display system 17 can comprise and is configured to untreated image data amount in the look aside buffer 44, and will represent that by backward channel 48 value of untreated image data amount in the impact damper sends to the software (or firmware or hardware) of image source from display system 17.If image source 18 can be configured to represent that the value of untreated image data amount satisfies the condition of selecting in advance with respect to the threshold value of selecting in advance, then adjust to the image data transmission of image display.
Fig. 3 always illustrates first example embodiment of the method for image data transmission between control chart image source 18 and the display system 17 at 100 places.Fig. 3 also illustrates from image source 18 to display system the processing that 17 image data transmission and display system are carried out view data always at 102 places.The various operations of carrying out on image display system 17 can be carried out by the code that processor 42 execution are stored in the storer 46 as shown in Figure 3, and those operations of carrying out on image source 18 as shown can be carried out by the code that processor 32 execution are stored in the storer 30.Code also can be stored on the computer-readable recording medium, as disk, CD-ROM, hard disk drive, and can be transferred to image source 18 and/or display system 17.
The image data transmission at 102 places and processing are included in 104 view data are sent to display system from image source, receive view data in 106 impact dampers on display system, read view data 108 from impact damper then and are used for being handled by display system.The transmission view data at 104 places can comprise any step in some possible substeps.These possible substeps can include, but not limited to any step or all in the following step; Generation is presented at the bitmap of the image on the image source, filtering the low data that change from this bitmap comes with the compression of computer graphics data compressor reducer improvement to non-cg data, view data is carried out double sampling, and by one or more compression step compressing image datas.These substeps can be carried out on entire image, or only carry out image has the part of pixel of change with respect to the image of next-door neighbour front on.
When the transmission view data at 104 places comprises one or more compression step, can use any suitable compression method.For example, in the application as compression of video data and transmission, wherein need the Real Time Compression view data, suitable compression method includes but not limited to that LZO compress technique, and hierarchical compression techniques are as pyramidal compression.
During image data transmission, reception and the processing at 102 places, display system 17 can 110 detect or look aside buffer in untreated image data amount.Display system 17 can also will represent that the value of untreated image data amount sends to image source 18 in the impact damper 112.The value of untreated image data amount can be any suitable amount that untreated image data amount in the impact damper is had dependence in the expression impact damper.For example, the value of untreated image data amount can be the absolute magnitude of untreated view data in the impact damper in the expression impact damper, maybe can be the storage absolute magnitude that is not occupied by untreated view data in the impact damper.Perhaps, the value of untreated image data amount can be to be occupied or not by its impact damper number percent that occupies by untreated view data in the expression impact damper.
The condition of Xuan Zeing can meet any suitable relation with respect to predetermined value in advance.In described embodiment, image source 18 determines 118 whether the value of untreated image data amount in the expression impact damper is higher than threshold value.Perhaps, image source 18 can determine whether the value of representing untreated image data amount is greater than or equal to threshold value.The comparison of these replacements can be in the expression impact damper value of untreated image data amount use when being the absolute magnitude of untreated view data in the impact damper or the impact damper number percent that occupies by untreated view data.Perhaps, the value of untreated image data amount is the absolute magnitude that impact damper is not occupied by view data in the expression impact damper, or during number percent, (or replace with, be less than or equal to) threshold value that image source 18 can determine whether this value is lower than.
If image source 18 determines that 118 the value of untreated image data amount in the expression impact damper is not higher than threshold value, then image source 18 continues to send view data with common, higher speed, shown in 120.On the other hand, if image source 18 determines that 118 the value of untreated image data amount in the expression impact damper is higher than threshold value, then image source 18 can begin to send view data with lower speed to display system 17 122, prevents that display system is by overwhelmed with image data.Perhaps, when the value of untreated image data amount is the absolute magnitude of the impact damper that do not occupy or the impact damper number percent that do not occupy in the expression impact damper, then when these values are brought down below the threshold value that (or being less than or equal to) select in advance, can reduce image data transmission rate.
Shown in arrow 130, display system 17 can be configured to detect and send the value of representing untreated image data amount in the impact damper on the basis of periodicity and repetition.This value can detect and send by any required interval.For example, this value can send by regular time intervals.Reasonable time example at interval includes but not limited to those in the scope between about 0.05 second to 0.2 second.A reasonable time concrete example at interval is about 0.1 second in this scope.Should be understood that the above-mentioned time interval is exemplary, and can use any other reasonable time at interval.In addition, can use the interval of measuring by the amount outside the time.For example, can will represent that when receiving the view data of specified quantitative from image source 18 value of untreated image data amount sends to image source 18.
As mentioned above, in one embodiment, provide a kind of method to be used to control the method for the image data transmission from the image source to the image display, wherein said method comprises view data is sent to image display from image source, receive view data in the impact damper on image display, from impact damper, read view data be used for handling to small part by image display, untreated image data amount in the look aside buffer, the value of untreated image data amount in the expression impact damper is sent to image source from image display, satisfy the condition of selecting in advance if reach the value of representing untreated image data amount, then adjust to the image data transmission of image display by image source.
Though the present invention includes specific embodiment, specific embodiment should not be regarded as having limited significance, because may there be a large amount of variants.Subject content of the present invention comprises various element disclosed herein, feature, function, and/or all novel and the non-combination of easily seeing and sub-portfolios of attribute.Following claim particularly points out and is considered as novel and non-particular combinations of easily seeing and sub-portfolio.These claims may be quoted " one " element or " first " element or its equivalence.Such claim should be understood to include the combination to one or more such elements, rather than requires or get rid of two or more such elements.Other combinations of each feature, function, element and/or attribute and sub-portfolio can be by the modifications of claim of the present invention or by providing new claim to ask for protection in the application or related application.No matter such claim is to require wideer, narrower, equivalence or different than original rights on scope, also should be regarded as being included within the subject content of the present invention.
Claims (48)
1. the method for the image data transmission of a control from the image source to the image display, described method comprises:
View data is sent to image display from image source;
Receive view data in the impact damper on image display;
From impact damper, read view data be used for handling to small part;
Untreated image data amount in the look aside buffer;
The value of untreated image data amount in the expression impact damper is sent to image source from image display; And
Satisfy the condition of selecting in advance if represent the value of untreated image data amount, then adjust to the image data transmission of image display by image source.
2. the method for claim 1, it is characterized in that, wherein image data transmission is comprised the bitmap that periodically generates the image on the image source to display device, compress the view data that described bitmap forms compression, the image data transmission with described compression arrives image display then.
3. method as claimed in claim 2 is characterized in that, wherein adjusts image data transmission and comprises the speed that reduces the described bitmap of generation.
4. the method for claim 1 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value that sends the impact damper number percent that expression occupies by view data.
5. method as claimed in claim 4, it is characterized in that, if represent that wherein the value of untreated image data amount satisfies the condition of selecting in advance then the image data transmission of adjusting to image display comprises, if the impact damper number percent that is occupied by view data is equal to or higher than threshold percentage, then reduce transfer rate.
6. the method for claim 1 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value that sends the absolute magnitude of untreated view data in the expression impact damper.
7. method as claimed in claim 6, it is characterized in that, if represent that wherein the value of untreated image data amount satisfies the condition of selecting in advance then the image data transmission of adjusting to image display comprises, if the absolute magnitude of untreated view data is equal to or higher than threshold quantity in the impact damper, then reduce transfer rate.
8. method as claimed in claim 7 is characterized in that, wherein reduces transfer rate and comprises the speed of being obtained view data by the image source reduction.
9. method as claimed in claim 7 is characterized in that, wherein reduces the image transfer rate and comprises the degree of resolution of reduction by the view data of image source transmission.
10. the method for claim 1 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value of the size that sends the impact damper that expression do not occupy by view data.
11. method as claimed in claim 10, it is characterized in that, if represent that wherein the value of untreated image data amount satisfies the condition of selecting in advance then the image data transmission of adjusting to image display comprises, if the size of the impact damper that is occupied by view data is not equal to or less than threshold size, then reduce transfer rate.
12. the method for claim 1 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value that periodically sends untreated image data amount in the expression impact damper.
13. method as claimed in claim 12 is characterized in that, the value of untreated image data amount is to send by the interval between about 0.05 to 0.2 second in the described expression impact damper.
14. on image display, the method for the image data transmission of a kind of control from the image source to the image display, described method comprises:
Reception sends to view data in the impact damper on the image display by image source;
Reading view data from impact damper is used for handling;
Untreated image data amount in the look aside buffer; And
The value of untreated image data amount in the expression impact damper is sent to image source, and wherein said image source is configured to adjust the value of image data transmission with the untreated image data amount of response expression.
15. method as claimed in claim 14 is characterized in that, described view data receives by first channel, and the value of untreated image data amount sends by second channel in the described expression impact damper.
16. method as claimed in claim 14 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value that sends the impact damper number percent that expression occupies by view data.
17. method as claimed in claim 14 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value that sends the absolute magnitude of view data in the expression impact damper.
18. method as claimed in claim 14 is characterized in that, the value that wherein sends untreated image data amount in the expression impact damper comprises the value of the amount that sends the impact damper that expression do not occupy by untreated view data.
19. method as claimed in claim 14 is characterized in that, the value that wherein sends the untreated image data amount of expression comprises the value that periodically sends untreated image data amount in the expression impact damper.
20. method as claimed in claim 19 is characterized in that, the value of the untreated image data amount of described expression is to send by about 0.05 to 0.2 second interval.
21. on image source, a kind of method that controls to the image data transmission of image display, described method comprises:
Image data transmission is arrived image display;
The value of untreated data volume the impact damper from image display reception presentation video display device; And
Response receives the image data transmission that the value of representing untreated data volume in the impact damper is adjusted to display device.
22. method as claimed in claim 21 is characterized in that, the value that wherein receives untreated image data amount in the expression impact damper comprises the value that receives the impact damper number percent that expression occupies by view data.
23. method as claimed in claim 21 is characterized in that, the value that wherein receives untreated image data amount in the expression impact damper comprises the value that receives the absolute magnitude of view data in the expression impact damper.
24. method as claimed in claim 21 is characterized in that, the value that wherein receives untreated image data amount in the expression impact damper comprises the value that receives memory space in the impact damper that expression do not occupy by untreated view data.
25. method as claimed in claim 21 is characterized in that, the value that wherein receives the untreated image data amount of expression comprises the value that periodically receives untreated image data amount in the expression impact damper.
26. method as claimed in claim 25 is characterized in that, the value of the untreated image data amount of described expression is to receive by about 0.05 to 0.2 second interval.
27. method as claimed in claim 21 is characterized in that, the image data transmission of wherein adjusting to display device comprises the image data transmission rate that is reduced to display device.
28. method as claimed in claim 21, it is characterized in that, wherein image data transmission is comprised the bitmap that periodically generates the image on the image source to display device, compress described bitmap to form the view data of compression, the image data transmission with described compression arrives image display then.
29. method as claimed in claim 28 is characterized in that, the image data transmission of wherein adjusting to display device comprises the speed that reduces the described bitmap of generation.
30. method as claimed in claim 28 is characterized in that, the image data transmission of wherein adjusting to display device comprises and reduces the resolution of obtaining described bitmap.
31. an image display comprises storer, processor, and is stored in the storer and can carries out the code of controlling the image data transmission from the image source to the image display by processor, described code comprises:
Be used for the code that impact damper on image display receives the view data that is sent by image source;
Be used for reading the code that view data is used to handle from impact damper;
The code that is used for the untreated image data amount of look aside buffer; And
Be used for the value of the untreated image data amount of expression is sent to the code of image source.
32. image display as claimed in claim 31 is characterized in that, the described code that is used for sending the value of the untreated image data amount of expression impact damper comprises the code of the value that is used to send the impact damper number percent that expression occupies by view data.
33. image display as claimed in claim 31 is characterized in that, the described code that is used for sending the value of the untreated image data amount of expression impact damper comprises the code of the value of the absolute magnitude that is used for sending expression impact damper view data.
34. image display as claimed in claim 31, it is characterized in that the described code that is used for sending the value of the untreated image data amount of expression impact damper comprises the code of the value that is used for sending the impact damper memory space that expression do not occupy by untreated view data.
35. image display as claimed in claim 31 is characterized in that, the described code that is used for sending the value of the untreated image data amount of expression comprises the code of the value that is used for periodically sending the untreated image data amount of expression impact damper.
36. image display as claimed in claim 35, it is characterized in that the described code that is used for periodically sending the value of the untreated image data amount of expression impact damper comprises the code that is used for sending by about 0.05 second to 0.2 second interval the value of the untreated image data amount of expression.
37. an image source comprises storer, processor, and is stored in the storer and can carries out the code of controlling the image data transmission from the image source to the image display by processor, described code comprises:
Be used for the code of image data transmission to image display;
The code of the value of untreated data volume the impact damper from image display reception presentation video display device; And
Be used for adjusting to the code of the image data transmission of display device with the value of the untreated data volume of response reception expression impact damper.
38. image source as claimed in claim 37 is characterized in that, the described code that is used for receiving the value of the untreated image data amount of expression impact damper comprises the code of the value that is used to receive the impact damper number percent that expression occupies by view data.
39. image source as claimed in claim 37 is characterized in that, the described code that is used for receiving the value of the untreated image data amount of expression impact damper comprises the code of the value of the absolute magnitude that is used for receiving expression impact damper view data.
40. image source as claimed in claim 37 is characterized in that, the described code that is used for receiving the value of the untreated image data amount of expression impact damper comprises the code of the value that is used for receiving the impact damper memory space that expression do not occupy by untreated view data.
41. image source as claimed in claim 37 is characterized in that, the described code that is used for receiving the value of the untreated image data amount of expression comprises the code of the value that is used for periodically receiving the untreated image data amount of expression impact damper.
42. image source as claimed in claim 41, it is characterized in that the described code that is used for periodically receiving the value of the untreated image data amount of expression impact damper comprises the code that is used for receiving by about 0.05 to 0.2 second interval the value of the untreated image data amount of expression.
43. image source as claimed in claim 37 is characterized in that, the described code that is used to adjust to the image data transmission of display device comprises the code of the image data transmission rate that is used to be reduced to display device.
44. image source as claimed in claim 37, it is characterized in that, the described code that is used for image data transmission is comprised to the code of display device the bitmap that is used for periodically generating the image on the image source, be used to compress the code of described bitmap, and be used for the image data transmission of described compression is arrived the code of image display with the view data of formation compression.
45. image source as claimed in claim 44 is characterized in that, the described code that is used to adjust the parameter of the image data transmission that relates to display device comprises the code that is used to reduce the speed that generates described bitmap.
46. image source as claimed in claim 44 is characterized in that, the described code that is used to adjust the parameter of the image data transmission that relates to display device comprises the code that is used to reduce the used resolution of the described bitmap of transmission.
47. one kind has the storage medium of code storage on it, described code can be carried out the image data transmission of controlling from the image source to the image display by the image display with storer and processor, and described code comprises:
Be used for the code that impact damper on image display receives the view data that is sent by image source;
Be used for reading the code that view data is used to handle from impact damper;
The code that is used for the untreated image data amount of look aside buffer; And
Be used for the value of the untreated image data amount of expression is sent to the code of image source.
48. one kind has the storage medium of code storage on it, described code can be carried out the image data transmission of controlling from the image source to the image display by the image source with processor and storer, and described code comprises:
Be used for the code of image data transmission to image display;
The code of the value of untreated data volume the impact damper from image display reception presentation video display device; And
The value that is used for responding the untreated data volume of expression impact damper of reception is adjusted to the code of the image data transmission of display device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53046503P | 2003-12-16 | 2003-12-16 | |
| US60/530,465 | 2003-12-16 | ||
| US11/012,978 | 2004-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1902633A true CN1902633A (en) | 2007-01-24 |
| CN100492381C CN100492381C (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800371275A Expired - Fee Related CN100492381C (en) | 2003-12-16 | 2004-12-15 | System and method for controlling a transmission of image data to a display device |
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| Country | Link |
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| CN (1) | CN100492381C (en) |
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| CN100492381C (en) | 2009-05-27 |
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