CN1021381C - Raster scanning display system - Google Patents
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- CN1021381C CN1021381C CN 85101358 CN85101358A CN1021381C CN 1021381 C CN1021381 C CN 1021381C CN 85101358 CN85101358 CN 85101358 CN 85101358 A CN85101358 A CN 85101358A CN 1021381 C CN1021381 C CN 1021381C
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Abstract
The present invention provides a raster scan display system which is used for forming multi-frame color images. A first frame height buffer (5) and a second frame height buffer (6) respectively storing a first color image and a second color image are accessed in a synchronous mode with a CRT; then, a first color pixel data stream (8) and a second color pixel data stream (9) are respectively given from the first frame height buffer and the second frame height buffer; finally, the first color pixel data stream is compared with a predetermined color (14). The difference of the two colors are indicated in comparison, and the first color pixel data stream is transmitted to the CRT; on the other hand, the sameness of the two colors are indicated in comparison, and the second color pixel data stream is transmitted to the CRT; therefore, except for parts with the predetermined color, the first color image is totally overlapped on the second color image as if the parts with the predetermined color in the first color image become transparent.
Description
The present invention relates to a kind of raster scan display system, this system to be reading video data with the synchronous mode of raster scanning from a memory, and they are presented at a CRT(cathode-ray tube (CRT)) or similarly on the device.The present invention is especially relevant with the raster scanning display device that can show in every way.
Raster scan display system is to be used for a frame character or pictorial data are stored in a memory also by to this memory peek, and a passage or an images are presented on CRT or the similar device.Recently, people propose synthetic several images and form multiple colorful image frame.
Set forth an example in day No. 185085/83 application for patent of the present disclosure, be entitled as " image shows ", wherein, from external storage, as a floppy disk driver, the video data of output writes before the image memory at handle, regulation has the look of forbidding, in distributing to the memory cell of forbidding look, original video data keeps constant, then writes the video data from floppy disk driver in other the memory cell again.This way just can remove to form more changeful picture by synthetic several images.For example, such a case is arranged, the automobile image shown in Fig. 5 B is existed in the image memory, assumed vehicle body is a black for the redness tire, and these two kinds of colors are defined as forbids look.Then, the pictorial data of landscape shown in the representative graph 5A is write above-mentioned memory from a disc driver, this has just realized the data at storage one frame pool image (shown in Fig. 5 C) in the image memory.This pool image can be presented on a CRT or the similar device.
If plan to go to carry out more complicated image processing,, will produce difficulty as animation process with this conventional method.If promptly plan to show the automobile in travelling, for example, an automobile that in Fig. 5 C, moves from left to right, and the maintenance of landscape as a setting is static, this carries out continuous processing with regard to requiring to the data of representing background images.To cause the complicated of program thus, and reduce processing speed.
The conventional example that other are relevant with the present invention is entitled as " picture generator " No. 161839/79 and is entitled as in No. 167079/82 application for patent of " CRT picture rewrite show control system " at the Japanese Laid-Open Patent Application book, all narrates.
No. 161839/79 Japanese patent application that is entitled as " picture generator ", its content has been set forth the technology that produces a pool image by the many basic geometric figures of combination, in this technology, those basic geometric figures are represented by different parameters respectively, and provide a transparency feature to a given parameter, so that background reveals in the zone relevant with the transparency feature of given parameter, this that is to say, makes background see through corresponding one or several basic geometric figures.Therefore, one or several geometric substantially mobile corresponding background area appearance that just can make are not promptly with the complicated processing speed that also do not reduce of program.But because this patented invention is to form pool image with geometric substantially combination, so its application is restricted.It can not form image shown in Fig. 5.
No. 167079/82 Japanese patent application that is entitled as " the CRT picture rewrites the control system that shows ".Its content has been set forth a kind of picture that carries out and has been shown the factory flow and the technology of modified flow image constantly.In this technology, factory flow is decomposed into the flow process unit of similar storehouse memory, all prepared a frame memory in these unit each.In each frame memory, in the corresponding memory cell in flow process unit that predetermined video data is write and decomposites, other storage zone then is the no datat zone.These frame memories have been stipulated priority ranking, and same memory cell is wherein detected repeatedly according to given order.In detection, no datat storage zone was allowed, and when measuring first video data, just sent it on the display device, as a CRT.Certainly, this detection and the transmission for video data is to carry out in all memory cells in the synchronous mode of CRT.
Such system is used for moving and when showing each unit, and is very convenient, because needn't consider other unit (background).Then as can be seen, when requiring to show at the same time, this way is difficult to show literal or the image that is covered by each unit, also be difficult to make the visual transparent of each unit, so its use also limits within the specific limits.
The present invention In view of the foregoing makes, and its objective is provides a kind of raster scanning display device, this display device to be easy to the image of motion is synthesized also and can change synthetic mode with the whole bag of tricks.
According to the present invention, raster scan display system comprises following part:
Many storing apparatus that are used to store video data, each storing apparatus wherein can both store the frame image in the image in many frame colours;
Be used for retrieving simultaneously the memory access device of many display data streams from above-mentioned a plurality of storing apparatus;
Be used to be provided with the device of one or more reference colors, wherein the part of this color is at least one frame of above-mentioned many frame color imagies, and being shown as this part is transparence;
Be used for the device that at least one data and above-mentioned one or more reference colors to above-mentioned many display data streams compare;
According to relatively from above-mentioned many display data streams, selecting color data, and the data of selecting are delivered to the device of a display.
Therefore, if, replace talking about the image that then can synthesize at an easy rate among Fig. 5 C with background frame, and need not to consider background images, even also be like this when carrying out animation display with the zone that has in the foreground picture with the consistent color of reference color.
In addition, when be used for that image shows be a character generation systems rather than a bit drawing system time, just can remove many articles of showing with many pictures according to the color of literal chapters and sections or similar sign.
Below, with reference to accompanying drawing, the embodiment that the present invention is applied to microsystem describes.
With reference to Fig. 1, there is shown first embodiment, a CPU(central processing unit), it for example is one 8088 microprocessor, its control bus by not illustrating on data bus 2, address bus 3 and the figure is connected on the various input/output devices that do not illustrate on the figure or the storing apparatus.These I/O and storing apparatus remove from figure for convenience of explanation.
From two couples, the 4 bit pixel datas of parallel/serial change-over circuit 8 and 9, be fed to toning circuit 11 by traffic pilot 10, at there they are converted to picture intelligence R, G, B and I, these signals are delivered to CRT by buffer circuit 12.As for toning circuit 11, will introduce in the back.
The switch motion of traffic pilot 10 selects circuit 13 and ON-OFF control circuit 14 to control by Transparent color.Promptly select circuit 13 to receive and deposit Transparent color data P by data bus 2 by Transparent color.And they are sent to ON-OFF control circuit 14.Transparent color is selected circuit 13, by the data decoding that the data bus is delivered to, obtains PR signal (arbitration signal) and EN signal (the Transparent color mode allows signal), and they are fed to the ON-OFF control circuit 14 of back one-level.PR is one one a bit signal, and it is pointed out from image memory 5, or which pixel data in the secondary memory 6, should give priority processing.For example, the PR signal is if " 1 ", and generally, the pixel data in the image memory 5 is sent from traffic pilot 10.On the contrary, common then be that the pixel data in the secondary memory 6 is preferentially sent if the PR signal is " 0 ", can EN signal Transparent color mode enable.About the Transparent color mode, the back also will be described in detail.
ON-OFF control circuit 14 is fed to traffic pilot 10 to switching signal SW.For example, switching signal SW is if " 1 ", and the pixel data in the image memory 5 is delivered to the back one-level, and if this signal is " 0 ", then the pixel data in the secondary memory 6 is delivered to the back one-level.ON-OFF control circuit 14 is not only selected circuit 13 input Transparent color data P, PR signal and EN signal by Transparent color, also respectively from image memory 5 and secondary memory 6 input pixel datas.It compares these two pairs of pixel datas respectively with the Transparent color data, then according to comparative result, PR signal and EN signal send as table 1 and pointed switching signal " 1 " or " 0 " of table 2, in these two tables, relatively output " 1 " expression comparative result is consistent, " 0 " is then represented inconsistent, and table 1 and table 2 are also pointed out classification (image memory=V, the secondary memory=S) of the pixel data that sends from traffic pilot 10.
Table 1(EN=" 1 "; The Transparent color mode)
Compare output switching signal SW
Secondary memory PR=" 1 " PR=" 0 " of image memory
0 0 1（V） 0（S）
0 1 0（S） 1（V）
1 0 1（V） 0（S）
1 0（S） 1（V）
Table 2(EN=" 0 "; Nontransparent look mode)
Compare output switching signal SW
Secondary memory PR=" 1 " PR=" 0 " of image memory
0 0 1（V） 0（S）
0 1 1（V） 0（S）
1 0 1（V） 0（S）
1 1 1（V） 0（S）
Below, with reference to Fig. 2, select an example of circuit to be described to the Transparent color in the pie graph 1.
With reference to Fig. 2, Transparent color selects circuit 13 to have a Transparent color register 15 and a code translator 16, for example, carries out one section procedure Selection circuit 13, can receive Transparent color by data bus 2 and select data.Transparent color is selected the Transparent color data P in the data, is 4 bits for example, is prepared and is sent to Transparent color register 15.On the other hand, code translator 16 detects the transmission that Transparent color is selected data.And send a write signal WE so that its storage Transparent color data P to register 15.
Code translator 16 receives the display mode switch data of sending here by data bus 2, information in these data comprises, in image memory 5 or the secondary memory 6 which has right of priority, and whether takes the Transparent color mode, then, code translator 16 sends PR and EN signal.
With reference to Fig. 3, the ON-OFF control circuit among Fig. 1 14 is described, as shown in Figure 3, ON-OFF control circuit 14 is made up of two comparator circuits 17 and 18, latchs 19 and a switching signal generation circuit 20.Comparator circuit 17 and 18 respectively has an input end feed-in to select circuit 13(to see Fig. 2 from Transparent color) in the Transparent color data P of Transparent color register.Parallel/serial change-over circuit 8 provides pixel data in the image memory 5 by latch 21 to another input end of comparator circuit 17.Similarly, the pixel data in the secondary memory 6 by another parallel/serial change-over circuit 9, offers another input end of another comparer 18 by latch 22.Comparison output signal " 1 " or " 0 " from comparator circuit 17 and 18 are fed to switching signal generation circuit 20 by latch 19.
Meanwhile, select the PR and the EN signal of code translator 16 in the circuit 13 also to be fed to switching signal generation circuit 20 from Transparent color, and switching signal is fed to traffic pilot 10 according to above-mentioned table 1 and table 2, traffic pilot carries out the mode of switch according to switching signal, points out in table 1 and table 2.
Omitted latch 21,22,23 and 24 among Fig. 1.
With reference to Fig. 4, the toning circuit 11 among Fig. 1 is described.With reference to Fig. 4, toning circuit 11 is by code translator 25, toning register 26
1-26
n, gate circuit 27
1-27
nForm with an OR circuit 28.From the pixel data of traffic pilot 10, once latch 29 lockings, promptly deliver to code translator 25, code translator 25 has several output lines, and for example output line 25
1-25
nCan be 16 lines, and produce output according to the pixel data of 4 bits, alternately is outwards exported by an output terminal.The output line 25 of code translator
1Be connected in toning register 26
1Write signal input end and gate circuit 27
1A gate signal input end on, and other output line 25
2-25
n, be connected in corresponding toning register 26 similarly
2-26
nWith gate circuit 27
2-27
nOn, toning register 26
1-26
nBy data bus 2 input toning datas.
Toning register 26
1-26
nContent be to place like this, input is from traffic pilot 10, predetermined pixel data, this pixel triggers 25
1-25
nIn corresponding to its output line, will deposit 26 in from the data of data bus 2 then
1-26
nIn a relevant register.For example, the toning data that is transmitted is by triggering output line 25
1Deposit register 26 in
1In.Like this data are being write toning register 26
1-26
nAfterwards, if provide pixel data by traffic pilot 10 to code translator 25 again.Then gate circuit 27
1-27
nIn a corresponding door gating, and a corresponding toning data offered CRT by OR circuit 28.
Because during toning data is deposited, corresponding to 26
1-26
nIn a gate circuit 27 of purchasing several registers in advance
1-27
nIn one also by gating.This just might be sent to toning data on the CRT, causes bad demonstration.Therefore, depositing during CRT flyback retrace of toning data carried out.Toning register 26
1-26
nCan be 5 bits or longer.Toning data also is 5 bits or longer certainly.In this case, 32(=2 can be set
5) plant or more colors.16 kinds of colors wherein can show simultaneously.
Now, be described with reference to the working condition of the image among Fig. 5 C or the 5D this embodiment.Usually, this work is carried out by an application program.
At first, the pictorial data of automobile among the representative graph 5B is write image memory 5 among Fig. 1.These data are from an external storage, for example floppy disk driver input.In Fig. 5, the color of background and vehicle window is blue, and vehicle body and tire are respectively red and black.Then, the landscape pictorial data among Fig. 5 A is write secondary memory 6 among Fig. 1.Secondary memory 6 is similar with image memory 5.After this, Transparent color data P is set.Transparent color data P is assumed to blueness.Under the control of address control circuit 4 to 6 peeks of image memory 5 and secondary memory, thereby obtain pixel data by each memory cell corresponding to Fig. 5 B and 5A, and send it to ON-OFF control circuit 14.If the PR signal is " 1 " and EN signal also is " 1 ", in the case, in to image memory 5 during corresponding to the memory cell peek of background and vehicle window, then consistent with Transparent color data P from the pixel data of image memory 5, make ON-OFF control circuit 14 produce the output signal of " 0 ".Therefore, the pixel data in the secondary memory 6 is sent to the toning circuit 11 of back level, to show corresponding image.To this, please refer to the table 1 of front.Because pixel data and Transparent color data from other memory cell of image memory 5 are inconsistent, so switching signal is " 1 ", these pixel datas are sent to toning circuit 11 in the image memory 5, and therefore, data presented is the image among Fig. 5 C on CRT.
If change the Transparent color data, for example change redness into, then can demonstrate the image among Fig. 5 D.Can believe, not need to be described further again for this point.
If " PR " signal is " 0 ", then the automobile image among Fig. 5 B becomes background, and the landscape among Fig. 5 A becomes prospect.If the green of setting in the landscape is defined as Transparent color, then can demonstrates and see through the scene that tree is seen automobile.If the EN signal becomes " 0 ", then only demonstrate high image of priority level or foreground image.Also say so, what adopted no longer is the Transparent color mode.
The above-mentioned course of work has only been explained an example, can show for miscellaneous image certainly.
Now, with reference to Fig. 6 second embodiment of the present invention is described.In Fig. 6, same numeral indicates the parts identical with Fig. 1, for these parts, has just no longer described in detail at this.
The way that this embodiment taked, be in an OR circuit 30, "AND" circuit 31 and anticoincidence circuit 32, to handling from the image cell data of image memory 5 and secondary memory 6, and the output of these circuit and from the output of traffic pilot 10, be fed to another traffic pilot 33, and the demonstration that under expectant control, hockets.Just do like this and can further carry out more changeable demonstration.
The present invention is not restricted to those above-mentioned embodiment, and it can occur in every way.
For example, it can use a character generation systems or a bit figure/character generation combined system.In addition, can stipulate out the Transparent color zone by many Transparent color are put number simultaneously.
As mentioned above, the present invention can be defined as the Transparent color zone with presumptive area, and can carry out various demonstrations by selecting Transparent color in an images.For example, can be by image being synthesized the pool image that forms a variation, the dynamic motion that increases on the image also is easy to performance.It can be applicable to picture panel more than, with various literal of centralized displaying and picture.
The accompanying drawing summary:
Shown in Fig. 1 is the functional-block diagram of first embodiment of the invention.
Fig. 2 is the block diagram of Transparent color selecting circuit structure among Fig. 1.
Fig. 3 is the block diagram of ON-OFF control circuit structure among Fig. 1.
Fig. 4 is the block diagram of toning circuit structure among Fig. 1.
Fig. 5 is the synoptic diagram of the display mode on the display device.
Fig. 6 is the block diagram of second embodiment of the invention.
4 ... address control circuit; 5 ... image memory; 6 ... secondary memory; 10 ... traffic pilot; 13 ... Transparent color is selected circuit; 14 ... ON-OFF control circuit; 17,18 ... comparator circuit.
Claims (3)
1, a plurality of group of picture that will store become a frame image, and the raster scan display system that this frame image shows on display device, it is characterized in that:
Be used to store first and second storing apparatus of video data, each such storing apparatus can both store the frame image in the multiframe color image,
With with the access device of the pixel data group stream that thereby sense data is provided for respectively showing a raster scanning display device from the first and second above-mentioned storing apparatus simultaneously,
Switch controlling device, this installs with two above-mentioned memories and links to each other, thereby receives above-mentioned data stream; This device also links to each other with a data treating apparatus, thereby accepts a selected element value of expression and have a data set of exporting carrying signal from this data processing equipment; This output carrying signal indicates between each group of pixels in the selected above-mentioned data stream and the above-mentioned selected pixel value data to equate still to be not wait, and
First traffic pilot, it receives above-mentioned data stream and has a control input end, this first traffic pilot is corresponding to above-mentioned output terminal, according to selecting one or another one data set in the group of pixels of corresponding indicating signals every pair of correspondence in each data stream, and make the data set of selecting by the first above-mentioned traffic pilot, be sent to above-mentioned raster scanning display device.
2, raster scanning system according to claim 1 wherein also comprises:
Be used for selecting one or more data stream, for the device that in above-mentioned comparison means, compares with above-mentioned reference color from above-mentioned a plurality of display data streams.
3, raster scanning system according to claim 1, wherein, each color data all is by the predetermined bit number representative in the above-mentioned storing apparatus, and above-mentioned color data delivering to the process of above-mentioned display device from above-mentioned storing apparatus, is converted to one group of corresponding colour component signal by the cromogram device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85101358 CN1021381C (en) | 1985-04-01 | 1985-04-01 | Raster scanning display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85101358 CN1021381C (en) | 1985-04-01 | 1985-04-01 | Raster scanning display system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85101358A CN85101358A (en) | 1987-01-31 |
| CN1021381C true CN1021381C (en) | 1993-06-23 |
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ID=4791793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85101358 Expired - Fee Related CN1021381C (en) | 1985-04-01 | 1985-04-01 | Raster scanning display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021381C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063217C (en) * | 1988-12-06 | 2001-03-14 | 出光兴产株式会社 | Lubricating oil for compression type refrigerator |
| CN1108361C (en) * | 1999-03-30 | 2003-05-14 | 恒运集团石油股份有限公司 | Antioxidative compositte of lubricating oil and its application in lubricating oil of internal combustion engine |
-
1985
- 1985-04-01 CN CN 85101358 patent/CN1021381C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063217C (en) * | 1988-12-06 | 2001-03-14 | 出光兴产株式会社 | Lubricating oil for compression type refrigerator |
| CN1108361C (en) * | 1999-03-30 | 2003-05-14 | 恒运集团石油股份有限公司 | Antioxidative compositte of lubricating oil and its application in lubricating oil of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85101358A (en) | 1987-01-31 |
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