CN1025385C - Method and apparatus for processing concurrent pick events - Google Patents

Method and apparatus for processing concurrent pick events Download PDF

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Publication number
CN1025385C
CN1025385C CN92104928A CN92104928A CN1025385C CN 1025385 C CN1025385 C CN 1025385C CN 92104928 A CN92104928 A CN 92104928A CN 92104928 A CN92104928 A CN 92104928A CN 1025385 C CN1025385 C CN 1025385C
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pick event
pick
event
adapter
graphics
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CN1068906A (en
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魏括
加里·李·怀斯曼
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International Business Machines Corp
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International Business Machines Corp
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G06F3/04842—Selection of displayed objects or displayed text elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Processing Or Creating Images (AREA)
  • Image Generation (AREA)
  • Digital Computer Display Output (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

A system for processing objects to be displayed including a display for displaying objects, means, coupled to the display means, for processing pick events pertaining to the displayed objects, means, coupled to the processing means, for requesting the processing means to process a first pick event, and means, coupled to the processing means, for requesting, after processing of the first pick event has been requested and prior to completion of the processing of the first pick event, the processing means to process a second pick event. In addition, a method of processing objects to be displayed is described.

Description

Method and apparatus for processing concurrent pick events
The present invention relates to the graphic processing data pick event, relate to the processing concurrent pick event specifically.
Graphics application program often will be used for being presented at the image of a plurality of targets that storer describes.These graphics application programs generally can allow the user be various purposes, such as wiping target, change color of object etc., and select or choose a shown target.The user is referred to as a pick event to choosing of a target or a plurality of targets each time.Each pick event was handled by graphics application program before the user can appreciate another pick event of examination.Yet if the user just uses the multiple graphs application program on a principal computer with a plurality of graphics adapter, the user can carry out each pick event on each adapter, and each adapter is once only handled a pick event.These graphics adapter can have graphic alphanumeric display independent or that share.
Introduce as the various apparatus and method of selecting figure below.
United States Patent (USP) NO.4,958,147th, about a graphic presentation disposal system of utilizing a graph data impact damper, the user can select at one and carry out figure in the figure window and choose.
United States Patent (USP) 4,941,111st, about a video choosing figure and clip system, it comprises the tabulation that is stored in the target that is shown in the primary memory, this tabulation can be used for determining whether a target was selected.
United States Patent (USP) NO.4,885,704th, be used to scan a file and show the national disposal system of the file that is scanned and the file device of the file that scanned of being used to file about one.
United States Patent (USP) NO.4,698,625th, about eye-catching one selected graphic object so that indicate the system of the selected mistake of this target.
United States Patent (USP) NO.4,189,744th, allow required those parts that the user selects an existing scenery and obtain the system of the outline line of those parts automatically about one.
The present invention includes an equipment that is used to handle the target that will show, this equipment comprises: be used for the display of display-object, be coupled with display device and be used for handling the relevant device that is shown the pick event of target, be coupled with this treating apparatus and be used for the Request Processing device and handle the device of one first pick event, and be coupled with treating apparatus and be used for the processing request of above-mentioned first pick event is crossed after and before the finishing dealing with of this first pick event the device of one second pick event of Request Processing device processing.
The present invention also comprises a kind of goal approach of processes and displays, this method comprises the steps: display-object, on a shared processor, handle the pick event relevant with the target that is shown, the Request Processing device is handled one first pick event, and the processing of this first pick event has been requested after and before the finishing dealing with of this first pick event, one second pick event for the treatment of apparatus processing.
After the description and accompanying drawing of consulting below 3, content of the present invention and advantage are had further understanding.
Fig. 1 is the block scheme of a typical digital machine;
Fig. 2 block scheme that to be explanation used by principal computer and graphics adapter in order to the code layer of finishing graphing capability;
Fig. 3 is the process flow diagram how typical 3 d graphics system of explanation carries out a pick event;
Fig. 4 and 6 is illustrated as the process flow diagram that uses most preferred embodiment of the present invention and the process flow diagram of Fig. 3 is made an amendment;
Fig. 7 is the block scheme of the project of a pick event impact damper that is utilized by device driver of explanation.
Fig. 1 is the block scheme of a typical digital machine 100.Computing machine comprises the primary processor 110 that links to each other with storer, input equipment 130 and output device 140.Master processor 110 can comprise single processor or a plurality of processor.Input equipment 130 can comprise a keyboard, mouse, graphic tablet, or the input equipment of other type.Output device 140 can comprise a text monitor, the input equipment of draught machine or other type.Master processor also can be coupled to such as the such graphical output device 150 of graphic alphanumeric display by a graphics adapter.Graphics adapter 200 is received the instruction of relevant figure by master processor 110 on bus 160.Graphics adapter is carried out these instructions then, and revises the slow device 240 of frame according to these.Frame buffer 240 comprises the main data that show various pixels on graphical output device.A RAMDAC(random access memory Digital To Analog Converter) 250 will exist the digital data conversion in the frame buffer to become will offer the rgb signal of graphic alphanumeric display 150, thereby extract required output from master processor thus.
Fig. 2 is that an explanation is normally used by principal computer and suitable adaptation, the block scheme of the code layer that is used for finishing graphing capability.The main control that principal computer is provided such as the operating system 300 of UNIX.The operating system kernel 310 that is coupled with operating system for operating system to hardware, the task of reinforcement is provided.This operating system kernel is directly communicated by letter with host computer microcode 320.The principal computer micro-order is the master instruction of being carried out by host computer processor. Graphics application program 330 and 332 and operating system be coupled.These graphics application program softwares can comprise the GL of storage as Silicon Graphic, the grapHIGS of IBM, and the Soft Roll of MIT and PEX etc., these softwares provide the function of tonic chord of bidimensional or three-dimensional picture. Graphics application program 330 and 332 and graphics application program API(application programming interfaces) 340 and 342 be coupled respectively.This API provides a large amount of calculation tasks for graphics application program, and for graphics adapter at graphics software and approach to provide a kind of interface between graphics software such as device driver, for example, API340 and 342 can be respectively and GAT(graphics application program interface) 350 communicate by letter with 352, GAT provides a kind of interface between application A PI and a graphics adapter device driver 370.In some graphics system, API also carries out the function of GAI.
Graphics application program API and GAI are operated system and regard individual process as.That is to say, graphics application program 330 and 332, API340 and 342, and GAI350 and 352 is operated system 330 and device driver 370 is regarded process 360 and 362 respectively as.Above-mentioned process is identified with a Process identifier (PID) by operating system and device driver, specifies this identifier by operating system kernel to process. Process 360 and 362 can be used this same sign indicating number, and this sign indicating number is performed twice simultaneously, such as, at two windows that separate a program is carried out twice.This PID is used to distinguish each time execution of same sign indicating number.
Driving arrangement is a graphic core, and this graphic core is the extension of operating system kernel 310.Graphic core directly and the microcode direct communication of graphics adapter 380.In many graphics systems, if do not use the GAI layer, this driver that then GAI, or APU can pass through is sent out the request of a startup request instruction and is directly obtained microcode from GAI or API.Herein, many graphics systems are sent one by device driver and are started request instruction and also allow adapter directly to obtain GAI or API from the adapter microcode when not using GAI.Be referred to as direct memory access (DMA) (DMA) after above-mentioned two processes order.When transmitting big data block, to use DMA usually.To drive and send this startups and ask to make device driver set up DMA(direct memory access (DMA) through display as long as the present invention has eliminated) and this DMA provides the data transmission of the comparison block between principal computer and adapter.At certain in the case, adapter microcode is utilized context transfer, and this transfer can make adapter microcode replace the current attribute of just being used by the microcode of adapter.When adapter microcode will receive an instruction from the graphics application program that utilizes an attribute that is different from the current adaptive microcode of just using, context transfer was used.Context transfer is often by confirming that the device driver that this attribute changes starts.
Square frame 300-340 is the software code layer that some types common and employed graphics adapter have nothing to do.Square frame 350-380 is some software layers relevant with the type of employed graphics adapter usually.For example, a different graphics adapter will be used by graphical application software, new GAI then, and graphic core and adapter microcode need.In addition, square frame 300-370 carries out in computing machine and by calculating.Yet this adapter microcode 380 is in graphics adapter and by its execution.But, in some cases, this adapter microcode is loaded in the graphics adapter when the initialization of graphics adapter by principal computer.
In common graphics system, user's indicating graphic application builds makes up image according to a two dimension or three dimensional pattern.The user is the position and the type of selective light at first.The user indicates this application software to go to set up required pattern according to one group of target predetermined or that the user determines then.Each target can comprise the pel of one or more these targets of description.For example, one group can be used to determine a target surface such as many leg-of-mutton pels.The user provides a perspective to go to observe this pattern then in a window, determine required image thus, application software adopts then by this API, GAI, and device driver (unless use DMA) method from the pel of describing target to adapter microcode that send starts according to this pattern and retouches this image of system.Adapter microcode is cut (promptly not using) these pels of can not see at window then and describe this image on graphic alphanumeric display by cutting, adapter microcode is divided into some visible pixels according to the perspective pel that each is remaining that the user provides then.Then these pixels are encased in the frame buffer, when three dimensional pattern, then often use and attempt impact damper.The calculated amount in this step is very big.Because comprised a considerable amount of pels, tolerance and pixel.Image on being stored in frame buffer like this, at last and being shown in graphic alphanumeric display does not carry such as relevant pixel from that pel or the more so original information of target.So, if when window, user's perspective, pattern, light and shade distribution etc. change, will do local or whole describing again to image.This also can select the target in the window to cause difficulty to examination.In typical three dimensional pattern, when the user is choosing the target that is presented in the window, be through having a complexity all through the ages time-consuming process.
Fig. 3 is the process flow diagram how a typical 3 d graphics system carries out a pick event.By graphics application program, application A PI, GAI device driver and adapter microcode are carried out respectively at square frame 400,410, each step in 420,430 and 440.When the first step 500, graphics application program software receives such as mouse soft from the user and knocks (clicking) this choosing figure request.What graphics application program software then distributed a name that is used for receiving the pel that is selected or other identifier selects the diagram data impact damper, and one is selected diagram data length.Application software calls one then and selects the figure subroutine to come selecting the diagram data impact damper and selecting diagram data length to check position (for example Pick[Buffer, Brfferlen]).505 o'clock steps, graphics application program API be used for to the graph data structure of selecting from the adapter microcode Data transmission.Select graph data structure to comprise that a choosing figure report is used for identifying this and selects graph data structure to be used for a pick event.In addition, this selects graph data structure to comprise the particular variables of the x of cursor and y coordinate and some application program, such as the pick device describing the device number of employed graphics adapter type and describe whether to use a mouse or other type i/O equipment number.Graphics application program API selects chart-pattern instruction to send GAI to one then, and selects graph data structure with what pointed was distributed.In the step 510, GAI uses to one of device driver issue and selects the chart-pattern commanded response in select the chart-pattern instruction from API.This choosing figure instruction comprises that some select the graph data structure pointer, comprises and points to those pointers that select the figure utmost point and select the figure impact damper.Device driver also receives the lucky journey sign mansion (PIO) that the process (graphics application program, API and GAI) of chart-pattern order is selected in issue.In the step 515, device driver is set up a DMA and is used for according to this choosing figure order mobile data between graphics adapter and principal computer.Device driver selects the chart-pattern order to what one of graphics adapter microcode issue comprised the pointer that selects graph data structure then.Relating to 520 hours, microcode will be pointed to and select the graph data structure pointer to deposit in the adapter memory, enter into one then and select chart-pattern.In selecting chart-pattern, adapter will not show received pel.Adapter will determine whether selected pel is selected.In addition, in selecting chart-pattern, adapter will be not receive any other order in the slave unit driver, finishes up to pick event.As a result, the application software of this application software or other and graphics adapter coupling can not utilize graphics adapter, directly end pick event when finishing till.
Select the figure subroutine not fair in the graphics application program software transfer, produce the pel of the relevant image of choosing at step 525 graphics application program software startups.530 o'clock steps, graphics application program API closed to GAI and goes these to be added with name or the former identifier of other identification pel.535 o'clock steps, GAI delivered to the graphics adapter code with DMA with these pels and name thereof.540 o'clock steps, the graphics adapter microcode received pel and begins to determine that (pel that promptly is extracted comprises that one is positioned at the x of cursor and the pixel of y coordinate to the process whether any pel is selected by DMA.These coordinates provide and are selecting the graph data structure center.
In the step 545, after first pel has been determined to be chosen, microcode set up DMA(from adapter microcode to GAI) this first pel of choosing is sent back to graphics application program during selecting the figure impact damper.Microcode produces one to device driver then and selects the figure end interrupt signal to inform: this first pel of being determined by adapter microcode is delivered to GAI by DMA.In 550 steps, device driver receives and selects the figure end interrupt signal.Notify GAI then: first pel of getting is sent to GAI by DMA.In prior art, some adapter utilizes a status register in adapter, this state can be read by device driver, it comprises that one is inserted into this state in depositing by this adapter microcode, be used for specifying the look-at-me (choosing figure interrupts, and interruption etc. makes mistakes) of which kind of type to be delivered to device driver by this adapter.When 555 steps, GAI notifies API: first pel of choosing is in selecting the figure impact damper.When 560 steps, graphics adapter API notifies graphics application program: first pel of choosing is in selecting the diagram data impact damper.
At this place, graphics application program can continue that pel is delivered to microcode or it can stop to send pel to microcode.This depends on whether be that the pick event of this special pattern application program is one first choosing figure, choosing figure the most, whole choosing figure, still visual choosing figure etc.If one first choosing figure does not then need to choose pel again.Therefore, graphics application program may stop to send pel to adapter code.If the most last choosing figure, visual choosing figure or all choosing figure, then graphics application program may continue to transmit pel to adapter microcode, up to whole pels are transmitted finish till.
When 526 steps, in any case as long as pel transmits to be finished, graphics application program indication API when 564 steps sends the request of an end mode instruction to GAI.When 566 steps, GAI sends an end mode and instructs to device driver.When 750 steps, device driver sends an end to adapter microcode and selects the chart-pattern instruction.
In 575 steps, the graphics adapter microcode ends to choose the DMA of pel.After the DMA of the pel title of choosing (one or more) finishes, if do not choose pel, then graphics adapter is exported this and is selected chart-pattern, so that adapter receives new and the irrelevant order of this pick event, and sends one to this mediations driver and selects the figure end interrupt to instruct.When 580 steps, device driver notice GAI: choosing figure is finished by adapter microcode.In 585 steps, GAI notice graphics application program API: pick event finishes, and the title or the identifier of the pel that is sent are in selecting the figure impact damper.In 590 steps, graphics application program API notifies graphics application program: selected pel is in data buffer.In 595 steps, graphics application program have be assigned with select the diagram data impact damper, and piled in this impact damper meet this application program select the figure requirement, graphics application program can utilize this information according to its requirement.
One of difficulty of the process of foregoing description is: when the user started a pick event to a given graphics adapter, before this pick event finished, the user was possible start another such as the such incident of pick event at another window or process.Elected chart-pattern complicated to being enough to make the user can wait for segment length's time so that when after the user starts pick event, finishing this pick event, all the more so really.Describe below and allow the user start a pick event and can before first pick event finishes, proceed another then such as the sort of task of pick event.
Fig. 4 process flow diagram that to be an explanation make an amendment to the process flow diagram of Fig. 3 is to utilize a most preferred embodiment of the present invention.Square frame 600 and 650 square frames 515 and 520 corresponding to Fig. 3.Square frame 600 comprises four rapid step by step by what comprise that driver carries out.In the first step 610, device driver is set up a DMA and is used for that order transmits data between graphics adapter and principal computer according to choosing figure.When 620 steps, device driver obtains a pick event identifier, is referred to as a correlative symbol code (Corrc ' ator Code) or correlative symbol herein.In a most preferred embodiment, the principal computer storer comprises the register or the storage unit that are used for depositing a correlative symbol code.When this correlative symbol code was used for another pick event, the correlative symbol code added 1 through preparing for next pick event.In another alternate embodiments, if each graphics application program once can only send a pick event, then Process identifier can be used as and selects graph identifier.Device driver is deposited into this correlative code in the impact damper in the principal computer storer together with Process identifier (PID) and data structure pointer then.640 little, device driver selects the chart-pattern order to what one of graphics adapter microcode issue comprised that other selects graph data structure pointer and correlative symbol code.
In 650 steps, adapter microcode is carried out following three steps: in 660 and 670 steps, adapter microcode will be pointed to the pointer and the corresponding correlative code that select graph data structure and deposit in the adapter memory, and in 680 steps, adapter microcode enters into one and selects chart-pattern.In selecting chart-pattern, adapter will no longer show and increase the pel corresponding to correlative code that receives.Adapter will determine whether these pels that receive are chosen.And have earlier describe select chart-pattern different be that adapter will the slave unit driver receives except the order relevant with pick event orders, and can transmit the pel of sending from other application software.Adapter microcode can be handled other and comprise that pick event is little, because of driver and adapter microcode have a correlative symbol or send figure event identifier sign indicating number, this identification code selects the graph data structure pointer, its identification data structure is pointed to that pick event, to utilizing all adapters of context transfer, device driver will use Process identifier and correlative symbol telling the adapter microcode context to be made amendment when paying use by adapter microcode.
Fig. 5 is one and is used for illustrating that process flow diagram to the modification of process flow diagram shown in Figure 3 is in order to use a most preferred embodiment of the present invention.Square frame 700 and 760 square frames 535 and 540 corresponding to Fig. 3.GAI carries out and two steps in 700 steps.When 710 steps, GAI sends pel and name thereof by DMA to graphics adapter.In 720 steps, GAI announcement apparatus driver: it sends pel to adapter microcode.In 730 steps, device driver is at first determined according to this Process identifier in 740 steps: whether this GAI is different from previous GAI.If then device driver changes pick event at 750 o'clock notice adapters.If not, then device driver allows adapter microcode to continue the process of current state.It is three steps that adapter microcode continues in 760 steps.If device driver has told adapter to change pick event, then adapter microcode will be revised the pointer that those point to data when 770 steps, comprise the graph data structure of selecting of adapter microcode utilization.To utilizing the adapter of context transfer, device driver will use Process identifier and correlative symbol when telling that this context of adapter need be made amendment by adapter for using.In 780 steps, adapter device microcode is crossed DMA and is read pel and pel title from GAI, and in 790 steps, adapter microcode determines which pel is selected.
Fig. 6 is the process flow diagram that flow process made an amendment of an explanation to Fig. 3, is used for utilizing most preferred embodiment of the present invention.Square frame 800 and 850 is corresponding to the square frame 545 of Fig. 3 and 550 or square frame 575 and 580.
In 800 steps, adapter microcode is finished three steps.In 810 steps, adapter microcode begin DMA(from this adapter microcode to GAI), the title of the pel (one or more) chosen is sent back in the graphics application program that selects the figure impact damper, the title of the pel that is selected is sent to suitable GAI, because same data structure pointer all is used for pick event by the suitable device microcode of GAI, in 820 steps, adapter microcode will be put into the status register of adapter stores corresponding to the title correlative symbol code of the pel that is transmitted by DMA, and described adapter memory can be by the device driver access.In 830 steps, adapter microcode sends one to device driver and selects the figure end interrupt signal to tell pel to be determined to be chosen and to tell selected pel to deliver to GAI with DMA by adapter microcode.
In 850 steps, device driver is finished three steps.In the first step 860, device driver receives and selects the figure end interrupt signal.In 870 steps, device driver is read status register in adapter memory to obtain the correlative symbol code.In 880 steps, according to this correlative symbol code, device driver is read pick event impact damper in primary memory to obtain the process identification (PID) sign indicating number (PID) corresponding to the correlative symbol code.In 890 steps, according to PID, device driver is notified suitable GAI: selected pel (one or more) closed to GAI by DMA.
To be an explanation exist pick event impact damper project in the principal computer primary memory by device driver to Fig. 7.Described impact damper project comprises the Process identifier (PID) 910 of the process that starts pick event, be used for by this course allocation select graph data structure select graph data structure pointer 920, and corresponding to the correlative symbol 930 of pick event.
Owing to used pick event identifier or correlative symbol code, device driver and adapter microcode can be handled a plurality of concurrent pick events.That is, correlative symbol provides the means that identify each pick event, thereby can make graphics system identify which pick event corresponding to some data, instruction or other pick event customizing messages.For example, when the pel of one first pick event is just being delivered to adapter microcode by first graphics application program, the pel that the second graph application program can be asked to start a pick event and begin to send relevant second pick event then before first pick event is finished.
Though the present invention has done sufficient description in conjunction with specific embodiments, other embodiment that can Gong select for use may be conspicuous to those of ordinary skill in the art.For example, can produce the correlative symbol code and this correlative symbol code is used as the method for the pick event identifier (this data structure is passed to device driver and adapter microcode) in selecting graph data structure with operating system, same graphics application program can be carried out two simultaneous pick event.The pick event maneuver of other type beyond in addition, the pick event identifier can be used to sum up state.Therefore, placing restrictions on of scope of the present invention that can not work as opposes limits as claim more than described.

Claims (15)

1, a kind of equipment that is used to handle the target that will show is characterized in that:
(a) be used for the display device of display-object;
(b) treating apparatus, it and display device are coupled, and are used for handling belonging to the pick event that is shown target;
(c) be coupled with treating apparatus, be used for the Request Processing device to handle the device of one first pick event; And
(d) be coupled with treating apparatus, be used for first pick event has been requested to handle after and before this first pick event end Request Processing device to handle the device of second pick event.
2, the equipment of claim 1 is characterized in that:
Be used to distinguish the device of first pick event and second pick event.
3, the equipment of claim 2 is characterized in that:
Above-mentioned discriminating device comprises and is used to produce the identifier that is used for each pick event.
4, the equipment of claim 3 is characterized in that:
Be used to ask the device of first pick event to comprise first application programmer of a utilization with one first zone that is shown.
5, the device of claim 4 is characterized in that:
Be used to ask the device of second pick event to comprise second application programmer that utilizes one second zone that shows.
6, a kind of method that is used to handle the target that will show is characterized in that following steps:
(a) display-object;
(b) on common treating apparatus, handle the pick event that belongs to the target that is shown;
(c) the Request Processing device is handled one first pick event; And
(d) after first pick event Request Processing and before this processing finishes, the Request Processing device is handled one second pick event.
7, the method for claim 6 is characterized in that:
Distinguish the step of first pick event and second pick event.
8, the method for claim 7 is characterized in that:
Differentiation step wherein comprises that generation is used for the identifier of each pick event.
9, the method for claim 8 is characterized in that:
Ask the first pick event step to comprise to utilize the step in one first zone that shows.
10, the method for claim 9 is characterized in that:
Ask the step of second pick event to comprise the step of utilizing second zone that shows.
11, a kind of equipment that is used to handle the target that will show is characterized in that:
(a) be used for the display device of display-object;
(b) treating apparatus, it and display device are coupled, and are used for handling the pick event that belongs to the target that is shown; And
(c) principal computer, it comprises:
(1) is coupled, is used for the Request Processing device with treating apparatus and handle the device of one first pick event; And
(2) be coupled, be used for after Request Processing first pick event and before this first pick event processing finishes with treating apparatus, the Request Processing device is handled the device of one second pick event.
12, the equipment of claim 11 is characterized in that:
This principal computer comprises the device that is used to distinguish first pick event and second pick event.
13, the equipment of claim 12 is characterized in that:
Described discriminating device comprises and is used for producing a device that is used for each pick event.
14, the equipment of claim 13 is characterized in that:
Be used to ask the device of first pick event to comprise one first application programmer, be used for utilizing first zone that shows.
15, the equipment of claim 14 is characterized in that:
Be used to ask the device of second pick event to comprise that is utilized one second zone second application programmer that shows.
CN92104928A 1991-07-23 1992-06-22 Method and apparatus for processing concurrent pick events Expired - Fee Related CN1025385C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73626591A 1991-07-23 1991-07-23
US736,265 1991-07-23

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CN1025385C true CN1025385C (en) 1994-07-06

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JP (1) JPH05205026A (en)
KR (1) KR930002934A (en)
CN (1) CN1025385C (en)
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CA (1) CA2068016A1 (en)
WO (1) WO1993002409A1 (en)

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Publication number Priority date Publication date Assignee Title
EP0665527B1 (en) * 1994-01-28 1999-05-06 Sun Microsystems, Inc. Flat panel display interface for a high resolution computer graphics system
EP0734010B1 (en) * 1995-03-21 2005-01-26 Sun Microsystems, Inc. Video frame signature capture
US8289333B2 (en) * 2008-03-04 2012-10-16 Apple Inc. Multi-context graphics processing

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Publication number Priority date Publication date Assignee Title
US5255359A (en) * 1989-10-23 1993-10-19 International Business Machines Corporation Picking function for a pipeline graphics system using hierarchical graphics structures
US5148521A (en) * 1989-10-23 1992-09-15 International Business Machines Corporation Pick data queue for pipelined graphics system

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CA2068016A1 (en) 1993-01-24
KR930002934A (en) 1993-02-23
JPH05205026A (en) 1993-08-13
BR9202486A (en) 1993-03-16
CN1068906A (en) 1993-02-10
WO1993002409A1 (en) 1993-02-04

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