CN1118552A - Emulation of computer monitor in a wide screen television - Google Patents
Emulation of computer monitor in a wide screen television Download PDFInfo
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- CN1118552A CN1118552A CN94113853A CN94113853A CN1118552A CN 1118552 A CN1118552 A CN 1118552A CN 94113853 A CN94113853 A CN 94113853A CN 94113853 A CN94113853 A CN 94113853A CN 1118552 A CN1118552 A CN 1118552A
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- synchronizing signal
- vga
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/391—Resolution modifying circuits, e.g. variable screen formats
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/04—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using circuits for interfacing with colour displays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
An video by using a wide screen television receiver operated by 2fH such as VGA(video graphics adapter) or SVGA(super VGA). VGA or SVGA board 84 is programmed by a computer 80 so that RGB video signals indicating video having scanning lines of less number than the number of regular horizontal scanning lines of normal VGA or SVGA having a display aspect ratio of format of 4:3 are generated in order to generate video having an aspect ratio,for example 16:9, for displaying a wide format, and the polarity and the phase are converted as necessary so that each synchronizing signal of RGB video signals can be recognized by a processing circuit 52 of a wide screen television receiver.
Description
The present invention relates to use television set, wide screen television machine particularly, the technical field that computer monitor is simulated.
Present wide screen television machine in the prospectus of for example PCT/US91/03740, does not have the ability of RGB (red, green, the orchid) signal of display simulation formula computer.Therefore, to present television set, wide screen television machine its necessity of having made amendment particularly, the RGB input of the level that this modification can show television set to have separation and the analog computer of vertical synchronizing signal.
As mentioned above, present wide screen television machine is by its inner 2f
H(two horizontal rate scannings, for example Bian Cheng horizontal sweep) input/output module or circuit are accepted the analog rgb input signal.This module or circuit provide a kind of method, can be with the 2f of outside
HInput (RGB or YPrPb) is forwarded on the signal processing path of inner vision signal, and from common 1f
HThe descending 2f of incoming video signal transfer point to programme
HScanning, synchronizing signal then are from composite sync input (being used for the RGB input) or from the signal for the composite synchronizing signal (being used for the YPrPb input) of 1uma.
The VGA computer monitor (is 2f with 31.47KHz
H) horizontal frequency work.The existing ability of present wide screen television machine receives and shows the analog rgb input signal of 31.47KHz line frequency.Problem is, at present typical 2f
HInput/output module can only be with the composite synchronizing signal of RGB input, and can not use level and vertical synchronizing signal from the separation of VGA computer input.
The invention provides VGA Display and SVGA computer input (comprising chart and literal) necessary Method and circuits on the wide screen television machine, still can keep original repertoire of wide screen television machine simultaneously.
The method that shows the video that produces in the computer on the wide screen television machine according to the present invention program may further comprise the steps: first video circuit in the computer is programmed, make it to use the common horizontal line number when being less than layout display frame, this is less than the picture that common horizontal line number causes and has wide format display ratio; Make and produce a 2f in first video circuit of having programmed
HRgb video signal, this signal list illustrates the picture of the synchronizing signal that comprises separation; This synchronizing signal is converted to can be by the form of second video circuit acceptance in the television set, and wherein second video circuit is suitable for the 2f of the separative synchronizing signal of receiving belt
HRgb video signal; And, with 2f
HRgb video signal and switched synchronizing signal are coupled on second video circuit, so that show that on the wide screen television machine wide format shows the picture of ratio.
Monitor according to a kind of wide screen television receiver/computer of the present invention program comprises: the video processing circuits in television set, and in order to receive a 2f
HRgb video signal, this vision signal have from and the synchronizing signal of the separation of a signal source of non-computer; And a conversion equipment is in order to a 2f that will produce with computer
HThe synchronizing signal of the separation that rgb video signal interrelates (i.e. VGA level, VGA is vertical for VGA HOR., VGA VERT.) converts the form that can be accepted by video circuit to.The synchronizing signal that is produced by computer wherein is converted into one of at least has opposite polarity, and perhaps, the synchronizing signal that is produced by computer has wherein been done one of at least phase shift.2f by the computer generation
HRgb video signal is from a programmable video circuit, and this circuit is programmed to use the common horizontal line number when being less than layout display frame, and this is less than the displaying ratio that picture that common horizontal line number causes has wide format.Programmable video circuit can be worked by VGA or SVGA mode.Described receiver/monitor also comprises a coupling device, in order to 2f
HRgb video signal and switched synchronizing signal are coupled on the video circuit in the television receiver.
Fig. 1 is the schematic diagram of synchronizing signal transducer of the present invention;
Fig. 2 is the schematic diagram of another embodiment of synchronizing signal transducer of the present invention;
Fig. 3 is the system diagram that can be used for the wide screen television receiver part among the present invention.
Present popular wide screen television machine, for example described in the PCT/US91/03740, the composite sync input signal of negative sense is used in expectation, and its time is imported consistent with the analog rgb video of being got in touch.A PROSOCAN that example is a Thomson company as this wide screen television machine
The wide screen television machine, its chassis label is CTC-172, has used 16: 9 standard city picture tube of a Thomson W 86 (34V).Rgb video input both can be to be compiled into 525 row formats with 31.47KHz horizontal line frequency and the vertical frame frequency of 59.94Hz, also can be the forms of interleaved 1050 row with 31.47KHz horizontal line frequency and having of the vertical field frequency of 59.94Hz of two of every frames.
For two prime reasons, for this wide screen television machine, its VGA imports available interlacing scan.The first, the horizontal line frequency of all VGA patterns all is 31.47KHz, and this line frequency with present wide screen television machine is consistent.The line frequency that changes television set may some difficulty to adapt to other many synchronous computers input pattern.The second, though be different for different its frame frequencies of VGA pattern, this can adjust by the high low degree of aanalogvoltage (analog zoom voltage) that changes on the vertical deflection circuit in the television set.Under VGA figure table schema (VGAGraphics mode) situation, the frame frequency of 59.94Hz " is expired " width of cloth pattern with television set and is met.Because television set can be tending towards " expiring " width of cloth pattern (this only pattern can be used for having the RGB input of present TV software) automatically when the RGB input is selected as desiring show state, so there is no need to change the high low degree of aanalogvoltage.Under VGA type mode (VGA Text mode) situation, frame frequency is 70.08Hz, and therefore, for being full of fluoroscopic VGA type mode in vertical direction fully, the high low degree of the aanalogvoltage on the vertical panel need increase.
Can be described below for automatic synchronous backward: when vertical synchronizing signal was forward, the vertical synchronizing signal behind the integration was low (low logic level, for example 0 volt).Therefore, for the output that will become negative sense, vertical synchronizing signal must be oppositely.When vertical synchronizing signal was negative sense, the vertical synchronizing signal behind the integration was high (high logic level, for example 5 volts).Therefore, because vertical synchronizing signal has been negative sense, so need be not reverse again.
Because the VGA synchronizing signal of separating is to have very a high duty cycle (for the negative sense synchronizing signal) or the very signal of the Transistor-Transistor Logic level of low fill factor (for the forward synchronizing signal), therefore these synchronizing signals being carried out integration just can provide Transistor-Transistor Logic level signal corresponding to sync direction.The negative sense synchronizing signal is carried out integration produce a logic high signal, produce a logic low signal and the forward synchronizing signal is carried out integration.
First embodiment of synchronous converter shown in Fig. 1 10.The dotted line in Fig. 1 lower right corner is expressed each element away from the position of synchronous converter 10.Forming the resistance R 1 of a suitable integrator and the value of capacitor C 1 should be chosen to big to can be provided enough times of integration, make its logic state of the unlikely change of voltage of pulsation, should be chosen to little simultaneously to when the user transfers it to VGA mode word (otherwise or) by the VGA graph mode, making circuit change state rapidly.
Can not only make up vertical and horizontal-drive signal from the separation of computer to form required composite synchronizing signal.Under VGA type mode situation, this composite synchronizing signal may vicious vertical synchronization polarity.Before making up,, need make vertical synchronizing signal reverse for VGA type mode situation; And for VGA figure table schema situation, need be not reverse.Have, when the user became VGA type mode (otherwise or) with it by VGA figure table schema, this reverse procedure should be able to carry out in " automatically ", need not the user import again.
An input input of fellow disciple 12 is from the vertical synchronizing signal of computer, i.e. VGAVERT.; Its another input input is from the vertical synchronizing signal of the integration at the capacitor C 1 intersection point place of resistance R 1.Fellow disciple 12 output is then always exported the vertical sync pulse of negative sense.
Other aspects that produce the negative sense composite synchronizing signal relate to the horizontal pulse width and import relevant phasing with the RGB analog video.The pulse duration of this horizontal-drive signal is receptible wideer than television set institute, if it is not reduced, television set will be made mistakes aspect these wide horizontal synchronization pulses treating, as treating vertical sync pulse, so that television set just can not self reach is synchronous.Therefore, the width of negative sense horizontal synchronization pulse must dwindle before the combination of itself and negative sense vertical sync pulse.In addition, because the phasing and the television set of the horizontal synchronization pulse relevant with the input of analog rgb video are desired different, therefore the phasing of this pulse also need be adjusted before making up with the negative sense vertical pulse.
Change the phasing of negative sense horizontal synchronization pulse and width can with three non--triggering (non-retriggerable) one-shot multivibrator is finished again, is referred to as " single trigger (one-shot) " usually.The pulse duration of first single trigger 18 is less than a horizontal width, promptly less than 31.78 microseconds.The width of single trigger output signal depends on resistance R 6 and capacitor C 2.With pointed width, just can accomplish to make first single trigger to trigger each bar horizontal line.If the pulse duration of single trigger 18 is greater than a horizontal line, then single trigger 18 just can only trigger every other horizontal line.If the pulse duration of single tentaculum 18 is greater than two horizontal lines, then single trigger 18 just can only trigger every the third horizontal line, or the like.The pulse duration of second single trigger 20 is located horizontal synchronization pulse, has promptly adjusted the phase place of horizontal synchronization pulse with respect to the input of analog rgb video.The width of the output pulse of single trigger 20 depends on resistance R 7, variable resistor VR2 and capacitor C 3.The width of horizontal synchronization pulse is controlled by the pulse duration of the 3rd single trigger 22.The width of the output pulse of single trigger 22 depends on resistance R 8 and capacitor C 4.
Level and vertical synchronizing signal component are being made logical combination with door 16.Be output as the negative sense composite synchronizing pulse with door 16.Therefore, no matter still be the VGA type mode for the VGA chart, composite synchronizing pulse always is negative sense.For the composite synchronizing signal of RGB input, what television set needed is exactly this polarity (being negative sense polarity).
The voltage divider that is formed by resistance R 2 and R3 provides an input signal to transistor Q1 (formation emitter follower).Composite synchronizing signal (COMPOSITE SYNC) is an about 300mV
P-pThe negative sense composite synchronizing signal, this signal leads to 2f by the resistance R 11 of 75 Ω
HOn input/output module 52 (see figure 3)s.The emitter follower of NPN transistor Q1 also provides essential electric current, to transfer to output resistance R11.For example on the CTC-172 chassis, output resistance R11 can insert through a composite sync input jack of television set back.
Next problem is to determine to exist any VGA pattern, thereby can change the high low degree of aanalogvoltage in the suitable moment.When the user became VGA type mode (otherwise or) with VGA figure table schema, the high low degree of aanalogvoltage preferably can change automatically, with keep screen during the VGA type mode at the full width of cloth of vertical direction.The method that has a kind of definite VGA pattern to exist.In VGA figure table schema, vertical synchronizing signal is a negative sense; And in the VGA type mode, vertical synchronizing signal is a forward.Utilize the polarity of vertical synchronizing signal, what can represent to exist is any VGA pattern, so can increase the analog electrical piezoelectricity low degree during the VGA type mode, makes screen expire the width of cloth in vertical direction.Below will further explain the high low degree of this aanalogvoltage.
As noted above, must cause the high low degree of suitable aanalogvoltage, so that no matter be, screen is full of in vertical direction fully to VGA figure table schema or to the VGA type mode.The vertical field frequency of VGA figure table schema is identical (being 59.94Hz) with desired RGB input pattern, therefore need not change the high low degree of aanalogvoltage.But in the VGA type mode, vertical field frequency is 70.08Hz, therefore should increase the high low degree of aanalogvoltage, so that whole screen is expired the width of cloth in vertical direction.
At general television set duration of work (referring again to Fig. 3), the Zoom data of the high low degree of expression aanalogvoltage (height intensity of variation data) provide to the D/A DAC62's in widescreen processor (WSP) module 56.Only exist and user when selecting the VGA literal on phosphor screen, to show, just need increase the high low degree of aanalogvoltage so that the VGA literal is full of phosphor screen in vertical direction at the VGA type mode.So, when the input of VGA literal exists but is not selected, when perhaps being carved with certain signal that is different from the VGA literal existing when the RGB input signal enters the wide screen television machine, this logical process just can make television set operate as normal (promptly not changing the high low degree of aanalogvoltage).
A kind of logic hardware has been used in running from the logical signal of the vertical synchronizing signal of the integration of VGA type mode (being the forward vertical synchronizing signal of low fill factor) with from the SEL_EXT logical signal of control system 60.Each signal all is input to NOR gate 14, has only the output that this NOR gate just produces logic high when two inputs are low level.Only when the VGA type mode existed, the vertical synchronizing signal of integration just was low level; And only when the user selects the input of high-res (High Resolution) (being RGB) and desire to be presented at it on phosphor screen, the SEL_EXT signal just is low level.Logic high from NOR gate 14 is exported by resistance R 4 and R5 and variable resistor VR1 dividing potential drop.ZOOM_OUT adjusts voltage and was adjusted and cushioned by the NPN transistor Q2 that constitutes emitter follower by variable resistor VR1 before it is sent to resistance R 9 on the vertical panel 64.The output of DAC62 in the WSP module 56 before it is coupled to resistance R 9 in the vertical control circuit 64 earlier by capacitor C 5 and resistance R 10 filtering.When NOR gate 14 is output as when low, little by voltage after partial, be not enough to overcome the Vbe threshold value of transistor Q2, so Q2 ends, to the not influence of the high low degree of aanalogvoltage.
The high low degree ZOOM_OUT of voltage is adjusted in simulation can reach 10 volts of DC.String has a Schottky diode CR1 on the emitter of transistor Q2, with being connected of protection emitter and base stage, prevents to be output as destruction when hanging down in NOR gate 14.
Another kind of synchronous converter 10 ' is shown in Fig. 2.Vertical synchronizing signal behind vertical synchronizing signal VGA VERT. and the integration is input to NOR gate 30.The output of NOR gate 30 is connected on the input of NOR gate 42.Vertical synchronizing signal VGA VERT. receives on two inputs of NOR gate 32 simultaneously, is connected into a reverser.Vertical synchronizing signal behind the integration is received on two inputs of NOR gate 34 simultaneously, also is connected into a reverser.NOR gate 32 and 34 output are received on two inputs of NOR gate 36.Second input of the output termination NOR gate 42 of NOR gate 36.The output of single trigger 22 is received on two inputs of NOR gate 40 simultaneously, is connected into a reverser.The output of NOR gate 40, i.e. the output of CONVERTED HOR.SYNC and NOR gate 42, i.e. CONVERTED VERT.SYNC receives two inputs of NOR gate 44, and this NOR gate combines these two switched synchronizing signals.Other parts of synchronous converter 10 ' are identical with synchronous converter 10, no longer repeat here.The parts identical label identical among the figure with it with Fig. 1.
Fig. 3 illustrates the wide screen television machine 50 part system diagram of (being equivalent to CTC-172 usually).Fig. 3 and corresponding explanation are not attempted to remove to describe the wide screen television machine comprehensively, but will show the working method of the synchronous converter of mentioning in the literary composition that can be used for the wide screen television machine.Synchronous converter 10 or 10 ' reception receives the SEL_EXT signal of the control circuit 60 in the screen processor module 56 of comforting oneself from the synchronous input signal of computer, and to 2f
HInput/output module 52 provides switched composite synchronizing signal, and provides ZOOM_OUT control voltage to vertical circuit 64.Carry COMPOSITE SYNC signal by an aerial lug; And carry SET_EXT and ZOOM_OUT signal by interconnector.2f
HInput/output module 52 offers deflection circuit 66 and vertical circuit 64 with selected level respectively with vertical driving signal (SEL_HOR_DRIVE and SEL_VERT DRIVE).2f
HInput/output module 52 provides the vertical blanking signal (SEL_VERTBLANK) of a SEL_HOR_DRIVE signal and a selection simultaneously to mixed blanking generator 58.The mixed blanking generator then offers composite blanking signal main signal plate 68.At last, 2f
HAlso (Y, R-Y B-Y) transport to main signal plate 68 to input/output module 52 with YUV.Luminance signal can also be carried by an edge replacement circuit (edgereplacement circuit) 54, to improve definition.
Fig. 3 also shows computer 80 as VGA or SVGA video signal source.Computer 80 has a video processing circuits 82, and it can be for example VGA or SVGA circuit board.Video processing circuits 82 together with all the other functions of computer, is subjected to a microprocessor (μ p) 84 controls.Video processing circuits 82 provides to 2f
HThe signal source of the outside rgb video signal of input/output module 52, also provide to synchronous converter 10 and 10 ' the signal source of synchronizing signal.
Because the VGA pattern has used all videos to broadcast the time (entire active videotime), therefore horizontal width and vertical height must reduce from the existing set point of its customary television set, so that the user can see the whole literal that computer sends or the demonstration of chart.Simultaneously, because through 2f
HInput/output module 52 is come the wide screen processing module 56 of analog rgb vision signal bypass of television set, and the aspect ratio that therefore is presented at the VGA material on the CTC-172 receiver for example is 16 * 9.So,, therefore, on television set, will be elongated by level at the figure of " correctly " performance on the computer monitor because chart that the VGA video card is produced and literal are to desire to be presented on 4 * 3 the picture tube.Thereby this problem can be exported the vision signal (taking advantage of one 4/3 factor) that a level quickened and solves by in computer VGA being sticked into row programming.But this will stay a part of shadow on phosphor screen, and the wide screen characteristics that go up receiver of no use.Solution is that computer is programmed preferably, to export the image that a wide format shows ratio, for example 16 * 9 image.
Microsoft
Windows
Software provides a kind of flexible GraphicalUser Interface (GuI, visual user's interface), and it can play the effect that changes various screen sizes and esolving degree.Its video demonstration situation depends on the visual display interface program GDI.EXE (GDI) of the Windows that sends, and with the dynamic line that is each dedicated video systems autocracy
(Dynamic Line Library display drivermodules) is relevant for file display driver module.
From more basic angle, Windows
The GUI system works on the video BIOS basis of software, and it has determined the form of video picture dot and the sequential that is produced by image board hardware.General display driver comprises for VGA (640 * 480 picture dots), SVGA (800 * 600 picture dots) and 1024 * 768 some kinds that picture dot is used.The horizontal picture dot number of all these systems all is identical with the ratio of vertical picture dot number, and promptly its format display ratio example is 4 * 3, corresponding to 4: 3 ratio of common cathode ray tube picture.This arrangement can be imagined will set up some picture dots that are box-shaped (square pixels), and they need some software.
When software showed with 4: 3, then can cause new problem.Problem is to expand horizontal sweep and makes it to be full of phosphor screen, only extends this method of grating and just equals each picture dot is elongated 1/3 in the horizontal direction but can infer, so, normal Windddows
The shape that Program Manager (windows program software) looks has just changed.More serious example is Kodak
The video of Photo-CD.Can suppose that its picture dot is shaped as square when real 35mm video is converted to video image, level is elongated picture dot and is made it to be full of phosphor screen and will make anamorphose, thereby shows the video that a width of cloth horizontal direction has been elongated.This just needs new demonstration BIOS and Windows
Display driver is perhaps revised existing software.
There is a kind of method to can be used for revising the existing software of a cover.From 4: the 3SVGA driver is set about, and vertical picture dot number (being the horizontal line number) must reduce to a factor, so that be to produce 16: 9 format display ratio on the basis of 800 square picture dots at horizontal width, promptly this factor is 800 * (9/16)=450 picture dot.This new grating has 800 * 450 picture dots, is the image of 450 row.So, Window
, the content of video driver file just obtains revising.Especially, this document " told " GDI software it must be by the work of which type of raster format.This GDI software should produce the displayed image that the horizontal line number is less than the horizontal line number (being 450 row) in the common SVGA form herein.Then, make the software of content in the CRT control register that is used for revising the video control card.Video sequential and row counting that these register controlled are produced by the CRT control chip on this video card.Change the row counting and can produce one 450 horizontal effective grating.At last, add the software program of this modification when starting working, so obtain not having out of proportion 16: 9 video displayed image of video shape in system.In other words, the picture dot that shows with wide screen still can quadrate.This video demonstration can directly be scanned on wide screen picture tube, and does not have the distortion of video shape ratio.In fact, be to allow video software and hardware directly come the form of arranging image with wide screen form.
The minimizing of horizontal scanning line number can cause some decline of vertical esolving degree, yet this method has been used in one and has been Dell
With the performance various types of materials, its scope is from commercial software (Word in 486 systems
, Excel
And Powerpoint
) to Kodak
Photo CD video and be used for Windows
Microsoft ' s Video, they all are based on the modification of adopting 16: 9 standard cities of Thomson W86 (34V) to carry out with the Thomson CTC-172 television receiver of picture tube, its effect is fairly good.
Claims (12)
1. method that shows the video that sends in the computer on the wide screen television machine is characterized in that may further comprise the steps:
First video processing circuits in the described computer is programmed, make it to use the common horizontal line number when being less than layout display frame, this is less than the picture that common horizontal line number causes and has wide format display ratio;
Make described first video processing circuits of having programmed produce a 2f
HRgb video signal, this signal list illustrates the described picture of the synchronizing signal that comprises separation;
Convert described synchronizing signal to can be accepted by second video processing circuits in the described television set form, wherein second video circuit is suitable for accepting having the 2f of the synchronizing signal of separation again
HRgb video signal; And
With described 2f
HRgb video signal and described switched synchronizing signal are coupled on described second video processing circuits, so that show that on described wide screen television machine described wide format shows the picture of ratio.
2. the method for claim 1 is characterized in that, described first video processing circuits in the described computer comprises a VGA plate.
3. the method for claim 1 is characterized in that, described first video processing circuits in the described computer comprises a SVGA plate.
4. the monitor of a wide screen television receiver/computer comprises:
Video processing circuits (52) in described television set is used to receive a 2f
HRgb video signal, this vision signal have from and the synchronizing signal of the separation of a signal source of non-computer; It is characterized in that also comprising:
A conversion equipment (10,10 ') is in order to a 2f that will produce with computer (80)
HThe synchronizing signal of the separation that rgb video signal interrelates (VGA HOR., VGA VERT.) converts to can be by the form of described video circuit (52) acceptance.
5. receiver/monitor as claimed in claim 4 is characterized in that, the described synchronizing signal that is produced by described computer (80) wherein is converted into one of at least has opposite polarity.
6. receiver/monitor as claimed in claim 4 is characterized in that, the described synchronizing signal that is produced by described computer (80) has wherein been done one of at least phase shift.
7. receiver/monitor as claimed in claim 4, it is characterized in that, the described synchronizing signal that is produced by described computer (80) wherein is converted into one of at least has opposite polarity, and the described synchronizing signal that is produced by described computer has wherein been done one of at least phase shift.
8. receiver/monitor as claimed in claim 4 is characterized in that, by the described 2f of described computer (80) generation
HRgb video signal is from a programmable video circuit (84).
9. receiver/monitor as claimed in claim 8, it is characterized in that, described programmable video circuit (84) is programmed to use the common horizontal line number when being less than layout display frame, and this is less than the displaying ratio that picture that common horizontal line number causes has wide format.
10. receiver/monitor as claimed in claim 8 is characterized in that, described programmable video circuit (84) can be worked by the VGA mode.
11. receiver/monitor as claimed in claim 8 is characterized in that, described programmable video circuit (84) can be worked by the SVGA mode.
12. receiver/monitor as claimed in claim 4 is characterized in that also comprising:
A coupling device is in order to described 2f
HRgb video signal and described switched synchronizing signal are coupled on the described video circuit (52) in the described television receiver.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9324341.8 | 1993-11-26 | ||
| SG9602061A SG93754A1 (en) | 1993-11-26 | 1993-11-26 | Emulation of computer monitor in a wide screen television |
| GB9324341A GB2284329B (en) | 1993-11-26 | 1993-11-26 | Emulation of computer monitor in a wide screen television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1118552A true CN1118552A (en) | 1996-03-13 |
| CN1076925C CN1076925C (en) | 2001-12-26 |
Family
ID=28043417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113853A Expired - Fee Related CN1076925C (en) | 1993-11-26 | 1994-11-26 | Emulation of computer monitor in a wide screen television |
Country Status (5)
| Country | Link |
|---|---|
| JP (2) | JP3038467B2 (en) |
| KR (1) | KR0160157B1 (en) |
| CN (1) | CN1076925C (en) |
| GB (1) | GB2284329B (en) |
| SG (1) | SG93754A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100404112B1 (en) * | 2001-04-03 | 2003-11-03 | 엘지전자 주식회사 | Method for displaying picture information of computer using television |
| CN101572073B (en) * | 2008-04-28 | 2012-03-14 | 北京竞业达数码科技有限公司 | System and method for video graphics array (VGA) signal transmission with long cable |
| KR101743776B1 (en) | 2010-09-28 | 2017-06-05 | 엘지전자 주식회사 | Display apparatus, method thereof and method for transmitting multimedia |
| WO2012044794A2 (en) * | 2010-09-30 | 2012-04-05 | Field Forensics, Inc. | Detection kit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06103300B2 (en) * | 1986-03-25 | 1994-12-14 | ピービー ダイアグノスティック システムズ，インコーポレーテッド | Biological diagnostic device |
| US5119082A (en) * | 1989-09-29 | 1992-06-02 | International Business Machines Corporation | Color television window expansion and overscan correction for high-resolution raster graphics displays |
| GB9012326D0 (en) * | 1990-06-01 | 1990-07-18 | Thomson Consumer Electronics | Wide screen television |
| CN1113546C (en) * | 1993-12-24 | 2003-07-02 | 中国民用航空学院 | Time division computerized stereo image display system |
| CN2181029Y (en) * | 1994-03-22 | 1994-10-26 | 王宇鹏 | TV/computer two-purpose display disc |
-
1993
- 1993-11-26 GB GB9324341A patent/GB2284329B/en not_active Expired - Fee Related
- 1993-11-26 SG SG9602061A patent/SG93754A1/en unknown
-
1994
- 1994-11-25 JP JP6330412A patent/JP3038467B2/en not_active Expired - Fee Related
- 1994-11-26 CN CN94113853A patent/CN1076925C/en not_active Expired - Fee Related
- 1994-11-26 KR KR1019940031619A patent/KR0160157B1/en not_active IP Right Cessation
-
1999
- 1999-08-04 JP JP22153399A patent/JP3160850B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR0160157B1 (en) | 1999-01-15 |
| GB2284329A (en) | 1995-05-31 |
| GB2284329B (en) | 1997-07-16 |
| JP3160850B2 (en) | 2001-04-25 |
| SG93754A1 (en) | 2003-01-21 |
| CN1076925C (en) | 2001-12-26 |
| KR950016333A (en) | 1995-06-17 |
| JP3038467B2 (en) | 2000-05-08 |
| GB9324341D0 (en) | 1994-01-12 |
| JP2000081865A (en) | 2000-03-21 |
| JPH07203385A (en) | 1995-08-04 |
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