CN104299544B - A kind of head up displays and the method improving its timesharing Overlapping display effect - Google Patents
A kind of head up displays and the method improving its timesharing Overlapping display effect Download PDFInfo
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Abstract
The present invention relates to a kind of head up displays and the method improving its timesharing Overlapping display effect, belong to airborne display devices technical field.By producing two path control signal R/S1 and R/S2, within the head up displays display cycle, control R/S1 and R/S2 height change and represent that head up displays is with grating/stroke timesharing stacked system work, the rising edge sequential of R/S1 with R/S2 is identical, the trailing edge of the R/S2 trailing edge sequential delay adjustments time relative to R/S1, on the basis of RS1 trailing edge, within the setting time, it is low by character generator logic control high-lightness signal, force without display, within the rising edge setting time of R/S1 Yu R/S2, it is low for controlling high-lightness signal, forces without display.The method carries out time delay when R/S signal rising edge (grating change stroke), trailing edge (stroke darkening grid) and shows, solve the character first stroke of a Chinese character under head up displays grating/stroke overlaying state and bright line occurs, there is flexural deformation problem in grating top, improves head up displays image display effect.
Description
Technical field
The present invention relates to a kind of head up displays and the method improving its timesharing Overlapping display effect, belong to airborne aobvious
Show equipment technical field.
Background technology
Head up displays projects the symbol needing display in the dead ahead visual field of driver exactly, makes various
Information, together with real outdoor scene information superposition, observes judgement state of flight for pilot, so showing on it
Symbol and image must be clear, stable.
At present main flow head up displays has three kinds of mode of operations: pure stroked character shows, pure raster video shows and
Grating/stroke timesharing Overlapping display.Head up displays mainly includes symbol generator module, driver module
With parts such as CRT tube.Symbol generator module output services mode control signal R/S1 and R/S2, display is driven
Dynamic model block according to operating mode control signals select pure stroke information (Z high-lightness signal and X, y deflection signal) or
The pure grating information of person (video signal and row, field sawtooth signal), drives CRT tube aobvious on head up displays
Show pure stroked character or pure raster video or grating/stroke overlay drafting.
Some current head up displays show pure grating picture, some be character and video superimpose complete after look squarely
Display shows.Owing to character and video are exported by same signal, brightness and contrast changes simultaneously, causes
Therebetween stereovision is not strong, and the character information on head up displays video background is unclear, serious impact
The display effect of head up displays.Use a road R/S signal to control head up displays grating/stroke timesharing to fold
When adding display, when R/S signal rising edge (grating change stroke), trailing edge (stroke darkening grid), due to
The intrinsic speed of response of CRT image source causes electron beam distance can not put when jumping a little putting in place, cause the character first stroke of a Chinese character
Bright line occur, there is flexural deformation problem in grating top, have impact on head up displays picture quality.
Summary of the invention
It is an object of the invention to provide a kind of head up displays and the method improving its timesharing Overlapping display effect,
To solve when R/S signal rising edge (grating change stroke), trailing edge (stroke darkening grid), due to
The intrinsic speed of response of CRT image source causes electron beam distance can not put when jumping a little putting in place, cause character to rise
Pen occurs that flexural deformation problem occur in bright line, grating top.
The technical scheme of head up displays of the present invention is: a kind of head up displays, sends out including the symbol being sequentially connected with
Raw device module, driver module and CRT tube, symbol generator module includes that character produces logical block, described
Symbol generator module in also include mode of operation control unit, this mode of operation control unit be used for basis
Bus line command generates two-way synperiodic operating mode control signals R/S1 and R/S2, in head up displays display week
In phase, control R/S1 and R/S2 height change and represent that head up displays works with grating/stroke timesharing stacked system,
The rising edge sequential of R/S1 with R/S2 is identical, the trailing edge of the R/S2 trailing edge sequential delay adjustments relative to R/S1
Time, on the basis of RS1 trailing edge, within the setting time, by character generator logic control high-lightness signal
For low, force without display.
Described within the rising edge setting time of R/S1 Yu R/S2, it is low for controlling high-lightness signal, forces without display.
Described head up displays is under grating/stroke timesharing overlay model, and driver module receives height and becomes
R/S1 and the R/S2 pulse signal changed, selects X, y deflection signal and Z high-lightness signal loading at CRT picture during high level
On source, show pure stroke picture, during low level, select video signal and row, field sawtooth signal loading at CRT
On image source, show pure grating picture.
Described head up displays under pure stroke pattern, driver module receive high level R/S1 and
R/S2 signal, selects X, y deflection signal and Z high-lightness signal loading on CRT image source, shows pure stroke
Picture；Under pure grating mode, driver module receives low level R/S1 and R/S2 signal, selects
Video signal and row, field sawtooth signal loading, on CRT image source, show pure grating picture.
The present invention improves the technical scheme of head up displays timesharing Overlapping display effect method: a kind of raising is looked squarely
The method of display timesharing Overlapping display effect, the method produces two path control signal R/S1 and R/S2, is looking squarely
In the display display cycle, control R/S1 and R/S2 height change and represent that head up displays is with grating/stroke timesharing
Stacked system works, and the rising edge sequential of R/S1 with R/S2 is identical, the decline relative to R/S1 of the trailing edge of R/S2
Along the sequential delay adjustments time, on the basis of RS1 trailing edge, within the setting time, patrolled by character generator
It is low for collecting control high-lightness signal, forces without display.
Described within the rising edge setting time of R/S1 Yu R/S2, it is low for controlling high-lightness signal, forces without display.
Described under grating/stroke timesharing overlay model, R/S1 and the R/S2 pulse signal of height change is at high electricity
Show pure stroke picture at ordinary times, during low level, show pure grating picture.
Described under pure stroke pattern, R/S1 and the R/S2 signal of high level, show pure stroke picture；?
Under pure grating mode, low level R/S1 and R/S2 signal, show pure grating picture.
The invention has the beneficial effects as follows: by producing two path control signal R/S1 and R/S2, at head up displays
In display cycle, control R/S1 and R/S2 height change and represent that head up displays is with grating/stroke timesharing superposition
Mode works, and the rising edge sequential of R/S1 with R/S2 is identical, the decline relative to R/S1 of the trailing edge of R/S2
Along the sequential delay adjustments time, on the basis of RS1 trailing edge, within the setting time, patrolled by character generator
It is low for collecting control high-lightness signal, forces without display, within the rising edge setting time of R/S1 Yu R/S2, and control
High-lightness signal is low, forces without display.The method is at R/S signal rising edge (grating change stroke), trailing edge
Carry out time delay time (stroke darkening grid) to show, solve character under head up displays grating/stroke overlaying state
The first stroke of a Chinese character occurs that flexural deformation problem occur in bright line, grating top, improves head up displays image display effect.
Accompanying drawing explanation
Fig. 1 is that head up displays character of the present invention generates the structural representation driven；
Fig. 2 is R/S control signal sequencing contro schematic diagram in the embodiment of the present invention；
Fig. 3-a is to improve front head up displays grating/stroke overlay drafting sectional drawing；
Fig. 3-b is to improve front head up displays grating/stroke overlay drafting sectional drawing；
Fig. 4 is head up displays grating/stroke overlay drafting sectional drawing after improvement.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further described.
A kind of embodiment of the head up displays of the present invention
As it is shown in figure 1, the head up displays of the present invention includes generator module, driver module and CRT tube,
Symbol generator module includes that character produces logical block and R/S signal controls block, and wherein character produces logical block use
In producing X defection signal, y deflection signal and Z high-lightness signal, R/S signal controls block for ordering according to bus
Order produces two-way operating mode control signals R/S1 and R/S2, and driver module selects pure according to control signal
Stroke information (Z high-lightness signal and X, y deflection signal) or pure grating information (video signal and row, field saw
Tooth ripple signal), drive CRT tube to show pure stroked character or pure raster video or light on head up displays
Grid/stroke time-division overlay drafting, the operation principle of this head up displays is as follows:
R/S signal in symbol generator module controls module unit and produces mode of operation control letter according to bus line command
Number R/S1 and R/S2, R/S1 and R/S2 high level represents that head up displays works in pure stroke mode, low electricity
Flat expression head up displays works with pure raster fashion, and R/S1, R/S2 are the pulse signals of a cycle 20ms,
The rising edge sequential of R/S1 with R/S2 is identical, the trailing edge sequential time delay relative to R/S1 of the trailing edge of R/S2
The setting time (being 128us here), under pure stroke pattern, driver module receives the R/S1 of high level
With R/S2 signal, select X, y deflection signal and Z high-lightness signal loading on CRT image source, show pure stroke
Picture；Under pure grating mode, driver module receives low level R/S1 and R/S2 signal, selects to regard
Frequently signal and row, field sawtooth signal loading are on CRT image source, show pure grating picture；In grating/stroke
Under timesharing overlay model, driver module receives R/S1 and the R/S2 pulse signal of height change, high level
Time select X, y deflection signal and Z high-lightness signal loading on CRT image source, show pure stroke picture, low electricity
Select video signal and row, field sawtooth signal loading at ordinary times on CRT image source, show pure grating picture.?
Under grating/stroke timesharing overlay model, the trailing edge of the R/S2 trailing edge sequential time delay 128us relative to R/S1,
On the basis of RS1 trailing edge, within the 128us time, it is low by character generator logic control high-lightness signal,
Forcing without display, row, field sawtooth are many 128us synchronizing time, solve raster video top under overlay model
End flexural deformation problem；On the basis of RS1 rising edge, within the 10us time, by character generator logic
Control high-lightness signal be low, force without display, solve stroked character first stroke of a Chinese character bright line problem, improve look squarely aobvious
Show device display effect.For the head up displays of different model, pass of above-mentioned time can be finely tuned by logical design
System, improves head up displays display effect.
Fig. 2 is shown in by R/S control signal output schematic diagram, illustrates as a example by the head up displays shown in Fig. 1,
The video source form that in this example, head up displays video shows is PAL-D, and in Fig. 2,21 represent R/S1 signal,
22 represent R/S2 signal, and 23 represent high-lightness Z_video signal.Draw after Z_video signal and logical relation
Final high-lightness signal Z.
A kind of embodiment improving head up displays timesharing Overlapping display effect method of the present invention
The method improving head up displays timesharing Overlapping display effect of the present invention is by producing two path control signal
R/S1 and R/S2, within the head up displays display cycle, controls R/S1 and R/S2 height change expression and looks squarely
Display with the work of grating/stroke timesharing stacked system, at control signal rising edge (grating change stroke) and
During trailing edge (stroke darkening grid), the laggard row of time delay shows, the rising edge sequential of R/S1 with R/S2 is identical, R/S2
Trailing edge trailing edge sequential delay adjustments time relative to R/S1, on the basis of RS1 trailing edge, setting
In fixing time, it is low by character generator logic control high-lightness signal, forces without display.
Fig. 2 is shown in by control signal output schematic diagram in the present embodiment, and the head up displays video in the present embodiment shows
The video source form shown is PAL-D, and in Fig. 2,21 represent R/S1 signal, and 22 represent R/S2 signal, 23 tables
Show high-lightness Z_video signal, after Z_video signal and logical relation, draw final high-lightness signal Z, R/S2
The trailing edge trailing edge sequential time delay 128us relative to R/S1, on the basis of RS1 trailing edge, at 128us
In time, being low by character generator logic control high-lightness signal, force without display, row, field sawtooth are many
The 128us synchronizing time, solve raster video tip flexion problem on deformation under overlay model；Rise with RS1
On the basis of Yan, within the 10us time, it is low by character generator logic control high-lightness signal, forces without aobvious
Show, solve stroked character first stroke of a Chinese character bright line problem, improve head up displays display effect, putting down of different model
For display, above-mentioned time relationship can be finely tuned by logical design, improve head up displays display effect.
As it is shown on figure 3, before being provided without the solution of the present invention, at R/S signal rising edge, (grating becomes pen
Draw), trailing edge (stroke darkening grid) time, due to the intrinsic speed of response of CRT image source cause electron beam length away from
Can not put in time jumping and a little put in place, there is flexural deformation problem in bright line, grating top to cause the character first stroke of a Chinese character to occur,
Head up displays grating/stroke overlay drafting sectional drawing occurs oil anamorphose phenomenon A and image bright line phenomenon B；
After using the solution of the present invention, the display effect of head up displays grating/stroke overlay drafting significantly improves, and changes
Entering rear schematic diagram and see Fig. 4, image AA and BB image after improvement are steady and audible.
It should be noted last that: above example is only with illustrating and not to limit technical scheme, no
Different with instance parameter values, although the present invention being described in detail with reference to above-described embodiment, this area general
Lead to and skilled artisan understands that；Still the present invention can be modified or equivalent, without deviating from this
Any modification or partial replacement of bright spirit and scope, it all should be contained ought in scope of the presently claimed invention
In.
Claims (8)
1. a head up displays, including the symbol generator module, driver module and the CRT that are sequentially connected with
Pipe, symbol generator module includes that character produces logical block, it is characterised in that described symbol generator module
In also include mode of operation control unit, this mode of operation control unit for according to bus line command generate two-way
Synperiodic operating mode control signals R/S1 and R/S2, within the head up displays display cycle, controls R/S1
Represent that head up displays works with grating/stroke timesharing stacked system with R/S2 height change, R/S1's Yu R/S2
Rising edge sequential is identical, and the trailing edge of the R/S2 trailing edge sequential delay adjustments time relative to R/S1, with RS1
On the basis of trailing edge, within the setting time, produce logical block to control high-lightness signal to be low by character, force nothing
Display.
Head up displays the most according to claim 1, it is characterised in that at the rising edge of R/S1 Yu R/S2
In the setting time, it is low for controlling high-lightness signal, forces without display.
Head up displays the most according to claim 2, it is characterised in that described head up displays is at light
Under grid/stroke timesharing overlay model, driver module receives R/S1 and the R/S2 pulse signal of height change,
Select X, y deflection signal and Z high-lightness signal loading during high level on CRT image source, show pure stroke picture, low
Select video signal and row, field sawtooth signal loading during level on CRT image source, show pure grating picture.
Head up displays the most according to claim 2, it is characterised in that described head up displays is pure
Under stroke pattern, driver module receive high level R/S1 and R/S2 signal, select X, y deflection signal and
Z high-lightness signal loading, on CRT image source, shows pure stroke picture；Under pure grating mode, driver module
Receive low level R/S1 and R/S2 signal, select video signal and row, field sawtooth signal loading at CRT picture
On source, show pure grating picture.
5. the method improving head up displays timesharing Overlapping display effect, it is characterised in that the method is produced
Raw two path control signal R/S1 and R/S2, within the head up displays display cycle, control R/S1 and R/S2 height and become
Change and represent that head up displays is with grating/stroke timesharing stacked system work, the rising edge sequential phase of R/S1 with R/S2
With, the trailing edge of the R/S2 trailing edge sequential delay adjustments time relative to R/S1, on the basis of RS1 trailing edge,
Within the setting time, produce logical block to control high-lightness signal to be low by character, force without display.
The method of raising head up displays timesharing Overlapping display effect the most according to claim 5, its feature
Being, within the rising edge setting time of R/S1 Yu R/S2, it is low for controlling high-lightness signal, forces without display.
The method of raising head up displays timesharing Overlapping display effect the most according to claim 6, its feature
Being, under grating/stroke timesharing overlay model, R/S1 and the R/S2 pulse signal of height change is at high level
Time show pure stroke picture, show pure grating picture during low level.
The method of raising head up displays timesharing Overlapping display effect the most according to claim 6, its feature
It is, under pure stroke pattern, R/S1 and the R/S2 signal of high level, show pure stroke picture；At pure grating
Under pattern, low level R/S1 and R/S2 signal, show pure grating picture.
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| CN105117192B (en) * | 2015-09-09 | 2018-07-20 | 小米科技有限责任公司 | Method for information display and device |
| CN112422769B (en) * | 2020-11-22 | 2022-11-01 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display for realizing synchronous recording control of characters and videos |
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| JP2901422B2 (en) * | 1992-07-20 | 1999-06-07 | 日本電気アイシーマイコンシステム株式会社 | Character display device |
| JPH10260670A (en) * | 1997-03-18 | 1998-09-29 | Victor Co Of Japan Ltd | Image display device |
| CN1984262A (en) * | 2005-12-15 | 2007-06-20 | 任戈亮 | System for processing video character overlap |
| CN201340720Y (en) * | 2008-12-26 | 2009-11-04 | 厦门雅迅网络股份有限公司 | AV screen display device |
| CN101727875B (en) * | 2009-12-24 | 2012-09-05 | 中国航空工业集团公司第六三一研究所 | Graphic processing apparatus and method |
| CN102036038A (en) * | 2011-01-07 | 2011-04-27 | 天津天地伟业数码科技有限公司 | Multi-channel OSD video superposition controller |
| CN102523417B (en) * | 2011-12-28 | 2014-05-14 | 深圳市理邦精密仪器股份有限公司 | Video system conversion method and conversion device in ultrasonic imaging equipment |
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