CN102208176B - A kind of three-dimensional grating control device and system - Google Patents
A kind of three-dimensional grating control device and system Download PDFInfo
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- CN102208176B CN102208176B CN201110129385.8A CN201110129385A CN102208176B CN 102208176 B CN102208176 B CN 102208176B CN 201110129385 A CN201110129385 A CN 201110129385A CN 102208176 B CN102208176 B CN 102208176B
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- pwm signal
- grating
- voltage
- lcd
- output module
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- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/023—Display panel composed of stacked panels
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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)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses the device that a kind of 3D grating controls, voltage control module, for choosing the voltage in existing LCDdrive IC, or chooses the voltage that in existing LCD drive IC, bleeder circuit produces, as high level voltage, export to pwm signal output module; PWM output module, comprises four output pins, is connected with 3D grating, according to the voltage that the record in SRAM and voltage control module export, exports four pwm signals; SRAM, with output pin one_to_one corresponding, for recording high level corresponding to each time width of the pwm signal determined according to pwm signal parameter or low level.The invention also discloses the system that a kind of 3D grating controls, adopt device of the present invention and system, reduce the load of system, save cost, improve the Consumer's Experience of product.
Description
Technical field
The present invention relates to liquid crystal display (LCD) display and control field, refer to a kind of three-dimensional (3D, Dimension) controlling device of grating and system especially.
Background technology
At present, bore hole 3D Display Technique is progressively risen in LCD display field.From technology category, bore hole 3D Display Technique is mainly divided into parallax barrier technology, lens pillar technology and points to light source technology.And parallax barrier technology due to existing LCD liquid crystal display screen process compatible, great advantage can be had in production and cost.
3D grating in parallax barrier technology is generally by four pulse width modulation (PWM) signal controlling, and voltage is 2.8v ~ 5v.When the electronic product such as mobile phone, digital camera uses bore hole 3D display screen time, all cannot provide four pwm signals due to multi-platform greatly, just need to use a control chip in addition, or use software to simulate pwm signal.But, use a control chip in addition, can cost be increased; And use software simulation pwm signal, generally need the mode adding timer, at regular intervals the cycle, call universal input and export (GPIO) mouth control program, realize the output of four pwm signals.Obviously, this implementation can roll up the load of CPU, brings a lot of problem also can to the process of program, such as: CPU under some operating conditions, is timed device and forces to interrupt, can cause the conflict in work, occur the problems such as deadlock, these all can increase the workload of program debugging.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of 3D controlling device of grating and system, reduces the load of system, saves cost, improves the Consumer's Experience of product.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of three-dimensional 3D controlling device of grating, this device comprises: voltage control module, pulse width modulation (PWM) signal output module and static RAM SRAM;
Voltage control module, for choosing the voltage that in voltage in LCD drive integrated circuit LCD drive IC or LCD drive IC, bleeder circuit produces, as high level voltage, exports to pwm signal output module;
Pwm signal output module, comprises four output pins, for the voltage exported according to the record in SRAM and voltage control module, exports four pwm signals;
SRAM, with the output pin one_to_one corresponding in pwm signal output module, for recording high level corresponding to each time width of the pwm signal determined according to pwm signal parameter or low level.
In such scheme, described pwm signal output module, is connected with 3D grating; Or four output pins are pulled out on LCD FPC by described pwm signal output module, 3D grating is connected via four output pins on self FPC and LCD FPC.
In such scheme, described device comprises further: register, for arranging the parameter controlling pwm signal and export; Accordingly, described pwm signal output module, also for reading the parameter in register, when parameter value is the closedown of 3D grating function, stops output pwm signal, when parameter value is the unlatching of 3D grating function, and normal output pwm signal; Or, directly by unsettled for four output pins.
Present invention also offers a kind of 3D grating control system, this system comprises: LCD drive IC, 3D grating; Described LCD drive IC is newly-increased four output pins;
LCD drive IC, for choosing the voltage of its voltage or the generation of self bleeder circuit, as high level voltage; According to pwm signal parameter established data, export four pwm signals by described four output pins to 3D grating;
3D grating, for receiving pwm signal, carries out 3D display.
As can be seen here, adopt Apparatus and system of the present invention, by on LCD drive integrated circuit (LCD drive IC) according to existing LCD pin, newly-increased four pins, simultaneously by record in static random access memory (SRAM) according to pwm signal established data, to 3D grating output pwm signal, thus realize while by LCD drive IC control LCD, control 3D grating, reduces the load of system, saves cost; Further, the thickness of 3D LCD can be reduced, improve the Consumer's Experience of product.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of 3D controlling device of grating embodiment of the present invention;
Fig. 2 be pwm signal output module directly and 3D grating connection diagram;
Fig. 3 is that pwm signal output module is via LCD FPC and 3D FPC connection diagram;
Fig. 4 is 3D grating and LCD structure schematic diagram in prior art;
Fig. 5 is 3D grating and LCD structure schematic diagram in the present invention;
Fig. 6 is the composition schematic diagram of 3D grating control system embodiment of the present invention.
Embodiment
Basic thought of the present invention is: on the basis of the LCD output pin of LCD drive IC, increase by four pins, voltage control module in LCD drive IC chooses voltage that voltage in existing LCD drive IC or bleeder circuit produce as high level voltage, exports to pwm signal output module; Pwm signal output module according to record in SRAM according to pwm signal parameter established data, by four newly-increased pins, to 3D grating output pwm signal, with control 3D grating.
Below by specific embodiment and accompanying drawing, the present invention is described in detail.
3D controlling device of grating of the present invention as shown in Figure 1, is arranged in LCD drive IC, and this device comprises voltage control module 11, pwm signal output module 12 and SRAM 13;
Voltage control module 11, for directly choosing the voltage in existing LCD drive IC, or choosing the voltage of the bleeder circuit generation in LCD drive IC, as high level voltage, exporting to pwm signal output module 12;
Here, described high level voltage can be determined according to Grating Properties, and according to the high level voltage of Grating requirements, the namely high level voltage of pwm signal, chooses voltage suitable in LCD drive IC;
Pwm signal output module 12, comprise four output pins, four output pins newly-increased on the basis of the existing LCD output pin of LCD drive IC, identical with the implementation of LCD drive IC existing LCD output pin, for according to the record in SRAM 13, and the voltage that voltage control module 11 exports, export four pwm signals;
SRAM 13, with the output pin one_to_one corresponding in pwm signal output module 12, for record according to pwm signal parameter established data, namely in pwm signal each time width corresponding be high level or low level.
Wherein, described pwm signal parameter is determined by the characteristic of 3D grating, comprises frequency and the duty ratio of pwm signal; Describedly to comprise according to pwm signal parameter determination data: according to the frame rate of current LCD drive IC and the frequency of pwm signal, calculate ratio between the two, then according to the duty ratio of pwm signal, determine the ratio that high level accounts in the data; Suppose, the frame rate of current LCD drive IC is 50hz, and the duty ratio of pwm signal is 50%, and accuracy is +/-1%, and frequency is 100hz, and accuracy is +/-10hz, and the ratio of the frequency of frame rate and pwm signal is 1: 2; Suppose there are n data in the SRAM that in the LCD that LCD drive IC controls, a certain row are corresponding; So, in conjunction with duty ratio, the data in the SRAM that the output pin of grating is corresponding are 1,1..., 0,0..., 1,1..., 0,0...; Wherein, in first group, the number of 1 is continuous n/4 individual 1, n/4 round number, in second group, the number of 0 is continuous n/4 individual 0, n/4 round number, in the 3rd group, the number of 1 is total number of 1 and 0 (before the n-)/2 1, total number of 1 and 0 (before the n-)/2 round numbers, in 4th group, the number of 0 fills up permutation, and the data amount check in the SRAM that grating output pin is corresponding is identical with the data amount check that LCD drive IC arranges in corresponding SRAM.
Further, pwm signal output module 12, as shown in Figure 2, can be directly connected to 3D grating 21; Or, as shown in Figure 3, directly be connected with LCD flexible PCB (FPC) 22, four output pins are pulled out on LCD FPC 22,3D grating 21 is connected with the output pin of four on LCD FPC 22 via the FPC 23 of self, be specially: be connected on LCDFPC 22 by the output pin of LCD drive IC 24, LCD FPC 22 reserves pad (PAD), 3D grating 21 is connected the PAD on LCD FPC 22 by the FPC 23 of self.
This device comprises further: register 14, for arranging the parameter of control 3D grating function, such as, when parameters CT0 is 0, represents that 3D grating function is closed, and when CT0 is 1, represents that 3D grating function is opened;
Accordingly, pwm signal output module 12, for reading the parameter in register 14, cutting out if parameter value is 3D grating function, then stopping output pwm signal; Open if parameter value is 3D grating function, then normal output pwm signal; Or, directly by unsettled for four output pins, in order to close 3D grating function.
Figure 4 shows that the structure of existing 3D grating and LCD, relative to prior art, the 3D controlling device of grating that the present invention adopts, together with 3D grating can do with LCD, thus one deck glass saved between 3D grating and LCD, as shown in Figure 5, and then make 3D LCD thinner.
Present invention also offers a kind of 3D grating control system, as shown in Figure 6, comprise LCD drive IC 61,3D grating 62;
LCD drive IC 61, for directly choose existing voltage or choose existing bleeder circuit produce voltage, as high level voltage, according to the pwm signal parameter established data of local record, by four pins newly-increased on existing output pin basis, export four pwm signals to 3D grating 62;
3D grating 62, for receiving pwm signal, carries out 3D display.
LCD drive IC 61 specifically comprises: voltage control module 611, pwm signal output module 612 and SRAM 613;
Voltage control module 611, for choosing the voltage in existing LCD drive IC 61, or choosing the voltage that in existing LCD drive IC 61, bleeder circuit produces, as high level voltage, exporting to pwm signal output module 612;
Pwm signal output module 612, comprise four newly-increased output pins, identical with the implementation of LCD drive IC existing LCD output pin, for according to the record in SRAM 613, and the voltage that voltage control module 611 exports, export four pwm signals;
SRAM 613, with the output pin one_to_one corresponding in pwm signal output module 612, for record according to pwm signal parameter established data, namely in pwm signal each time width corresponding be high level or low level.
Wherein, described pwm signal output module 612, can directly be connected with 3D grating 62, or, be directly connected with LCD FPC, be implemented as: output pin is connected to four PAD that LCD FPC reserves;
Accordingly, 3D grating 62, is directly connected with four output pins of pwm signal output module 612; Or, be connected by four output pins on self FPC and LCD FPC, be namely connected with the PAD of four on LCD FPC.
Described LCD drive IC comprises further: register 614, for arranging the parameter controlling pwm signal and export;
Accordingly, pwm signal output module 612, reads the parameter in register 614, closes, then stop output pwm signal if parameter value is 3D grating function; Open if parameter value is 3D grating function, then normal output pwm signal; Or, directly by unsettled for four output pins, in order to close 3D grating function.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (8)
1. a 3D controlling device of grating, is characterized in that, this device comprises: voltage control module, pwm signal output module and SRAM;
Voltage control module, for choosing the voltage in LCD drive IC, as high level voltage, exports to pwm signal output module;
Pwm signal output module, comprises four output pins, for the voltage exported according to the record in SRAM and voltage control module, exports four pwm signals;
SRAM, with the output pin one_to_one corresponding in pwm signal output module, for recording high level corresponding to each time width of the pwm signal determined according to pwm signal parameter or low level; Wherein,
Described 3D controlling device of grating is arranged in LCD drive IC.
2. device according to claim 1, is characterized in that,
Described pwm signal output module, is directly connected with 3D grating; Or,
Four output pins are pulled out on LCD FPC by described pwm signal output module, and 3D grating is connected via four output pins on self FPC and LCD FPC.
3. device according to claim 1 and 2, is characterized in that, described device comprises further: register, for arranging the parameter controlling pwm signal and export;
Accordingly, described pwm signal output module, also for reading the parameter in register, when parameter value is the closedown of 3D grating function, stops output pwm signal, when parameter value is the unlatching of 3D grating function, and normal output pwm signal.
4. device according to claim 3, is characterized in that, the voltage in described LCD drive IC comprises the voltage that in LCD drive IC, bleeder circuit produces.
5. a 3D grating control system, is characterized in that, this system comprises: LCD drive IC, 3D grating; Described LCD drive IC includes 3D controlling device of grating and four output pins;
LCD drive IC, for choosing its voltage, as high level voltage; According to pwm signal parameter established data, export four pwm signals by described four output pins to 3D grating;
3D grating, for receiving pwm signal, carries out 3D display; Wherein,
Described 3D controlling device of grating comprises: voltage control module, pwm signal output module and SRAM;
Voltage control module, for choosing the voltage in LCD drive IC, as high level voltage, exports to pwm signal output module;
Pwm signal output module, comprises four output pins, for the voltage exported according to the record in SRAM and voltage control module, exports four pwm signals;
SRAM, with the output pin one_to_one corresponding in pwm signal output module, for recording high level corresponding to each time width of the pwm signal determined according to pwm signal parameter or low level;
Described 3D controlling device of grating is arranged in LCD drive IC.
6. system according to claim 5, is characterized in that,
Described pwm signal output module, is directly connected with 3D grating or is pulled out on LCD FPC by four output pins;
Accordingly, 3D grating, is directly connected with four output pins of pwm signal output module; Or be connected via four output pins on self FPC and LCD FPC.
7. the system according to claim 5 or 6, is characterized in that, described 3D controlling device of grating comprises further: register, for arranging the parameter controlling pwm signal and export;
Accordingly, described pwm signal output module, also for reading the parameter in register, when parameter value is the closedown of 3D grating function, stops output pwm signal, when parameter value is the unlatching of 3D grating function, and normal output pwm signal.
8. system according to claim 7, is characterized in that, the voltage in described LCD drive IC comprises the voltage that in LCD drive IC, bleeder circuit produces.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110129385.8A CN102208176B (en) | 2011-05-18 | 2011-05-18 | A kind of three-dimensional grating control device and system |
| PCT/CN2011/081061 WO2012155454A1 (en) | 2011-05-18 | 2011-10-20 | 3d grating control apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110129385.8A CN102208176B (en) | 2011-05-18 | 2011-05-18 | A kind of three-dimensional grating control device and system |
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| Publication Number | Publication Date |
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| CN102208176A CN102208176A (en) | 2011-10-05 |
| CN102208176B true CN102208176B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110129385.8A Expired - Fee Related CN102208176B (en) | 2011-05-18 | 2011-05-18 | A kind of three-dimensional grating control device and system |
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| CN (1) | CN102208176B (en) |
| WO (1) | WO2012155454A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208176B (en) * | 2011-05-18 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of three-dimensional grating control device and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573421A (en) * | 2003-06-17 | 2005-02-02 | 有限会社海电话 | Display unit |
| CN201037882Y (en) * | 2006-11-15 | 2008-03-19 | 比亚迪股份有限公司 | Liquid crystal display die set with stereo display function |
| CN201425676Y (en) * | 2009-06-05 | 2010-03-17 | 天马微电子股份有限公司 | Liquid crystal grating module, two dimension/three dimension switchable display |
| CN101990106A (en) * | 2009-08-04 | 2011-03-23 | 夏明志 | Naked eye visual stereoscopic display system and realization method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100225790B1 (en) * | 1994-03-18 | 1999-10-15 | 아끼구사 나오유끼 | Optical deflector optical scanner informational readout system and projector |
| CN201259593Y (en) * | 2008-08-13 | 2009-06-17 | 天马微电子股份有限公司 | 2D/3D switching type liquid crystal display device |
| CN101630493B (en) * | 2009-07-10 | 2013-09-18 | 天马微电子股份有限公司 | Liquid crystal display device |
| CN102208176B (en) * | 2011-05-18 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of three-dimensional grating control device and system |
-
2011
- 2011-05-18 CN CN201110129385.8A patent/CN102208176B/en not_active Expired - Fee Related
- 2011-10-20 WO PCT/CN2011/081061 patent/WO2012155454A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573421A (en) * | 2003-06-17 | 2005-02-02 | 有限会社海电话 | Display unit |
| CN201037882Y (en) * | 2006-11-15 | 2008-03-19 | 比亚迪股份有限公司 | Liquid crystal display die set with stereo display function |
| CN201425676Y (en) * | 2009-06-05 | 2010-03-17 | 天马微电子股份有限公司 | Liquid crystal grating module, two dimension/three dimension switchable display |
| CN101990106A (en) * | 2009-08-04 | 2011-03-23 | 夏明志 | Naked eye visual stereoscopic display system and realization method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012155454A1 (en) | 2012-11-22 |
| CN102208176A (en) | 2011-10-05 |
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