CN102510462B - Device for separating blank interpretation area of projector - Google Patents
Device for separating blank interpretation area of projector Download PDFInfo
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- CN102510462B CN102510462B CN201110312762.1A CN201110312762A CN102510462B CN 102510462 B CN102510462 B CN 102510462B CN 201110312762 A CN201110312762 A CN 201110312762A CN 102510462 B CN102510462 B CN 102510462B
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Abstract
The invention relates to a device for separating a blank interpretation area of a projector. The device comprises a microprocessor, input keys, an LCD (Liquid Crystal Display) unit, a blank area color control unit, a vertical and horizontal signal processing unit and a VGA (Video Graphics Array) signal integration unit. Data of the blank interpretation area on a projection screen is input by the input keys and is displayed by the LCD unit; the vertical and horizontal signal processing unit is used for converting an input vertical synchronizing signal and an input horizontal synchronizing signal which are serial into parallel signals which are easy to judge; and the microprocessor obtains related data from the vertical and horizontal signal processing unit and outputs needed blank interpretation area data through the VGA signal integration unit. According to the device provided by the invention, not only can projecting contents be reserved, but also the blank interpretation area is separated on the projector through operating the keys, so that the projection and the interpretation can be carried out synchronously without switching on or off the projector.
Description
[technical field]
The present invention relates to certain enlargement ratio, picture, word be amplified and be projected in the projection device on projection screen, particularly relate to a kind of both can retaining projection content, divisiblely again go out white space for the blank explanation area segmenting device of the projecting apparatus of explanation.
[background technology]
At present, projection device has been widely used in the multiple occasions such as teaching, meeting, exhibition.Along with scientific and technological development, the enlargement ratio of projection device, definition etc. are all in continuous lifting.Yet, though conventional projector device has solved the projective amplification problem of project content, but in actual teaching and meeting practice, the content of institute's projection usually needs to be explained, and the main points of explanation need to write on blank, now, just projecting apparatus need to cut out, and projection screen is risen, this makes projection device constantly to open or to close, not only affect the fluency of meeting or teaching process, also affected to a certain extent the result of use of projection device.As mentioned above, because the projection of general projectors device can not be synchronizeed and carry out with explanation on same projection screen, cause the discontinuous of meeting and teaching process, and frequently closing also of projection device can affect its useful life.
[summary of the invention]
The present invention is intended to address the above problem, and provide a kind of both can retaining projection content, can on projection device, be partitioned into by operation push-button again blank explanation district, make needn't switch projection device just can to make projection to synchronize the blank explanation area segmenting device of the projecting apparatus that carries out with explaining.
For achieving the above object, the invention provides a kind of blank explanation area segmenting device of projecting apparatus, this device comprises:
Microprocessor;
Enter key, it is connected with described microprocessor, for inputting the data in set blank explanation district;
LCD display unit, it is connected with described microprocessor, for showing the data in inputted blank explanation district;
Clear area color control unit, it is connected with described microprocessor, for controlling the ratio of RGB tri-look outputs;
Vertically, horizontal signal processing unit, it is connected with described microprocessor, by inputted serial vertical synchronizing signal and horizontal-drive signal convert easy judgement to and column signal;
VGA signal integration unit, it is connected with clear area color control unit and vertical, horizontal signal processing unit, by analog switch, synchronously switches rgb signal, and
The data in the blank explanation district on projection screen are inputted by enter key, and shown by LCD display unit, vertically, horizontal signal processing unit by inputted serial vertical synchronizing signal and horizontal-drive signal convert easy judgement to and column signal, microprocessor obtains related data from vertical, horizontal signal processing unit, and exports required blank explanation district data by VGA signal integration unit.
Enter key comprises a plurality of keys, and a plurality of keys are divided into whole and adjust district, limit and adjustment district, angle, cut zone selection district and single switching selection district, and comprise a memory button.
Adjust district for whole and include standard-sized sheet key, complete shut-down key, glimmer key, half bright key; Limit and a rectangle of adjustment district, angle output, it is adjustable side and angle respectively; Cut zone selects district screen can be become to 4 districts, Huo16Ge district, 9 districts, and single switching selects district to be used for making single district to open or close; Memory button records current demonstration.
The color of glimmer key output is that the color of original 20%, half bright key output is original 50%.
LCD display unit comprises that scanning frequency demonstration, horizontal frequency demonstration, vertical frequency demonstration, demonstration and shielding area show and separated region quantity shows.
LCD display unit is divided into Er Ge district, the matrix that the firstth district is 10 * 10, and middle two row and two row are the width of half; Second Region is parameter display area, the seven segment code of a plurality of reading scan frequencies respectively, horizontal picture element, vertical picture element, consists of.
Clear area color control unit comprises many group DA transducers, and microprocessor is controlled this DA transducer by serial signal and obtained required voltage.
Vertically, horizontal signal processing unit comprises for measuring the high speed timer of horizontal cycle and for measuring the high-speed counter of horizontal number of times, wherein, timer consists of reverser and quartz (controlled) oscillator.
VGA signal integration unit is analog switch, and it is connected with vertical, horizontal signal processing unit and clear area color control unit respectively, synchronously switches rgb signal.
This device is connected with projection device or is built in projection device.
Contribution of the present invention is, it efficiently solves the problem of cutting apart blank explanation district on projection device.Device of the present invention both can retaining projection content, can on projection device, be partitioned into by operation push-button again blank explanation district, make participant or listen speaker both can see project content, can see the explanation content of writing in clear area again simultaneously, and therefore frequently switch projection device or lifting screen guaranteed continuity and fluency and meeting or the teaching efficiency of teaching or meeting.The features such as the present invention also has structure and simple to operate, easy to implement.
[accompanying drawing explanation]
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is enter key schematic diagram of the present invention.
Fig. 3 is LCD display unit schematic diagram of the present invention.
Fig. 4 is clear area of the present invention color control unit schematic diagram.
Fig. 5 is horizontal signal processing unit schematic diagram of the present invention.
Fig. 6 is vertical signal processing unit schematic diagram of the present invention.
Fig. 7 is the relationship example schematic diagram that enter key of the present invention and LCD display unit show.
[embodiment]
The following example is further explanation of the present invention, and the present invention is not constituted any limitation.
Consult Fig. 1, the blank explanation area segmenting device 100 of projecting apparatus of the present invention comprises microprocessor 10, enter key 20, LCD display unit 30, clear area color control unit 40, vertical, horizontal signal processing unit 50 and VGA signal integration unit 60.
In Fig. 1, described microprocessor 10 can be the microprocessor that any known electric heating control is used, in this example, select HT46R067 type microprocessor, this microprocessor 10 is provided with erasable memory chip U5, and as shown in Figure 7, microprocessor 10 is controlled this internal memory by TW two wire serial mode to its circuit.This erasable memory chip U5 makes microprocessor 10 have memory function.When normal work, some data can be write in this internal memory, even power-off suddenly, the data in internal memory still can store, and therefore can be used for storing significant data and current operating state, to facilitate user directly to use next time.
As shown in Figure 2, enter key 20 comprises a plurality of keys, and it is connected with described microprocessor 10, for inputting the data in set blank explanation district.In the present embodiment, enter key 20 comprises 40 keys, and 40 keys are divided into Si Ge district, comprises that adjusting district 21, limit and adjustment district, angle 22, cut zone selection district 23 and single switching for whole selects district 24, and comprises a memory button.
Described whole adjustment district 21 comprises standard-sized sheet key 211, complete shut-down key 212, the bright key 214 of glimmer key 213, half, standard-sized sheet key 211 (ALL ON)-revert to initial value wherein, complete shut-down key 212 (ALL OFF)-make completely without output, the color of glimmer key 23 (20%)-its output is that the color of original 20%, half bright key 214 (50%)-its output is original 50%.Described limit and adjustment district, angle 22 can adjust respectively limit and angle, wherein, press 1, during 2 key, can make respectively four limits move to adjust limit.While pressing 3 key, can make respectively four angles move to adjust angle.What limit and adjustment district, angle 42 exported is a rectangle.Cut zone selects district 23 screen can be become to 4th district, 9 Huo16 districts, district.Described single switching selects district 24 for single district is opened or closed, if select 4 or 9 districts, the key of pressing > 4 or > 9 is invalid.Also be provided with a memory button, by memory button, can write down current demonstration, after pressing arbitrary key in the firstth district, then return to memory value by memory button.
Described LCD display unit 30 is connected with described microprocessor 10, for showing the data in inputted blank explanation district.LCD display unit 30 comprises that scanning frequency demonstration, horizontal frequency demonstration, vertical frequency demonstration, demonstration and shielding area show and separated region quantity shows.Specifically as shown in Figure 3, this LCD display unit 30 is divided into Er Ge district, the matrix that the firstth district is 10 * 10, and middle two row A and two row B are the width of half.Second Region is parameter display area, 11 seven segment codes, consists of, and is respectively used to reading scan frequency, horizontal picture element, vertical picture element, separated region quantity and renewal picture number of times per second etc.
As shown in Figure 4, described clear area color control unit 40 is connected with VGA signal integration unit 60 and microprocessor 10, for controlling the ratio of RGB tri-look outputs.This clear area color control unit 40 comprises many group DA transducers, for the digital quantity of input being converted to proportional analog quantity with it.In the present embodiment, clear area color control unit 40 comprises three groups of ten DA transducers 41, serial line interface 42 and reference voltage generators 43, and Fig. 4 shows one group of DA transducer 41, serial line interface 42 and reference voltage generator 43.This DA transducer 41 has the output accuracy of ten, and its input is connected with microprocessor 10 by serial line interface 42, and output is connected with the pin 1 of VGA signal integration unit 60, and DA transducer 41 changes color by output voltage.RGB (red RED, green GREEN, blue BLUE) color output independently separates, and is divided into 16 or 32, and wherein 0V is light color, and 5V is the most dark, and any color all can obtain by adjustment RGB ratio.In Fig. 4, serial line interface 42 (IICSERIAL INTERFACE) is serial line interface, and it is connected with microprocessor 10, for control ten numeral inputs by serial mode.Reference voltage generator 43 (REFERENCE) is for making output voltage more accurate.Microprocessor 10 is controlled three groups of described DA transducers by IIC serial signal and is obtained required voltage.
As shown in Figure 5, Figure 6, described vertical, horizontal signal processing unit 50 comprises horizontal signal processing unit and vertical signal processing unit, it is connected with described microprocessor 10, for the vertical and horizontal signal to input, process, by inputted serial vertical synchronizing signal and horizontal-drive signal convert the also column signal of easy judgement to.
Because the VGA output of every computer or notebook computer is all different, this device utilizes high speed timer and high-speed counter to judge vertical, the horizontal signal of input, and it is divided into some districts (2 * 2,3 * 3,4 * 4 or 10 * 10).
Fig. 5 shows horizontal signal processing unit, and this unit comprises that this timer consists of reverser and quartz (controlled) oscillator for measuring the high speed timer of horizontal cycle.In Fig. 5, NCLK is asynchronous pulse, and HD is horizontal-drive signal, and Thpe is synchronizing signal width.Because the length of horizontal signal is fixed, therefore the lower edge by HD signal triggers beginning timing, calculates next lower edge and triggers, and just can know the width of HD.In the present embodiment, it has one group of timer, precision is 0.02083uSEC (1/48MHZ), VGA signal in the slowest 50HZ 320*240 comes, approximately read 4000 pulses (not large than 4096), VGA signal in the fastest 120HZ 2048*1536 comes, and approximately reads 260 pulses, therefore need 12.No matter be how many, remainder Fen You district after being divided into some districts, example is read 260 pulses, and to be divided into 2nd district be 130,130, being divided into 3rd district is 86,86,88, being divided into 4th district is 65,65,65,65, be divided into front 8th district, 9th district and be all for 28 9th district be 36.
Fig. 6 shows vertical signal processing unit, and this unit comprises for measuring the high-speed counter of horizontal number of times.In Fig. 6, NCLK is asynchronous pulse, and HD is horizontal-drive signal, and Thpe is synchronizing signal width.Because of a horizontal signal that vertical signal is a fixed qty, so can trigger by the lower edge of each horizontal signal, start metering, calculate next vertical signal lower edge and trigger, the width that just can know vertical signal is several horizontal signals.In the present embodiment, it has one group of counter, and precision is 12, can calculate 4096 pulses.No matter be how many, the remainder Fen You district after being divided into some districts, for example reading 240 pulses, to be divided into 2nd district be 120,120, being divided into 3rd district is 80,80,80, being divided into 4th district is 60,60,60,60, be divided into front 8th district, 9th district and be all for 26 9th district be 32.For example reading 1536 pulses, to be divided into 2nd district be 768,768, and being divided into 3rd district is 512,512,512, and being divided into 4th district is 384,384,384,384, be divided into front 8th district, 9th district and be all for 170 9th district be 176.
If vertical, the horizontal signal of input are preset as to 9th * 9 district, can angle and limit be moved by the limit of enter key and 1,2,3 keys in adjustment district, angle, make shown square type uprise or become short, broaden or narrow down.Also predeterminable is 2 * 2,3 * 3 or 4 * 4 etc., by pressing numerical key, makes these lattice show or not show.
As shown in Figure 1,60Yu clear area, described VGA signal integration unit color control unit 40 and vertical, horizontal signal processing unit 50 connections, synchronously switch rgb signal by analog switch.In the present embodiment, VGA signal integration unit 60 comprises a triple-pole double throw analog switch, and it has a plurality of pins, and each pin function is as table 1.
Table 1
| Pin | Definition | Pin | Definition | Pin | Definition |
| 1 | Red primary | 6 | Red ground | 11 | Address code |
| 2 | Green primary | 7 | Greenery patches | 12 | Address code |
| 3 | Blue primary | 8 | Blue ground | 13 | Horizontal signal |
| 4 | Address code | 9 | Retain | 14 | Vertical signal |
| 5 | Self-test | 10 | Numerical digit ground | 15 | Address code |
When described VGA signal integration unit 60, for the synchronous rgb signal that switches, switches by microprocessor 10 and controls.VGA signal integration unit 60 can be realized and make the color of output is original 20% or 50%, or makes the functions such as picture is thin out.
As shown in Figure 1, Figure 7 shows, the blank explanation area segmenting device 100 of projecting apparatus of the present invention in use, data by the blank explanation district on enter key 20 input projection screens, and shown by LCD display unit 30, vertically, horizontal signal processing unit 50 by inputted serial vertical synchronizing signal and horizontal-drive signal convert easy judgement to and column signal, microprocessor 10 obtains related data from vertical, horizontal signal processing unit 50, and by the required blank explanation district data of VGA signal integration unit 60 outputs.
More specifically, as Fig. 7, if the content on the projection screen left side needs special explanation, operate 1,2 keys on limit and the right, adjustment district, angle of enter key, make right side bearing to three to five lattice that move to left, can make the right screen become complete white, form blank explanation district, speaker personnel can write explanation content in this blank explanation district.If the content of projection screen bottom and upper segment all needs explanation, first operate 1,2 keys of limit and the top, adjustment district, angle of enter key, make upper sideline move down three to five lattice, in projection screen top, form blank explanation district.After top content has been explained, first press ALL ON and reply full frame, then operate enter key limit 1,2 keys following with adjustment district, angle, make to move three to five lattice on lower sideline, can explain district in following the formations blank of projection screen.
The blank explanation area segmenting device of projecting apparatus of the present invention in use, both can be connected it with general projectors device, also can be built in projection device, to realize the function that is partitioned into blank explanation district on the projection screen of projecting apparatus.
Although the present invention is disclosed by above embodiment, protection scope of the present invention is not limited to this, is not departing under the condition of the present invention's design, and the distortion that above each member is done, replacement etc. all will fall within the scope of claim of the present invention.
Claims (4)
1. a blank explanation area segmenting device for projecting apparatus, is characterized in that, this device comprises:
Microprocessor (10);
Enter key (20), it is connected with described microprocessor (10), for inputting the data in set blank explanation district; Described enter key (20) comprises a plurality of keys, and a plurality of keys are divided into whole and adjust district, limit and adjustment district, angle, cut zone selection district and single switching selection district, and comprise a memory button;
LCD display unit (30), it comprises that scanning frequency demonstration, horizontal frequency demonstration, vertical frequency demonstration, demonstration and shielding area show and separated region quantity shows, this LCD display unit (30) is divided into Er Ge district, the firstth district is 10 * 10 matrix, the width of the every row of middle two row is half of the every column width of other eight row, and the width of the every row of middle two rows is half of the every line width of other eight row; Second Region is parameter display area, the seven segment code of a plurality of reading scan frequencies respectively, horizontal picture element, vertical picture element, consists of, and LCD display unit (30) is connected with described microprocessor (10), for showing that inputted blank explains the data in district;
Clear area color control unit (40), it comprises many group DA transducers, this clear area color control unit (40) is connected with described microprocessor (10), for controlling the ratio of RGB tri-look outputs, described microprocessor (10) is controlled this DA transducer by serial signal and is obtained required voltage;
Vertically, horizontal signal processing unit (50), it comprises for measuring the high speed timer of horizontal cycle and for measuring the high-speed counter of horizontal number of times, wherein, timer consists of reverser and quartz (controlled) oscillator, this is vertical, horizontal signal processing unit (50) is connected with described microprocessor (10), converts the vertical synchronizing signal of inputted serial and horizontal-drive signal to also column signal;
VGA signal integration unit (60) is analog switch, and it is connected with clear area color control unit (40) and vertical, horizontal signal processing unit (50), by analog switch, synchronously switches rgb signal, and
The data in the blank explanation district on projection screen are inputted by enter key (20), and shown by LCD display unit (30), vertically, horizontal signal processing unit (50) converts the vertical synchronizing signal of inputted serial and horizontal-drive signal to also column signal, microprocessor (10) obtains related data from vertical, horizontal signal processing unit (50), and exports required blank explanation district data by VGA signal integration unit (60).
2. the blank explanation area segmenting device of projecting apparatus as claimed in claim 1, is characterized in that, described whole adjustment district includes standard-sized sheet key, complete shut-down key, glimmer key, half bright key; Limit and a rectangle of adjustment district, angle output, it is adjustable side and angle respectively; Cut zone selects district screen can be divided into 4 districts, Huo16Ge district, 9 districts, and single switching selects district to be used for making single district to open or close; Memory button records current demonstration.
3. the blank explanation area segmenting device of projecting apparatus as claimed in claim 2, is characterized in that, the colour brightness of described glimmer key output is that the colour brightness of original 20%, half bright key output is original 50%.
4. the blank explanation area segmenting device of projecting apparatus as claimed any one in claims 1 to 3, is characterized in that, this device is connected with projection device or is built in projection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110312762.1A CN102510462B (en) | 2011-10-14 | 2011-10-14 | Device for separating blank interpretation area of projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110312762.1A CN102510462B (en) | 2011-10-14 | 2011-10-14 | Device for separating blank interpretation area of projector |
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| Publication Number | Publication Date |
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| CN102510462A CN102510462A (en) | 2012-06-20 |
| CN102510462B true CN102510462B (en) | 2014-10-08 |
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| CN201110312762.1A Expired - Fee Related CN102510462B (en) | 2011-10-14 | 2011-10-14 | Device for separating blank interpretation area of projector |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277953A (en) * | 2007-04-26 | 2008-11-13 | Seiko Epson Corp | Projector |
| JP2009092801A (en) * | 2007-10-05 | 2009-04-30 | Seiko Epson Corp | Projector |
| CN102045526A (en) * | 2009-10-20 | 2011-05-04 | 三洋电机株式会社 | Projection image display apparatus |
| CN202276427U (en) * | 2011-10-14 | 2012-06-13 | 深圳市卓先实业有限公司 | Blank explanation area divider for projectors |
-
2011
- 2011-10-14 CN CN201110312762.1A patent/CN102510462B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277953A (en) * | 2007-04-26 | 2008-11-13 | Seiko Epson Corp | Projector |
| JP2009092801A (en) * | 2007-10-05 | 2009-04-30 | Seiko Epson Corp | Projector |
| CN102045526A (en) * | 2009-10-20 | 2011-05-04 | 三洋电机株式会社 | Projection image display apparatus |
| CN202276427U (en) * | 2011-10-14 | 2012-06-13 | 深圳市卓先实业有限公司 | Blank explanation area divider for projectors |
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| Publication number | Publication date |
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| CN102510462A (en) | 2012-06-20 |
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Granted publication date: 20141008 Termination date: 20181014 |