CN102670162A - Electronic display device and method for testing eyesight by using electronic display device - Google Patents
Electronic display device and method for testing eyesight by using electronic display device Download PDFInfo
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Abstract
The invention discloses an electronic display device which comprises a front frame, a display screen and a distance measurement module. The distance measurement module is used for measuring a distance between a user and the display screen and sending measured distance signals to a signal processing module; the signal processing module is used for receiving the distance signals, calculating eyesight values according to font sizes of information displayed by the display screen and sending the eyesight values to a display module; and the display module is used for displaying the eyesight values. The invention further discloses a method for testing the eyesight by using the electronic display device. According to the electronic display device, the distance measurement module and the signal processing module which is used for converting the distance into the eyesight values are added, and the eyesight values can be calculated by combining distance measurement and current display attribute. According to the method for testing the eyesight by using the electronic display device, a display function of the electronic display device is used for assisting eyesight testing, the method is simple and high in operation, and the eyesight testing can be finished at any time to warn the user to protect the eyesight.
Description
Technical field
The present invention relates to the electronic display technology field, the method that particularly relates to a kind of electronic display unit and utilize electronic display unit to give a test of one's eyesight.
Background technology
In the life, more display generally is used for connecting main frame and shows as the terminal at present, and the external structure of existing display mainly comprises collet, shell and display screen.Wherein shell plays the effect of protection internal structure and fixation kit, and collet is played a supporting role, and display screen is used to show e-file.
The formation of domestic available liquid crystal display screen mainly comprises horizontal polaroid, colored filter, liquid crystal, TFT glass, vertical polaroid, driving I C and printed circuit board (PCB), diffusion sheet, LGP, glue frame, LED-backlit source, backboard, master board, power supply plate etc. at present.After display power supply plate energized; Drive IC and printed circuit board (PCB) are started working, the LED-backlit source luminous after by LGP with distribution of light to everywhere, vertical polaroid is regulated light angle; TFT glass control liquid crystal deflecting element angular dimension; Reflection through backboard with in the direction set of all light towards liquid crystal molecule, through diffusion sheet light is spread out uniformly at last, colored filter demonstrates different colors through the mixing of each colour brightness is regulated.
When display with after main frame is connected, the user can send instruction to master board through the control button of preceding frame, realizes the image optimization Presentation Function.
Modern life rhythm is fast; The user is in still to handle official business and can uses computer work for a long time, is easy to generate and uses the eyestrain, causes seeing the smudgy even visual deterioration of thing; Though the size that the user can select to regulate display font, image through adjusting screen resolution or appearance attribute reaches the purpose of seeing clearly; But ignored the protection to vision, and the vision detection need be arrived special place and detected, the not free vision of doing of user detects; Can not get necessary caution, this just causes the further deterioration of vision.
Summary of the invention
The objective of the invention is to the technological deficiency that exists in the prior art, and a kind of electronic display unit and a kind of method of utilizing electronic display unit to survey vision with vision measuring ability is provided.
For realizing that the technical scheme that the object of the invention adopted is:
A kind of electronic display unit, frame and display screen before comprising also comprise: range finder module is used to detect the distance between user and the display screen, and institute's range finding is sent to signal processing module from signal; Signal processing module; Be used to receive said distance signal and convert distance value to; And font size and the standard visual acuity chart font size that will show on-screen-display message are compared and are sought coupling sighting target value; Calculate the vision value according to the preset relation between said sighting target value, said distance value and the vision value then, and the vision value is sent to display module; Display module is used to show said vision value.
Described display module is the LED digital display screen that is arranged on preceding frame sidepiece of electronic display unit or edge.
Described display module is said display screen, and described signal processing module exports the vision value to drive IC and printed circuit board (PCB) to show at said display screen.
Described distance member comprises infraluminescence pipe and the infrared receiving tube that is arranged on the said preceding frame; Said infraluminescence pipe is used to launch infrared ray, said infrared receiving tube be used to receive infrared ray that said infraluminescence pipe sends run into the infrared ray that user's back reflection returns and calculate display screen and the user between distance after distance signal is passed to said signal processing module.
Described signal processing module comprises analog-to-digital conversion module, and it receives the infrared receiving tube signal of telecommunication and exports digital signal; Decoder, it receives the digital signal of analog-to-digital conversion module output and is converted into decimal scale information; Numeral comparison process module, it receives said decimal scale information, and calculates the vision value according to the preset relation between detecting distance value, said sighting target value and the vision value, exports display module then to.
Described signal processing module also comprises the demonstration information storage module; Said demonstration on-screen-display message is the test chart information that is stored in the said demonstration information storage module, when the vision measuring ability starts by display driver circuit plate read test table and on display screen, be shown to the user.
Also comprise the healthcare information memory module that stores healthcare information; Described signal processing module exports the vision value information to the healthcare information memory module, and the healthcare information memory module accesses corresponding healthcare information and exports the display driver circuit plate jointly to show through display screen after receiving this vision value information.
A kind of method of utilizing electronic display unit to give a test of one's eyesight, said electronic display unit comprises display screen, may further comprise the steps: 1) adjustment shows the display font size of on-screen-display message, till the user just in time sees clearly; 2) detect the user to the distance between the display screen; 3) according to the user to the distance between the display screen, and show the sighting target value that the font size of on-screen-display message is complementary, the preset relation between the vision value, calculate the vision value; 4) show said vision value.
Described step 3) also comprises vision value comparison step, after the vision value that continues to calculate in the scheduled time changes, does not export this vision value to display module.
Said demonstration on-screen-display message is the interior test chart information of demonstration information storage module that is stored in display screen.
Compared with prior art, the invention has the beneficial effects as follows:
Electronic display unit of the present invention; Increase range finder module and will be apart from the message processing module that is converted into the vision value; Through distance test and combine the corresponding standard sighting target value of current display font size, calculate the vision value and the vision value is presented at the LED digital display screen or directly is presented on the display screen.The examination of visual acuity function is introduced on the electronic display unit, can effectively guarantees user, with eye is healthy certain suggesting effect is provided for the user to the knowing the inside story of himself vision.
In the preferred version, increase the demonstration information storage module, described demonstration information storage module is a depositor etc.; But the test chart information that its permanent storage is preset; When the vision measuring ability starts, by display driver circuit plate read test table and on display screen, be shown to the user, adopt the test chart of unified font size to carry out vision and detect, can effectively guarantee the accuracy that detects; Adopt the font size of standard visual acuity chart also that it is directly corresponding with the sighting target value simultaneously in the test chart, more can simplify calculating.
In the preferred version; The healthcare information memory module; Described healthcare information memory module is a depositor etc., but its permanent storage preset be worth corresponding healthcare information with vision, the healthcare information memory module accesses corresponding healthcare information and exports the display driver circuit plate jointly to show through display screen after receiving this vision value information; Show through vision value and corresponding healthcare information, can effectively improve the cognition of user sight protectio.
Simultaneously, the method for utilizing electronic display unit to give a test of one's eyesight of the present invention utilizes the auxiliary vision of carrying out of Presentation Function of electronic displays self to detect, and method simple operations property is strong, can accomplish eyesight testing at any time, reminds the protection of user to vision.
Description of drawings
Shown in Figure 1 is display Facad structure sketch map of the present invention;
Shown in Figure 2 is the vision checkout gear circuit diagram of the display of the first embodiment of the present invention;
Fig. 3 is a second embodiment of the present invention display vision checkout gear circuit diagram.
Among the figure: 1. collet, 2. before frame, 3. display screen, 4. outer luminous tube, 5 infrared receiving tubes, 6.LED digital display screen, 71. single-chip microcomputers, 72. decoders, 73. digital comparison process modules, 74. first depositors, 75. second depositors, 8. startup button.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
First embodiment
Like Fig. 1, shown in 2; Display of the present invention comprises collet, shell and display screen; The startup button 8 that also comprises vision checkout gear and vision measuring ability; Described vision checkout gear comprises range finder module, is connected with described range finder module inhibit signal and converts ranging information the signal processing module of vision value into, and the vision value display module that described vision value is shown.
Wherein, Described collet is played a supporting role to shell and display screen, and its bottom surface is and the circle of plane contact or the planar structure of other shapes that its top is fixedly connected with shell; For ease of transportation; Be separable the fixed connection between general collet and shell, so that save the space in the transportation, the damaged situation when avoiding transporting simultaneously takes place.
Described shell plays the effect of protection internal structure and fixation kit, it comprise with around the display screen fixedly embedding contain in it preceding frame 2 and with the back panel (not shown) of inner electric elements containing in it.Control button before frame bottom or anterior bottom side are provided with before described shell.
Described display screen mainly comprises liquid crystal, LED-backlit source, drive IC and printed circuit board (PCB), master board, power supply plate etc.; When display screen being connected with transmission equipment and provide certain alternating voltage to import; The power supply plate is sent to the preceding control button on the frame before the shell with electric energy; The user can send startup command through the preceding control button of front end, and master board is opened drive IC and printed circuit board (PCB) after receiving order, and display screen can normally show the e-file picture.Described display screen and prior art are same, in this repeat no more its detailed structure and principle.
Described range finder module comprise infraluminescence pipe 4 and with the infrared receiving tube 5 of the adjacent setting of described infraluminescence pipe; Wherein, Described infraluminescence pipe can send the infrared ray of CF when energy supply, described infrared receiving tube can accept described infraluminescence pipe send infrared ray that infrared ray reflects and after treatment signal be passed to signal processing module.Certainly, described distance member not only is confined to the mode of infrared distance measurement, can adopt distance measuring methods such as laser ranging, ultrasonic ranging, all can detect the user to the device of distance between the display screen all in protection scope of the present invention.
Said signal processing module comprises single-chip microcomputer 71, decoder 72 and digital comparison process module 73; It is connected with infraluminescence pipe 4, infrared receiving tube 5, decoder 72 and digital comparison process module 73 respectively; Wherein, described decoder can be compiled into ten's digit with the digital output signal of single-chip microcomputer.
Described vision value display module is a LED digital display screen 6; Its lower left corner that former frame is set to be avoiding globality to display appearance and constitute influence and to be connected with the depositor numeral comparison process module inhibit signal of signal processing module 7, can be with its process information demonstration on it.
When the user starts the vision measuring ability and stands it can see the image on the display clearly the time; The infrared ray that infraluminescence pipe 4 sends runs into when the user of display front end is blocked; Can infrared reflection be returned display and by infrared receiving tube 5 receiving optical signals; Described infrared receiving tube can produce one and the corresponding electric current of light intensity after receiving optical signal; After its internal module two-stage is amplified; The analog voltage signal of a 0-3V is inputed to single-chip microcomputer 71, and single-chip microcomputer begins to carry out the conversion of analogue signal to digital signal after accomplishing the selection of initialization and port; Through decoder 72 digital signal is compiled into ten's digit and sends this numeral to depositor numeral comparison process module 73 then; Storing the display properties such as font size information and resolution, brightness, contrast that current display shows information in this depositor numeral comparison process module, depositor numeral comparison process module is compared with the sighting target value that obtains mating according to the font size and the standard visual acuity chart font size that show, then sighting target value and the ten's digit that receives is carried out COMPREHENSIVE CALCULATING; Can draw the corresponding vision level that the user position can be seen literal on the indicator screen clearly, through LED digital display screen 6 output vision test and appraisal values.
Specifically, according to China's standard near vision chart examination criteria, designed distance is 30cm, and recording method is a decimal, and the sighting target value is distributed as arithmetic progression, promptly 0.1,0.2,0.3 ... 1.4,1.5.Vision=sighting target value * checks distance/designed distance, when 30cm rice distance can not make out on the table any sign, can let the examinee walk near vision test type, like the examinee till recognize that showing the sighting target value is delegation's labelling of " 0.1 ".The computational methods of this moment are: vision=0.1 * examinee belongs to distance (rice)/0.3 (rice). for example; Can pick out 0.1 opening direction like 0.2 meter, then write down 0.1 * 0.2/0.3 ≈ 0.06.
And eyesight testing computational methods of the present invention are the same; When the user uses display text test vision; Signal processing module is compared the literal size of current demonstration with the font size size of standard vision test chart; Filter out immediate sighting target value (as 1.5), according to the distance (as 0.25 meter) of detected user apart from display, then active user's vision level is 1.5 * 0.25/0.3=1.25 again.
Second embodiment
As the further improvement of the foregoing description, the display of present embodiment comprises collet, shell and display screen; The startup button that also comprises vision checkout gear and vision measuring ability; Described vision checkout gear comprises distance member, be connected with described distance member inhibit signal and with ranging information convert into the vision value signal processing module, store first depositor 74 of eyesight testing table and store second depositor 75 of health care suggestion information, described visual acuity chart is a plurality of pictures; All there is the test of unified character boundary to use font on every pictures; Preferably, this test is identical with the font size that font and standard vision detect the wherein delegation that shows, and adopts preset visual acuity chart; Show in the time of can effectively avoiding eyesight testing that the information font vision testing result that causes not of uniform size is inaccurate; Every all corresponding sighting target value of visual acuity chart is saved the process that coupling sighting target value is sought in comparison simultaneously, calculates more rapid.
Described distance member comprise infraluminescence pipe 4 and with the infrared receiving tube 5 of the adjacent setting of described infraluminescence pipe.Said signal processing module comprises single-chip microcomputer 71, decoder 72 and depositor numeral comparison process module 73; Described single-chip microcomputer is connected with infraluminescence pipe 4, infrared receiving tube 5, decoder 72 and depositor numeral comparison process module 73 respectively; Wherein, Described decoder can be compiled into the digital output signal of single-chip microcomputer ten's digit and information is sent to depositor numeral comparison process module 73; Described depositor numeral comparison process module 73 can read current demonstration font size information or sighting target value in first depositor; It carries out comprehensive sighting target value according to the font size information that shows and distance value calculates the vision value, after then the vision value information being exported to second depositor, 75, the second depositors 75 and receives this vision value information; Access and use the eye care information accordingly, and export drive IC and printed circuit board (PCB) jointly to this information and vision horizontal information are conveyed to the user in the lump through indicator screen.
When the user starts the vision measuring ability; Master board control drive IC and printed circuit board (PCB) read the interior eyesight testing table of first depositor and show through display; Subscriber station can be seen the position of the visual acuity chart on the display clearly to it; The infrared ray that infraluminescence pipe 4 sends runs into when the user of display front end is blocked; Can infrared reflection be returned display and by infrared receiving tube 5 receiving optical signals; Described infrared receiving tube receive can produce behind the optical signal one with the corresponding electric current of light intensity, after its internal module two-stage is amplified, the analog voltage signal of a 0-3V is inputed to single-chip microcomputer 71; Single-chip microcomputer is after accomplishing the selection of initialization and port; Begin to carry out the conversion of analogue signal, through decoder 72 digital signal is compiled into ten's digit and sends this numeral to depositor numeral comparison process module 73 then, storing the font size and the sighting target value information of the vision list of current display in this depositor numeral comparison process module to digital signal; Depositor numeral comparison process module combines this sighting target value and the ten's digit that receives to carry out COMPREHENSIVE CALCULATING, can draw the corresponding vision level that the user position can be seen literal on the indicator screen clearly.Export the vision value information to second depositor 75 then; After second depositor 75 receives this vision value information; Access and use the eye care information accordingly, and export drive IC and printed circuit board (PCB) jointly to this information and vision horizontal information are conveyed to the user in the lump through display screen.
When test, show specific image, the test that can effectively avoid the reason of image own to bring like visual acuity chart or test case pattern etc. is inaccurate.On display, directly show the eyesight testing result, improve display effect, also avoid destruction simultaneously the outside display structure.After demonstrating the result, also can combine its vision value to show specific advisory information simultaneously,, note the eye health maintenance to offer the user healthcare information.
Further, for the display with recognition of face, it can further combine face recognition module and vision measuring ability; Can be according to of the vision detected value storage of people's face information with the user; And when testing eyesight next time, will refer and synthesize in the past the vision value and compare and provide corresponding suggestion and healthcare information, even can be the customization examination of visual acuity cycle, these realize mainly depending on memorizer and program setting; Those skilled in the art are easy to realize, repeat no more at this.
It is pointed out that electronic display unit of the present invention, include but not limited to computer monitor, flat panel TV; Notebook display and mobile phone; And the unlatching of vision measuring ability or close can be operated through switching key, can use through being incorporated into to exercise with keyboard or remote controller; Design through to circuit board can realize, does not launch to describe at this.
Simultaneously; The invention also discloses a kind of method of utilizing electronic display unit to give a test of one's eyesight; May further comprise the steps: at first, subscriber station is at the dead ahead of electronic display unit and start the vision detecting pattern, and the startup of vision detecting pattern can rely on arbitrary patterns such as switching key, keyboard or remote controller to switch; User's head is positioned at cardinal principle and range finder module horizontal level after starting the vision detecting pattern, so that range finder module is accurately measured the distance between eyes and the display screen; After having demonstration information to show on the display screen; The user moves forward and backward to the position of just seeing demonstration information clearly; Certainly also can adopt the method for control switching displayed information here, whether automaticallying switch at interval on schedule when vision detects shows the demonstration information of different fonts size, can be seen clearly by user's decision; If see clearly, can stop through the button of mouse or front end setting automaticallying switch; The distance of range finder module test eyes and display screen draws corresponding standard visual acuity chart sighting target value according to the current display font size of display screen then, and the range information that comes in conjunction with the range finder module transmission calculates the vision value through formula.Its computational methods and principle are described in front to some extent, repeat no more at this.
Because perhaps promptly measure the distance of user and display screen after the vision detecting pattern starts at once through range finder module after the scheduled time; Calculate inaccurate vision value when avoiding the user to move forward and backward the position; Also have a vision value comparison step at this, the continuous end time, be not regarded as the user in suitable measuring position when having bigger variation like vision value in the 3s; Exporting test result to display module then shows; This display module can be display screen, perhaps is arranged on the LED digital display screen on the housing, perhaps any other external connection display equipment.
Be to improve display screen and show that information font, color etc. are unified, improve vision testing result accuracy, vision testing method of the present invention also comprises reading and is stored in test chart information that shows in the information storage module and the step that on display screen, shows.Described visual acuity chart is a plurality of pictures, all has the test of unified character boundary to use font on every pictures, adopts preset visual acuity chart, shows in the time of can effectively avoiding eyesight testing that the information font vision testing result that causes not of uniform size is inaccurate.
Further; For further reminding user's vision protection; Vision testing method of the present invention also is included on the display screen and gives the step of user's healthcare information according to recording the vision value; Be specially at first the vision value information that calculates exported to and store the healthcare information memory module that different healthcare informations are arranged to different vision values, the healthcare information memory module accesses corresponding healthcare information and exports the display driver circuit plate jointly to show through display screen after receiving this vision value information, utilizes display screen to combine the vision value to provide healthcare information; Comprise conditioning exercise or health food and beverage etc., can effectively improve the effectiveness of sight protectio.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. an electronic display unit comprises preceding frame and display screen, it is characterized in that, also comprises:
Range finder module is used to detect the distance between user and the display screen, and institute's range finding is sent to signal processing module from signal;
Signal processing module; Be used to receive said distance signal and convert distance value to; And font size and the standard visual acuity chart font size that will show on-screen-display message are compared and are sought coupling sighting target value; Calculate the vision value according to the preset relation between said sighting target value, said distance value and the vision value then, and the vision value is sent to display module;
Display module is used to show said vision value.
2. electronic display unit as claimed in claim 1 is characterized in that, described display module is the LED digital display screen that is arranged on preceding frame sidepiece of electronic display unit or edge.
3. electronic display unit as claimed in claim 1 is characterized in that, described display module is said display screen, and described signal processing module exports the vision value to drive IC and printed circuit board (PCB) to show at said display screen.
4. like each described electronic display unit of claim 1-3; It is characterized in that; Described distance member comprises infraluminescence pipe and the infrared receiving tube that is arranged on the said preceding frame; Said infraluminescence pipe is used to launch infrared ray, said infrared receiving tube be used to receive infrared ray that said infraluminescence pipe sends run into the infrared ray that user's back reflection returns and calculate display screen and the user between distance after distance signal is passed to said signal processing module.
5. electronic display unit as claimed in claim 4 is characterized in that described signal processing module comprises analog-to-digital conversion module, and it receives the infrared receiving tube signal of telecommunication and exports digital signal; Decoder, it receives the digital signal of analog-to-digital conversion module output and is converted into decimal scale information; Numeral comparison process module, it receives said decimal scale information, and calculates the vision value according to the preset relation between detecting distance value, said sighting target value and the vision value, exports display module then to.
6. electronic display unit as claimed in claim 5; It is characterized in that; Described signal processing module also comprises the demonstration information storage module; Said demonstration on-screen-display message is the test chart information that is stored in the said demonstration information storage module, when the vision measuring ability starts by display driver circuit plate read test table and on display screen, be shown to the user.
7. electronic display unit as claimed in claim 6; It is characterized in that; Also comprise the healthcare information memory module that stores healthcare information; Described signal processing module exports the vision value information to the healthcare information memory module, and the healthcare information memory module accesses corresponding healthcare information and exports the display driver circuit plate jointly to show through display screen after receiving this vision value information.
8. method of utilizing electronic display unit to give a test of one's eyesight, said electronic display unit comprises display screen, it is characterized in that, may further comprise the steps:
1) adjustment shows the display font size of on-screen-display message, till the user just in time sees clearly;
2) detect the user to the distance between the display screen;
3) according to the user to the distance between the display screen, and show the sighting target value that the font size of on-screen-display message is complementary, the preset relation between the vision value, calculate the vision value;
4) show said vision value.
9. method as claimed in claim 8 is characterized in that, described step 3) also comprises vision value comparison step, after the vision value that continues to calculate in the scheduled time changes, does not export this vision value to display module.
10. method as claimed in claim 8 is characterized in that, said demonstration on-screen-display message is the interior test chart information of demonstration information storage module that is stored in display screen.
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| CN102984344A (en) * | 2012-10-16 | 2013-03-20 | 广东欧珀移动通信有限公司 | Method for testing vision with mobile phone and mobile phone |
| CN103654707A (en) * | 2013-12-19 | 2014-03-26 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for detecting eyesight |
| CN104000553A (en) * | 2014-05-23 | 2014-08-27 | 何明光 | Electronic vision detecting system adopting double-blind design |
| CN104116491A (en) * | 2013-04-28 | 2014-10-29 | 谢骅 | Vision detection device and method |
| CN104793713A (en) * | 2015-04-07 | 2015-07-22 | 深圳市万普拉斯科技有限公司 | Automatic user interface matching method for mobile terminal and mobile terminal |
| CN105389094A (en) * | 2015-11-05 | 2016-03-09 | 上海斐讯数据通信技术有限公司 | Electronic device with touch display screen and information processing method for same |
| CN105796049A (en) * | 2014-12-29 | 2016-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Eyesight monitoring method, device and terminal |
| CN107198505A (en) * | 2017-04-07 | 2017-09-26 | 天津市天中依脉科技开发有限公司 | Visual function detecting system and method based on smart mobile phone |
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| CN107436490A (en) * | 2016-05-25 | 2017-12-05 | 中兴通讯股份有限公司 | Adjusting method, device and virtual reality glasses |
| CN110109546A (en) * | 2019-05-05 | 2019-08-09 | 南京信息职业技术学院 | Character scaling device and method based on eyesight |
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| CN102984344A (en) * | 2012-10-16 | 2013-03-20 | 广东欧珀移动通信有限公司 | Method for testing vision with mobile phone and mobile phone |
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| CN105389094B (en) * | 2015-11-05 | 2019-06-25 | 上海斐讯数据通信技术有限公司 | A kind of electronic equipment and its information processing method with touch display screen |
| CN107436490A (en) * | 2016-05-25 | 2017-12-05 | 中兴通讯股份有限公司 | Adjusting method, device and virtual reality glasses |
| CN107436490B (en) * | 2016-05-25 | 2020-11-20 | 中兴通讯股份有限公司 | Adjusting method and device and virtual reality glasses |
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| CN107411700A (en) * | 2017-04-07 | 2017-12-01 | 天津大学 | A kind of hand-held vision inspection system and method |
| CN110109546A (en) * | 2019-05-05 | 2019-08-09 | 南京信息职业技术学院 | Character scaling device and method based on eyesight |
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Application publication date: 20120919 |