CN1309496A - Method and device for keeping watch distance to TV set - Google Patents
Method and device for keeping watch distance to TV set Download PDFInfo
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- CN1309496A CN1309496A CN00134602A CN00134602A CN1309496A CN 1309496 A CN1309496 A CN 1309496A CN 00134602 A CN00134602 A CN 00134602A CN 00134602 A CN00134602 A CN 00134602A CN 1309496 A CN1309496 A CN 1309496A
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- television set
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012806 monitoring device Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000004438 eyesight Effects 0.000 abstract description 9
- 230000006870 function Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 241000287181 Sturnus vulgaris Species 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
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Abstract
A method and device for keeping the watch distance to TV set to protect vision is disclosed. Said device has a distance monitor composed of a sensor and an interface circuit connected to I/O port of CPU in TV set. The program running in TV set cyclically reads the state of said I/O port. When it is at the first level for a time longer than a predefined time, the screen of TV set is blackened and a prompt "keep distance!" is displayed. When it is at the second level, the screen works normally and the prompt is cleaned out.
Description
The present invention relates to technical field of television sets, relate to the method and apparatus that a kind of spectators of control and television set keep certain viewing distance or rather, automatically the television program receiving spectators are limited in rationally, in the distance range of health.
People are when TV reception; always not too take notice of the distance between own and the television set; especially children, teenager; the television set of liking moving close to is seen; often body be can't help when program excellence especially, and only figure sees to one's great satisfaction for the moment, and behind the brain with requirement throwings such as vision protection, attention eye hygienes; for a long time, low coverage is liftoff stares at television screen, must injure eyes, affect one's power of vision.And, the television set of existing various brands, general bright degree is all fine, these high-brightness signals just constantly stimulate eyes unconsciously, injure human eye for a long time, affect one's power of vision, bring out asthenopia disease, gently then cause myopia, heavy then cause other eye illness, influence children, teen-age growing up healthy and sound especially.
Allow viewer and television set remain in certain viewing distance, what adopt at present is nontechnical means, and as the consciousness that inspires people, supervise etc. with language, effect is relatively limited.
The objective of the invention is to design the method and apparatus that a kind of and television set keep viewing distance, can allow spectators remain at rationally, rating in the distance range of health, protect spectators' eyesight automatically, the control health of people with.
The object of the present invention is achieved like this: a kind of and television set keeps the method for viewing distance, it is characterized in that being:
The television set blank screen is controlled and kept to distance between people before television set or thing and television set during less than predetermined value; When the distance between people before television set or thing and television set surpasses predetermined value, keep the television set bright screen or finish the television set blank screen.
Carry out screen display (OSD) the character prompting of " keeping at a distance " when also being included in control and keeping the television set blank screen, when finishing the television set blank screen, remove screen display (OSD) the character prompting of " keeping at a distance ".
Preset distance value between described people or thing and television set is determined according to the cornerwise length of television screen.
Preset distance value between described people or thing and television set is 2.5 times the cornerwise length of television screen.
Described control is also kept the television set blank screen and be may further comprise the steps:
On television set, be provided with by distance measuring sensor, interface circuit form apart from monitoring device, and be connected with the I/O port of television set CPU (CPU);
Read in the I/O port state of the CPU (CPU) that is connected with this interface circuit by the main program circulation of television set, when this I/O port is first level state, control television set blank screen, or screen display (OSD) character of doing " keeping at a distance " is simultaneously pointed out, when this I/O port is second level state, keep or control the television set bright screen, or demonstration (OSD) the character prompting that clears screen simultaneously.
Also comprise a timer is set, when described I/O port is first level state, start timer and pick up counting, in the timer timing when predetermined value and described I/O port still are first level state, control television set blank screen, timer stops timing; At described I/O port is second level state, or timer also not timing keep or recover television set bright screen, timer zero clearing to predetermined value and described I/O port when transferring second level state to by first level state.
The circulation of the main program of described television set is that the time with the main program circulation primary is controlled in the field trace interval of television set.
Described control television set blank screen is to fill up whole television screen with black box, covers TV images.
Described control television set blank screen is to allow television set be in screen display (OSD) hidden state.
Described control television set blank screen is that the video of control television set main decoder chip is closed (VIDEOMUTE) control bit, cuts off the intermediate frequency input of television set, and television set does not have image output.
Described control television set blank screen is that the brightness of television set and contrast are reduced to zero, stops television set three look electron gun work.
A kind of and television set of the present invention keep the device of viewing distance, it is characterized in that:
Comprise distance measuring sensor and the interface circuit that is connected with distance measuring sensor; Described distance measuring sensor is arranged on the television set front, and described interface circuit is connected with an I/O (I/O) mouth of television set CPU.
Described distance measuring sensor is that a length is apart from diffuse reflection type infrared ray sensor.
Described distance measuring sensor is arranged on the position, middle, below of television picture tube.
Described interface circuit is that a kind of output signal with distance measuring sensor converts to and can hold first level of identification or the level shifting circuit of second level for the I/O (I/O) of CPU (CPU).
Described interface circuit is a common emitter voltage stabilizing circuit.
A kind of and television set of the present invention keep the method and apparatus of viewing distance, in all color television sets.Remote diffuse reflection type infrared sensor and corresponding interface circuits are added in the television set circuit; Control program is write in the CPU (CPU) of television set, finish functions such as data acquisition, program timing, OSD demonstration, OSD removing, blank screen control.Measure in its positive predeterminable range scope whether can sense people or thing by remote diffuse reflection type infrared sensor, send a signal if having then by transducer, be processed into the level that CPU can receive through interface circuit, CPU is constantly by its I/O mouth reading of data, when the data of reading were level "0", promptly transducer was not sensed anyone or thing, then to the timer zero clearing, if the OSD information is arranged, then remove this OSD information; The data of reading as CPU are during for " 1 ", and promptly transducer has been sensed people or thing are arranged in its positive predetermined distance range, then starts the timer timing, and surpass 5 seconds as timer and then stop timing and control the television set blank screen, and show " please keep at a distance ",
A kind of and television set of the present invention keep the method and apparatus of viewing distance; when spectators too near apart from television set; as when being in the default distance range; by making television set blank screen or prompting " please keep at a distance " simultaneously; could continue outside the default distance range to watch and allow spectators have to get back to; effectively protected user's eyesight, with technical measures force users health, wholesomely use eye.
A kind of and television set of the present invention keep the method and apparatus of viewing distance; make television set have automatic protection human eyesight, forces one health, use eye functions healthily; when television set is in open state; detect distance between television set front object (movable human body) and television set body by long in real time apart from diffuse reflection type infrared ray sensor; in time remind spectators that distance is too not near; avoid people because of leaning on to such an extent that too closely eyesight is damaged, protect eye health.
Further specify technical scheme of the present invention below in conjunction with embodiment and accompanying drawing.
Fig. 1 is that the present invention and television set keep the viewing distance manipulated or operated apparatus.
Fig. 2 is the FB(flow block) that the present invention and television set keep the viewing distance method.
Referring to Fig. 1, a kind of and television set of the present invention keep the device of viewing distance, are one apart from monitoring device, can be made up of distance measuring sensor connecting interface circuit, and be connected with an I/O (I/O) mouth of former CPU (CPU) in the television set.Distance measuring sensor wherein is used for detecting in real time the distance between television set front object (movable human body) and television set body, and interface circuit then is used for the output signal of distance measuring sensor is converted to the discernible and sufficiently stable level of former CPU (CPU) in the television set.
Device among Fig. 1 adopted long apart from diffuse reflection type infrared ray sensor 11 as distance measuring sensor, its finding range calculates according to television screen size and obtains, as taking advantage of 2.5 times for the television screen diagonal.Usually the television screen size is set to 21 ", 25 " " 29 " and 34 ", can select corresponding diffuse reflection type infrared ray sensor 11 according to this screen size during enforcement.Generally can be with the long position, middle that is arranged on the television picture tube below apart from diffuse reflection type infrared ray sensor 11, be convenient to detect the predetermined distance range that is positioned at the television set front and have or not people or the object of sensing, if can sense, then export first level signal apart from diffuse reflection type infrared ray sensor 11 by long, as be high level or low level, if can not sense, then export second level signal apart from diffuse reflection type infrared ray sensor 11, as be low level or high level by long.
Interface circuit 12 be used for long level signal conversion process apart from 11 outputs of diffuse reflection type infrared ray sensor become one stable can be by the level signal of the former CPU of television set (CPU) identification.Interface circuit 12 among the figure is made of the common emitter voltage stabilizing circuit, and when length was output as high level apart from diffuse reflection type infrared ray sensor 11, transistor Q ended, interface circuit 12 output high level; When length is output as low level apart from diffuse reflection type infrared ray sensor 11, transistor Q conducting, interface circuit 12 output low levels.
By same requirement, also can design other interface circuit.
Referring to Fig. 2, be a kind of implementing procedure figure of the inventive method.The present invention can utilize the CPU (CPU) of former television set on hardware, but must make amendment with additional to its program, could pass through the program control screen display (OSD On-Screen Display) in the television set CPU (CPU), the blank screen state when finally realizing viewing distance control.
The osd function of television set is the peculiar function of television set CPU (CPU), from the TV software design point of view, be exactly various control registers, control position, color, size, content of character display etc. again by this CPU of software control (CPU); Angle from the TV hardware designs, exactly television line, field sync signal are offered CPU (CPU), and then draw three looks (red, green, orchid) signal and the blanking signal of character display respectively from four ends of CPU (CPU), these four kinds of signals are caused the drive(r) stage of electron gun more respectively.Wherein OSD shows to be exactly character display on screen, and it is exactly that the character that will show on the screen is removed that OSD removes.Method of the present invention has been used this OSD to show with OSD and has been removed function.
The control program of CPU mainly is made of three aspects: the one, and initialize routine is carried out initialization behind the Program reset; The 2nd, main program is an endless loop; The 3rd, interrupt routine is included as remote control interrupt routine that remote control receives service, for character shows the OSD interrupt routine that (OSD demonstrations) serves and is used for clock interrupt routine of timing, also uses this clock interrupt routine during the open and close machine.
The main program of television set CPU (CPU) is an endless loop, behind the television set electrification reset, just enter main program through initialization, the every circulation primary of main program, just the I/O mouth to the television set CPU (CPU) that is connected with interface circuit 12 carries out one query, gather the level data of this I/O mouth, because in the time Be Controlled trace interval on the scene of main program circulation primary, thereby the real-time of the inventive method guaranteed.
In circulation each time, program is read the level signal of being changed out by interface circuit 12 (step 201) from this I/O (I/O) mouth of television set CPU (CPU); Program judges that this level signal is high level or low level (step 202); If the level of reading is high level (in the predetermined distance range before television set object being arranged), then starting timer picks up counting, in the circulation each time of main program, the counting of timer is by the decision of the clock interrupt routine of television set CPU (CPU), clock interrupts once then that the counting of timer adds 1, main program in circulation each time all watchdog timer have or not timing to 5 second or greater than 5 seconds (step 203); If the timer timing was more than or equal to 5 seconds, then stop timer and continue timing (step 204), control television set simultaneously and be in the blank screen state, and the OSD prompt facility of startup television set, as showing the character (step 205) of " please keep at a distance ", after the step 205,206, program is all returned step 201 and is continued to carry out next circulation; If when execution in step 203, the timing of timer is less than 5 seconds, then except making timer continue not do any other processing (step 206) the timing; If when execution in step 202, the level signal that program is judged interface circuit output is low level (not having object in the predetermined distance range before television set), then with timer zero clearing (step 207); And judge that the current OSD of television set that has or not points out (step 208); If no OSD prompting is then returned step 201 and is carried out; If return next circulation of step 201 execution after having the OSD prompting then to remove OSD prompting (step 210).Timing time is arranged to 5 seconds, can avoids frequent blank screen, when before television set, having personnel to walk about, blank screen can not take place temporarily, in order to avoid interrupt rating.
Blank screen is programme controlled by television set CPU (CPU), and four kinds of implementation methods can be arranged.One of method is to hide with OSD surplus symbol under the program control of CPU (CPU), promptly uses little black box one by one to fill up whole screen, allows whole television screen demonstration black determine, and covers image with black box, reaches the purpose of blank screen.Two of method is to use the OSD blanking, makes television set be in the OSD hidden state, promptly utilizes the special function of this kind of CPU (CPU), and the special controller by among the program control CPU allows television set be in hidden state, reaches the purpose of blank screen.Three of method is VIDEO MUTE control bits of main decoder chip in the control television set, i.e. control program by CPU, utilize the VIDEO MUTE control bit of main decoder chip in the iic bus control television set, cut off the intermediate frequency input of television set, allow television set not have image output, reach the purpose of blank screen.Four of method is the control programs by CPU, utilizes iic bus, and contrast, the brightness of television set is reduced to 0, and three electron guns are quit work, and reaches the purpose of blank screen.From the angle of being convenient to implement, in above-mentioned four kinds of methods, be good with the 4th kind of method.
The present invention is the method and apparatus that an appropriate distance is arranged between a kind of guarantor and television set, comprises that infrared distance measurement and OSD remind.Infrared distance measurement comprises: by long measuring unmanned or other object that can obstruct the view are arranged in the distance of setting apart from diffuse reflection type infrared ray sensor, and output high level or low level; By interface circuit with the conversion of signals of infrared ray sensor output be one stable can be by the level of the I/O mouth identification of CPU; CPU reads the level of being changed by interface circuit from this I/O mouth; CPU judges that this level is high level or low level, if low level, to the timer zero clearing, if high level picks up counting; Whether CPU judges timer greater than 5 seconds, if less than 5 seconds, does not then do any processing, if more than or equal to 5 seconds, then allows the television set blank screen, and by OSD prompting characters such as " please keep at a distance ".Owing to can allow the rating people keep suitable viewing distance with television set all the time, thereby can protect human eyesight effectively.
Claims (16)
1. one kind keeps the method for viewing distance with television set, it is characterized in that being:
The television set blank screen is controlled and kept to distance between people before television set or thing and television set during less than predetermined value; When the distance between people before television set or thing and television set surpasses predetermined value, keep the television set bright screen or finish the television set blank screen.
2. a kind of and television set according to claim 1 keep the method for viewing distance, it is characterized in that: carry out screen display (OSD) the character prompting of " keeping at a distance " when also being included in control and keeping the television set blank screen, when finishing the television set blank screen, remove screen display (OSD) the character prompting of " keeping at a distance ".
3. a kind of and television set according to claim 1 keep the method for viewing distance, it is characterized in that: the preset distance value between described people or thing and television set is determined according to the cornerwise length of television screen.
4. a kind of and television set according to claim 3 keep the method for viewing distance, and it is characterized in that: the preset distance value between described people or thing and television set is 2.5 times the cornerwise length of television screen.
5. a kind of and television set according to claim 1 and 2 keep the method for viewing distance, it is characterized in that described control and keep the television set blank screen may further comprise the steps:
On television set, be provided with by distance measuring sensor, interface circuit form apart from monitoring device, and be connected with the I/O port of television set CPU (CPU);
Read in the I/O port state of the CPU (CPU) that is connected with this interface circuit by the main program circulation of television set, when this I/O port is first level state, control television set blank screen, or screen display (OSD) character of doing " keeping at a distance " is simultaneously pointed out, when this I/O port is second level state, keep or control the television set bright screen, or demonstration (OSD) the character prompting that clears screen simultaneously.
6. a kind of and television set according to claim 5 keep the method for viewing distance, it is characterized in that: also comprise a timer is set, when described I/O port is first level state, starting timer picks up counting, in the timer timing when predetermined value and described I/O port still are first level state, control television set blank screen, timer stops timing; At described I/O port is second level state, or timer also not timing keep or recover television set bright screen, timer zero clearing to predetermined value and described I/O port when transferring second level state to by first level state.
7. a kind of and television set according to claim 5 keep the method for viewing distance, it is characterized in that: the main program circulation of described television set is that the time with the main program circulation primary is controlled in the field trace interval of television set.
8. a kind of and television set according to claim 1 keep the method for viewing distance, and it is characterized in that: described control television set blank screen is to fill up whole television screen with black box, covers TV images.
9. a kind of and television set according to claim 1 keep the method for viewing distance, and it is characterized in that: described control television set blank screen is to allow television set be in screen display (OSD) hidden state.
10. a kind of and television set according to claim 1 keep the method for viewing distance, it is characterized in that: described control television set blank screen is that the video of control television set main decoder chip is closed (VIDEOMUTE) control bit, cut off the intermediate frequency input of television set, television set does not have image output.
11. a kind of and television set according to claim 1 keep the method for viewing distance, it is characterized in that: described control television set blank screen is the brightness of television set and contrast to be reduced to zero, stops television set three look electron gun work.
12. one kind keeps the device of viewing distance with television set, it is characterized in that:
Comprise distance measuring sensor and the interface circuit that is connected with distance measuring sensor; Described distance measuring sensor is arranged on the television set front, and described interface circuit is connected with an I/O (I/O) mouth of television set CPU.
13. a kind of and television set according to claim 12 keep the device of viewing distance, it is characterized in that: described distance measuring sensor is one long apart from diffuse reflection type infrared ray sensor.
14. a kind of and television set according to claim 12 keep the device of viewing distance, it is characterized in that: described distance measuring sensor is arranged on the position, middle, below of television picture tube.
15. a kind of and television set according to claim 12 keep the device of viewing distance, it is characterized in that: described interface circuit is that a kind of output signal with distance measuring sensor converts to and can hold first level of identification or the level shifting circuit of second level for the I/O (I/O) of CPU (CPU).
16. keep the device of viewing distance according to claim 12 or 15 described a kind of and television sets, it is characterized in that: described interface circuit is a common emitter voltage stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001346024A CN1168294C (en) | 2000-11-28 | 2000-11-28 | Method and device for keeping watch distance to TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001346024A CN1168294C (en) | 2000-11-28 | 2000-11-28 | Method and device for keeping watch distance to TV set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1309496A true CN1309496A (en) | 2001-08-22 |
| CN1168294C CN1168294C (en) | 2004-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001346024A Expired - Lifetime CN1168294C (en) | 2000-11-28 | 2000-11-28 | Method and device for keeping watch distance to TV set |
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| Country | Link |
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| CN (1) | CN1168294C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072293B (en) * | 2006-05-09 | 2010-06-09 | 深圳Tcl新技术有限公司 | Device and method for automatically regulating television screen display |
| CN102300060A (en) * | 2010-06-25 | 2011-12-28 | 深圳Tcl新技术有限公司 | Infrared control time-shifting system of television and time-shifting control method thereof |
| CN104053055A (en) * | 2013-03-14 | 2014-09-17 | 梦蝶股份有限公司 | Method and system for manufacturing and broadcasting individualized video, and non-instantaneous computer readable storage media |
| WO2016041450A1 (en) * | 2014-09-19 | 2016-03-24 | 阿里巴巴集团控股有限公司 | Screen control method and apparatus |
| CN105491311A (en) * | 2014-09-18 | 2016-04-13 | 汕头市奥斯卡网络科技有限公司 | Intelligent television myopia prevention device |
| CN108235127A (en) * | 2018-01-15 | 2018-06-29 | 华侨大学 | Applied to computer, the child eyesight protecting device of video screen and implementation method |
-
2000
- 2000-11-28 CN CNB001346024A patent/CN1168294C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072293B (en) * | 2006-05-09 | 2010-06-09 | 深圳Tcl新技术有限公司 | Device and method for automatically regulating television screen display |
| CN102300060A (en) * | 2010-06-25 | 2011-12-28 | 深圳Tcl新技术有限公司 | Infrared control time-shifting system of television and time-shifting control method thereof |
| CN104053055A (en) * | 2013-03-14 | 2014-09-17 | 梦蝶股份有限公司 | Method and system for manufacturing and broadcasting individualized video, and non-instantaneous computer readable storage media |
| CN105491311A (en) * | 2014-09-18 | 2016-04-13 | 汕头市奥斯卡网络科技有限公司 | Intelligent television myopia prevention device |
| WO2016041450A1 (en) * | 2014-09-19 | 2016-03-24 | 阿里巴巴集团控股有限公司 | Screen control method and apparatus |
| CN108235127A (en) * | 2018-01-15 | 2018-06-29 | 华侨大学 | Applied to computer, the child eyesight protecting device of video screen and implementation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1168294C (en) | 2004-09-22 |
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Effective date of registration: 20151116 Address after: 266101, Haier Road, 1 hi tech park, Shandong, Qingdao (Haier Industrial Park) Patentee after: haier group corporation Patentee after: Qingdao Haier Electric Appliance Co., Ltd. Patentee after: QINGDAO HAIER MULTI-MEDIA CO., LTD. Address before: 266101, Haier Road, 1 hi tech park, Shandong, Qingdao (Haier Industrial Park) Patentee before: haier group corporation Patentee before: Qingdao Haier Electric Appliance Co., Ltd. |
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Granted publication date: 20040922 |