CN2456410Y - Device for keeping distance from TV set - Google Patents
Device for keeping distance from TV set Download PDFInfo
- Publication number
- CN2456410Y CN2456410Y CN00263103U CN00263103U CN2456410Y CN 2456410 Y CN2456410 Y CN 2456410Y CN 00263103 U CN00263103 U CN 00263103U CN 00263103 U CN00263103 U CN 00263103U CN 2456410 Y CN2456410 Y CN 2456410Y
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- television set
- distance
- cpu
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- measuring sensor
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Abstract
The utility model relates to a device for keeping watching distance from a TV, which is used for ensuring the appropriate watching distance between a person and the TV to protect vision. The utility model comprises a distance monitoring device composed of a sensor and an interface circuit and is connected with an import and an output openings of a TV central processing unit (CPU). The state of the import and the output openings is read in by the main program cycle of the TV, when a first level exceeds preset time, TV black screen phenomenon is controlled. And simultaneously the screen display (OSD) character prompt of ' please keep a distance' is made. A second level sustains or controls TV bright screen phenomenon, and simultaneously clear screen display (OSD) character prompt is made.
Description
The utility model relates to technical field of television sets, relates to the device that a kind of spectators of control and television set keep certain viewing distance or rather, automatically the television program receiving spectators is 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 purpose of this utility model is the device that design a kind of and television set keep viewing distance, can allow spectators remain at rationally, rating in the distance range of health, protects spectators' eyesight automatically, the control health of people with.
The purpose of this utility model is achieved in that device a kind of and television set maintenance 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.
The distance of reaction of described distance measuring sensor is the cornerwise length of 2.5 times television screen.
The television set blank screen is controlled and kept to people or the distance between thing and television set during less than predetermined value of device of the present utility model before television set, carries out screen display (OSD) the character prompting of " keeping at a distance " simultaneously; 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, remove screen display (OSD) the character prompting of " keeping at a distance " simultaneously.
The utility model control is also kept the step that the television set blank screen taked and is:
Read in the I/O port state of the CPU (CPU) that is connected with the interface circuit of the utility model device by the main program circulation of television set, when this 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 is done screen display (OSD) the character prompting of " keeping at a distance " simultaneously; When this I/O port is second level state, or timer also not timing to predetermined value and described I/O port when transferring second level state to by first level state, keep or control the television set bright screen, demonstration (OSD) character that clears screen simultaneously prompting, timer zero clearing.
A kind of and television set of the present utility model keep the device 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 are level "0" (second level), promptly transducer is 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 " (first level), be that transducer has been sensed in its positive predetermined distance range people or thing are arranged, then start the timer timing, surpass 5 seconds as timer and then stop timing and control the television set blank screen, and demonstration " please keep at a distance "
A kind of and television set of the present utility model keep the device 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 utility model keep the device 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 the technical solution of the utility model below in conjunction with embodiment and accompanying drawing.
Fig. 1 is that the utility model and television set keep the viewing distance manipulated or operated apparatus.
Fig. 2 is the FB(flow block) that the utility model and television set keep viewing distance.
Referring to Fig. 1, a kind of and television set of the present utility model 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 utility model device.The utility model 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-ScreenDisplay) 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.The utility model has used this OSD to show with OSD and has 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 real-time of the present utility model 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 show black box, 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 that the video of main decoder chip in the control television set is closed (VIDEO MUTE) control bit, 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 utility model is the device 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 (6)
1. 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.
2. a kind of and television set according to claim 1 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.
3. a kind of and television set according to claim 1 keep the device of viewing distance, and it is characterized in that: described distance measuring sensor is arranged on the position, middle, below of television picture tube.
4. a kind of and television set according to claim 1 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).
5. keep the device of viewing distance according to claim 1 or 4 described a kind of and television sets, it is characterized in that: described interface circuit is a common emitter voltage stabilizing circuit.
6. a kind of and television set according to claim 1 keep the device of viewing distance, and it is characterized in that: the distance of reaction of described distance measuring sensor is the cornerwise length of 2.5 times television screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00263103U CN2456410Y (en) | 2000-11-28 | 2000-11-28 | Device for keeping distance from TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00263103U CN2456410Y (en) | 2000-11-28 | 2000-11-28 | Device for keeping distance from TV set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2456410Y true CN2456410Y (en) | 2001-10-24 |
Family
ID=33618169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00263103U Expired - Fee Related CN2456410Y (en) | 2000-11-28 | 2000-11-28 | Device for keeping distance from TV set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2456410Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034339A (en) * | 2010-12-21 | 2011-04-27 | 徐州格利尔科技有限公司 | Distance control vision protector |
| CN102871793A (en) * | 2012-10-19 | 2013-01-16 | 江苏万新光学有限公司 | Intelligent vision protection and interaction application system |
| CN105072470A (en) * | 2015-09-10 | 2015-11-18 | 湖南科技大学 | Ultrasonic ranging-based television screen intelligent dimming device and method |
-
2000
- 2000-11-28 CN CN00263103U patent/CN2456410Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034339A (en) * | 2010-12-21 | 2011-04-27 | 徐州格利尔科技有限公司 | Distance control vision protector |
| CN102871793A (en) * | 2012-10-19 | 2013-01-16 | 江苏万新光学有限公司 | Intelligent vision protection and interaction application system |
| CN105072470A (en) * | 2015-09-10 | 2015-11-18 | 湖南科技大学 | Ultrasonic ranging-based television screen intelligent dimming device and method |
| CN105072470B (en) * | 2015-09-10 | 2018-05-08 | 湖南科技大学 | A kind of television screen intelligent dimming device and method based on ultrasonic ranging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |