CN105472432B - Detect the method and system of user's viewing distance - Google Patents
Detect the method and system of user's viewing distance Download PDFInfo
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- CN105472432B CN105472432B CN201510907259.9A CN201510907259A CN105472432B CN 105472432 B CN105472432 B CN 105472432B CN 201510907259 A CN201510907259 A CN 201510907259A CN 105472432 B CN105472432 B CN 105472432B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Social Psychology (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Details Of Television Systems (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses a kind of methods for detecting user's viewing distance, and the method comprising the steps of: the telecommand that television reception remote controler is sent；TV parses the telecommand, obtains the average signal strength of signal of communication pre-loaded in the telecommand；The distance between the TV and the remote controler is calculated according to the average signal strength in TV；When the distance is not when setting within the scope of viewing distance, TV generates prompt information to prompt user to adjust viewing distance.The invention also discloses a kind of systems for detecting user's viewing distance.The present invention improves the accuracy of viewing distance between detection user and TV, and reduces the cost of viewing distance between detection user and TV.
Description
Technical field
The present invention relates to multimedia television field more particularly to a kind of method and systems for detecting user's viewing distance.
Background technique
With enriching for material life, TV has become indispensable electric equipment products in people's life.Video screen
Size it is increasing, clarity is also higher and higher, the seeing and hearing enjoyment of shock has been brought, still, as people are to strong
The growing interest of health and the requirement of high image quality, user also increasingly pay attention to TV when watching TV to eyesight and health
It influences.Reasonable television-viewing distance can not only be effectively protected eyesight, moreover it is possible to play the image quality effect of TV to the maximum extent
Fruit.
Typically now all be by increasing extraneous module, such as ultrasonic wave and infrared distance measuring newly on TV, however it is ultrasonic
Wave is decayed obviously in transmission process, will affect its effective range for measuring distance, and the distance that it is measured is short.In addition, red
Outside line is easy to be obstructed by object or wall in transmission process, and transmission range is shorter, and positioning system complexity is high, practicability
Low, measurement result accuracy is low.
Summary of the invention
The main purpose of the present invention is to provide a kind of method and systems for detecting user's viewing distance, solve the prior art
Measure the accurate low technical problem of distance between user and TV.
To achieve the above object, the method for detection user's viewing distance provided by the invention, comprising steps of
The telecommand that television reception remote controler is sent；
TV parses the telecommand, and the average signal for obtaining signal of communication pre-loaded in the telecommand is strong
Degree；
The distance between the TV and the remote controler is calculated according to the average signal strength in TV；
When the distance is not when setting within the scope of viewing distance, TV generates prompt information to prompt user to adjust viewing
Distance.
Preferably, before the step of telecommand that the television reception remote controler is sent, further includes:
TV sends signal of communication to the remote controler, for remote controler calculating receive within a preset time it is described
The average signal strength of signal of communication, the average signal strength is loaded onto the telecommand and send it is described remote control refer to
It enables.
Preferably, the TV sends signal of communication to the remote controler, so that the remote controler is calculated in preset time
The average signal strength is loaded onto the telecommand concurrently by the average signal strength for inside receiving the signal of communication
Before the step of sending the telecommand, further includes:
The setting viewing distance that various screen sizes correspond to display pattern is stored in advance in TV.
Preferably, the TV parses the telecommand, obtains average signal pre-loaded in the telecommand
After the step of intensity, further includes:
Within a preset range whether TV judge the average signal strength；
If the average signal strength is within a preset range, then follow the steps: being calculated according to the average signal strength
To the distance between the TV and the remote controler.
Preferably, the TV judge the average signal strength whether within a preset range the step of after, further includes:
If not within a preset range, TV retransmits signal of communication to the remote controler to the average signal strength.
Preferably, the signal of communication that the TV is sent to the remote controler uses radio communication, and the television reception arrives
The telecommand be infrared signal.
In addition, to achieve the above object, the present invention also provides the system of detection user's viewing distance, described device includes:
Receiving module, for receiving the telecommand of remote controler transmission；
Parsing module obtains signal of communication pre-loaded in the telecommand for parsing the telecommand
Average signal strength；
Computing module, for the distance between TV and the remote controler to be calculated according to the average signal strength；
Cue module, for when the distance is not when setting within the scope of viewing distance, generation prompt information to be to prompt to use
Family adjusts viewing distance.
Preferably, the system of detection user's viewing distance, further includes:
First sending module, for sending signal of communication to the remote controler, so that the remote controler calculates when default
The interior average signal strength for receiving the signal of communication, the average signal strength is loaded onto the telecommand simultaneously
Send the telecommand.
Preferably, the system of detection user's viewing distance, further includes memory module, for various screens to be stored in advance
Size corresponds to the setting viewing distance of display pattern.
Preferably, the system of detection user's viewing distance further include:
Judgment module, for judging the average signal strength whether within a preset range；
Processing module, if within a preset range for the average signal strength, thening follow the steps: according to the average letter
Number Strength co-mputation obtains the distance between the TV and the remote controler.
Preferably, if first sending module is also used to the average signal strength not within a preset range, again
Signal of communication is sent to the remote controler.
Preferably, first sending module is radiofrequency emitting module, and the receiving module is IR signal reception module.
The remote command that the present invention is sent by receiving remote controler, according to pre-loaded logical in the telecommand
The distance between TV and the remote controler is calculated in the average signal strength of letter signal, when the distance is not watched in setting
When in distance range, user is prompted to adjust viewing distance.By be calculated according to the average signal strength of signal of communication with
The remote controler, i.e. the distance between user improve the accuracy of distance between measurement TV and user.
Detailed description of the invention
Fig. 1 is the flow diagram of the first embodiment of the method for present invention detection user's viewing distance；
Fig. 2 is the flow diagram of the second embodiment of the method for present invention detection user's viewing distance；
Fig. 3 is the flow diagram of the 3rd embodiment of the method for present invention detection user's viewing distance；
Fig. 4 is the functional block diagram of the first embodiment of the system of present invention detection user's viewing distance；
Fig. 5 is the functional block diagram of the second embodiment of the system of present invention detection user's viewing distance；
Fig. 6 is the functional block diagram of the 3rd embodiment of the system of present invention detection user's viewing distance.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of method for detecting user's viewing distance.
Referring to Fig.1, Fig. 1 is the flow diagram of the first embodiment of the method for present invention detection user's viewing distance.
In the present embodiment, the method for detection user's viewing distance includes:
Step S10, the telecommand that television reception remote controler is sent；
The telecommand that television reception remote controler is sent is preloaded with the TV in the telecommand and is sent to institute
State the average signal strength of the signal of communication of remote controler.Preferably, before remote controler sends telecommand to the TV, TV
User first defines the coded format of remote control device instruction, and the coding of the remote control device instruction is by guidance code, customer number, number
It is formed according to code and intensity code.
Step S20, TV parse the telecommand, obtain the flat of signal of communication pre-loaded in the telecommand
Equal signal strength；
When the television reception is to the telecommand, the telecommand is parsed, is obtained in the remote command
The average signal strength of pre-loaded signal of communication, is denoted as PR。
The distance between the TV and the remote controler is calculated according to the average signal strength in step S30, TV；
The distance between the TV itself and the remote controler is calculated according to the average signal strength in the TV,
The distance is denoted as r.Preferably, the TV is according to the average signal strength PRIt is calculated between the remote controler
The detailed process of distance r are as follows: the TV is according to formula PR=PTThe deformation of/r*n be calculated between the remote controler away from
From.The PTThe average signal strength of the signal of communication of the remote controler is sent to for the TV；The n is propagation factor,
Its numerical value is determined by the environment that the signal of communication is propagated.To the formula PR=PT/ r*n takes logarithm, can obtainBecause of PTBe the signal of communication that the TV is sent to the remote controler average signal it is strong
Degree, therefore the PTIt is known.It follows that the formula is 10*lgPR=-A-10*nlgr, A and n in formula are normal
Number indicates the communication signal strength and the distance between remote controler relationship of the television reception.The A is defined as using
When dBm indicates 1 meter of distance emitter, i.e., when the distance between the described TV and the remote controler are 1 meter, the television reception is arrived
The absolute value of the average energy for the remote control command signal that the remote controler is sent, such as when the telecommand letter that the remote controler is sent
Number average energy be 40dBm when, then the corresponding numerical value of parameter A be 40.What the n was indicated is signal of communication in transmission process
In, with the increase of transmission range, the rate of communication signal strength decaying, the size of the corresponding numerical value of the n is by communicating
The environment that signal is propagated determines.Preferably, designer is in R&D process, according to the reality of the TV and the remote controler
Situation, Simulated family environment are tested repeatedly, finally determine the corresponding numerical value of reasonable A and n.Because in the TV and
The variation of environment where the remote controler can have a certain impact to the test result of the corresponding numerical value of test A and n, therefore
Take the average value of multiple test result.It is such as shown in table 1 by repeatedly testing obtained data as the designer:
Then the corresponding numerical value of the A is to be averaged to the 38dBm, 40dBm and 42dBm, obtains the corresponding number of the A
The 40dBm of value.The corresponding numerical value of the n is to be averaged to described 2.7,3 and 3.3, and obtaining the corresponding numerical value of the n is 3.Then
In the formula 10*lgPRIn=- A-10*nlgr, a unknown number r is only existed, then the TV is according to the formula 10*
lgPR=-A-10*nlgr finds out the distance between remote controler r.
Step S40, when the distance is not when setting within the scope of viewing distance, TV generates prompt information to prompt user
Adjust viewing distance.
The TV compares the setting viewing distance that calculated distance r is stored with it, judges the distance r
Whether within the scope of the setting viewing distance, if the distance r is not within the scope of the setting viewing distance, the TV
Prompt information is generated, and shows the prompt information in its display interface, its user is prompted to adjust viewing distance.The setting is seen
See the viewing ratio of the i.e. described user of distance.The method that user described in the television reminding adjusts viewing distance can also be
Prompt user is carried out by indicator light flashing and adjusts viewing distance, can also export specific sound by loudspeaker to prompt
It states user and adjusts viewing distance etc..When the TV determines that the distance is within the scope of setting viewing distance, continues to play and work as
Preceding video.
The remote command that the present embodiment is sent by receiving remote controler, according to pre-loaded in the telecommand
The distance between TV and the remote controler is calculated in the average signal strength of signal of communication, when the distance is not seen in setting
When seeing in distance range, user is prompted to adjust viewing distance.By being calculated according to the average signal strength of signal of communication
With the remote controler, i.e. the distance between user, the accuracy of distance between measurement TV and user is improved.
Referring to the flow diagram of the second embodiment for the method that Fig. 2, Fig. 2 are present invention detection user's viewing distance, base
The second embodiment of the method for present invention detection user's viewing distance is proposed in first embodiment.
In the present embodiment, before the step S10, further includes:
The setting viewing distance that various screen sizes correspond to display pattern is stored in advance in step S50, TV.
The setting viewing distance that various screen sizes correspond to display pattern is stored in advance in the TV, and such as TV is preparatory
The viewing ratio of the corresponding display pattern of various screen sizes of storage is as shown in table 2:
Step S60, TV send signal of communication to the remote controler, so that remote controler calculating connects within a preset time
The average signal strength is loaded onto the telecommand and sends institute by the average signal strength for receiving the signal of communication
State telecommand；
It is mounted with wireless signal transmitting node on the TV, reception of wireless signals node is mounted on the remote controler.
The TV sends signal of communication to the remote controler by the wireless signal transmitting node.Preferably, the signal of communication
For wireless signal.The i.e. described TV transmits wireless signals to the remote controler by wireless transmission node, and the remote controler passes through
The wireless receiving node receives the wireless signal.When the remote controler receives m wireless signal within a preset time,
Calculate the average signal strength of the m wireless signal.Preferably, the preset time is 1 second.I.e. when the remote controler is 1
When receiving m wireless signal in time second, the average signal strength P of the m wireless signal is calculatedR, i.e.,And resulting average signal strength P will be calculatedRIt is loaded onto the telecommand,
Preferably, by the average signal strength PRIt is loaded onto the telecommand in intensity code, is sent to the TV.When described
When TV does not receive the telecommand, determine to detect user's viewing distance failure.Preferably, when the remote controler is
When IR remote controller, when the remote controler is during sending telecommand to the TV, due to the IR remote controller
The wireless signal of transmitting has rectipetaly, if intermediate have blocking for human body or other objects, the TV will be unable to receive
The key command sent to the remote controler.
Further, the TV is sent to the signal of communication of the remote controler using radio communication, the television reception
The telecommand arrived is infrared signal.
The TV sends signal of communication to the remote controler using radio communication, and the television reception is to the remote control
The telecommand that device is sent then is infrared signal, i.e., the telecommand is sent to described by the described remote controler by infrared technique
TV.Wherein, it includes but is not limited to technology for radio frequency that the TV, which sends signal of communication to the technology of the remote controler,.But
In order to accurately measure the distance between the TV and the remote controler, the TV does not use infrared technique to send signal of communication
To the remote controler.
The present embodiment calculates the average signal strength for multiple signals of communication that TV is sent by remote controler, reduces and is passing
The interference occurred in defeated communication signal procedure keeps the viewing distance for detecting user more accurate, and without adding complicated group
Part reduces costs, and improves the competitiveness of product.
Referring to the flow diagram of the 3rd embodiment for the method that Fig. 3, Fig. 3 are present invention detection user's viewing distance, base
The 3rd embodiment of the method for present invention detection user's viewing distance is proposed in first embodiment.
In the present embodiment, after the step S20, further includes:
Within a preset range whether step S70, TV judge the average signal strength；
After the TV parses the average signal strength of the signal of communication from the telecommand, described in judgement
Within a preset range whether average signal strength.Preferably, the preset range is according to the specific of the transmission environment of signal of communication
Situation and set, when the m signal of communication such as sent in one second when the TV is to the remote controler, m communication letter
Number when the TV is just sent, signal strength is consistent, and the signal strength of such as m signal of communication is all
45db, then the average signal strength in the television of the m signal of communication is 45db, described because affected by environment
Signal of communication is when being transmitted to the remote controler, it may appear that a degree of decaying such as can be with then according to transmission environment at that time
The preset range be can be set into 38db to 45db.
Step S80, if the average signal strength not within a preset range, retransmits signal of communication to the remote control
Device.
When the TV determines the average signal strength not within a preset range, i.e., the described remote controler receives the electricity
Depending on send some perhaps the decaying of multiple signals of communication is too many or occurs abnormal, cause the remote controler to be calculated
Average signal strength not within a preset range when, the TV will not according to the average signal strength calculate with the remote controler
The distance between, but signal of communication is retransmitted to the remote controler, so that the remote controler recalculates in preset time
The signal of communication received average signal strength.When the TV determines the average signal strength within a preset range
When, it thens follow the steps: the distance between the TV and the remote controler is calculated according to the average signal strength.
The present embodiment is by judging that the average signal is strong when TV parses the average signal strength in telecommand
Degree whether be within a preset range, when the average signal strength not within a preset range when, it is not strong according to the average signal
Degree calculates the distance between described remote controler, i.e., without the detection to user's viewing distance, improves testing result
Accuracy.
The present invention further provides a kind of systems for detecting user's viewing distance.
Referring to the functional module signal of the first embodiment for the system that Fig. 4, Fig. 4 are present invention detection user's viewing distance
Figure.
In the present embodiment, the system of detection user's viewing distance includes:
Receiving module 10, for receiving the telecommand of remote controler transmission；
The telecommand that television reception remote controler is sent is preloaded with the TV in the telecommand and is sent to institute
State the average signal strength of the signal of communication of remote controler.Preferably, before remote controler sends telecommand to the TV, TV
User first defines the coded format of remote control device instruction, and the coding of the remote control device instruction is by guidance code, customer number, number
It is formed according to code and intensity code.
Parsing module 20 obtains signal of communication pre-loaded in the telecommand for parsing the telecommand
Average signal strength；
When the television reception is to the telecommand, the telecommand is parsed, is obtained in the remote command
The average signal strength of pre-loaded signal of communication, is denoted as PR。
Computing module 30, for according to the average signal strength be calculated between TV and the remote controler away from
From；
The distance between the TV itself and the remote controler is calculated according to the average signal strength in the TV,
The distance is denoted as r.Preferably, the TV is according to the average signal strength PRIt is calculated between the remote controler
The detailed process of distance r are as follows: the TV is according to formula PR=PTThe deformation of/r*n be calculated between the remote controler away from
From.The PTThe average signal strength of the signal of communication of the remote controler is sent to for the TV；The n is propagation factor,
Its numerical value is determined by the environment that the signal of communication is propagated.To the formula PR=PT/ r*n takes logarithm, can obtainBecause of PTBe the signal of communication that the TV is sent to the remote controler average signal it is strong
Degree, therefore the PTIt is known.It follows that the formula is 10*lgPR=-A-10*nlgr, A and n in formula are normal
Number indicates the communication signal strength and the distance between remote controler relationship of the television reception.The A is defined as using
When dBm indicates 1 meter of distance emitter, i.e., when the distance between the described TV and the remote controler are 1 meter, the television reception is arrived
The absolute value of the average energy for the remote control command signal that the remote controler is sent, such as when the telecommand letter that the remote controler is sent
Number average energy be 40dBm when, then the corresponding numerical value of parameter A be 40.What the n was indicated is signal of communication in transmission process
In, with the increase of transmission range, the rate of communication signal strength decaying, the size of the corresponding numerical value of the n is by communicating
The environment that signal is propagated determines.Preferably, designer is in R&D process, according to the reality of the TV and the remote controler
Situation, Simulated family environment are tested repeatedly, finally determine the corresponding numerical value of reasonable A and n.Because in the TV and
The variation of environment where the remote controler can have a certain impact to the test result of the corresponding numerical value of test A and n, therefore
Take the average value of multiple test result.It is such as shown in table 1 by repeatedly testing obtained data as the designer:
Then the corresponding numerical value of the A is to be averaged to the 38dBm, 40dBm and 42dBm, obtains the corresponding number of the A
The 40dBm of value.The corresponding numerical value of the n is to be averaged to described 2.7,3 and 3.3, and obtaining the corresponding numerical value of the n is 3.Then
In the formula 10*lgPRIn=- A-10*nlgr, a unknown number r is only existed, then the TV is according to the formula 10*
lgPR=-A-10*nlgr finds out the distance between remote controler r.
Cue module 40, for when the distance is not when setting within the scope of viewing distance, generation prompt information to be to prompt
User adjusts viewing distance.
The TV compares the setting viewing distance that calculated distance r is stored with it, judges the distance r
Whether within the scope of the setting viewing distance, if the distance r is not within the scope of the setting viewing distance, the TV
Prompt information is generated, and shows the prompt information in its display interface, its user is prompted to adjust viewing distance.The setting is seen
See the viewing ratio of the i.e. described user of distance.The method that user described in the television reminding adjusts viewing distance can also be
Prompt user is carried out by indicator light flashing and adjusts viewing distance, can also export specific sound by loudspeaker to prompt
It states user and adjusts viewing distance etc..When the TV determines that the distance is within the scope of setting viewing distance, continues to play and work as
Preceding video.
The remote command that the present embodiment is sent by receiving remote controler, according to pre-loaded in the telecommand
The distance between TV and the remote controler is calculated in the average signal strength of signal of communication, when the distance is not seen in setting
When seeing in distance range, user is prompted to adjust viewing distance.By being calculated according to the average signal strength of signal of communication
With the remote controler, i.e. the distance between user, the accuracy of distance between measurement TV and user is improved.
Referring to the functional module signal of the second embodiment for the device that Fig. 5, Fig. 5 are present invention detection user's viewing distance
Figure proposes the second embodiment of the device of present invention detection user's viewing distance based on first embodiment.
In the present embodiment, the device of detection user's viewing distance further include:
Memory module 50 corresponds to the setting viewing distance of display pattern for various screen sizes to be stored in advance.
The setting viewing distance that various screen sizes correspond to display pattern is stored in advance in the TV, and such as TV is preparatory
The viewing ratio of the corresponding display pattern of various screen sizes of storage is as shown in table 2:
First sending module 60, for sending signal of communication to the remote controler, so that the remote controler is calculated default
The average signal strength is loaded onto the telecommand by the average signal strength that the signal of communication is received in the time
And send the telecommand；
It is mounted with wireless signal transmitting node on the TV, reception of wireless signals node is mounted on the remote controler.
The TV sends signal of communication to the remote controler by the wireless signal transmitting node.Preferably, the signal of communication
For wireless signal.The i.e. described TV transmits wireless signals to the remote controler by wireless transmission node, and the remote controler passes through
The wireless receiving node receives the wireless signal.When the remote controler receives m wireless signal within a preset time,
Calculate the average signal strength of the m wireless signal.Preferably, the preset time is 1 second.I.e. when the remote controler is 1
When receiving m wireless signal in time second, the average signal strength P of the m wireless signal is calculatedR, i.e.,And resulting average signal strength P will be calculatedRIt is loaded onto the telecommand,
Preferably, by the average signal strength PRIt is loaded onto the telecommand in intensity code, is sent to the TV.When described
When TV does not receive the telecommand, determine to detect user's viewing distance failure.Preferably, when the remote controler is
When IR remote controller, when the remote controler is during sending telecommand to the TV, due to the IR remote controller
The wireless signal of transmitting has rectipetaly, if intermediate have blocking for human body or other objects, the TV will be unable to receive
The key command sent to the remote controler.
Further, first sending module is radiofrequency emitting module, and the receiving module is IR signal reception mould
Block.
First sending module 60 is radiofrequency emitting module, and the receiving module 10 is IR signal reception module.I.e.
The TV sends signal of communication to the remote controler using radio communication, and what the television reception was sent to the remote controler
Telecommand is then infrared signal, i.e., the telecommand is sent to the TV by infrared technique by the described remote controler.Its
In, it includes but is not limited to technology for radio frequency that the TV, which sends signal of communication to the technology of the remote controler,.But for standard
The distance between the TV and the remote controler are really measured, the TV does not use infrared technique to send signal of communication to described
Remote controler.
The present embodiment calculates the average signal strength for multiple signals of communication that TV is sent by remote controler, reduces and is passing
The interference occurred in defeated communication signal procedure keeps the viewing distance for detecting user more accurate, and without adding complicated group
Part reduces costs, and improves the competitiveness of product.
Referring to the functional module signal of the 3rd embodiment for the device that Fig. 6, Fig. 6 are present invention detection user's viewing distance
Figure proposes the 3rd embodiment of the device of present invention detection user's viewing distance based on first embodiment.
In the present embodiment, the device of detection user's viewing distance further include:
Judgment module 70, for judging the average signal strength whether within a preset range；
After the TV parses the average signal strength of the signal of communication from the telecommand, described in judgement
Within a preset range whether average signal strength.Preferably, the preset range is according to the specific of the transmission environment of signal of communication
Situation and set, when the m signal of communication such as sent in one second when the TV is to the remote controler, m communication letter
Number when the TV is just sent, signal strength is consistent, and the signal strength of such as m signal of communication is all
45db, then the average signal strength in the television of the m signal of communication is 45db, described because affected by environment
Signal of communication is when being transmitted to the remote controler, it may appear that a degree of decaying such as can be with then according to transmission environment at that time
The preset range be can be set into 38db to 45db.
Processing module 80, if within a preset range for the average signal strength, thening follow the steps: according to described average
Signal strength calculates to obtain the distance between described remote controler.
If being sent out again in addition, first sending module 60 is also used to the average signal strength not in the normal range
Send signal of communication to the remote controler.
When the TV determines the average signal strength not within a preset range, i.e., the described remote controler receives the electricity
Depending on send some perhaps the decaying of multiple signals of communication is too many or occurs abnormal, cause the remote controler to be calculated
Average signal strength not within a preset range when, the TV will not according to the average signal strength calculate with the remote controler
The distance between, but signal of communication is retransmitted to the remote controler, so that the remote controler recalculates in preset time
The signal of communication received average signal strength.When the TV determines the average signal strength within a preset range
When, it thens follow the steps: the distance between the TV and the remote controler is calculated according to the average signal strength.
The present embodiment is by judging that the average signal is strong when TV parses the average signal strength in telecommand
Degree whether be within a preset range, when the average signal strength not within a preset range when, it is not strong according to the average signal
Degree calculates the distance between described remote controler, i.e., without the detection to user's viewing distance, improves testing result
Accuracy.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (12)
1. it is a kind of detect user's viewing distance method, which is characterized in that it is described detection user's viewing distance method include with
Lower step:
The telecommand that television reception remote controler is sent；
TV parses the telecommand, obtains the average signal strength of signal of communication pre-loaded in the telecommand；
The distance between the TV and the remote controler is calculated according to the average signal strength in TV；
When the distance not set viewing distance within the scope of when, TV generate prompt information with prompt user adjust viewing away from
From；
Wherein, the formula of the distance between the TV and the remote controler is calculated are as follows: 10*lg PR=-A-10*nlgr, PR=
PT/ r*n, r indicate the distance between the TV and the remote controler, PTFor the average signal strength, n is propagation factor,
Size determines by the environment that the signal of communication is propagated, and A is the distance between the TV and the remote controler when being 1 meter, institute
State the absolute value for the remote control command signal average energy that television reception is sent to the remote controler.
2. the method for detection user's viewing distance as described in claim 1, which is characterized in that the television reception remote controler hair
Before the step of telecommand sent, further includes:
TV sends signal of communication to the remote controler, so that remote controler calculating receives the communication within a preset time
The average signal strength is loaded onto the telecommand and sends the telecommand by the average signal strength of signal.
3. the method for detection user's viewing distance as claimed in claim 2, which is characterized in that the TV sends signal of communication
To the remote controler, so that remote controler calculating receives the average signal strength of the signal of communication within a preset time,
Before the step of being loaded onto the telecommand by the average signal strength and send the telecommand, further includes:
The setting viewing distance that various screen sizes correspond to display pattern is stored in advance in TV.
4. the method for detection user's viewing distance as described in any one of claims 1 to 3, which is characterized in that the TV solution
After the step of analysing the telecommand, obtaining average signal strength pre-loaded in the telecommand, further includes:
Within a preset range whether TV judge the average signal strength；
If the average signal strength is within a preset range, then follow the steps: this is calculated according to the average signal strength
The distance between TV and the remote controler.
5. the method for detection user's viewing distance as claimed in claim 4, which is characterized in that the TV judges described average
Signal strength whether within a preset range the step of after, further includes:
If not within a preset range, TV retransmits signal of communication to the remote controler to the average signal strength.
6. the method for detection user's viewing distance as claimed in claim 2, which is characterized in that the TV is sent to described distant
The signal of communication for controlling device uses radio communication, and the telecommand that the television reception arrives is infrared signal.
7. it is a kind of detect user's viewing distance system, which is characterized in that it is described detection user's viewing distance system include:
Receiving module, for receiving the telecommand of remote controler transmission；
Parsing module obtains being averaged for signal of communication pre-loaded in the telecommand for parsing the telecommand
Signal strength；
Computing module, for the distance between TV and the remote controler to be calculated according to the average signal strength；
Cue module, for when the distance is not when setting within the scope of viewing distance, generation prompt information to be to prompt user's tune
Whole viewing distance；
Wherein, the formula of the distance between the TV and the remote controler is calculated are as follows: 10*lg PR=-A-10*nlgr, PR=
PT/ r*n, r indicate the distance between the TV and the remote controler, PTFor the average signal strength, n is propagation factor,
Size determines by the environment that the signal of communication is propagated, and A is the distance between the TV and the remote controler when being 1 meter, institute
State the absolute value for the remote control command signal average energy that television reception is sent to the remote controler.
8. the system of detection user's viewing distance as claimed in claim 7, which is characterized in that detection user's viewing distance
System, further includes:
First sending module, for sending signal of communication to the remote controler, so that the remote controler calculates within a preset time
The average signal strength is loaded onto the telecommand and is sent by the average signal strength for receiving the signal of communication
The telecommand.
9. the system of detection user's viewing distance as claimed in claim 8, which is characterized in that detection user's viewing distance
System, further include memory module, the setting viewing distance of display pattern corresponded to for various screen sizes to be stored in advance.
10. the system of detection user's viewing distance as claimed in claim 8 or 9, which is characterized in that the detection user viewing
The system of distance further include:
Judgment module, for judging the average signal strength whether within a preset range；
Processing module, if within a preset range for the average signal strength, thening follow the steps: strong according to the average signal
The distance between the TV and the remote controler is calculated in degree.
11. the system of detection user's viewing distance as claimed in claim 10, which is characterized in that first sending module is also
If not within a preset range for the average signal strength, retransmitting signal of communication to the remote controler.
12. the system of detection user's viewing distance as claimed in claim 8, which is characterized in that first sending module is
Radiofrequency emitting module, the receiving module are IR signal reception module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907259.9A CN105472432B (en) | 2015-12-09 | 2015-12-09 | Detect the method and system of user's viewing distance |
| PCT/CN2016/084437 WO2017096767A1 (en) | 2015-12-09 | 2016-06-02 | Method and system for measuring viewing distance of user |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907259.9A CN105472432B (en) | 2015-12-09 | 2015-12-09 | Detect the method and system of user's viewing distance |
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| CN105472432B true CN105472432B (en) | 2019-03-01 |
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| WO (1) | WO2017096767A1 (en) |
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| CN105472432B (en) * | 2015-12-09 | 2019-03-01 | 深圳Tcl数字技术有限公司 | Detect the method and system of user's viewing distance |
| US20200245014A1 (en) | 2017-08-29 | 2020-07-30 | Home Control Singapore Pte Ltd | Subtle user recognition |
| CN110290401B (en) * | 2018-03-19 | 2021-02-02 | 北京国双科技有限公司 | Mobile terminal positioning method and device and viewing record processing method, device and system |
| CN112445397A (en) * | 2019-09-02 | 2021-03-05 | 深圳Tcl数字技术有限公司 | Screen adjusting method and system, intelligent terminal and storage medium |
| CN112365828B (en) * | 2020-11-09 | 2024-03-12 | 深圳Tcl新技术有限公司 | Method, device, equipment and medium for intelligently adjusting display effect |
| CN113192468B (en) * | 2021-03-19 | 2022-11-01 | 青岛海信商用显示股份有限公司 | Display adjustment method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005295338A (en) * | 2004-04-01 | 2005-10-20 | Sharp Corp | Picture display unit and character screen display method |
| CN101071302A (en) * | 2005-01-18 | 2007-11-14 | 张旭东 | Method for keeping watching distance with television receiver via body induction |
| US20070016933A1 (en) * | 2005-07-13 | 2007-01-18 | Wollmershauser Steven M | RF signal injector |
| 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 |
| US20080186412A1 (en) * | 2007-02-06 | 2008-08-07 | General Instrument Corporation | Remote Control with Integrated Optical Mouse Functionality |
| CN101931766A (en) * | 2009-06-18 | 2010-12-29 | 深圳Tcl新技术有限公司 | Television with viewing distance warning function and realizing method thereof |
| CN201585054U (en) * | 2009-12-09 | 2010-09-15 | 深圳市九洲电器有限公司 | Program viewing distance reminder and television equipment |
| CN102905091A (en) * | 2011-07-29 | 2013-01-30 | 天津三星电子有限公司 | Television with distance sensor |
| CN102510457A (en) * | 2011-12-16 | 2012-06-20 | Tcl王牌电器(惠州)有限公司 | Method for protecting eyesight |
| CN104767947A (en) * | 2014-01-07 | 2015-07-08 | 冠捷投资有限公司 | Electronic device controlled by radio frequency remote controller |
| CN105472432B (en) * | 2015-12-09 | 2019-03-01 | 深圳Tcl数字技术有限公司 | Detect the method and system of user's viewing distance |
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| WO2017096767A1 (en) | 2017-06-15 |
| CN105472432A (en) | 2016-04-06 |
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