CN102982762A - Display terminal - Google Patents
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- CN102982762A CN102982762A CN2012105730603A CN201210573060A CN102982762A CN 102982762 A CN102982762 A CN 102982762A CN 2012105730603 A CN2012105730603 A CN 2012105730603A CN 201210573060 A CN201210573060 A CN 201210573060A CN 102982762 A CN102982762 A CN 102982762A
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Abstract
The invention discloses a display terminal, which comprises a frequency detection unit, a command input switching unit and a frequency setting unit, wherein the frequency detection unit is used for detecting frequency of a power grid where the display terminal is located in real time; the command input switching unit is used for acquiring a frequency switching control command input by a user in real time; the frequency setting unit is connected with the frequency detection unit and the command input switching unit respectively and used for receiving the frequency of the power grid where the display terminal is located, sets the frequency as refresh frequency of the display terminal, sets an integral multiple of the refresh frequency of the display terminal as 3D (three-dimensional) synchronous frequency, prestores at least two frequencies of the power grid, and select one frequency as the refresh frequency of the display terminal; and the 3D synchronous frequency is frequency of the display terminal and external 3D watching equipment for synchronous display. The display terminal such as a television set can automatically and manually adjust the 3D synchronous frequency according to the power grid where the display terminal is located, and prevent a user from obvious flicker senses when the user watches a 3D video by wearing shutter 3D glasses.
Description
Technical field
The present invention relates to the display technique field, particularly relate to a kind of display terminal.
Background technology
Development along with China's science and technology, the domestic electric appliances such as televisor, video camera, camera are more and more universal in people's daily life, people often understand the information of outside with display and learn, and display has become people's indispensable ingredient of living.
For display terminals such as present display and televisors, in order to realize shutter 3D Presentation Function, need to be with the refreshing frequency of the refreshing frequency of shutter type 3 D spectacles and display terminal synchronously (refreshing frequency of shutter type 3 D spectacles be the integral multiple of described display terminal refreshing frequency), thus realize the 3D video capability.
At present, be subject to the frequency restriction of display terminal power supply, for display terminals such as China's 3D display on sale and televisors, in order to realize shutter 3D Presentation Function, the synchronizing frequency between described shutter type 3 D spectacles and the display terminal generally is fixed on 50Hz, still, for in Korea S, Japan, the national product sold such as the U.S., the synchronizing frequency between described shutter type 3 D spectacles and the display terminal (referred to as the 3D synchronizing frequency) generally is fixed on 60Hz.
When the user watched on the display terminal in progress 3D video with the 3D glasses, the 3D synchronizing frequency was generally 50Hz or 60Hz.Generally be indoor in view of the user watches the 3D video, most of time can be opened daylight lamp, and the frequency of domestic electrical network is 50Hz, thereby the flicker frequency of daylight lamp is 50Hz.When the 3D synchronizing frequency is 50Hz, because 3D glasses refreshing frequency is identical with the daylight lamp flicker frequency, do not have flickering.But, when the 3D synchronizing frequency be 60Hz, when mains frequency is 50Hz, perhaps when mains frequency be 60Hz, when the 3D synchronizing frequency is 50Hz, because the daylight lamp flicker frequency in the environment of user place and the brush of 3D glasses screen frequency there are differences, will cause so the user when wearing the 3D glasses, feel environment light obvious flickering is arranged, thereby cause user's eye fatigue, not only seriously reduce user's visual experience impression, and badly influenced the healthy of user.
At present, for the general display terminals such as Domestic Television, for overcome environment light watch the impact of 3D video for the user, when producing, the synchronizing frequency between described shutter type 3 D spectacles and the display terminal (3D synchronizing frequency) is arranged on 50Hz.But, if the display terminals such as these Domestic Televisions are exported to the U.S., when Japan and Korea S etc. are external, because local mains frequency is 60Hz, the user visually will have serious flickering so, equally, if the televisor of foreign producer is sold to China, equally can be so that the user visually has serious flickering.
Therefore, at present in the urgent need to developing a kind of technology, it can allow the display terminals such as televisor have different 3D synchronizing frequencies with shutter type 3 D spectacles in different countries, make the 3D synchronizing frequency identical with the mains frequency of the country one belongs to, avoid the user to have obvious flickering when shutter type 3 D spectacles is watched the 3D video wearing, strengthen user's visual experience, bring convenience for user's routine work and life, improve user's quality of life.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of display terminal, it can allow the display terminal such as televisor and shutter type 3 D spectacles automatically and manually adjust the 3D synchronizing frequency according to the place electrical network, make the 3D synchronizing frequency identical with the mains frequency of the country one belongs to, avoid the user to have obvious flickering when shutter type 3 D spectacles is watched the 3D video wearing, strengthen user's visual experience, bring convenience for user's routine work and life, improve user's quality of life, be of great practical significance.
For this reason, the invention provides a kind of display terminal, comprising:
Frequency detecting unit is used for the in real time frequency of the described display terminal of detection place electrical network, then sends to the set of frequency unit;
The set of frequency unit, be connected with frequency detecting unit, frequency for the display terminal place electrical network that receives described frequency detecting unit transmission, the frequency of this display terminal place electrical network is set as the refreshing frequency of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency;
Described 3D synchronizing frequency is the frequency that described display terminal and outside 3D evaluation equipment carry out simultaneous display.
Wherein, described frequency detecting unit comprises a field effect transistor Q, the grid G of described field effect transistor Q is connected with a resistance R 1 with a resistance R 2 respectively by a resistance R 3, described resistance R 1 ground connection, and described resistance R 2 is connected with the live wire L of described display terminal place electrical network;
The source S ground connection of described field effect transistor Q, the drain D of described field effect transistor Q is connected with a resistance R 5 with a resistance R 4 respectively, described resistance R 4 is connected with a supply voltage VCC, and described resistance R 5 is connected with the first universal input output control mouthful GPIO1.
Described display terminal also comprises:
The switching command input block is connected with described set of frequency unit, is used for the frequency switching controls instruction of Real-time Collection user input, then is transmitted to the set of frequency unit;
Described set of frequency unit, also be used for pre-stored at least two kinds of mains frequencies, receive the frequency switching controls instruction of user's input, then according to this frequency switching controls instruction, wherein a kind of mains frequency is as the refreshing frequency of described display terminal for corresponding selection, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency.
Wherein, the set of frequency unit is used for pre-stored 50 hertz and 60 hertz of two kinds of mains frequencies;
Described switching command input block is a switch key of installing on the described display terminal.
Wherein, described switching command input block comprises a switch key K, described switch key K one end ground connection, the other end of described switch key K connects respectively a resistance R 6 and resistance R 7, described resistance R 7 is connected with a supply voltage VCC, and described resistance R 6 is connected with the second universal input output control mouthful GPIO2.
Wherein, described display terminal is 3D display or 3D televisor.
Wherein, described set of frequency unit is central processor CPU, digital signal processor DSP or the single-chip microprocessor MCU of installing on the described display terminal.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of display terminal, it can detect automatically by frequency detecting unit the frequency of described display terminal place electrical network, so that the set of frequency unit can arrange the frequency of this display terminal place electrical network as the refreshing frequency of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency, can also allow simultaneously user's artificial selection mains frequency, make the 3D synchronizing frequency identical with the mains frequency of the country one belongs to, realized to the automatic control of the refreshing frequency of display terminal and manually control combine.Therefore can effectively avoid the user to have obvious flickering when shutter type 3 D spectacles is watched the 3D video wearing, strengthen user's visual experience, bring convenience for user's routine work and life, significantly strengthen the user to the product use impression of display terminal, improve user's quality of life, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of a kind of display terminal embodiment one provided by the invention;
Fig. 2 is the circuit diagram of a kind of display terminal embodiment one medium frequency detecting unit provided by the invention;
Fig. 3 is the structural representation of a kind of display terminal embodiment two provided by the invention;
Fig. 4 is the circuit diagram of switching command input block among a kind of display terminal embodiment two provided by the invention.
Embodiment
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1, the invention provides a kind of display terminal and comprise:
Set of frequency unit 102, be connected with frequency detecting unit 101, frequency for the display terminal place electrical network that receives described frequency detecting unit transmission, the frequency of this display terminal place electrical network is set as the refreshing frequency (being field frequency) of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency;
Described 3D synchronizing frequency is the frequency that described display terminal and outside 3D evaluation equipment (for example external shutter formula 3D glasses and other outside 3D evaluation equipments) carry out simultaneous display.In the present invention, described display terminal can comprise mobile phone, PDA(palm PC), any device with menu display function such as mobile PC, panel computer, display.
In the present invention, on the specific implementation, described set of frequency unit 102 can be central processor CPU, digital signal processor DSP or the single-chip microprocessor MCU of installing on the described display terminal.
Need to prove, for display terminal provided by the invention, can be detected by frequency detecting unit the frequency of described display terminal place electrical network, then the frequency of this display terminal place electrical network is set as the refreshing frequency (being field frequency) of described display terminal by set of frequency unit 102, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency, realizes allowing described display terminal and outside 3D evaluation equipment carry out simultaneous display.Therefore, the present invention can be according to the frequency of automatic detection display terminal place electrical network and refreshing frequency and the 3D synchronizing frequency of corresponding adjustment display terminal, thereby can allow the display terminals such as televisor automatically have different 3D synchronizing frequencies with shutter type 3 D spectacles at different electrical network (for example electrical network of country variant), make the 3D synchronizing frequency identical with place mains frequency (such as the mains frequency of the country one belongs to), avoid the user to have obvious flickering when shutter type 3 D spectacles is watched the 3D video wearing, can realize watching equal flicker free sense with a display terminal in different countries, therefore strengthen user's visual experience, bring convenience for user's routine work and life, significantly strengthen the user to the product use impression of display terminal, improve user's quality of life, be of great practical significance.
On the specific implementation, for the present invention, described display terminal is preferably 3D display or 3D televisor.
In the present invention, on the specific implementation, referring to Fig. 2, described frequency detecting unit 101 comprises a field effect transistor Mosfet Q, the grid G of described field effect transistor Q is connected with a resistance R 1 with a resistance R 2 respectively by a resistance R 3, described resistance R 1 ground connection, described resistance R 2 is connected with the live wire L of described display terminal place electrical network, and described live wire is used for the input line voltage;
The source S ground connection of described field effect transistor Q, the drain D of described field effect transistor Q is connected with a resistance R 5 with a resistance R 4 respectively, described resistance R 4 is connected with the supply voltage VCC of 3.3V size, and described resistance R 5 is connected with the first universal input output control mouthful GPIO1.
Need to prove, referring to Fig. 2, after the line voltage process resistance R 2 and resistance R 1 dividing potential drop of the input of described display terminal place electrical network live wire, drive field effect transistor Q, mains voltage signal is converted to square-wave signal.Be specially: the low voltage drive field effect transistor Q after resistance R 2 and resistance R 1 dividing potential drop, when the voltage ratio source S of the grid G of field effect transistor Q was high, field effect transistor Q conducting was from drain D utmost point output low level; When the voltage ratio source S of grid G is hanged down, not conducting of field effect transistor Q, drain D output high level, thereby the conversion of realization sinusoidal signal and square-wave signal.
Square-wave signal is input to described the first universal input output control mouthful GPIO1, described the first universal input output control mouthful GPIO1 is used for setting in advance two kinds of different mains frequencies and corresponding line voltage output level size and duration, and the duration of real time record square-wave signal, according to the duration of this square wave signal, obtain corresponding mains frequency.
For example, on the specific implementation, electrical network for 50 hertz and 60 hertz, described the first universal input output control mouthful GPIO1 can distinguish 50 hertz and 60 hertz by the duration of record square wave high level, wherein, the high level lasting time of 50Hz electrical network is longer than 60Hz, in addition, can also be to the square-wave signal high level time summation in a plurality of cycles (such as 10), to increase the separating capacity to 50Hz and 60Hz signal.
Therefore, for the present invention, can automatically detect by frequency detecting unit the frequency of described display terminal place electrical network, so that the set of frequency unit can arrange the frequency of this display terminal place electrical network as the refreshing frequency (being field frequency) of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency, need not user's artificial selection mains frequency, realized the automatic control to the refreshing frequency of display terminal, be conducive to make things convenient for user's regular job control display terminal, can reduce user's working strength, the product that strengthens the user uses impression.
Referring to Fig. 3, display terminal provided by the invention also comprises: described switching command input block 103, also be used for the frequency switching controls instruction of Real-time Collection user input, and then be transmitted to set of frequency unit 102;
Accordingly, set of frequency unit 102, be connected with switching command input block 103, also be used for pre-stored at least two kinds of mains frequencies, receive the frequency switching controls instruction of user's input, then according to this frequency switching controls instruction, wherein a kind of mains frequency is as the refreshing frequency (being field frequency) of described display terminal for corresponding selection, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency.
Therefore, for display terminal provided by the invention, after having adjusted frequency according to frequency detecting unit, in order to allow the user can further facilitate the refreshing frequency of user's manual control display terminal, the user still can be by the manual frequency switching controls instruction of switching command input block 103 inputs, mains frequency is manually adjusted, realize the refreshing frequency of manual switchover control display terminal, in case stop-pass is crossed the adjustment that the detection of grid frequency carries out error is arranged, so that the user is not glimmered, meet user's actual user demand when watching the 3D video.
In the present invention, on the specific implementation, for at least two kinds of mains frequencies in the described set of frequency unit 102, can arrange according to the needs of user and display terminal manufacturer, the user can be when first the use and the random time in the use procedure set, can also when dispatching from the factory, set in advance by display terminal manufacturer, to make things convenient for the user mains frequency carried out operation setting flexibly.For example, the mains frequency 60Hz of the storage U.S., Korea S, Japan can be set, China Power Grids frequency 50Hz.
On the specific implementation, described set of frequency unit 102 also is used for pre-stored 50 hertz and 60 hertz of two kinds of mains frequencies.Described switching command input block 103 can be a switch key of installing on the described display terminal, thereby the refreshing frequency that the user can the described display terminal of manual mode switching controls, be specially: the user passes through back and forth Manual press switch key, can pass through set of frequency unit 102, realize switching a kind of refreshing frequency as described display terminal (being field frequency) of selecting in two kinds of mains frequencies, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency.
Referring to Fig. 4, described switching command input block 103 comprises a switch key K, described switch key K is used for gathering the frequency switching controls instruction (for example switch order) of user's input, described switch key K one end ground connection, the other end of described switch key K connects respectively a resistance R 6 and resistance R 7, described resistance R 7 is connected with the supply voltage VCC of a 3.3V size, and described resistance R 6 is connected with the second universal input output control mouthful GPIO2;
Described the second universal input output control mouthful GPIO2 is used for the frequency switching controls instruction according to described switch key K reception, switches a kind of refreshing frequency as described display terminal of selecting in two kinds of mains frequencies.
In sum, compared with prior art, the invention provides a kind of display terminal, it can detect automatically by frequency detecting unit the frequency of described display terminal place electrical network, so that the set of frequency unit can arrange the frequency of this display terminal place electrical network as the refreshing frequency (being field frequency) of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency, can also allow simultaneously user's artificial selection mains frequency, make the 3D synchronizing frequency identical with the mains frequency of the country one belongs to, realized to the automatic control of the refreshing frequency of display terminal and manually control combine.Therefore can effectively avoid the user to have obvious flickering when shutter type 3 D spectacles is watched the 3D video wearing, strengthen user's visual experience, bring convenience for user's routine work and life, significantly strengthen the user to the product use impression of display terminal, improve user's quality of life, be of great practical significance.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a display terminal is characterized in that, comprising:
Frequency detecting unit is used for the in real time frequency of the described display terminal of detection place electrical network, then sends to the set of frequency unit;
The set of frequency unit, be connected with frequency detecting unit, frequency for the display terminal place electrical network that receives described frequency detecting unit transmission, the frequency of this display terminal place electrical network is set as the refreshing frequency of described display terminal, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency;
Described 3D synchronizing frequency is the frequency that described display terminal and outside 3D evaluation equipment carry out simultaneous display.
2. display terminal as claimed in claim 1, it is characterized in that, described frequency detecting unit comprises a field effect transistor Q, the grid G of described field effect transistor Q is connected with a resistance R 1 with a resistance R 2 respectively by a resistance R 3, described resistance R 1 ground connection, described resistance R 2 is connected with the live wire L of described display terminal place electrical network;
The source S ground connection of described field effect transistor Q, the drain D of described field effect transistor Q is connected with a resistance R 5 with a resistance R 4 respectively, described resistance R 4 is connected with a supply voltage VCC, and described resistance R 5 is connected with the first universal input output control mouthful GPIO1.
3. display terminal as claimed in claim 1 is characterized in that, also comprises:
The switching command input block is connected with described set of frequency unit, is used for the frequency switching controls instruction of Real-time Collection user input, then is transmitted to the set of frequency unit;
Described set of frequency unit, also be used for pre-stored at least two kinds of mains frequencies, receive the frequency switching controls instruction of user's input, then according to this frequency switching controls instruction, wherein a kind of mains frequency is as the refreshing frequency of described display terminal for corresponding selection, and the integral multiple of described display terminal refreshing frequency is set to the 3D synchronizing frequency.
4. display terminal as claimed in claim 3 is characterized in that, described set of frequency unit is used for pre-stored 50 hertz and 60 hertz of two kinds of mains frequencies; Described switching command input block is a switch key of installing on the described display terminal.
5. display terminal as claimed in claim 3, it is characterized in that, described switching command input block comprises a switch key K, described switch key K one end ground connection, the other end of described switch key K connects respectively a resistance R 6 and resistance R 7, described resistance R 7 is connected with a supply voltage VCC, and described resistance R 6 is connected with the second universal input output control mouthful GPIO2.
6. such as each described display terminal in the claim 1 to 5, it is characterized in that described display terminal is 3D display or 3D televisor.
7. such as each described display terminal in the claim 1 to 5, it is characterized in that described set of frequency unit is central processor CPU, digital signal processor DSP or the single-chip microprocessor MCU of installing on the described display terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210573060.3A CN102982762B (en) | 2012-12-26 | 2012-12-26 | A kind of display terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210573060.3A CN102982762B (en) | 2012-12-26 | 2012-12-26 | A kind of display terminal |
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| CN102982762A true CN102982762A (en) | 2013-03-20 |
| CN102982762B CN102982762B (en) | 2015-11-18 |
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| CN201210573060.3A Expired - Fee Related CN102982762B (en) | 2012-12-26 | 2012-12-26 | A kind of display terminal |
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Cited By (2)
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| CN110473495A (en) * | 2019-09-12 | 2019-11-19 | 欧姆龙(上海)有限公司 | The method for refreshing and device of light-emitting component |
| CN113473213A (en) * | 2021-09-03 | 2021-10-01 | 深圳佳力拓科技有限公司 | Digital television display method and device based on Bluetooth black screen glasses |
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