KR101344022B1 - Reception control method of ir sync signal - Google Patents

Reception control method of ir sync signal Download PDF

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Publication number
KR101344022B1
KR101344022B1 KR1020120064509A KR20120064509A KR101344022B1 KR 101344022 B1 KR101344022 B1 KR 101344022B1 KR 1020120064509 A KR1020120064509 A KR 1020120064509A KR 20120064509 A KR20120064509 A KR 20120064509A KR 101344022 B1 KR101344022 B1 KR 101344022B1
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South Korea
Prior art keywords
eye lens
synchronization signal
period
received
refresh rate
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KR1020120064509A
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Korean (ko)
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장기수
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주식회사 아이엠케이
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

The present invention discloses a method for controlling IR synchronization signal reception. The present invention calculates a width and a period of an IR synchronization signal received when different IR synchronization signals are received, and then adjusts the refresh rate according to the calculated width and period. It is configured to sequentially control the opening and closing of the left and right lenses according to the refresh rate, and accordingly to synchronize the 3D images of the image display devices that transmit different types of IR synchronization signal to a single 3D glasses In addition to allowing viewing, the duty ratio is adjusted according to the needs of the image display manufacturer, so that even if the time interval of the IR synchronization signal is changed, it is more convenient to cope with it, thereby enhancing its convenience.

Description

IR control signal reception control method

The present invention relates to an IR synchronization signal reception control method of 3D glasses, and more particularly, when the IR synchronization signal for opening and closing the lens of the left and right eyes is different from a predetermined rule, the width and period of the received IR synchronization signal are different. The present invention relates to an IR synchronization signal reception control method for allowing the opening and closing of the left and right eye lenses to be sequentially controlled by checking a refresh rate according to the calculated width and period.

In general, the 3D image implemented by the 3D image display device is composed of a left eye image recognized by the left eye and a right eye image recognized by the right eye, and the 3D image display device uses a parallax between the left eye image and the right eye image to The three-dimensional image display device is to be expressed as a three-dimensional image, the glasses are divided into glasses using a special glasses, non-glasses do not use special glasses.

Here, the spectacle type is a color filter method for separating and selecting images using a color filter having a complementary color relationship, a polarization filter method for separating images of left and right eyes using a light shielding effect by a combination of orthogonal polarizing elements, and a left eye. There is a shutter glasses type that allows the user to feel a three-dimensional effect by alternately blocking the left and right eyes in response to a synchronization signal for projecting the right and right image signals onto the screen.

In this case, in the case of the shutter glass method, a glasses shutter control method unique to each manufacturer of an image display device (TV) is used, which contributes to cross-talk reduction by company, and the protocol is mutually shared. And by incorporating company-specific technology so as not to be confused, so as to prevent mutual interoperability between companies so as to differentiate themselves from other companies.

That is, depending on the manufacturer of the image display device, there is a method of controlling the left and right lenses with one IR waveform, and a method of controlling the lens with two IR waveforms, and a method of controlling the lens with up to four IR waveforms. As the number of IR waveforms controlling the lens increases, the method of controlling the lens becomes more difficult, but on the other hand, since more accurate control is possible, manufacturers of each image display device adopt a unique left and right lens control method. Differentiation is marketing the excellence of its products.

Accordingly, in the related art, when an IR synchronization signal provided by a manufacturer of an image display device is input through an IR receiving module, an analog input value is converted into a digital value through an AD converter having a predetermined resolution, and thus inputted. It uses hardware driver IC that checks whether there is a matching value in the tabled database of company-specific IR sync signal.

However, the 3D glasses made of the hardware driving IC as described above have the advantage that only the appropriate circuit is configured by using the hardware driving chip without the need to modify the software to receive the IR sync signal for each company. However, when the IR sync signal adjusts the duty ratio according to the needs of the video display device manufacturer for various reasons, there is a disadvantage in that the synchronization is not performed at all as the time interval of the IR sync signal is changed. There was a burden of adding an external micro control unit (MCU) or redesigning the driver IC to synchronize the control.

Therefore, it is difficult to implement 3D images of image display devices that transmit various types of IR synchronization signals as one 3D glasses as described above, even if they are implemented by a hardware drive chip or software that is prepared in advance. In this regard, countermeasures are required.

The present invention is to improve the above-described problems, and after calculating the width and period of the IR synchronization signal received when different IR synchronization signal is received, the refresh rate according to the calculated width and period (Refresh Rate) And control the opening and closing of the left and right lenses sequentially according to the checked refresh rate, so that 3D images of image display devices that transmit different types of IR synchronization signals can be viewed with one 3D glasses. The purpose of the present invention is to provide an IR synchronization signal reception control method that improves the convenience of use.

In accordance with another aspect of the present invention, there is provided a method of controlling an IR synchronization signal reception, comprising: calculating a width and a period of an IR synchronization signal received when an unsynchronized IR synchronization signal is received; A second step of determining whether an IR synchronization signal having a width and a period calculated from the first step is received periodically over a set reference number; A third step of determining whether the received IR synchronization signal is one or more when periodically receiving the IR synchronization signal more than a predetermined number of times as a result of the determination of the second step; A fourth step of sequentially controlling opening and closing of the left eye lens and the right eye lens of the 3D glasses through one IR synchronization signal, if the IR synchronization signal periodically received is one; A fifth step of determining whether the plurality of IR synchronization signals are repeatedly received in one group if the plurality of IR synchronization signals periodically received are determined as the result of the third step; And when a group including a plurality of IR synchronization signals periodically received is repeatedly received as a result of the determination of the fifth step, the left eye lens and the right eye lens are provided with a plurality of IR synchronization signals existing in the one group that is repeatedly received. A sixth step of sequentially controlling the opening and closing of the; .

In addition, when a plurality of groups including a plurality of IR synchronization signals that are periodically received are repeatedly received as a result of the determination of the third step, the other half of the plurality of repeatedly received groups are processed as wrong signals, A seventh step of recognizing the groups as a synchronization signal and sequentially controlling opening and closing of the left eye lens and the right arm with the IR synchronization signal existing in the groups; You can also proceed with more.

In addition, the period of the reference frequency set in the second step is three times.

In addition, the fourth step may include: checking whether the period of the IR synchronization signal is a multiple of the refresh rate; If the period of the IR synchronization signal is a multiple of the refresh rate from step 41, the right eye lens of the 3D glasses is opened and the left eye lens is closed during the first half of the refresh rate, and the left eye lens of the 3D glasses is opened during the remaining half of the refresh rate. A 42nd step of controlling by the time of the refresh rate to close the; And a forty-third step of repeating the control of the forty-first step and the forty-second step by the time of the refresh rate; As shown in FIG.

In addition, the sixth step may include: a sixty-one step of checking whether a plurality of IR synchronization signals form a group for a predetermined time and repeatedly receive the group at a predetermined period, and whether the period of the repeatedly received group is a multiple of the refresh rate; In step 61, if the period of the group is a multiple of the refresh rate, the right eye lens of the 3D glasses is opened and the left eye lens is closed during the first half of the refresh rate. A sixty-second step of controlling by a time of the refresh rate to be performed; And step 63 of repeating the control of steps 61 and 62 by the time of the refresh rate. As shown in FIG.

In addition, the seventh step may include: recognizing the repeatedly received groups as synchronization signals when a plurality of groups, which are not processed as wrong signals, are repeatedly received at regular intervals while forming a plurality of small groups; Among the groups recognized from step 71, the left eye lens and the right lens are closed at the same time through the IR sync signals between the first and second groups, the right eye lens is opened through the IR sync signals in the second group, and the IR between the third and the fourth group. Closing the right eye lens and the left eye lens simultaneously through the synchronization signals and controlling the left eye lens to be opened through the IR synchronization signal in the fourth group; And a seventy seventh step of repeating the control of the seventy-first and seventy-seventh steps; As shown in FIG.

In addition, in step 72, the period of closing the left eye lens and the right lens simultaneously through the IR synchronization signals between the first and second groups is to be viewed as the opening of the right eye lens on the left screen of the image display device, which is a screen viewed by the left eye lens. The replacement time of the left-eye lens and the right-hand lens through the IR synchronization signals between the third and fourth groups at the same time is the replacement time of the left-eye lens on the right screen of the video display device. It is the replacement time of the left display of the video display device to be viewed as open.

In addition, in the seventh step, when a plurality of groups not processed as wrong signals are repeatedly received at a predetermined period while forming a plurality of small groups, the waveform is incorrect when the refresh rate of the predetermined period which is repeatedly received exceeds a certain operating frequency. Recognizing as; .

As described above, the present invention calculates the width and period of the IR synchronization signal received when different IR synchronization signals are received, and then checks the refresh rate according to the calculated width and period, and determines the left and right eyes according to the checked refresh rate. It is configured to sequentially control the opening and closing of the lens, thereby allowing the 3D images of the video display devices that transmit different types of IR synchronization signals to be synchronized and viewed with one 3D glasses, and in particular, If the duty is adjusted as necessary, even if the time interval of the IR synchronization signal is changed, it is possible to cope with this more efficiently, and the effect of improving the convenience of use can be expected.

1 is a schematic configuration diagram of a 3D image display apparatus according to an embodiment of the present invention.
2 is a reception waveform diagram for one group including one IR synchronization signal for controlling the opening and closing of the left eye lens and the right eye lens of the 3D glasses according to an embodiment of the present invention.
3 is a reception waveform diagram for one group including a plurality of IR synchronization signals for controlling the opening and closing of the left eye lens and the right eye lens of the 3D glasses according to an embodiment of the present invention.
FIG. 4 is a reception waveform diagram of a plurality of groups including a plurality of IR synchronization signals for controlling opening and closing of left and right eye lenses of 3D glasses according to an embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic configuration diagram of a 3D image display apparatus according to an embodiment of the present invention, Figure 2 is an embodiment of the present invention includes one IR synchronization signal for controlling the opening and closing of the left and right lenses of the 3D glasses 3 is a reception waveform diagram for one group, and FIG. 3 is a reception waveform diagram for one group including a plurality of IR synchronization signals for controlling opening and closing of left and right eye lenses of 3D glasses according to an embodiment of the present invention. 4 is a diagram illustrating reception waveforms for a plurality of groups including a plurality of IR synchronization signals for controlling opening and closing of left and right eye lenses of 3D glasses according to an exemplary embodiment of the present invention.

1 to 4, an IR synchronization signal reception control method according to an embodiment of the present invention includes a left eye lens and a right eye lens from a wireless communication unit of an image display device 200. A 3D image display apparatus for receiving a 3D image displayed on the image display device 200 according to the received IR synchronization signal after receiving the IR synchronization signal for opening and closing the, the image display device 200 When the IR sync signal transmitted from the 3D glasses 100 does not match the sync signal receiving method set by the synchronization, it is received, so that it is possible to control the opening and closing of the left and right lenses of the 3D glasses at an accurate period, The first to sixth steps, in addition to the seventh step is to proceed.

In the first step, any unsynchronized IR synchronization signal, that is, IR synchronization signal transmitted from the image display device 200, is not synchronized with the reception method of the 3D glasses 100. The timing of alternating between the right and right eye images is different, or the IR sync signal is adjusted for various reasons, and the duty ratio is adjusted according to the needs of the video display device manufacturer to change the time interval of the IR sync signal. When the non-IR sync signal is received by the 3D glasses 100, the width and the period for the received IR sync signal are calculated.

The second step is to determine whether the IR synchronization signal having the width and period calculated from the first step is periodically received for a predetermined reference number (eg, three times).

In the third step, when the IR synchronization signal is periodically received for a predetermined number of times (for example, three times) as a result of the determination in the second step, it is determined whether one or more IR synchronization signals are received.

The fourth step is to control the opening and closing of the left eye lens and the right eye lens of the 3D glasses sequentially through one IR synchronization signal when there is one IR synchronization signal periodically received as a result of the determination of the third step. The method further includes steps 41 to 43.

That is, the forty-first step is to check whether the period of the IR synchronization signal is a multiple of the refresh rate, and the forty-second step is for half the period of the first refresh rate when the period of the IR synchronization signal is a multiple of the refresh rate. The right eye lens of the 3D glasses is opened and the left eye lens is closed, and during the remaining half of the refresh rate, the left eye lens of the 3D glasses is controlled by the time of the refresh rate for closing the right eye lens, and the 43rd step is the time of the refresh rate. The control of steps 41 and 42 is repeated once more.

For example, as shown in FIG. 2, when one IR synchronization signal D having a period of a predetermined width A and a predetermined time B is repeatedly received three times or more periodically (D, D1, ...), one IR synchronization signal D periodically received becomes one group.

Then, it is first checked whether the period of the predetermined time B is a multiple of the refresh rate. If the period of the predetermined time B is a multiple of the refresh rate, the first half of the first refresh rate is initially determined. During the time, the right eye lens R of the 3D glasses 100 is opened and the left eye lens L is closed. During the remaining half of the refresh rate, the right eye lens R of the 3D glasses 100 is closed and the left eye lens L is closed. ), And this control operation is performed by the time of the refresh rate, and in particular, by repeating the above-described control operation once more, the IR synchronization signal which is not synchronized from the video display device 200 is transmitted and 3D. When the glasses 100 receive this, the 3D glasses 100 may synchronize the timing of alternating the right eye image and the left eye image of the 3D image transmitted from the image display device 200. It will be able to watch a normal 3D image through the 3D glasses 100.

Here, when opening / closing control of the right eye lens R and the left eye lens L of FIG. 2 is performed, the time C existing between the right eye lens R and the left eye lens L is 3D glasses ( The response characteristics of the LCD used as the right / left eye lens of 100) and the response characteristics of the LCD used in the image display device 200 are considered. Therefore, the time C is not limited to a specific time and is variable. will be.

In the fifth step, when there are a plurality of IR synchronization signals periodically received as a result of the determination of the third step, it is determined whether the plurality of IR synchronization signals are repeatedly received in one group.

In the sixth step, when one group including a plurality of IR synchronization signals periodically received as a result of the determination of the fifth step is performed, the left eye lens includes a plurality of IR synchronization signals existing in the one group that is repeatedly received. It is to control the opening and closing of the right eye lens and the right eye, and comprises the 61st to 63rd step.

In step 61, when a plurality of IR synchronization signals form a group for a predetermined time and repeatedly receive at a predetermined period, it is checked whether the period of the repeatedly received group is a multiple of the refresh rate.

In step 62, when the period D of the group D is a multiple of the refresh rate, the right eye lens of the 3D glasses 100 is closed and the left eye lens is closed during the first half of the refresh rate. During this time, the left eye lens of the 3D glasses 100 is opened and the control is performed by the time of the refresh rate to close the right eye lens, and the step 63 is the control of the steps 61 and 62 by the time of the refresh rate. Will be repeated.

For example, as shown in FIG. 3, an IR synchronization signal is received four times for a predetermined time E while having a predetermined width A1 and A2, and the IR synchronization signal received four times is a predetermined time H. When the signal is repeatedly received three or more times in a period of, the IR synchronization signals received four times as the predetermined width A1 + A2 form one group F, and the group F is a period of a predetermined time H. When it is repeatedly received (F, F1, ...), it is first checked whether the group F repeatedly received in the period of the predetermined time H is a multiple of the refresh rate.

At this time, if the group F repeatedly received from the inspection result in a period of a predetermined time (H) is a multiple of the refresh rate, the left eye is opened by opening the right eye lens R of the 3D glasses 100 for half an hour of the first refresh rate. The lens L is controlled to be closed, and the right eye lens R is closed and the left eye lens L is opened for half an hour of the remaining refresh rate, and this control operation is performed by the time of the refresh rate. By repeating the above-described control operation once more, when the 3D glasses 100 receive the IR synchronization signal that is not synchronized from the image display device 200 and the 3D glasses 100 receive the image display device 200. In this case, the timing of alternating the right eye image and the left eye image of the 3D image transmitted from the 3D image may be synchronized. Accordingly, the user may watch a normal 3D image through the 3D glasses 100.

Here, when opening / closing control of the right eye lens R and the left eye lens L of FIG. 3 is performed, the time G existing between the right eye lens R and the left eye lens L is 3D glasses ( The response characteristics of the LCD used as the right / left eye lens of 100) and the response characteristics of the LCD used in the image display device 200 are considered. Therefore, the time C is not limited to a specific time and is variable. will be.

In the seventh step, when a plurality of groups including a plurality of IR synchronization signals periodically received from the determination result of the third step is repeatedly received, half of the groups among the plurality of repeatedly received signals are processed as wrong signals. Afterwards, the other half of the groups are recognized as a synchronization signal, and the opening and closing of the left eye lens and the right arm are sequentially controlled by an IR synchronization signal existing in the groups, which proceeds from steps 71 to 73.

In step 71, when a plurality of groups not processed as wrong signals are repeatedly received at regular intervals while forming a plurality of small groups, the repeatedly received groups may be recognized as synchronization signals.

In step 72, the left eye lens and the right lens are closed at the same time through the IR sync signals between the first and second groups among the recognized groups, the right eye lens is opened through the IR sync signals in the second group, and between the third and fourth groups. The right eye lens and the left arm lens are closed at the same time through the IR sync signals, and the left eye lens is controlled to be opened by the IR sync signals in the fourth group. In step 73, the control of steps 71 and 72 is repeated. will be.

For example, as shown in FIG. 4, the plurality of IR synchronization signals are configured as one group (a1, a2, a3, a4, a1 ', a2', a3 ', a4'), and the group is 8 When there are dogs, the groups a1, a2, a3, a4, a1 ', a2', a3 ', and a4' are each composed of two small groups, and groups including the two small groups a1. When, a2, a3, a4 is repeatedly received in a period of a predetermined time k (a1, a2, a3, a4, a1 ', a2', a3 ', a4'), the 3D glasses 100 may The groups of a1, a2, a3, and a4 are recognized as IR synchronization signals, and the remaining groups of a1 ', a2', a3 'and a4' are treated as wrong signals.

Accordingly, among the groups a1, a2, a3, and a4 recognized as the IR synchronization signal, the right eye lens R and the left eye lens R may be connected to each other through the IR synchronization signal A3 between the first and second groups a1 and a2. L) is simultaneously closed, while the right eye lens R and the left eye lens L are simultaneously controlled through the IR synchronization signal A4 between the third and fourth groups a3 and a4, while the second and third eyes are simultaneously closed. The right eye lens R is opened through the IR sync signals between the groups a2 and a3, and the left eye lens L is opened through the IR sync signals between the fourth and fifth groups a4 and a1 '. Will be done.

Here, the period of closing the right eye lens R and the left eye lens L at the same time through the IR synchronization signal A3 between the first and second groups a1 and a2 is an image viewed by the left eye lens L. It means the replacement time O from the left screen of the display device 200 to the right screen of the image display device 200 to be viewed as the opening of the right eye lens R.

In addition, the period of controlling to close the right eye lens R and the left eye lens L simultaneously through the IR synchronization signal A4 between the third and fourth groups a3 and a4 is a screen viewed by the right eye lens R. The replacement time (O) from the right screen of the image display device 200 to the left screen of the image display device 200 to be viewed as the left eye lens L is opened.

Here, the replacement time (O) is a variable period that is determined in consideration of the response characteristics of the LCD used as the right / left eye lens of the 3D glasses 100 and the response characteristics of the LCD used in the image display device 200, The right eye lens R and the left eye lens L are closed only for the period of the replacement time (O).

Meanwhile, in the seventh step, in the seventh step, a plurality of groups a1, a2, a3, a4 which are not processed as wrong signals may be repeatedly received at a predetermined period K while forming a plurality of small groups. When the refresh rate of the constant period K repeatedly received exceeds a certain operating frequency (for example, 48 Hz, 50 Hz, 60 Hz, 72 Hz, and the like), it is recognized as an incorrect waveform, which means that each manufacturer of an image display device This is to avoid using an operating frequency other than the operating frequency (eg, 48 Hz, 50 Hz, 60 Hz, 72 Hz, etc.).

Although the technical idea of the IR synchronization signal reception control method of the present invention has been described with the accompanying drawings, this is by way of example and not by way of limitation of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

100; 3D Glasses
200; Video display device

Claims (8)

IR synchronization signal for wireless communication unit of 3D glasses to receive IR synchronization signal for opening / closing left eye lens and right eye lens from wireless communication unit of image display device and watching 3D image displayed on image display device according to the received IR synchronization signal In the reception control method,
The 3D glasses may include a first step of calculating a width and a time period of the received IR synchronization signal when any unsynchronized IR synchronization signal transmitted from an image display device is received;
A second step of determining whether the 3D glasses are periodically received for a predetermined reference number of times or more, wherein an IR synchronization signal having a width calculated from the first step and a period of time is set;
A third step of determining whether the 3D glasses have one or more IR synchronization signals received at one period of time when the IR synchronization signal is periodically received for a predetermined number of times or more according to the determination result of the second step;
The 3D eyeglasses sequentially control opening and closing of the left eye lens and the right eye lens through one IR synchronization signal when there is one IR synchronization signal periodically received at one cycle time according to the determination result of the third step. step;
A fifth step of the 3D glasses determining whether the plurality of IR synchronization signals are repeatedly received in one group when a plurality of IR synchronization signals are periodically received at one cycle time according to the determination result of the third step; And
The 3D glasses have a plurality of IRs present in one group that are repeatedly received when one group including a plurality of IR synchronization signals periodically received at one cycle time is repeatedly received according to the determination result of the fifth step. A sixth step of sequentially controlling opening and closing of the left eye lens and the right eye lens with a synchronization signal; IR synchronization signal reception control method characterized in that the progress. The method according to claim 1, wherein the third step determines that if a plurality of groups including a plurality of IR synchronization signals received at one time period are repeatedly received, half of the plurality of groups are repeatedly received. A seventh step of processing the wrong signal and recognizing the other half of the groups as a synchronization signal and sequentially controlling the opening and closing of the left eye lens and the right arm with the IR synchronization signal existing in the groups; IR synchronization signal reception control method characterized in that it further comprises. The method according to claim 1 or 2, wherein the reference frequency set in the second step is three times. The method of claim 1 or 2, wherein the fourth step,
A forty-first step of checking whether the period of the IR synchronization signal is a multiple of the refresh rate having a period of one period;
If the period of the IR synchronization signal is a multiple of the refresh rate having a period of time from the step 41, the right eye lens of the 3D glasses is opened and the left eye lens is closed during the half cycle time of the first refresh rate, and the 3D during the half cycle time of the remaining refresh rate. A 42nd step of controlling the refresh rate by opening the left eye lens of the glasses and closing the right eye lens; And
A forty-third step of repeating the control of the forty-first step and the forty-second step by one cycle time of the refresh rate; IR synchronization signal reception control method characterized in that it further comprises. The method of claim 1 or 2, wherein the sixth step is
A sixty-first step of checking whether a plurality of IR synchronization signals form a group for a predetermined time and repeatedly receive the same at a predetermined period, wherein the period of the repeatedly received group is a multiple of the refresh rate having a period of one period;
If the period of the group from step 61 is a multiple of the refresh rate having a period of one cycle, the right eye lens of the 3D glasses is opened and the left eye lens is closed during the half cycle time of the initial refresh rate, and during the half cycle time of the remaining refresh rate, A sixty-second step of controlling the refresh rate for opening the left eye lens and closing the right eye lens; And
A sixty-sixth step of repeating the control of steps 61 and 62 by one cycle time of the refresh rate; IR synchronization signal reception control method characterized in that it further comprises. The method of claim 2, wherein the seventh step,
A seventy-first step of recognizing the repeated-received groups as a synchronization signal when a plurality of groups not processed as wrong signals are repeatedly received at regular intervals while forming a plurality of small groups;
Among the groups recognized from step 71, the left eye lens and the right lens are closed at the same time through the IR sync signals between the first and second groups, the right eye lens is opened through the IR sync signals in the second group, and the IR between the third and the fourth group. Closing the right eye lens and the left eye lens simultaneously through the synchronization signals and controlling the left eye lens to be opened through the IR synchronization signal in the fourth group; And
A seventy-seventh step of repeating the control of the seventy-seventh and seventy-seventh steps; IR synchronization signal reception control method characterized in that it further comprises. The method according to claim 6,
In the 72th step, the period of closing the left eye lens and the right lens at the same time through the IR synchronization signals between the first and second groups is the image display to be viewed as the opening of the right eye lens on the left screen of the image display device, which is a screen viewed by the left eye lens. It is the time to replace the right screen of the device, and the period of closing the left and right lenses simultaneously through the IR synchronization signals between the third and fourth groups is the opening of the left eye lens from the right screen of the video display device, which is the screen seen by the right eye lens. IR synchronization signal reception control method, characterized in that the replacement time to the left screen of the video display device to see. 8. The method of claim 7, wherein, in the seventh step, when a plurality of groups not processed as wrong signals are repeatedly received at a predetermined period while forming a plurality of small groups, the refresh rate having a time period of being repeatedly received is a constant operating frequency. Recognizing it as an incorrect waveform if exceeded; IR synchronization signal reception control method characterized in that it further comprises.
KR1020120064509A 2012-06-15 2012-06-15 Reception control method of ir sync signal KR101344022B1 (en)

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