CN101944351B - Active display period determination device and method, resolution determination system and method - Google Patents

Active display period determination device and method, resolution determination system and method Download PDF

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CN101944351B
CN101944351B CN 200910158469 CN200910158469A CN101944351B CN 101944351 B CN101944351 B CN 101944351B CN 200910158469 CN200910158469 CN 200910158469 CN 200910158469 A CN200910158469 A CN 200910158469A CN 101944351 B CN101944351 B CN 101944351B
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signal
resolution
horizontal synchronizing
unit
display period
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CN 200910158469
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CN101944351A (en
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李辰邦
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宏碁股份有限公司
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Abstract

本发明公开一种有效显示周期判断装置及方法、分辨率判断系统及方法。 The present invention discloses an efficient apparatus and method for determining display period, the resolution determination system and method. 其中,分辨率判断系统包含:接收单元、屏蔽单元、判断单元、储存单元和处理单元。 Wherein the resolution determination system comprising: a receiving unit, a shielding unit, determination unit, a storage unit and a processing unit. 接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 The receiving unit receives an analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 屏蔽单元根据水平同步信号产生屏蔽信号。 Shielding mask signal generating unit based on the horizontal synchronizing signal. 判断单元根据屏蔽信号及复数个彩色信号来决定有效显示周期。 The mask signal determining unit and a plurality of color signals to determine the effective display period. 储存单元储存分辨率对应表,分辨率对应表储存有效显示周期与水平同步信号周期的比值以及对应的复数个参考分辨率。 The storage unit stores the correspondence table resolution, the resolution ratio correspondence table storing the effective display period and a horizontal synchronizing signal period and a corresponding plurality of reference resolution. 处理单元根据有效显示周期与水平同步信号周期的比值查询分辨率对应表,以决定分辨率。 The processing unit according to the ratio of the effective display period and a horizontal synchronizing signal period corresponds to the resolution table query, to determine the resolution.

Description

有效显示周期判断装置及方法、分辨率判断系统及方法 Effective display period determination apparatus and method, system and method for determining the resolution

技术领域 FIELD

[0001] 本发明涉及一种有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法,特别是涉及一种用以处理模拟视频信号的有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法。 [0001] The present invention relates to an effective display period determination means and determination method, determination system and determination method for the resolution, particularly to an effective display period of the analog video signal processing apparatus and determination method for determining whether to distinguish rate determination system and determination method.

背景技术 Background technique

[0002] VGA (Video Graphics Array)端子也可称为D_sub接口,上面共有15针,分成三排,每排五个,为显卡上应用最为广泛的接口类型。 [0002] VGA (Video Graphics Array) terminal may also be referred to D_sub interfaces, a total top pin 15, is divided into three rows, each row of five, the card is the most widely used interface type. 通过VGA接口就可以方便的与显示器连接,以显示图像。 It can be conveniently connected to the display through the VGA interface, to display an image.

[0003]目前大多数的计算机与外部显示设备之间都是通过模拟VGA接口连接,计算机内部以数字的方式生成显示图像信息,被显卡中的数字模拟转换器转换为RGB三原色信号、垂直同步信号和水平同步信号,信号通过电缆线传输至显示设备中。 [0003] Most computer with an external display is connected via an analog interface VGA, internal computer digitally generated display image information between devices, the graphics are converted in a digital-analog converter into RGB three primary color signals, a vertical synchronization signal and the horizontal synchronization signal, a signal transmission to the display device via the cable.

[0004] 对于非标准分辨率的模拟视频信号,通常通过集合红色信号(R)、绿色信号(G)以及蓝色信号(B),取最早产生信号的时间点和最晚产生信号的时间点以得到有效显示周期,再除以水平同步信号的周期而得到一个比值,进而根据此比值查表判断其分辨率。 [0004] For non-standard-resolution analog video signal, the signal typically by a set of red (R), green signal (G) and a blue signal (B), take the earliest time point generating signal is generated and the latest point in time of the signal to give the effective display period, divided by the horizontal synchronizing signal period to obtain a ratio, and further look-up table according to this ratio determines the resolution. 然而,对于较差的电缆线而言,RGB信号会因水平同步信号从高准位状态转换成低准位状态和低准位状态转换成高准位状态进而在RGB信号耦合出脉冲噪声(glitch noise),而得到错的有效显示周期。 However, for a poor cable, the RGB signals converted due to the horizontal synchronizing signal from the high level state to the low level state and a low level state to the high level state in the RGB signal in turn is coupled out impulse noise (of Glitch noise), while the effective display period wrong. 请参阅图1,其为现有技术中的RGB信号受到水平同步信号的脉冲噪声干扰的示意图。 Please refer to FIG. 1, a schematic diagram of impulse noise in the horizontal sync signal into RGB signals by which the prior art. 图中,可发现水平同步信号11从高准位状态降到低准位状态时,将在红色信号12、绿色信号13和蓝色信号14耦合脉冲噪声151 (glitch noise),同理,当水平同步信号11从低准位状态转换成高准位状态时,也在红色信号12、绿色信号13和蓝色信号14耦合脉冲噪声152,此举将产生错的有效显示周期(active display period) 16。 When the drawing, can be found in the horizontal synchronizing signal 11 falls below the low level state from the high level state, the signal 12 in the red, green and blue signals 14 signals 13 coupled pulse noise 151 (glitch noise), Similarly, when the level of when the sync signal 11 changes from the low level state to a hIGH state, a signal 12 is also red, green and blue signals coupled to signal 13 14 152 impulse noise, this error will produce an effective display period (active display period) 16 . 对于有效显示周期的判断会因为脉冲噪声干扰而导致分辨率判断错误,进而造成输出的图像格式错误。 For the effective display period is determined because the pulse noise caused by the error determination resolution, thus causing the error output image format. 因此取得正确的有效显示周期17,为本发明欲解决问题之一。 Therefore, to obtain the correct effective display period 17, one of the problems to be solved by the present invention.

发明内容 SUMMARY

[0005] 有鉴于上述现有技术的问题,本发明的目的就是在于提供一种有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法,以解决脉冲噪声干扰而导致分辨率判断错误等问题。 [0005] In view of the problems of the prior art, an object of the present invention is to provide an effective display period determination means and determination method, system and method for determining the resolution is determined, in order to solve the impulse noise caused by the resolution determination errors and other issues.

[0006] 根据本发明的一个目的,提出一种有效显示周期判断装置,其包含:接收单元、屏蔽单元和判断单元。 [0006] According to one object of the present invention, there is proposed an effective display period judging means, comprising: a receiving unit, a shielding unit and a determination unit. 接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 The receiving unit receives an analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 屏蔽单元连接接收单元,并根据水平同步信号产生屏蔽信号。 Shielding unit connected to the receiving unit, and generates a mask signal based on the horizontal synchronizing signal. 判断单元连接接收单元和屏蔽单元,且根据屏蔽信号及复数个彩色信号来决定有效显示周期。 Judging means connected to the receiving unit and the shielding unit, and to determine the effective display period in accordance with the mask signal and a plurality of color signals.

[0007] 其中,复数个彩色信号包含红色信号、蓝色信号和绿色信号。 [0007] wherein the plurality of color signals comprising a red signal, blue signal, and green signal.

[0008] 其中,判断单元集合复数个彩色信号,再根据屏蔽信号排除屏蔽区间内的信号,以决定有效显示周期。 [0008] wherein determining a set of a plurality of color signal unit, then the negative signal according to the mask signal masking interval to determine the effective display period. [0009] 其中,屏蔽区间涵盖水平同步信号的前沿(front porch)部分、低准位状态以及后沿(back porch)部分。 [0009] wherein the leading edge of the shield (front porch) covers a horizontal synchronizing signal interval portion, the low level state and a trailing edge (back porch) portion. 在前沿部分,水平同步信号从高准位状态转换成低准位状态,在后沿部分,水平同步信号状态从低准位转换成高准位状态。 In the leading portion, the horizontal synchronization signal transitions from the high level state to a low level state, the trailing edge portion, the horizontal synchronizing signal state from the low level to the high level state.

[0010] 根据本发明的另一目的,提出一种有效显示周期判断方法,包含下列步骤:首先,通过接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 [0010] According to another object of the present invention, a method of determining an effective display period, comprising the following steps: First, the receiving unit receives the analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 接着,利用屏蔽单元根据水平同步信号产生屏蔽信号。 Next, the shield unit generates a mask signal based on the horizontal synchronizing signal. 最后,由判断单元根据屏蔽信号及复数个彩色信号来决定有效显示周期。 Finally, the determination means determines the effective display period in accordance with the mask signal and a plurality of color signals.

[0011] 其中,复数个彩色信号包含红色信号、蓝色信号和绿色信号。 [0011] wherein the plurality of color signals comprising a red signal, blue signal, and green signal.

[0012] 其中,通过判断单元集合复数个彩色信号,再根据屏蔽信号排除屏蔽区间内的信号,以决定有效显示周期。 [0012] wherein the determining unit through a set of a plurality of color signals, and then in a negative signal in accordance with the mask signal masking interval to determine the effective display period.

[0013] 其中,屏蔽区间涵盖水平同步信号的前沿(front porch)部分、低准位状态以及后沿(back porch)部分。 [0013] wherein the leading edge of the shield (front porch) covers a horizontal synchronizing signal interval portion, the low level state and a trailing edge (back porch) portion. 在前沿部分,水平同步信号从高准位状态转换成低准位状态,在后沿部分,该水平同步信号状态从低准位转换成高准位状态。 In the leading portion, the horizontal synchronization signal transitions from the high level state to a low level state, the trailing edge portion of the horizontal synchronizing signal state from the low level to the high level state.

[0014] 根据本发明的再一目的,提出一种分辨率判断系统,其包含:接收单元、屏蔽单元、判断单元、储存单元和处理单元。 [0014] According to a further object of the present invention, to provide a resolution determination system, comprising: a receiving unit, a shielding unit, determination unit, a storage unit and a processing unit. 接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 The receiving unit receives an analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 屏蔽单元连接接收单元,屏蔽单元根据水平同步信号产生屏蔽信号。 Means coupled to receive shielding unit shielding mask signal generating unit based on the horizontal synchronizing signal. 判断单元连接接收单元和屏蔽单元,且根据屏蔽信号及复数个彩色信号来决定有效显示周期。 Judging means connected to the receiving unit and the shielding unit, and to determine the effective display period in accordance with the mask signal and a plurality of color signals. 储存单元储存分辨率对应表,分辨率对应表储存有效显示周期与水平同步信号周期的比值和对应的复数个参考分辨率。 The storage unit stores the correspondence table resolution, the resolution ratio correspondence table storing the effective display period and the horizontal synchronizing signal period and a corresponding plurality of reference resolution. 处理单元连接储存单元和判断单元,处理单元根据有效显示周期与水平同步信号周期的比值查询分辨率对应表,以决定分辨率。 Storage means connected to the processing unit and the judgment unit, the processing unit queries the table corresponding to the resolution according to the ratio of the effective display period and a horizontal synchronizing signal period, to determine the resolution.

[0015] 其中,复数个彩色信号包含红色信号、蓝色信号和绿色信号。 [0015] wherein the plurality of color signals comprising a red signal, blue signal, and green signal.

[0016] 其中,判断单元集合复数个彩色信号,再根据屏蔽信号排除屏蔽区间内的信号,以决定有效显示周期。 [0016] wherein determining a set of a plurality of color signal unit, then the negative signal according to the mask signal masking interval to determine the effective display period.

[0017] 其中,屏蔽区间涵盖水平同步信号的前沿(front porch)部分、低准位状态以及后沿(back porch)部分。 [0017] wherein the leading edge of the shield (front porch) covers a horizontal synchronizing signal interval portion, the low level state and a trailing edge (back porch) portion. 在前沿部分,水平同步信号从高准位状态转换成低准位状态,在后沿部分,该水平同步信号状态从低准位转换成高准位状态。 In the leading portion, the horizontal synchronization signal transitions from the high level state to a low level state, the trailing edge portion of the horizontal synchronizing signal state from the low level to the high level state.

[0018] 根据本发明之又一目的,提出一种分辨率判断方法,其包含下列步骤:首先,由接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 [0018] According to a further object of the present invention, to provide a method for determining the resolution, comprising the following steps: First, by the receiving unit receives the analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 接着,利用屏蔽单元根据水平同步信号产生屏蔽信号。 Next, the shield unit generates a mask signal based on the horizontal synchronizing signal. 接着,由判断单元根据屏蔽信号及复数个彩色信号来决定有效显示周期。 Next, the determination unit determines the effective display period in accordance with the mask signal and a plurality of color signals. 接着,通过储存单元储存分辨率对应表,分辨率对应表储存有效显示周期与水平同步信号周期的比值和对应的复数个参考分辨率。 Next, the resolution storage unit stores the correspondence table, the table storing the effective display resolution corresponds to the period ratio of the horizontal synchronizing signal period and a corresponding plurality of reference resolution. 最后,利用处理单元根据有效显示周期与水平同步信号周期的比值查询分辨率对应表,以决定分辨率。 Finally, the processing unit queries the table corresponding to the resolution according to the ratio of the effective display period and a horizontal synchronizing signal period, to determine the resolution.

[0019] 其中,复数个彩色信号包含红色信号、蓝色信号和绿色信号。 [0019] wherein the plurality of color signals comprising a red signal, blue signal, and green signal.

[0020] 其中,通过判断单元集合复数个彩色信号,再根据屏蔽信号排除屏蔽区间内的信号,以决定有效显示周期。 [0020] wherein the determining unit through a set of a plurality of color signals, and then in a negative signal in accordance with the mask signal masking interval to determine the effective display period.

[0021] 其中,屏蔽区间涵盖水平同步信号的前沿(front porch)部分、低准位状态以及后沿(back porch)部分。 [0021] wherein the leading edge of the shield (front porch) covers a horizontal synchronizing signal interval portion, the low level state and a trailing edge (back porch) portion. 在前沿部分,水平同步信号从高准位状态转换成低准位状态,在后沿部分,该水平同步信号状态从低准位转换成高准位状态。 In the leading portion, the horizontal synchronization signal transitions from the high level state to a low level state, the trailing edge portion of the horizontal synchronizing signal state from the low level to the high level state.

[0022] 承上所述,根据本发明的有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法,其可具有一或多个下述优点: [0022] bearing on said determining means and method for determining the effective display period in accordance with the present invention, the resolution judgment system and method for determining which may have one or more of the following advantages:

[0023] (1)此有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法可解决脉冲噪声(glitch noise)干扰而导致的分辨率判断错误等问题。 Analyzing resolution errors, etc. [0023] (1) The effective display period determination means and determination method, determination system and determination method for the resolution resolves impulse noise (glitch noise) cause interference problems.

[0024] (2)此有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法可根据屏蔽信号排除屏蔽区间(masking range)内的信号,来决定有效显示周期。 [0024] (2) The effective display period determination means and determination method, system and method for determining the resolution determination signal may be excluded in a shielded section (masking range) in accordance with the mask signal to determine the effective display period.

[0025] (3)此有效显示周期判断装置及其判断方法、分辨率判断系统及其判断方法可根据有效显示周期与水平同步信号周期的比值取得对应的分辨率。 [0025] (3) The effective display period determination means and determination method, system and method for determining the resolution is determined corresponding to the resolution can be obtained in accordance with the ratio of the effective display period and a horizontal synchronizing signal period.

附图说明 BRIEF DESCRIPTION

[0026] 图1是现有技术中的RGB信号受到水平同步信号的脉冲噪声干扰的示意图; [0026] FIG. 1 is a schematic view of the prior art RGB signal by impulse noise horizontal synchronizing signal;

[0027] 图2是本发明的有效显示周期判断装置的示意图; [0027] FIG. 2 is a valid display period of the present invention is a schematic diagram of determining means;

[0028] 图3是本发明有效显示周期判断装置的实施例示意图; [0028] FIG. 3 is a schematic diagram of the present embodiment of the invention the effective display period determination means;

[0029] 图4是本发明有效显示周期判断方法的流程图; [0029] FIG. 4 is a flowchart illustrating determination period of the effective display method of the invention;

[0030] 图5是本发明的分辨率判断系统的示意图;以及 [0030] FIG. 5 is a schematic diagram of the system of the present invention, the resolution is determined; and

[0031] 图6是分辨率判断方法的流程图。 [0031] FIG. 6 is a flowchart of a method of determining the resolution.

[0032]【主要组件符号说明】 [0032] The main component symbol DESCRIPTION

[0033] 11、2111、34、5111:水平同步信号; [0033] 11,2111,34,5111: a horizontal synchronization signal;

[0034] 12、31:红色信号; [0034] 12, 31: red signal;

[0035] 13、132:绿色信号; [0035] 13,132: green signal;

[0036] 14、33:蓝色信号; [0036] 14, 33: blue signal;

[0037] 151、152:脉冲噪声; [0037] 151, 152: impulse noise;

[0038] 16、17、35:有效显示周期; [0038] 16,17,35: effective display period;

[0039] 2:有效显示周期装置; [0039] 2: means effective display period;

[0040] 21、51:接收单元; [0040] 21, 51: receiving unit;

[0041] 211、511:模拟视频信号; [0041] 211, 511: analog video signal;

[0042] 2112、5112:复数个彩色信号; [0042] 2112,5112: a plurality of color signals;

[0043] 21、52:屏蔽单元; [0043] 21 and 52: shielding unit;

[0044] 221、521:屏蔽信号; [0044] 221,521: mask signal;

[0045] 23、53:判断单元; [0045] 23, 53: determination unit;

[0046] 3411:前沿部分; [0046] 3411: the leading edge portion;

[0047] 2412:低准位状态; [0047] 2412: the low level state;

[0048] 3413:后沿部分; [0048] 3413: trailing portion;

[0049] 5:分辨率判断系统; [0049] 5: Analyzing resolution system;

[0050] 531:有效显示周期; [0050] 531: The effective display period;

[0051] 54:储存单元; [0051] 54: storage unit;

[0052] 541:分辨率对应表; [0052] 541: corresponding to the resolution table;

[0053] S1-S3、S11_S51:步骤;以及 [0053] S1-S3, S11_S51: step; and

[0054] 55:处理单元。 [0054] 55: processing unit. 具体实施方式 Detailed ways

[0055] 请参阅图2,其为本发明的有效显示周期判断装置的示意图。 [0055] Please refer to FIG. 2, a schematic view of the period of the effective display device of the present invention is determined. 图中,有效显示周期判断装置2包含接收单元21、屏蔽单元22和判断单元23。 FIG, the effective display period judging means 2 comprises a receiving unit 21, a shielding unit 22 and determination unit 23. 接收单元21可接收模拟视频信号211。 The receiving unit 21 may receive an analog video signal 211. 此模拟视频信号211包含水平同步信号2111和复数个彩色信号2112。 This analog video signal includes a horizontal synchronizing signal 211 2111 2112 and a plurality of color signals. 此复数个彩色信号2112可包含红色信号、绿色信号和蓝色信号。 This plurality of color signals 2112 may include a red signal, a green signal and a blue signal. 屏蔽单元22连接接收单元21,并根据水平同步信号2111以产生屏蔽信号221。 Shielding unit 22 is connected a receiving unit 21, and the horizontal synchronizing signal 2111 to generate a mask signal 221. 判断单元23连接接收单元21和屏蔽单元22,判断单元23集合复数个彩色信号2112,并根据屏蔽单元22所产生的屏蔽信号221排除屏蔽区间内的信号,以得到有效的显示周期。 Analyzing unit 23 is connected to the receiving unit 21 and the shield unit 22, unit 23 determines a set of a plurality of color signals 2112, and to exclude the signal within the mask range in accordance with the mask signal 22 generated by the shielding unit 221 to obtain an effective display period.

[0056] 请参阅图3,其为本发明有效显示周期判断装置的实施例示意图。 [0056] Please refer to FIG. 3, a schematic diagram of an embodiment of the apparatus which determines the cycle of the present invention effective display. 并同时参阅图2,VGA端子具有15个针脚,因此接收单元21可通过VGA端子接收模拟视频信号211,此模拟视频信号211可包含红色信号31、绿色信号32、蓝色信号33、水平同步信号34和垂直同步信号。 And also refer to FIG. 2, VGA having terminal pins 15, the receiver unit 21 may be 211, this analog video signal by a VGA 211 may include a terminal for receiving an analog video signal 31 red signal, green signal 32 blue signal 33, a horizontal synchronization signal 34 and vertical synchronizing signals. 在水平同步信号34中,当高准位状态转换成低准位状态和低准位状态转换成高准位状态时,可能在红色信号31、绿色信号32以及蓝色信号33耦合脉冲噪声,进而产生数据读取错误等现象。 The horizontal sync signal 34, when the high level state to the low-level state and a low level state to the high level state, the signal 31 may be red, green and blue signals 32 coupled pulse noise signal 33, and further generate data read error and so on. 因此,屏蔽单元22根据水平同步信号34产生屏蔽信号341,屏蔽信号341的屏蔽区间涵盖水平同步信号的前沿(front porch)部分3411、低准位状态3412以及后沿(back porch)部分3413。 Thus, the shielding unit 22 generates a horizontal synchronizing signal 34 in accordance with the mask signal 341, the leading edge shield (front porch) signal shielding portion 3411 covering sections 341 of the horizontal synchronizing signal, a low level state 3412 and a trailing edge (back porch) section 3413. 前沿部分3411表示水平同步信号从高准位状态转换成低准位状态,后沿部分3413表示水平同步信号从低准位状态转换成高准位状态。 The leading edge portion 3411 represents a horizontal synchronizing signal from a HIGH state to a LOW state, the trailing edge portion 3413 represents a horizontal synchronization signal transitions from a low state to a high level state level.

[0057] 在前沿部分3411时,判断单元23根据屏蔽信号341开始等待直至后沿部分3413结束,以去除脉冲噪声而造成的数据判断错误,在等待结束后,判断单元23集合红色信号31、绿色信号32和蓝色信号22来得到有效显示周期35。 Data Analyzing error termination caused by the [0057] At the leading edge portion 3411, the judgment unit 23 starts to wait until according to the mask signal 341 along part of 3413, in order to remove impulse noise, after waiting for the end determining unit 23 set red signal 31, green 32 and the signal 22 blue signal 35 to obtain the effective display period. 即,也是如图1所示根据最早产生信号的时间点和最晚产生信号的时间点来得到有效显示周期35。 That is, the time point is shown in FIG. The first signal is generated and the latest point in time to generate a signal effective display period 351.

[0058] 判断单元23也可根据屏蔽信号341分别于红色信号、蓝色信号和绿色信号排除屏蔽区间内的噪声干扰(glitch noise),之后判断单元23集合排除屏蔽区间后的红色信号、蓝色信号和绿色信号,根据最早产生信号的时间点和最晚产生信号的时间点来得到有效显示周期35。 [0058] The determination unit 23 may be respectively the red signal, green signal, and blue signal noise exclusion (glitch noise) within the shielded section in accordance with the mask signal 341, after the determination unit 23 is a red signal set negative mask section, blue signal and the green signal, according to the point in time of the earliest and latest generated signal to generate a signal 35 to obtain the effective display period.

[0059] 此屏蔽信号341的屏蔽区间为由低准位状态转换成高准位状态,再由高准位状态转换成低准位状态所构成的区间,但不限于此,此屏蔽信号的屏蔽区间也可为由高准位状态转换成低准位状态,再由低准位状态转换成高准位状态所构成的区间。 [0059] The shield section 341 of this mask signal by the low level state to the HIGH state, and then converted by the high level state to the low level state interval composed of, but not limited thereto, this mask masking signal interval may also be a high level state to the low level state, and then converted from low level state to high level state interval thereof.

[0060] 屏蔽信号341的屏蔽区间还可包含水平同步信号从高准位状态转换成低准位状态的前一时间间隔和水平同步信号从低准位状态转换成高准位状态的后一时间间隔,因此本发明的屏蔽单元22可通过利用水平同步信号34的所述前一时间间隔、前沿部分、低准位状态、后沿部分和所述后一时间间隔来产生屏蔽信号341的屏蔽区间。 [0060] Block 341 may further mask signal section includes a horizontal synchronizing signal from a HIGH state to a LOW state and a time interval preceding the horizontal sync signal from the low level state to high level state after a time interval, thus shielding unit 22 of the present invention can be obtained by using a horizontal synchronizing signal of said preceding time interval 34, the leading edge portion, a low level state, and the rear trailing portion of a time interval to generate a mask signal masking section 341 .

[0061] 请参阅图4,其为本发明有效显示周期判断方法的流程图。 [0061] Please refer to FIG. 4, a flowchart of a method which determines the cycle of the present invention is effective display. 在步骤SI,通过接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号。 In the SI step, through the receiving unit receives an analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals. 在步骤S2,利用屏蔽单元根据水平同步信号产生屏蔽信号。 In step S2, the mask signal is generated based on the horizontal synchronizing signal with the shielding means. 在步骤S3,判断单元根据屏蔽信号及复数个彩色信号来决定有效显示周期。 In step S3, the determination unit according to the mask signal and a plurality of color signals to determine the effective display period.

[0062] 请参阅图5,其为本发明的分辨率判断系统的示意图。 [0062] Please refer to FIG. 5, a schematic diagram of the system which determines the resolution of the present invention. 图中,分辨率判断系统5包含接收单元51、屏蔽单元52、判断单元53、储存单元54和处理单元55。 FIG resolution determination system 5 comprises a receiving unit 51, the shielding unit 52, determination unit 53, a storage unit 54 and processing unit 55. 其中,接收单元51、屏蔽单元52和判断单元53的连接关系可参阅图2说明,在此不再赘述。 Wherein, the receiving unit 51, the shielding unit 52 and the connection relationship determination unit 53 may refer to the description of FIG. 2, not described herein again. 储存单元54储存分辨率对应表541,其储存的分辨率对应表541可包含有效显示周期531与水平同步信号5111周期的比值,根据其比值关系可对应得到复数个分辨率关系。 Resolution storage unit 54 stores a correspondence table 541, which stores the correspondence table 541 may include the resolution ratio of an effective display period signal 531 and the horizontal synchronizing period 5111, may correspond to a plurality of resolution obtained according to the relationship between the ratio relationship.

[0063] 处理单元55可通过判断单元53所决定的有效显示周期531与水平同步信号5111周期的比值,通过查询分辨率对应表541来获得对应的分辨率。 The ratio of the effective display period 531 [0063] The processing unit 55 may be determined by the determination unit 53 and the horizontal synchronizing signal period of 5111, to obtain a resolution corresponding to the resolution by querying the mapping table 541. 其中,比值可通过下列方程 Wherein the ratio by the following equation

式⑴决定: Type ⑴ decision:

[0064] [0064]

Figure CN101944351BD00081

[0065] 请参阅表1,其为有效显示周期与水平同步周期的比值关系与其分辨率的对应表。 [0065] See Table 1, which is a relationship between the ratio of an effective display period and the horizontal synchronization period and its resolution correspondence table. 当垂直更新频率为60Hz时,根据有效显示周期与水平同步周期的比值可以查表得出对应的分辨率。 When the vertical refresh frequency of 60Hz, the ratio of the effective display period in accordance with the horizontal synchronization period can be derived look-up table corresponding to the resolution. 当求出的比值较近似于0.7510729时,可对应查表得出其分辨率为1400X1050。 When the determined ratio when compared 0.7510729 similar to, the corresponding look-up table may be obtained with a resolution of 1400X1050. 当求出的比值较近似于0.75时,可对应查表得出其分辨率为1680X1050。 When the determined ratio than approximately 0.75, the corresponding look-up table can be obtained with a resolution of 1680X1050. 当求出的比值较近似于0.761904时,可对应查表得出其分辨率为1024X768。 When compared with the ratio determined when approximately 0.761904, derived look-up table may correspond to a resolution of 1024X768. 当求出的比值较近似于 When the determined ratio than approximately

0.76923时,可对应查表得出其分辨率为1280X768。 0.76923, the obtained look-up table may correspond to a resolution of 1280X768. 根据比值的数据不同,其对应的分辨率亦不同,因此处理单元可根据分辨率对应表得出其分辨率。 Depending on the ratio data, which is also different corresponding to the resolution, the processing unit can be derived according to the resolution corresponding to the resolution table. 此外,处理单元可通过分辨率对应表判断视频格式为正常模式(normal mode)或宽模式(widemode)。 Further, the processing unit may be determined by the resolution of the video format correspondence table to the normal mode (normal mode) or the wide mode (widemode).

[0066]表 I [0066] TABLE I

[0067] [0067]

Figure CN101944351BD00082

[0068] 值得注意的是,当垂直分辨率可通过系统运算而精确得知时,则可限制表I的选项。 [0068] It is noted that, when the vertical resolution can be accurately learned by the system operator, can limit options of Table I. 例如计算得知两个垂直同步信号之间有1050个水平同步信号,则可得知垂直分辨率为1050。 It has calculated that, for example, 1050 horizontal synchronizing signal between the two vertical synchronization signals, a vertical resolution of 1050 can be learned. 因此在查表时,可将表I的选项限制在1400X1050以及1680 X 1050这两个分辨率。 Therefore, when the look-up table, the options may be limited to Table I of 1400X1050 and 1680 X 1050 resolution of the two. 当求出的比值较近似于0.7510729时,可对应查表得出其分辨率为1400X1050。 When the determined ratio when compared 0.7510729 similar to, the corresponding look-up table may be obtained with a resolution of 1400X1050. 当求出的比值较近似于0.75时,可对应查表得出其分辨率为1680X1050。 When the determined ratio than approximately 0.75, the corresponding look-up table can be obtained with a resolution of 1680X1050.

[0069] 请参阅图6,其为分辨率判断方法的流程图。 [0069] Referring to FIG 6, a flowchart of a method for the resolution of the determination. 分辨率判断方法包含下列步骤:步骤S11,接收单元接收模拟视频信号,模拟视频信号包含水平同步信号和复数个彩色信号;步骤S21,屏蔽单元根据水平同步信号产生屏蔽信号;步骤S31,判断单元根据屏蔽信号及复数个彩色信号来决定有效显示周期;步骤S41,通过储存单元储存分辨率对应表,分辨率对应表储存有效显示周期与水平同步信号周期的比值和对应的复数个参考分辨率。 Resolution determination method comprises the following steps: step S11, the receiving unit receives the analog video signal, an analog video signal containing a horizontal synchronizing signal and a plurality of color signals; step S21, the masking unit generates the mask signal based on the horizontal synchronizing signal; step S31, the determination unit according to the mask signal and a plurality of color signals to determine the effective display period; step S41, the storage unit stores the resolution by the correspondence table, the table storing the effective display resolution corresponds to the ratio of the horizontal synchronizing signal period and a period corresponding to a plurality of reference resolution. 步骤S51,处理单元根据有效显示周期与水平同步信号周期的比值查询分辨率对应表,以决定分辨率。 Step S51, the processing unit in accordance with the ratio of the effective display period and a horizontal synchronizing signal period corresponds to the resolution table query, to determine the resolution. [0070] 以上所述仅为实例性的,而非为限制性的。 [0070] The above are only exemplary and not limiting. 任何未脱离本发明的精神和范围,而对其进行的等效修改或变更,均应包含在权利要求的范围内。 Any without departing from the spirit and scope of the invention, and its equivalent modifications or variations could be made within the scope of the claims.

Claims (7)

1.一种有效显示周期判断装置,其特征在于,包含: 接收单元,接收模拟视频信号,所述模拟视频信号包含水平同步信号和复数个彩色信号; 屏蔽单元,连接该接收单元,所述屏蔽单元根据该水平同步信号产生屏蔽信号;以及判断单元,连接所述接收单元和所述屏蔽单元,且根据所述屏蔽信号及所述复数个彩色信号来决定有效显示周期, 其中: 所述判断单元集合所述复数个彩色信号,再根据所述屏蔽信号排除屏蔽区间,以决定所述有效显示周期, 所述屏蔽区间涵盖所述水平同步信号的前沿部分、低准位状态以及后沿部分, 在所述前沿部分,所述水平同步信号从高准位状态转换成低准位状态;在所述后沿部分,所述水平同步信号状态从低准位转换成高准位状态。 An effective display period determining means, wherein, comprising: a receiving unit that receives an analog video signal, the analog video signal includes a horizontal synchronizing signal and a plurality of color signals; shielding unit, connected to the receiving means, the shield the unit of the horizontal synchronizing signal generating mask signal; and a determination unit connected to the receiving unit and the shielding unit, and the effective display period is determined according to the mask signal and the plurality of color signals, wherein: said determining means set of the plurality of color signals, again according to the negative mask section mask signal, to determine the effective display period, the shielding section covers the leading edge portion of the horizontal synchronizing signal, a low level state and a trailing edge section, the leading edge portion of the horizontal synchronizing signal from a hIGH state to a lOW state; the trailing portion of the horizontal synchronizing signal state from the low level to the high level state.
2.如权利要求1所述的有效显示周期判断装置,其中,所述复数个彩色信号包含红色信号、蓝色信号和绿色信号。 2. The period of the effective display determination device of claim 1, wherein the plurality of color signals comprising a red signal, blue signal, and green signal.
3.一种有效显示周期判断方法,其特征在于,包含下列步骤: 通过接收单元接收模拟视频信号,所述模拟视频信号包含水平同步信号和复数个彩色信号; 利用屏蔽单元根据所述水平同步信号产生屏蔽信号;以及由判断单元根据所述屏蔽信号及所述复数个彩色信号,来决定有效显示周期, 其中: 通过所述判断单元集合所述复数个彩色信号,再根据所述屏蔽信号排除屏蔽区间内的信号,以决定所述有效显示周期, 所述屏蔽区间涵盖所述水平同步信号的前沿部分、低准位状态以及后沿部分, 在所述前沿部分,所述水平同步信号从高准位状态转换成低准位状态;在所述后沿部分,所述水平同步信号状态从低准位转换成高准位状态。 A method for determining the effective display period, characterized by comprising the steps of: receiving an analog video signal by the unit receiving the analog video signal containing a horizontal synchronizing signal and a plurality of color signals; using shielding unit according to the horizontal synchronization signal generating a mask signal; and a signal by the judgment unit and the plurality of color signals, determined according to the effective display period of the shield, wherein: said determination means set the plurality of color signals, then a signal according to the negative mask shield signal in the interval to determine the effective display period, the shielding section covers the leading edge portion of the horizontal synchronizing signal, a low level state and a trailing edge portion, said leading edge portion, the horizontal synchronizing signal from Micro Motion bit state to the lOW state; the trailing portion of the horizontal synchronizing signal state from the low level to the high level state.
4.如权利要求3所述的有效显示周期判断方法,其中,所述复数个彩色信号包含红色信号、蓝色信号和绿色信号。 4. The effective display period determination method according to claim 3, wherein the plurality of color signals comprising a red signal, blue signal, and green signal.
5.一种分辨率判断系统,其特征在于,包含: 接收单元,接收模拟视频信号,所述模拟视频信号包含水平同步信号和复数个彩色信号; 屏蔽单元,连接所述接收单元,所述屏蔽单元根据所述水平同步信号产生屏蔽信号;以及判断单元,连接所述接收单元和所述屏蔽单元,且根据所述屏蔽信号及所述复数个彩色信号来决定有效显示周期; 储存单元,储存分辨率对应表,所述分辨率对应表储存所述有效显示周期与所述水平同步信号周期的比值以及对应的复数个参考分辨率;以及处理单元,连接所述储存单元和所述判断单元,所述处理单元根据所述有效显示周期与所述水平同步信号周期的比值查询所述分辨率对应表,以决定分辨率, 其中:所述判断单元集合所述复数个彩色信号,再根据所述屏蔽信号排除屏蔽区间内的信号,以决定所述有效显示周期, 所述 A resolution determination system, characterized by comprising: a receiving unit that receives an analog video signal, the analog video signal includes a horizontal synchronizing signal and a plurality of color signals; shielding unit, connected to said receiving means, said shield the unit generates a mask signal to the horizontal synchronizing signal; and a determination unit connected to the receiving unit and the shielding unit, and the effective display period is determined according to the mask signal and the plurality of color signals; storage unit storing resolution rate correspondence table, said correspondence table storing the effective resolution of the display period and the ratio of the horizontal synchronizing signal period and a corresponding plurality of reference resolution; and a processing unit connected to said storage means and said determination means, the said processing unit in accordance with the ratio of the effective display period and the horizontal synchronizing signal period of the polling table corresponding to the resolution, to determine the resolution, wherein: the judgment unit set of the plurality of color signals, and then according to the shield signal negative signal in the masking section in order to determine the effective display period, the 屏蔽区间涵盖所述水平同步信号的前沿部分、低准位状态以及后沿部分, 在所述前沿部分,所述水平同步信号从高准位状态转换成低准位状态;在所述后沿部分,所述水平同步信号状态从低准位转换成高准位状态。 The shielding section covers the leading edge portion of the horizontal synchronizing signal, a low level state and a trailing edge portion, said leading edge portion, the horizontal synchronizing signal from a HIGH state to a LOW state; the trailing portion the horizontal synchronizing signal state from the low level to the high level state.
6.如权利要求5所述的分辨率判断系统,其中,所述复数个彩色信号包含红色信号、蓝色信号和绿色信号。 Analyzing system according to the resolution as claimed in claim 6, wherein the plurality of color signals comprising a red signal, blue signal, and green signal.
7.一种分辨率判断方法,其特征在于,包含下列步骤: 由接收单元接收模拟视频信号,所述模拟视频信号包含水平同步信号和复数个彩色信号; 利用屏蔽单元根据所述水平同步信号产生屏蔽信号; 由判断单元根据所述屏蔽信号及所述复数个彩色信号,来决定有效显示周期; 通过储存单元储存分辨率对应表,所述分辨率对应表储存所述有效显示周期与所述水平同步信号周期的比值以及对应的复数个参考分辨率;以及利用处理单元根据所述有效显示周期与所述水平同步信号周期的比值查询所述分辨率对应表,以决定分辨率, 其中: 通过所述判断单元集合所述复数个彩色信号,再根据所述屏蔽信号排除屏蔽区间内的信号,以决定所述有效显示周期, 所述屏蔽区间涵盖所述水平同步信号的前沿部分、低准位状态以及后沿部分, 在所述前沿部分,所述水平同 A resolution determination method characterized by comprising the steps of: receiving an analog video signal by the receiving unit, the analog video signal includes a horizontal synchronizing signal and a plurality of color signals; produced in accordance with the horizontal synchronizing signal with a shield means mask signal; the determining means according to the mask signal and the plurality of color signals, to determine the effective display period; resolution by the storage unit stores a correspondence table, said correspondence table storing the effective resolution of the display period and the horizontal the ratio of the synchronization signal period and a corresponding plurality of reference resolution; and using a processing unit according to the ratio of the effective display period and the horizontal synchronizing signal period of the polling table corresponding to the resolution, to determine the resolution, wherein: by the said determining means set the plurality of color signals, and then the negative mask signal according to the mask signal interval to determine the effective display period, the shielding section covers the leading portion of the horizontal synchronizing signal, a low level state and a trailing edge portion, said leading portion, with the horizontal 步信号从高准位状态转换成低准位状态;在所述后沿部分,所述水平同步信号状态从低准位转换成高准位状态。 Step level signal from the high state to the low level state; the trailing portion of the horizontal synchronizing signal state from the low level to the high level state.
CN 200910158469 2009-07-08 2009-07-08 Active display period determination device and method, resolution determination system and method CN101944351B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1322344A (en) 1998-10-07 2001-11-14 微软公司 Methods and apparatus for displaying images such as text
CN101017657A (en) 2006-02-06 2007-08-15 株式会社东芝 The image display apparatus and image display method
KR20090073456A (en) 2007-12-31 2009-07-03 엘지디스플레이 주식회사 Apparatus of flat panel display device and driving method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1322344A (en) 1998-10-07 2001-11-14 微软公司 Methods and apparatus for displaying images such as text
CN101017657A (en) 2006-02-06 2007-08-15 株式会社东芝 The image display apparatus and image display method
KR20090073456A (en) 2007-12-31 2009-07-03 엘지디스플레이 주식회사 Apparatus of flat panel display device and driving method thereof

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