• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a method of implementing abandonment mode of a video camera that adds abandon mode so that a subject can be photographed in a misty state at any time. The present invention checks the key input in the microcomputer to determine whether the fade 1 mode or the fade 2 mode is selected in the abandon mode. In the fade 1 mode, if the record key is pressed, the fade 1 mode is implemented and the recording is in the abandon mode. If the record key is pressed again, the fade 1 mode is implemented and the recording is stopped. In the fade 2 mode, when the record key is pressed, the fade 2 mode is implemented and the recording is in the abandon mode. When the record key is pressed again, the fade 2 mode is implemented, and the recording is stopped. In this case, the abandon mode selects an address value corresponding to a setup level, a gamma value, a final luminance signal output level, an automatic gain control maximum value, an average target value for proper exposure, a final color signal output level, a contour gain control value, and a noise slice level value. It will be set in turn.
    公开号:KR19980053650A
    申请号:KR1019960072778
    申请日:1996-12-27
    公开日:1998-09-25
    发明作者:권수혁
    申请人:김광호；삼성전자 주식회사；
    IPC主号:
    专利说明:

    How to Implement Foggy Mode in Video Cameras
    The present invention relates to an extension of a video camera, and more particularly, to a method of implementing abandon mode of a video camera in which a subject can be photographed in a misty state at any time by adding a fog mode.
    In general, video signal recording and reproducing apparatuses, such as a video camera, a camcorder, a VTR, and the like, are equipped with various functions. Done. The most common functions for home video cameras include AF (Auto Focus), AWB (Auto White Balance), and AE (Auto Exposure). The AF function adjusts the focus automatically by the camera, and the AWB function adjusts the color to reproduce the correct color. The AE function refers to the auto iris function of the iris. The iris is automatically adjusted to narrow the lens using the iris to obtain proper exposure.
    These functions are essential for shooting subjects. In addition to these functions, the AD (Auto Date) function, Fade function, Interval shooting, Frame shooting, Digital shooting, Self-timer Timer) function. The AD function is to record the date and time at the time of recording in the image. The fade function is a fade in function where the image gradually appears from the black screen, and a fade out function where the image gradually disappears. Are distinguished. Interval shooting and frame shooting are techniques that shoot little by little or a few frames at regular intervals. Digital shooting is applied to low light or special photography (Wipe, Still, Strobe, Art, etc.) by accumulating video signals. Self-timer function is a function that shoots after a certain time elapses after pressing a button, so that the photographer can also shoot together.
    Using these features, you can take pictures of the flowers blooming or the scenery around the misty morning lake. Also animations are possible.
    However, according to the related art, when the user wants to photograph the scenery around the morning lake in the fog, the user can only shoot in the foggy state, and when the fog is not, the subject of the desired background cannot be photographed. Therefore, in order to obtain a desired scene, the user is subject to time and space constraints and causes inconvenience to the user.
    The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to add a video camera to the video camera to shoot the subject in a misty state even if the fog is not actually in the fog It provides a method of implementing abandonment mode of.
    Another object of the present invention is to provide a method of implementing abandoning mode of a video camera, which can remove the temporal and spatial constraints and facilitate the user's convenience by making and photographing a misty background anytime and anywhere.
    1 is a circuit diagram schematically showing the configuration of a micom and a key input unit in a video camera to which the present invention is applied.
    2 is a flowchart illustrating a process of executing a method of implementing abandonment mode of the present invention by checking a key input in a microcomputer;
    3 is a flowchart illustrating a method of implementing abandonment mode by setting each address value of a microcomputer in more detail.
    Figure 4 is a graph showing the gain control state for each signal when setting the address value to implement the abandonment mode of the present invention.
    FIG. 5 is a waveform diagram showing an output form of a video signal divided into a normal mode (a) and a discard mode (b); FIG.
    Explanation of symbols on the main parts of the drawings
    1: micom 2: key input
    3: Mode selector 4: Fade key
    R1 to R4: resistance
    In the video camera implementation method of the present invention for achieving the above objects, the first process of checking the key input to determine whether the abandoned mode is selected, and in the case of the abandoned mode, whether the fade 1 mode is selected or faded 2 In the second step of checking whether the mode is selected, in the fade 1 mode, if the record key is pressed, the fade 1 mode is implemented. If the record key is pressed, the fade 1 mode is implemented. The third process of stopping, and in the fade 2 mode, if the record key is pressed, the fade 2 mode is implemented, and if the record key is pressed, the fourth process is implemented. Is done.
    Here, in the abandon mode of the third process and the fourth process, the setup level, gamma value, final luminance signal output level, maximum value of automatic gain control, average target value of appropriate exposure, final color signal output level, contour gain control value, noise The address values corresponding to the slice level values are sequentially set to be implemented.
    Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5 as follows.
    1 is a circuit diagram schematically showing the configuration of a micom and a key input unit in a video camera to which the present invention is applied. Reference numeral 1 is a microcomputer that checks the state of the function key to control the overall operation of the video camera, and optionally sets each address to execute the method of implementing the abandonment mode according to the present invention. As the user selects a mode by pressing a function key, the microcomputer 1 is connected to a key input unit 2 for applying a different level of direct current (DC) voltage to the microcomputer 1.
    The key input unit 2 will be described in more detail. The resistors R1 and R2 are connected between the power supply terminal Vcc and the mode selector 3, and the microcomputer 1 is connected to the connection points of the two resistors R1 and R2. ) Is connected. The mode selector 3 sets the corresponding output terminal voltage to a predetermined value when the user presses the P.AE (Program Auto Exposure) key or the aeration mode key. The microcomputer 1 receives the voltage divided by the resistors R1 and R2 and recognizes whether the current P.AE mode is selected or the abandon mode in the P.AE mode is selected. Similarly, resistors R3 and R4 are connected between the power supply terminal Vcc and the fade key 4, and the microcomputer 1 is connected to the connection point of the two resistors R3 and R4. When the fade key 4 is pressed, the voltage divided by the resistors R3 and R4 is input from the microcomputer 1 to recognize that the fade key 4 is in the fade 1 or fade 2 mode.
    2 is a flowchart illustrating a process of executing a method of implementing abandonment mode of the present invention by checking a key input in the microcomputer 1. When the power of the video camera is turned on, the microcomputer 1 is in a reset state (S1), is in an initial state (S2), and the P.AE key is changed due to a difference in the direct current (DC) voltage applied from the key input unit 2. If the state is checked (S3) and L (Low), normal operation is performed. If the P.AE key is H (High), check the Abandon Mode key again (S4). If this key is L, check the P.AE key again to execute the mode specified by the P.AE key. In the case where the abandon mode key is H, as described below, each address value of the microcomputer 1 is set to implement the abandon mode (S5).
    To this end, first, the microcomputer 1 checks the state of the fade key 4 (S6), and if the fade key 4 is L, the process starts again from step S5, and the fade key 4 is H. In the case of Fade 1 mode is checked (S7). Here, the fade key 4 performs a normal operation, that is, a fade off function when it is in an initial state, and performs a fade 1 operation when the fade key 4 becomes H at first, and the fade key once again. When (4) becomes H, the fade 2 operation is performed. When the fade key 4 becomes H again, the operation returns to the initial state and the normal operation is performed.
    When the key input is checked to recognize the fade 1 mode, the microcomputer 1 checks the state of the recording key (Sc) again (S8), and if the key is L, the process starts again from step S5. . If the recording key is H, recording starts (S9). First, the fade 1 mode is implemented (S10). Then, recording is made in the abandon mode (S11). The recording key is continuously checked (S12). If so, the process returns to step S11 to continue recording in the abandon mode. If the recording key is H, after fade 1 mode is implemented again (S13), recording is stopped (S14), and the process returns to step S4 to check again the abandon mode key.
    On the other hand, if it is determined in step S7 that the mode is not the fade 1 mode, the microcomputer 1 checks the key input again to determine whether the mode is the fade 2 mode (S15), and in the fade 2 mode, checks the state of the recording key. (S16). If the recording key is L, the process is performed again from step S5. If the key is H, recording starts (S17). First, the fade 2 mode is implemented (S18). (S19). Continue to check the recording key (S20), if this key is L, perform again from step S19; if the recording key is H, implement fade 2 mode (S21) and stop recording (S14), Returning to step S4, the operation of checking the abandon mode key is performed again.
    3 is a flowchart illustrating a method of implementing abandonment mode by setting each address value of the microcomputer 1 in more detail. When the power of the video camera is turned on, the microcomputer 1 is in the initial state (S22) and checks the state of the abandon mode key. When the abandon mode key becomes H, the microcomputer 1 sets an address (# 74) value, that is, a set up level to raise the black level of the luminance signal Y (S23). Next, gamma correction is performed to set the value of the address (# 75 N GAMMA) so that the gray scale of the image can be correctly reproduced (S24), and the address (# 76 N EYFAD) to adjust the gain for the final luminance signal output level. Set the value (S25).
    In addition, the microcomputer 1 sets the address (# 77 N AGC MAX) value to set the maximum value in the automatic gain control (AGC) (S26), and to obtain the average target of the appropriate exposure (AE). An address # 7F N AETAR value is set (S27), and an address # 80 N ECFAD value is set to adjust a gain for the final color signal output level (S28). After setting the address (# 80) value, the microcomputer 1 sets the address (# 81 N CAG, # 82 N CNSL) to set the Aperture Gain Control value and the Noise Slice Level value. ) Are set respectively (S29 and S30). When the address values are set as described above, the subject can be photographed by implementing the abandonment mode such as fog.
    4 is a graph showing a gain control state for each signal when setting an address value to implement the abandonment mode of the present invention. On the horizontal axis, the start point (AGC START) of automatic gain adjustment set by setting the address (# 73, # 77) value, the minimum value (AGC MIN) and maximum value (AGC MAX) at the time of gain adjustment are displayed. The vertical axis represents the gain adjustment value. The gain adjustment for the set-up level (address # 74 SET UP) is performed between the minimum value and the maximum value. Gain control for the gamma value (address # 75 N GAMMA) and final luminance signal output level (address # 76 EYFAD) and final color signal output level (address # 80 ECFAD) increases slightly from the start point to the maximum, slightly above the setup level. It is done in the state.
    FIG. 5 is a waveform diagram illustrating an output form of a video signal divided into a normal mode and abandon mode. FIG. 5A is an output waveform in the normal mode, and a video signal having the displayed level A is output. FIG. 5B is an output waveform in abandon mode, in which a video signal having a level AB is output while a black level (setup level) of the luminance signal is floated by the displayed level B as the address is set. do.
    As described above, the present invention can remove the temporal and spatial constraints by adding the abandon mode, so that the subject can be photographed in a misty state even when the fog is not actually present. In addition, it is possible to make the user's convenience by shooting the misty background at any time and anywhere without going directly to the misty lake.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] In the method of implementing the designated mode by checking the key input and setting the address value of the microcomputer,
    Checking a key input to determine whether the abandon mode is selected;
    A second step of checking whether a fade 1 mode or a fade 2 mode is selected in the abandon mode;
    A third step of implementing a fade 1 mode when the record key is pressed in the fade 1 mode and recording in the abandon mode, and stopping the recording after implementing the fade 1 mode when the record key is pressed again;
    In the fade 2 mode, when the record key is pressed, the fade 2 mode is implemented and the recording is in the abandon mode, and when the record key is pressed, the fade 2 mode is implemented. How to implement abandon mode of camera.
    [2" claim-type="Currently amended] The method of claim 1, wherein the method of implementing the abandonment mode in the third and fourth processes comprises: setting an address value corresponding to a setup level to raise a black level of the luminance signal; Setting an address value corresponding to a gamma value so as to correctly reproduce the gradation of the image; Setting an address value to adjust a gain for the final luminance signal output level and the final color signal output level; Setting an address value to set a maximum value of automatic gain adjustment and an average target value of appropriate exposure; A method of implementing abandonment mode of a video camera, characterized by setting an address value to set a contour gain adjustment value and a noise slice level value.
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    同族专利:
    公开号 | 公开日
    KR100209914B1|1999-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-27|Application filed by 김광호, 삼성전자 주식회사
    1996-12-27|Priority to KR1019960072778A
    1998-09-25|Publication of KR19980053650A
    1999-07-15|Application granted
    1999-07-15|Publication of KR100209914B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960072778A|KR100209914B1|1996-12-27|1996-12-27|Method for realizing foggy mode in a video camera|
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