JP2002152554A - Video reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video reproducing device capable of easily adjusting the picture quality of a video to be reproduced. SOLUTION: A part of a menu window 50 for changing a picture quality adjustment parameter is provided with a preview window 53. When the picture quality adjustment parameter is changed, only the video in the preview window 53a is changed in picture quality based on the changed picture quality adjustment parameter, and a video before the change of the picture quality adjustment parameter is displayed in the other area. Thus, it is possible to change the picture adjustment parameter comparing both videos.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video reproducing apparatus which facilitates adjusting the quality of reproduced video.

[0002]

A video reproducing apparatus such as a video projector has a function of adjusting the image quality of reproduced video. How to adjust the image quality depends on
It is determined by image quality adjustment parameters such as a brightness parameter and a contrast parameter.
The setting can be changed by the user.

[0003] Although operating devices such as an operation knob and a remote control are open to the user, in the conventional video reproducing device, when the image quality adjustment parameter is changed by operating the operating device, the image quality of the entire screen is directly reduced. It is difficult to understand how much the image quality has changed since the parameter was changed before the parameter change, and it was difficult to appropriately adjust the image quality.

[0004] It is an object of the present invention to provide a video reproducing apparatus in which the quality of reproduced video is easily adjusted.

[0005]

According to a first aspect of the present invention, there is provided a reproducing apparatus for reproducing an image on a screen, an image quality adjusting means for adjusting the image quality of the reproduced image based on the image quality adjusting parameter, and an image quality adjusting parameter. Operating means for changing the image quality adjustment parameter by the operating means, when the image quality adjustment parameter is changed by the operating means, to reproduce the changed video in a partial area of the screen, The video before the change is reproduced. The invention of claim 2 is
In the above invention, the reproducing unit moves the position of the partial area on a screen in accordance with an operation of the operating unit. According to a third aspect of the present invention, in the above-mentioned invention, when the image quality adjustment parameter is changed by the operation means, the reproduction means stores the image of the other area before the image quality adjustment parameter is changed, and the changed image quality adjustment parameter. Is input to the image quality adjustment means, and then the image of the partial area after the image quality adjustment parameter input from the image quality adjustment means is combined with the stored image of the other area and reproduced. . According to a fourth aspect of the present invention, in the above-mentioned invention, when the image quality adjustment parameter is changed by the operation means, the playback means displays the image of the partial area among the images before the image quality adjustment parameter change input from the image quality adjustment means. It is characterized in that it is processed and reproduced into a video after the image quality adjustment parameter is changed.

In the above invention, the video reproducing apparatus reproduces an image on a screen such as a monitor or a screen, and the image quality adjusting means adjusts the image quality of the reproduction. Image quality adjustment contents
For example, luminance, contrast, hue, saturation, sharpness, color temperature, and the like. The image quality adjustment parameters for determining these adjustment degrees can be changed (adjusted) by the user operating the operation means. According to the present invention, when the user changes the image quality adjustment parameter, the image before the parameter change and the image after the parameter change are displayed in a divided area on the screen, so that the user can visually check how much the parameter has been changed. The parameter can be changed while making the determination, and the image quality adjustment parameter can be accurately changed. Note that the partial area may be a small window-shaped area or a wide area obtained by dividing the screen by a straight line or the like. Further, since the partial area in which the image after the change is displayed can be moved, the image quality adjustment parameter can be changed by moving the partial area to the most remarkable place, and can be accurately adjusted. The image quality adjustment parameters can be changed.

[0007]

FIG. 1 is a block diagram of a video projector according to an embodiment of the present invention. A video projector receives an analog video signal from a video playback device such as a DVD player, converts the analog video signal into digital data, adjusts the image quality, and projects the image on a screen. In the figure, a signal input from a video reproducing device such as a DVD player may be in any format such as a composite signal or an RGB component signal. The input video signal is converted into digital data by the AD converter 11 and becomes video data. This video data is input to the image quality adjustment unit 12. The image quality adjustment unit 12 is based on the image quality adjustment parameters input from the control unit 10,
The image quality of the video data input from the video playback device is adjusted. The image quality adjustment parameter includes brightness (Brightness
s), contrast (Contrast), hue (Hu)
e), saturation (Saturation), sharpness (Sharpness), color temperature (Color Tem)
p) and the like. The video data whose image quality has been adjusted by the image quality adjustment unit 12 is input to the frame controller 13. The frame controller 13 has a frame buffer as shown in FIG. 3, stores one frame of video data input from the image quality adjustment unit 12, and stores the video data in synchronization with the processing cycle of the optical system 14 at the subsequent stage. Output. The reproduced image is projected on the screen 20 by the light source lamp and the projection lens. Also, the remote control communication unit 1
Reference numeral 5 receives an infrared signal transmitted by the remote controller shown in FIG. 2, demodulates the signal, and inputs a code generated by operating the remote controller to the control unit 10. The control unit 10 controls the entire device, that is, the AD converter 11 and the image quality adjustment unit 1
2. It controls the frame controller 13 and the optical system 14, and is constituted by a microcomputer.

FIG. 2 is an external view of a remote controller 2 attached to the video projector. The remote controller 2 has four cross-shaped cursor buttons 21 (21u, 21d, 211, 21r) composed of up, down, left, and right button switches.
The enter button 22 provided at the center of the two cross cursor buttons 21, the menu button 23 for calling or deleting the menu window image 50 (menu 50: see FIG. 5), and the selection of a predetermined area in the menu 50. An escape button 24 for releasing is provided. This remote control is used when adjusting the image quality of the video projector 1 or the like.

FIG. 3 is a block diagram of the frame controller 13. As shown in FIG. The frame controller 13 includes processing units 30 and 1 that control input / output and synthesis of video data.
Frame buffer 31 for storing video data of a frame
have. At the time of normal reproduction, the video data input from the image quality adjustment unit 12 is written into the frame buffer 31 for each frame, and this is output in synchronization with the processing cycle of the optical system 14.

When the user operates the remote controller 2 to call the menu, the control unit 10 generates the menu 50 shown in FIG. The processing unit 30 combines the image data with the video data input from the image quality adjustment unit 12 and inputs the synthesized image data to the optical system 14. Therefore, at this time, the screen 15
A screen as shown in FIG. Menu 5
The video data of 0 may be separately buffered, or may be written directly to the frame buffer 31.

The frame controller 13 has a capture memory 32 which is smaller than the frame buffer 31 and can store a part of a frame. The capture memory 32 is used when the user adjusts the image quality (changes the image quality adjustment parameters).

Here, in this specification, (of image quality)
The adjustment is used as a term indicating the image data processing operation performed by the image quality adjustment unit 12 based on the image quality adjustment parameter, and the adjustment of the image quality represents a change operation of the image quality adjustment parameter performed by the user operating the remote controller 2. Used as a word.

When the user adjusts the image quality, the remote controller 2
The menu button 23 is turned on to call up the menu.
At this time, the user may pause a video playback device such as a DVD player connected to the video projector connected in front of the video projector so that the video is stopped and a still image is output. Good. When the menu is called, the control unit 10 generates a menu window image 50 as shown in FIG.
To enter. The frame controller 13 combines the menu window image 50 with the video data input from the image quality adjustment unit 12 and outputs the menu window image 50 to the optical system 14.
A composite image as shown in FIG.

Here, the menu window image 50 will be described with reference to FIG. Hereinafter, the menu window image 50 may be simply referred to as a menu 50. The menu includes a plurality of pages. Each page includes a tag area 51 as a heading and a setting area 52 for setting parameters corresponding to the page. FIG. 7A shows a tag area 51a of the image quality adjustment page.
Indicates a state where is selected. In this state, the tag area 51a is colored in a different color from the other tag areas so as to stand out. FIG. 7B shows a state in which the second parameter Contrast from the top is selected in the setting area of the image quality adjustment page. The selected parameter is colored in a different color from the other parameters to make it stand out.
0 Parameter operation explanation (Ch
(Angle Picture Contrast) is displayed. In addition, Video displayed on the right side is an input source name. In the column of the selected parameter, an arrow 5 in a movable direction indicating which cursor button is turned on to move to another area (parameter) is displayed.
5 is displayed. In the same figure, it is shown that it can be moved up or down. When the image quality adjustment page is selected, a preview window 53 for displaying an image adjusted in accordance with the image quality adjustment is displayed at the left of the menu 50.
Is set.

When the downward cursor button 21d is turned on twice from the state shown in FIG. 2A, the state shifts to the state shown in FIG. Further, by turning on the right cursor button 21r in the state of FIG. 9A, it is possible to move to another page. The image of the setting area of the selected page is displayed in the display area 52 of the setting area.

When any one of the tag areas 51 is selected, the cursor button 21
When u is turned on, the moving bar 54 is selected. The moving bar 54 is not normally displayed, but is displayed only when selected. Alternatively, they may be displayed at all times, and may be colored when selected to make them stand out. This moving bar 54
Is displayed, one of the cursor buttons 2
When 1 is turned on, the entire menu 50 moves in the direction of the turned-on cursor.

In FIG. 3, after the menu 50 is displayed, when the user operates the remote controller 2 to select an image quality adjustment area, the video data input from the image quality adjustment unit 12 at that time is captured in a frame buffer. That is, the video data at that time is held in the frame buffer 31 as video data before adjustment, and writing of video data input thereafter to the frame buffer 31 is prohibited.

When the user further operates the remote controller to change the image quality adjustment parameters, that is, when the image quality is adjusted, the control unit 10 inputs the image quality adjustment parameters changed by the adjustment to the image quality adjustment unit 12. Then, the video data output from the image quality adjustment unit 12 thereafter has the image quality adjusted by the operation of the user. The frame controller 13 does not take in the video data into the frame buffer 31, but writes only the video data of a part of the video data into the capture memory 32. The video data to be written to the capture memory 32 is the menu 5
This is video data corresponding to the area of the preview window 53 provided to the left of 0. And the processing unit 3
0 is 1 before the change stored in the frame buffer 31.
The menu 50 and the preview image data, which is the image data after the image quality has been changed and captured into the capture memory 32, are combined with the image data of the entire frame and output to the optical system 14. As a result, the image after the image quality adjustment is displayed in a window in the image before the image quality adjustment, and it is possible to compare how much the image quality has changed, and the user can adjust the image quality while watching the actual image and comparing. can do.

The user adjusts the image quality until the desired image quality is obtained, and when the image quality becomes the desired image, turns on the enter button 22 (or exits the image quality adjustment page). Then, determination instruction data indicating that the adjustment of the image quality has been determined is transmitted from the control unit 10 to the processing unit 30. The processing unit 30 resumes capturing the video data input from the image quality adjustment unit 12 into the frame buffer 31 in response to the instruction data, so that the entire video becomes the adjusted video.

Then, the user presses the menu button 23 again.
When is turned on, the menu is deleted from the screen, and a normal image is output to the optical system 14. After that, the user releases the pause of the video reproducing apparatus at the preceding stage and resumes normal reproduction so that the video of the moving image is projected. In this way, in this apparatus, when the user adjusts the image quality of the image, both the image before adjustment and the image after adjustment are projected on the screen 20, so that the user can compare the two and adjust the image quality. Can be adjusted optimally.

In this embodiment, the preview image is displayed inside a window provided on a part of the left side of the menu. However, the combination of the image before the image quality adjustment and the preview image after the adjustment is different. It is not limited to this. For example, the video before adjustment may be left in the window 53 of the menu 50, and all screens other than the menu may be changed to the preview video after adjustment. FIG.
As shown in (B), the screen may be divided into two areas 201 and 202 without using a window, a video before adjustment is displayed in one area 201, and a preview video is displayed in the other area 202. Good. Also, the boundary between the video before adjustment and the preview video may or may not be present. In the example of the menu window image in FIG. 5, the left border of the preview window 53 may be eliminated.

FIGS. 6 to 8 are flowcharts showing the operation of the control unit 10. This operation indicates a processing operation corresponding to a button operation of the remote controller 2. As described above, the remote controller 2 has the up, down, left, and right cross cursor buttons 21, the determination button 22, the menu button 23, and the escape button 23, and when each of the buttons is operated, performs an operation corresponding thereto. When the menu 50 is not displayed, button operations other than the menu button 23 are invalid.

When the menu button 23 is operated, s
In step S1, this is determined, and the processing of s2 to s5 is executed. s2
Then, it is determined whether the menu 50 is currently displayed. If the menu 50 is not being displayed, it is determined that the operation of the menu button 23 is a menu call, and the data of the menu window image 50 is output to the frame controller 13 and displayed on the screen (s3).
From the displayed menu 50, select the tag area 51a of the image quality adjustment page which is the tag area at the upper left (s
4) The area is colored and the movable direction is displayed (s5). In the case of the tag area 51a of this image quality adjustment page, the movable directions are upward (moving bar 54), right (other tag area), and downward (image quality adjustment page setting area 52).
3 directions.

On the other hand, if the menu 50 is being displayed when the menu button 23 is displayed, the operation of the menu button 23 is determined to be an instruction to delete the menu, and the frame controller 13 instructs the frame controller 13 to delete the menu window image. The menu is erased by instructing (s6). If the selected area is the setting area of the image quality adjustment page, the frame controller 13 is instructed to release the capture of the video data to the frame buffer 31 (s7), and the normal operation is performed. Return to playback.

If the cross cursor button 21 is turned on, this is determined in s10. If the menu screen is displayed (s11), the operations in s12 to s36 are executed. At this time, if the uppermost movement bar 54 of the menu 50 is selected, the menu 50 is moved on the screen according to the direction of the turned-on cursor button (s13). This movement may be performed by the control unit 10 changing the display coordinates of the menu window image with respect to the frame controller 13.

If the selected area is other than the moving bar 54, the process proceeds to s14, where the cursor buttons 21
u, 21d is turned on or the left and right cursor buttons 21
It is determined whether r, 21l has been turned on (s14). When the up and down cursor buttons 21u and 21d are turned on, the area to be selected is moved in accordance with the operation (s1).
5). That is, all parameter changes in the setting area are performed by the left and right cursor buttons 21r and 21l, and the up and down cursor buttons 21u and 21d are exclusively used to move the selection of the area. When the moving bar 54 is selected as a result of this movement, the moving bar 54 is displayed so as to be visible (s17). When the user moves to an area other than the movement bar, the selected area is colored to make it stand out, and an arrow in a direction in which the selected area can be moved is displayed (s18).

As a result of this movement, if the setting area 52 of the image quality adjustment page is selected, the image data currently input from the image quality adjustment unit 12 is input to the frame buffer 13 as the image before adjustment. Buffer 3
1 is instructed to capture (s19, s2
0). If another setting area is selected as a result of this movement, processing corresponding to that area is performed (s2).
1, s22). Also, when the selection of the area is moved from the setting area 52 of the image quality adjustment page to the tag area 51a by this movement, the capture of the video before the adjustment is canceled,
Frame controller 1 to return to normal video playback
3 (s23, s24).

The left and right cursor buttons 21r, 21r
When 1 is turned on, it is determined whether the tag area 51 is currently selected or the setting area is selected (s30). When the tag area 51 is selected, the user moves to the tag area of the next page in the operated direction and displays the page in the setting area (s3).
1) The tag area selected by the movement is colored to make it stand out, and an arrow in a direction movable from the tag area is displayed (s32). If the setting area is selected when the left and right cursor buttons are turned on, the setting value is changed in accordance with the operation (s33). At this time, the image quality adjustment area is selected, and the brightness (Brightness) and the contrast (Contr) are selected.
ast), hue (Hue), saturation (Saturati)
on), sharpness (Sharpness), or color temperature (Color Temp), if the value of the parameter is changed (s34), the changed parameter value is transmitted to the image quality adjustment unit 12 to adjust the image quality. Is changed (s35). If the area is a setting area other than the image quality adjustment section, a process corresponding to the area is executed (s36).

When the enter button 22 is turned on, it is determined in s40, and the processes in s41 to s44 are executed. If the setting area 52 of the image quality adjustment page has been selected when the confirm button 22 is turned on, the image is input from the image quality adjustment unit 12 to the frame controller 13 at that time in order to once determine the content of the adjustment. It instructs the frame buffer 31 to recapture the existing video data (s41, s42). As a result, the image quality adjustment content when the confirm button 22 is turned on is taken into the frame buffer 31 as a video before adjustment. If another setting area has been selected, the processing corresponding to that area is executed (s
43, s44). If the selected area is other than the set area, nothing is performed.

If the escape button 24 has been turned on, this is determined in s45, and the operations in and after s46 are executed. In this embodiment, the escape button 24 is valid only when the moving bar 54 is selected. Therefore, it is determined whether the moving bar 54 is currently selected (s46). If the moving bar 54 is not selected, nothing is performed. When the moving bar 54 is selected,
When the escape button 24 is turned on, it is determined that the movement is completed, and the selection is moved to the tag area selected before moving to the movement bar 54 (s47). Then, the tag area is colored to make it stand out, and an arrow in a direction movable from the tag area is displayed (s48).

As described above, in this embodiment, the menu 50 is displayed, and when the setting area 52 of the image quality adjustment page is selected, the image before adjustment is displayed on a screen other than the menu 50 and the menu 50 is displayed. By displaying the adjusted preview image in the preview window 53, it is possible to adjust the image quality to the optimum while comparing the two.

Also, no matter which area is selected in the menu 50, the direction in which movement is possible when moving from that area to another area is indicated by an arrow, so that the user can accurately determine It becomes possible to operate. In the embodiment, the arrow is displayed in the selected area. However, an arrow display area may be provided outside the selected area, and the arrow may be always displayed in the area. Further, an arrow in a movable direction may be displayed in all areas including an area that is not selected.

Further, by allowing the menu 50 to be moved within the screen, it is possible to move the menu out of the way when adjusting the image quality.
The preview image can be displayed by moving the preview window 53 to the most noticeable place, and the image quality can be easily adjusted.

FIGS. 9 and 10 show another embodiment. In these embodiments, the frame controller 13 includes only the processing unit 30 and the frame buffer 31, and the embodiment of FIG. 9 performs a preview using the function of the control unit 10, and the embodiment of FIG. The preview is performed using the mask function of the processing unit 30. FIG. 9 shows that the processing unit 10 takes in a partial area of the video data input to the frame controller 13, adjusts the image quality, and feeds this back to the frame controller 13. In this embodiment, the frame controller 13 stores the video data input from the image quality adjustment unit 12 in the frame buffer 31, and stores the video data in a partial area (the area of the preview window 53 of the menu 50) designated by the control unit 10. Control unit 1 for video data
Enter 0. The control unit 10 adjusts the video data of this partial area to the image quality adjusted by the user. The control unit 10 stores the image quality adjustment parameters currently set in the image quality adjustment unit 12, and also inputs the image quality adjustment parameters changed by the user. Based on this, the control unit 10 adjusts the input image data of the partial area to the image quality changed by the user and feeds it back to the frame controller 13. The frame controller 13 combines the original video data (video before adjustment) buffered in the frame buffer 31 and the video data of a partial area fed back from the control unit 10 (the preview video and menu window image after adjustment are synthesized). Output to the optical system 14. In this case, the frame controller 1
3 (processing unit 30) may overwrite the video data fed back from the control unit 10 to the frame buffer 31, and synthesizes the image data in the processing unit 30 and outputs it to the optical system 14 without rewriting the frame buffer 31. You may do so.

In the case of the above configuration, in the flowcharts of FIGS. 6 to 8, the processing unit 10 uses the video data input from the frame controller 13 instead of transmitting the parameters to the image quality adjustment unit 12 in s35. The image quality is adjusted (re-adjusted) based on the change and fed back to the frame controller 13.

The above processing is basically performed on a still image. However, if the processing of the control unit 10 is performed at a high speed, a moving image can be previewed as it is. Further, in this embodiment, since the processing image is created by the processing unit 10, it is not necessary to directly input the setting change (adjustment) of the image quality adjustment parameter by the user to the image quality adjusting unit 12, and the setting change can be canceled. Easy. When previewing a moving image as it is, in the flowcharts of FIGS. 6 to 8, there is no need to instruct the capture and release of the image, and always use the latest image data in the image quality adjustment unit 1.
2 and write into the frame buffer 31, of which the video data corresponding to the preview window may be input to the control unit 10.

In the embodiment shown in FIG. 10, when the setting area 52 of the image quality adjustment page is selected, the processing section 30 of the frame controller 13 sends the preview window 5
By masking the area other than the area No. 3, the video data input at that time is captured as a video before adjustment. When the image quality adjustment parameter is changed by the remote control operation, the control unit 10 transmits the parameter to the image quality adjustment unit 12. Therefore, the image quality adjustment unit 1
2 adjusts the image quality of the video data to be input thereafter and inputs the adjusted video data to the frame controller 13. This new video data is written to the frame buffer 31 only in a portion corresponding to the unmasked preview window 53. As described above, by directly writing the preview video data to the frame buffer 31, the capture memory 32 can be omitted.

In this embodiment, the menu 50 has two levels of items, page → parameter.
As shown in FIG. 11, it is possible to have three stages: page (menu 1 to 5) → submenu (Prm1 to 5) → parameter. Also in this case, as shown in the figure, the movable direction is displayed by an arrow when each item (page, submenu, parameter) is selected. Although all the arrows are shown in this figure, actually, only the arrows in the movable direction from the item selected at that time are displayed.

Even if the menu 50 shown in FIG. 5 is moved to the right end of the screen, the preview window 53 cannot be moved to the right end because of the setting area 52. Therefore, when the menu 50 is moved to the right end or by a predetermined operation using the remote controller 2, the arrangement in the window 50 is reversed, and the setting area 52 is set to the left side and the preview window 53 is set.
May be the right end.

In this embodiment, a video projector has been described as an example. However, the present invention is not limited to a video projector, but can be applied to a reproducing apparatus having a CRT monitor.

[0041]

As described above, according to the present invention, when the user changes the image quality adjustment parameters, the image before the parameter change and the image after the parameter change are displayed on the screen by dividing the area. Allows the user to change the parameters while visually determining how much the parameters have been changed, making it possible to accurately change the image quality adjustment parameters. Further, since the partial area in which the image after the change is displayed can be moved, the image quality adjustment parameter can be changed by moving the partial area to the most remarkable place, and can be accurately adjusted. The image quality adjustment parameters can be changed.

[Brief description of the drawings]

FIG. 1 is a block diagram of a video projector according to an embodiment of the present invention.

FIG. 2 is an external view of a remote control of the video projector.

FIG. 3 is a block diagram of a frame controller of the video projector.

FIG. 4 is a diagram showing an example of a screen configuration during menu display of the video projector.

FIG. 5 is a diagram showing a display example of a menu of the video projector.

FIG. 6 is a flowchart showing the operation of the video projector.

FIG. 7 is a flowchart showing the operation of the video projector.

FIG. 8 is a flowchart showing the operation of the video projector.

FIG. 9 is a view showing another embodiment of the preview system of the video projector.

FIG. 10 is a diagram showing still another embodiment of the preview system of the video projector.

FIG. 11 is a diagram showing another configuration example of the menu.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video projector, 2 ... Remote control, 11 ... AD converter, 12 ... Image quality adjustment part, 13 ... Frame controller, 14 ... Optical system, 15 ... Remote control communication part, 20 ... Screen, 21 (21u, 21d, 211, 21r) …
Cross cursor button, 22 ... Confirm button, 23 ... Menu button, 24 ... Escape button, 30 ... Processing unit, 3
1: frame buffer, 32: capture memory, 50
... menu, 51 ... tag area, 52 ... setting area, 5
3 preview window, 54 moving bar, 55 movable direction arrow, 201 image display area before adjustment, 20
2: Preview video display area

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 5C021 PA79 PA82 RB03 RB04 XA01 XA06 XA13 XB02 YC03 ZA04 5C025 AA28 BA28 CA02 CA06 DA08 5C026 CA01 CA02 CA15

Claims (4)

[Claims] 1. A video comprising: playback means for playing back an image on a screen; image quality adjustment means for adjusting the image quality of the played image based on the image quality adjustment parameter; and operation means for changing the image quality adjustment parameter. A playback device, comprising: a playback device that, when an image quality adjustment parameter is changed by an operation device, plays back the changed video in a partial area of the screen and plays the video before the change in another area. . 2. The video playback apparatus according to claim 1, wherein the playback unit moves the position of the partial area on a screen according to an operation of the operation unit. 3. When the image quality adjustment parameter is changed by the operation means, the reproduction means stores the image of the other area before the image quality adjustment parameter is changed, and sends the changed image quality adjustment parameter to the image quality adjustment means. 3. The image according to claim 1, wherein the image of the partial area after the image quality adjustment parameter input from the image quality adjustment means is input, and the stored image of the other area are combined and reproduced. Video playback device. 4. When the image quality adjustment parameter is changed by the operation means, the playback means changes the image of the partial area from among the images before the image quality adjustment parameter change input from the image quality adjustment means after the image quality adjustment parameter is changed. The video reproducing apparatus according to claim 1, wherein the video reproducing apparatus processes and reproduces the video.