JP2007020035A - Video signal processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce blur, crush and roughness of characters due to the performance difference on the side of a display unit only by extremely simple processing, by preliminarily providing a table taking into consideration the performance difference on the side of the display unit. <P>SOLUTION: A font size table 8a which preliminarily stores pieces of data regarding optimal font size by manufacturer of a TV monitor 20, connected to this video signal processor and a luminance level table 8b which preliminarily stores pieces of data regarding the optimal luminance level by every manufacturer of the TV monitor 20 connected to the processor is stored in a memory 8; and when the user specifies an arbitrary manufacturer from among all the manufacturers displayed on a menu picture by using a remote controller 11, a control circuit 7 extracts the font size of the specified manufacturer from the font size table 8a, extracts the luminance level of the specified manufacturer from the luminance level table and performs OSD display with the extracted font size and/or the extracted luminance level. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video signal processing device such as a DVD (Digital Versatile Disk) player or a DVD recorder that superimposes an OSD signal on a video signal and outputs the superimposed signal to a display device.

  In the case of a video signal processing device that is implemented to display and output a font with a constant luminance by implementing one type of font data, the performance difference on the display device (TV receiver, etc.) side that displays the output video signal As a result, the characters in the font may flicker or bleed out and may be unreadable. On the other hand, when the font is too large or the brightness is low, there is a problem that the roughness of the font may be seen.

  Therefore, various techniques for displaying such OSD fonts on the display screen more easily have been proposed (see, for example, Patent Documents 1 to 4).

  The video device described in Patent Document 1 outputs standard size characters from the first on-screen signal generating means in the case of a television receiver having a relatively small screen size, and in the case of a television receiver having a large image size. The second on-screen signal generating means outputs a small character size to keep the relative character viewing angle relatively constant.

  Further, in the video reproduction apparatus described in Patent Document 2, when the display mode changeover switch is set to “EVF display mode” which is a small monitor means, the size of a specific pattern such as characters is set to the screen size. On the other hand, when the display mode corresponds to a large-scale monitor means (for example, an external monitor display device) while the “EVF display mode” is displayed relatively large, the specific pattern such as characters is displayed. A “display display mode” for displaying the size relatively small with respect to the screen size is selected.

  Further, the OSD display receiver described in Patent Document 3 detects the OSD area of the image / OSD signal, the OSD font, the OSD luminance level, the image signal luminance level, and the motion information of the image information, thereby converting the image / OSD signal into the image / OSD signal. Optimal image quality correction is applied.

  Further, the OSD device described in Patent Document 4 divides the display screen into a plurality of areas, and the brightness or color information of the divided areas based on the respective AE information obtained by lighting each divided area. In accordance with (RGB information), at least one of the luminance and color of the character information displayed in each of the divided areas is changed.

According to Patent Documents 1 to 4, it is possible to display the OSD font more easily on the display screen.
Japanese Patent Laid-Open No. 4-100386 Japanese Patent Laid-Open No. 5-161085 JP 2004-221750 A JP 2003-219435 A

  However, since the video device described in Patent Document 1 needs to have two types of means, that is, a first on-screen signal generation unit and a second on-screen signal generation unit, the number of parts increases and the manufacturing cost increases. There was a problem that caused an increase. In addition, since there are only two types of character sizes that can be selected, a standard character size and a smaller character size, there is a problem that various screen sizes cannot be supported.

  In addition, the video reproduction apparatus described in Patent Document 2 has a problem that it cannot cope with various screen sizes because there are only two display modes that can be selected: “EVF display mode” and “display display mode”.

  Further, the OSD display receiver described in Patent Document 3 needs to detect the OSD area of the image / OSD signal, the OSD font, the OSD luminance level, the image signal luminance level, the motion information of the image information, and the like. There was a problem of becoming complicated.

  In the OSD device described in Patent Document 4, the display screen is divided into a plurality of areas, and brightness and color information (RGB information) are analyzed for each divided area. Therefore, there has been a problem that a complicated determination process such as "."

  Further, as described in the above-mentioned prior art, the ones described in Patent Documents 1 to 4 do not take into consideration the performance difference on the display device (TV receiver or the like) side that displays the output video signal. . In other words, the devices described in Patent Documents 1 to 4 perform complicated processing in order to display the OSD font more easily on the display screen regardless of the performance of the display device connected thereto. However, if the font display is performed in consideration of the performance of the display device, the OSD font can be displayed on the display screen more easily without performing such complicated processing.

  The present invention was created by paying attention to such a difference in performance on the display device side, and its purpose is to provide a table that takes into account the performance difference on the display device side in advance, so that only extremely simple processing is possible. Therefore, an object of the present invention is to provide a video signal processing apparatus that can reduce blurring, crushing, and roughness of characters due to performance differences on the display device side.

  The video signal processing apparatus of the present invention is a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs the signal to a display device, and further includes a switching unit that switches a font size of the OSD signal. The font size of the OSD signal is switched according to the display device connected to the device. More specifically, a font size table preliminarily storing font size data for each manufacturer of the display device connected to the device, and a designation for designating the manufacturer of the display device connected to the device And the switching means extracts the font size of the designated manufacturer from the font size table when the manufacturer of the display device is designated by the user by the designation means, and the extracted The OSD signal is output with the font size. That is, according to the video signal processing apparatus of the present invention, since characters and the like can be displayed with an optimum font size corresponding to the manufacturer of the display apparatus connected to the apparatus, the character of the display apparatus is affected by the difference in performance. Bleeding, crushing, and roughness can be reduced.

  The video signal processing apparatus of the present invention is a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs the signal to a display device, and further includes a switching unit that switches a luminance level of the OSD signal. The brightness level of the OSD signal is switched according to the display device connected to the device. More specifically, a brightness level table that stores data of brightness levels optimal for each manufacturer of the display device connected to the device, and a designation for designating the manufacturer of the display device connected to the device And when the manufacturer of the display device is designated by the designation means by the designation means, the switching means extracts the designated manufacturer's luminance level from the luminance level table, and extracts the extracted luminance level table. The OSD signal is output at a luminance level. That is, according to the video signal processing device of the present invention, characters and the like can be displayed at an optimum luminance level corresponding to the manufacturer of the display device connected to the device. Bleeding, crushing, and roughness can be reduced.

  The video signal processing device according to the present invention is a video signal processing device that superimposes an OSD signal on a video signal and outputs the signal to a display device, and switches the font size of the OSD signal and the luminance level of the OSD signal. Means for switching between the font size and the luminance level of the OSD signal in accordance with the display device connected to the apparatus. More specifically, a font size table storing in advance font size data optimal for each manufacturer of the display device connected to the apparatus, and an optimum for each manufacturer of the display device connected to the apparatus A brightness level table preliminarily storing brightness level data; and designation means for designating a manufacturer of the display device connected to the apparatus. Is extracted from the font size table, the luminance level of the specified manufacturer is extracted from the luminance level table, and the extracted font size and luminance level are specified. Thus, the OSD signal is output. That is, according to the video signal processing apparatus of the present invention, since characters and the like can be displayed with an optimum font size and luminance level corresponding to the manufacturer of the display apparatus connected to the apparatus, there is a difference in performance on the display apparatus side. Can reduce blurring, crushing, and roughness of characters.

  Further, according to the video signal processing device of the present invention, the designating unit may be configured to designate the manufacturer of the display device by the user selecting an arbitrary manufacturer from all manufacturers displayed on the menu screen. Good. Or you may comprise so that the manufacturer of a display apparatus may be designated by inputting a manufacturer code into the code input window displayed on the menu screen. In this case, the manufacturer code to be input to the code input window is described in a list form in advance in a booklet such as a manual, and the user selects a desired code from the list and selects a remote controller or the like. The manufacturer code may be input from

  According to the video signal processing device of the present invention, characters and the like can be displayed with the optimum font size or luminance level corresponding to the manufacturer of the display device connected to the device, or with the font size and luminance level. It is possible to reduce the occurrence of problems such as bleeding, crushing, and roughness of characters due to performance differences on the device side. As a result, the user can view an easy-to-see OSD screen without eye fatigue.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a block configuration of an optical disc apparatus which is an embodiment of a video signal processing apparatus of the present invention.

  An optical disc apparatus 1 according to this embodiment includes an optical pickup 2 that reads a video signal recorded on an optical disc (not shown), an image memory 3 that stores a video signal read by the optical pickup 2, and a video signal stored in the image memory 3. The signal processing circuit 4 for decoding the signal, the DA signal 5 for converting the video signal decoded by the signal processing circuit 4 into a video signal for the TV monitor device 20 and outputting it, and the OSD signal for outputting to the TV monitor device 20 An OSD circuit 6 for displaying a predetermined OSD, a control circuit 7 for controlling the above-described blocks, an operation program for the control circuit 7 and a memory 8 for storing various font data to be displayed on the TV monitor device 20, and a user in the control circuit 7 The operation unit 9 for inputting various commands and the operation signal from the remote controller 11 are received and input to the control circuit 7. And a receiving portion 10 that.

  The control circuit 7 superimposes the OSD signal generated by the OSD circuit 6 on the video signal decoded by the signal processing circuit 4 and outputs it to the DA conversion circuit 5. The control circuit 7 has a switching control function for switching the font size of the OSD signal generated by the OSD circuit 6.

  Further, in the memory 8, a font size table 8a preliminarily storing data of a font size optimum for each manufacturer of the TV monitor device 20 connected to this apparatus, and each manufacturer of the TV monitor device 20 connected to this apparatus. And a brightness level table 8b in which data of brightness levels optimum for the image are stored in advance.

  FIG. 2 shows a configuration example of the font size table 8a.

  This font size table 8a is composed of the manufacturer name of the TV monitor device 20 connected to this apparatus and the optimum font size (dot) data corresponding to the manufacturer name. In this example, the optimal font size of manufacturer A is 8 × 8, the optimal font size of manufacturer B is 16 × 16, the optimal font size of manufacturer C is 24 × 24, and the optimal font size of manufacturer D is 16 ×. 16,... Such an optimal font size is determined, for example, by actually connecting each manufacturer's TV monitor device before shipping the product.

  FIG. 3 shows a configuration example of the brightness level table 8b.

  The luminance level table 8b is composed of the manufacturer name of the TV monitor device 20 connected to this apparatus and the optimum luminance level data corresponding to the manufacturer name. In this example, the optimum luminance level of manufacturer A is +5 with respect to the default value (standard value), the optimum luminance level of manufacturer B is -3 with respect to the default value (standard value), and the optimum luminance level of manufacturer C. Is +2 with respect to the default value (standard value), and the optimum luminance level of manufacturer D is ± 0 with respect to the default value (standard value),. Such an optimal luminance level is determined by actually connecting the TV monitor device of each manufacturer before shipping the product, for example.

  The control circuit 7 uses these tables 8a and 8b to perform switching control of the font size or luminance level of the OSD signal according to the TV monitor device 20 connected to this apparatus. Hereinafter, the OSD font switching control of the OSD signal to be superimposed on the video signal to be output will be specifically described with reference to an example.

  The first embodiment is an embodiment in which the font size of the OSD signal is switched according to the TV monitor device 20 connected to the present apparatus. Therefore, in the first embodiment, the luminance level table 8b is not used. FIG. 4 is a flowchart showing the processing operation of the first embodiment. The first embodiment will be described below with reference to the flowchart shown in FIG.

  For example, the user operates the remote controller 11 to display a menu screen on the TV monitor device 20 (step S11), and sets the OSD font setting item of the TV monitor device 20 connected to the present device from the menu screen. Select (Yes in step S12). As a result, a list of all manufacturer names shown in FIG. 7 is displayed on the screen of the TV monitor device 20 (step S13).

  From this list display, the user designates the manufacturer name of the TV monitor device 20 connected to the present apparatus (step S14). Specifically, a cursor (not shown) on the screen is moved to a desired manufacturer name, and the “OK” key at the lower right of the screen is operated. When the manufacturer name is specified in this way (when it is determined Yes in step S14), the control circuit 7 extracts the font size of the specified manufacturer name from the font size table 8a (step S15), An OSD signal is output with the extracted font size, and OSD display is performed on the TV monitor device 20 (step S16). Specifically, when the designated manufacturer name is, for example, manufacturer A, the OSD display is performed with the font size being 8 × 8, and when the manufacturer name is, for example, manufacturer B, the font size is 16 × 16. When the manufacturer name is, for example, manufacturer C, the OSD display is performed with a font size of 24 × 24.

  In this way, by performing OSD display with an optimal font size set for each manufacturer of the TV monitor device 20 connected to the present device, the characters blur due to the performance difference on the connected TV monitor device 20 side. Crushing and roughness can be reduced.

  The second embodiment is an embodiment in which the luminance level of the OSD signal is switched according to the TV monitor device 20 connected to the present device. Therefore, in the second embodiment, the font size table 8a is not used. FIG. 5 is a flowchart showing the processing operation of the second embodiment. The second embodiment will be described below with reference to the flowchart shown in FIG.

  For example, the user operates the remote controller 11 to display a menu screen on the TV monitor device 20 (step S21), and sets the OSD font setting item of the TV monitor device 20 connected to the present device from the menu screen. Select (Yes in step S22). As a result, a list of all manufacturer names shown in FIG. 7 is displayed on the screen of the TV monitor device 20 (step S23).

  When the user designates the manufacturer name of the TV monitor device 20 connected to the present apparatus from the list display (when it is determined Yes in step S24), the control circuit 7 causes the designated manufacturer. The luminance level of the name is extracted from the luminance level table 8b (step S25), an OSD signal is output at the extracted luminance level, and OSD display is performed on the TV monitor device 20 (step S26). Specifically, when the specified manufacturer name is, for example, manufacturer A, OSD display is performed at a luminance level obtained by adding the luminance level to +5 from the default standard value. When the manufacturer name is, for example, manufacturer B, the luminance is OSD display is performed at a luminance level obtained by subtracting the level from the default standard value by -3. When the manufacturer name is, for example, manufacturer C, OSD display is performed at a luminance level obtained by adding +2 to the default standard value.

  In this way, by performing OSD display at an optimal luminance level set for each manufacturer of the TV monitor device 20 connected to the present apparatus, the character blurs due to the performance difference on the connected TV monitor device 20 side. Crushing and roughness can be reduced.

  In the third embodiment, the font size and the luminance level of the OSD signal are switched according to the TV monitor device 20 connected to the present apparatus. FIG. 6 is a flowchart showing the processing operation of the third embodiment. The third embodiment will be described below with reference to the flowchart shown in FIG.

  For example, the user operates the remote controller 11 to display a menu screen on the TV monitor device 20 (step S31), and sets the OSD font setting item of the TV monitor device 20 connected to the present device from the menu screen. Select (determined Yes in step S32). As a result, a list of all manufacturer names shown in FIG. 7 is displayed on the screen of the TV monitor device 20 (step S33).

  When the user designates the manufacturer name of the TV monitor device 20 connected to the present apparatus from the list display (when it is determined Yes in step S34), the control circuit 7 causes the designated manufacturer. The name font size is extracted from the font size table 8a, the luminance level of the designated manufacturer name is extracted from the luminance level table 8b (step S35), and the OSD signal is output with the extracted font size and luminance level. Then, OSD display is performed on the TV monitor device 20 (step S36). Specifically, when the specified manufacturer name is, for example, manufacturer A, OSD display is performed at a brightness level in which the font size is 8 × 8 and the brightness level is +2 from the default standard value. In the case of B, OSD display is performed at a luminance level in which the font size is 16 × 16 and the luminance level is −3 from the default value. When the manufacturer name is, for example, manufacturer C, the font size is 24 × 24. OSD display is performed at a brightness level obtained by setting the brightness level to +2 from the default standard value.

  As described above, the OSD display is performed with the optimum font size and luminance level set for each manufacturer of the TV monitor device 20 connected to the present device, and therefore, due to the performance difference on the connected TV monitor device 20 side. It can reduce blurring, crushing, and roughness of characters.

  In the first to third embodiments, the user can select any manufacturer from all the manufacturers displayed on the menu screen, thereby specifying the manufacturer of the TV monitor device connected to the apparatus. However, the designation of the manufacturer is not limited to this. For example, the user himself / herself inputs, for example, a manufacturer code into the code input window displayed on the menu screen by operating, for example, a numeric key of the remote controller 11, thereby specifying the manufacturer of the TV monitor device connected to the apparatus. You may comprise as follows. In this case, the manufacturer code to be input to the code input window is described in advance in a list format in a booklet such as a manual, and the user selects a desired manufacturer code from the list and selects the remote controller. 11 Enter the manufacturer code directly.

1 is a block configuration diagram of an optical disc apparatus which is an embodiment of a video signal processing apparatus of the present invention. FIG. It is explanatory drawing which shows the example of 1 structure of a font size table. It is explanatory drawing which shows the example of 1 structure of a luminance level table. 3 is a flowchart illustrating a processing operation according to the first exemplary embodiment. 10 is a flowchart illustrating a processing operation according to the second embodiment. 10 is a flowchart illustrating a processing operation according to the third embodiment. It is explanatory drawing which shows the list display example of all the maker names displayed on the screen of TV monitor apparatus, when an OSD font setting item is selected from a menu screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Optical pick-up 3 Image memory 4 Signal processing circuit 5 DA conversion circuit 6 OSD circuit 7 Control circuit 8 Memory 8a Font size table 8b Luminance level table 9 Operation part 10 Receiving part 11 Remote control 20 TV monitor apparatus

Claims (9)

In a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs it to a display device,
Switching means for switching the font size of the OSD signal and switching the luminance level of the OSD signal;
A font size table in which data of an optimal font size is stored in advance for each manufacturer of the display device connected to the apparatus;
A brightness level table pre-stored with data of optimal brightness levels for each manufacturer of the display device connected to the device;
Designating means for designating the display device connected to the device,
When the user specifies an arbitrary manufacturer from all manufacturers displayed on the menu screen by the specifying unit, the switching unit extracts a font size of the specified manufacturer from the font size table and is specified. A video signal processing apparatus that extracts a luminance level of a manufacturer from the luminance level table and outputs the OSD signal with the extracted font size and luminance level. In a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs it to a display device,
Switching means for switching the font size of the OSD signal;
The video signal processing apparatus, wherein the switching means switches the font size of the OSD signal in accordance with the display device connected to the apparatus. A font size table in which data of an optimal font size is stored in advance for each manufacturer of the display device connected to the apparatus;
Specifying means for specifying the manufacturer of the display device connected to the device,
The switching means extracts a font size of the designated manufacturer from the font size table when the manufacturer of the display device is designated by the designation means by the user, and the OSD signal is extracted with the extracted font size. The video signal processing apparatus according to claim 2, wherein the video signal processing apparatus outputs the video signal processing apparatus. In a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs it to a display device,
Switching means for switching the luminance level of the OSD signal;
The video signal processing device, wherein the switching means switches the luminance level of the OSD signal in accordance with the display device connected to the device. A brightness level table pre-stored with data of optimal brightness levels for each manufacturer of the display device connected to the device;
Specifying means for specifying the manufacturer of the display device connected to the device,
The switching means extracts the brightness level of the designated manufacturer from the brightness level table when the manufacturer of the display device is designated by the user by the designation means, and the OSD signal is extracted with the extracted brightness level. The video signal processing apparatus according to claim 4, wherein the video signal processing apparatus outputs the video signal. In a video signal processing apparatus that superimposes an OSD signal on a video signal and outputs it to a display device,
Switching means for switching the font size of the OSD signal and switching the luminance level of the OSD signal;
The video signal processing apparatus, wherein the switching means switches a font size and a luminance level of the OSD signal in accordance with the display device connected to the apparatus. A font size table in which data of an optimal font size is stored in advance for each manufacturer of the display device connected to the apparatus;
A brightness level table pre-stored with data of optimal brightness levels for each manufacturer of the display device connected to the device;
Specifying means for specifying the manufacturer of the display device connected to the device,
When the manufacturer of the display device is designated by the designation means by the user, the switching means extracts the designated manufacturer's font size from the font size table and sets the designated manufacturer's brightness level to the brightness level of the designated manufacturer. 7. The video signal processing apparatus according to claim 6, wherein the OSD signal is extracted from a luminance level table and the extracted font size and luminance level are output.   6. The video signal processing apparatus according to claim 3, wherein the designation means designates the manufacturer of the display device by the user selecting an arbitrary manufacturer from all manufacturers displayed on the menu screen. 8. The video signal processing apparatus according to claim 3, wherein the specifying means specifies a manufacturer of the display device by inputting a manufacturer code into a code input window displayed on the menu screen.