JP2007043385A - Video signal processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce blur, collapse, or rough of characters of OSD font due to kind of an output terminal only with a very simple processing, by providing a table which takes kind of an output terminal into account in advance. <P>SOLUTION: A memory 8 stores a font size table 8a in which the data of font size optimum for each output terminal of the processor connected to a TV monitor 20 are stored in advance, and an intensity level table 8b in which the data of intensity level optimum are stored in advance for each output terminal of the processor connected to the TV monitor 20. A control circuit 7, if a user designates an arbitrary output terminal from all output terminals displayed on a menu screen using a remote controller 11, extracts the font size of the designated output terminal out of the font size table 8a while extracting intensity level of the designated output terminal out of the intensity level table 8b, to execute OSD display in the extracted font size and/or intensity 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 implements one type of font data of constant size and constant brightness and displays and outputs the font with constant size and constant brightness, the font is output regardless of the setting of the output terminal. Therefore, depending on the type of output terminal to be set, there is a problem that the characters of the font may flicker or bleed out and may become 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 related techniques for displaying the display screen more easily, including such OSD fonts, have been conventionally proposed (see, for example, Patent Documents 1 to 3).

  In the external display adjustment apparatus described in Patent Document 1, when the connection destination for the television monitor for image output is the S terminal, the image quality improvement unit performs only the image quality improvement processing for preventing flicker, and the connection destination for the television monitor is In the case of the composite terminal, the image quality improvement unit further performs band limiting processing, converts the image with the improved image quality into a video signal, and outputs and displays it on the television monitor.

  Further, the video signal recording / reproducing apparatus described in Patent Document 2 externally processes a video signal from the recorded image information to an optimum image corresponding to the connected television and the external output terminal. As the contour information, “aspect ratio” representing the aspect ratio of the video such as “horizontal size” and “vertical size” representing the video format in terms of the number of pixels, 4: 3, 16: 9, etc. ”,“ Progressive flag ”indicating interlaced scanning or progressive scanning,“ display horizontal size ”and“ display vertical size ”indicating the number of pixels in the format where the actual video signal is placed ”, And“ horizontal offset ”and“ vertical offset ”representing the start start point from the upper left of the format in terms of the number of pixels are stored in the management table. As a result, for example, when the screen of the video signal is switched from 1920 × 1080I to 720 × 480I when connected to a 16: 9 wide TV in the automatic mode of the D3 terminal, the screen is displayed as it is. Is converted to external output.

  The digital broadcast receiver described in Patent Document 3 superimposes an NTSC resolution OSD screen on video when an NTSC monitor is connected to the receiver, and high-definition resolution when a high-definition monitor is connected. The OSD screen is superimposed and output.

According to Patent Documents 1 to 3, it is possible to improve the display screen of the television monitor including the OSD font or the like more easily.
Japanese Patent Laid-Open No. 2002-2-4465 JP 2003-209791 A Japanese Patent Laid-Open No. 11-168679

  However, the external display adjustment device described in Patent Document 1 can improve the image quality itself such as flicker prevention and band limitation depending on the type of output terminal, but the OSD font itself can be improved depending on the type of output terminal set. It is not done until the setting is changed. Therefore, even if image quality improvements such as flicker prevention and bandwidth limitation are made, the font level flickering, smearing and squeezing, and conversely the roughness is visible, font level problems Was still left.

  Further, in the video signal recording / reproducing apparatus described in Patent Document 2, it is possible to output a video signal in an optimum image based on a connected television and an external output terminal. In other words, although it is possible to change the outline of the video signal to an optimum outline according to the type of output terminal to be set, the setting of the OSD font itself is changed according to the type of output terminal to be set. It has not been done. For this reason, as in the above-mentioned Patent Document 1, even if the outline is optimal, the font-level visibility, such as the font characters flickering, smearing and being crushed, or conversely appearing rough. The problem was still left.

  Further, in the digital broadcast receiver described in Patent Document 3, it is possible to change the resolution of the entire OSD screen to an optimal resolution according to the type of the connected TV monitor, but depending on the type of output terminal to be set. Thus, the setting of the OSD font itself is not changed. For this reason, as in the above-mentioned Patent Documents 1 and 2, even if the resolution is optimal, the font level flickering, blurring due to blurring, and conversely the roughness may appear. Sex issues remained.

  The present invention was devised to solve such problems. The purpose of the present invention is to provide a font table in consideration of the type of output terminal in advance, so that the OSD according to the type of output terminal can be achieved by a very simple process. An object of the present invention is to provide a video signal processing apparatus capable of reducing bleeding, crushing, and roughness of font characters.

  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. The video signal processing apparatus includes a switching unit that switches a font size of the OSD signal. The font size of the OSD signal is switched in accordance with the type of output terminal of the apparatus to which the display apparatus is connected. More specifically, a font size table preliminarily storing font size data for each type of output terminal of the apparatus to which the display device is connected, and an output terminal of the apparatus to which the display device is connected Designating means for designating the type of the output terminal, and when the type of the output terminal is designated by the user by the designating means, the switching means displays the font size of the designated output terminal in the font size table. The OSD signal is output with the extracted font size. That is, according to the video signal processing device of the present invention, since characters and the like can be displayed with an optimum font size corresponding to the type of output terminal of the device to which the display device is connected, the difference in the types of output terminals Can reduce blurring, crushing, and roughness of characters.

  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 luminance level of the OSD signal is switched according to the type of output terminal of the apparatus to which the display apparatus is connected. More specifically, a luminance level table that stores data of an optimum luminance level for each type of output terminal of the apparatus to which the display device is connected, and an output terminal of the apparatus to which the display device is connected. Specifying means for specifying the type of the output terminal, and when the user designates the type of the output terminal by the specifying means, the switching means displays the brightness level of the designated output terminal in the brightness level table. And the OSD signal is output at the extracted luminance level. That is, according to the video signal processing apparatus of the present invention, since characters and the like can be displayed at an optimum luminance level corresponding to the type of output terminal of the apparatus to which the display apparatus is connected, the difference in the types of output terminals Can reduce blurring, crushing, and roughness of characters.

  The video signal processing apparatus according to 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 switches the font size of the OSD signal and switches the luminance level of the OSD signal. And the switching means switches the font size and the luminance level of the OSD signal according to the type of the output terminal of the apparatus to which the display device is connected. More specifically, a font size table preliminarily storing font size data for each type of output terminal of the apparatus to which the display device is connected, and an output terminal of the apparatus to which the display device is connected A brightness level table preliminarily storing brightness level data for each type, and a designation means for designating the type of the output terminal of the apparatus to which the display device is connected. When the type of the output terminal is specified by the user by the specifying means, the font size of the specified output terminal is extracted from the font size table, and the luminance level of the specified output terminal is extracted from the luminance level table. The OSD signal is output with the extracted font size and luminance level. 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 type of the output terminal of the present apparatus to which the display apparatus is connected, It is possible to reduce blurring, crushing, and roughness of characters due to different types.

  Here, the types of output terminals are at least two types of composite terminals, component terminals, S terminals, and D terminals. Incidentally, the composite terminal is a signal terminal that combines a color signal, a luminance signal, a synchronization signal, and the like, and the component terminal is a signal that transmits the color signal C by dividing it into a BY color difference signal and an RY color difference signal. The S terminal is a Y / C separated video signal terminal. The D terminal is a signal terminal that can connect a component signal and an identification signal that specifies the number of scanning lines, a scanning method, and an aspect ratio with a single cable. EIAJ (Japan Electronics Industry Association) CP- 4120 is a signal terminal for consumer use defined by 4120.

  Further, according to the video signal processing device of the present invention, the designation means may be configured to designate the user by selecting an arbitrary output terminal from all kinds of output terminals displayed on the menu screen. .

  According to the video signal processing apparatus of the present invention, it is possible to display characters or the like with an optimum font size or luminance level or font size and luminance level for each type of output terminal of the apparatus to which the display apparatus is connected. Thus, it is possible to reduce the occurrence of problems such as bleeding, crushing, and roughness of characters due to the difference in the types of output terminals. 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. In addition, the main body of the optical disc apparatus 1 is provided with a main body connecting portion 1a having various output terminals to which the TV monitor device 20 is connected. Here, the output terminal includes at least two types of composite terminals, component terminals, S terminals, and D terminals. However, in this embodiment, all these output terminals are provided.

  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, the memory 8 is connected to the font size table 8a preliminarily storing font size data for each type of output terminal of the apparatus to which the TV monitor apparatus 20 is connected, and the apparatus to which the TV monitor apparatus 20 is connected. A brightness level table 8b that stores data of optimum brightness levels for each type of output terminal is stored.

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

  The font size table 8a is composed of output terminal names of the present apparatus to which the TV monitor device 20 is connected and optimum font size (dot) data corresponding to the output terminal names. In this example, the optimal font size of the composite terminal is 24 × 24, the optimal font size of the S terminal is 16 × 16, the optimal font size of the D terminal is 8 × 8, and the optimal font size of the component terminal is 8 ×. 8. Other terminals have default values. Such an optimal font size is determined, for example, by actually connecting a TV monitor device to each output terminal before product shipment.

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

  The brightness level table 8b is composed of output terminal names of the present apparatus to which the TV monitor device 20 is connected and optimum brightness level data corresponding to the output terminal names. In this example, the optimal luminance level of the composite terminal is the default value −20 (%), the optimal luminance level of the S terminal is the default value +5 (%), the optimal luminance level of the D terminal is the default value +10 (%), The optimum luminance level of the component terminal is a default value +10 (%), and other terminals have default values. Such an optimal luminance level is determined by actually connecting a TV monitor device to each output terminal before product shipment, for example.

  The control circuit 7 uses these tables 8a and 8b to perform switching control of the font size or the luminance level of the OSD signal according to the type of the output terminal of the present apparatus to which the TV monitor apparatus 20 is connected. 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.

  In the first embodiment, the font size of the OSD signal is switched in accordance with the output terminal of the present apparatus to which the TV monitor device 20 is connected. 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). From the menu screen, the OSD font setting of the output terminal of the apparatus to which the TV monitor device 20 is connected is set. An item is selected (Yes in step S12). Thereby, a list of all output terminal 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 output terminal name of the apparatus to which the TV monitor apparatus 20 is connected (step S14). Specifically, a cursor (not shown) on the screen is moved to a desired output terminal name, and the “OK” key at the lower right of the screen is operated. When the output terminal name is designated in this way (when it is determined Yes in step S14), the control circuit 7 extracts the font size of the designated output terminal 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 output terminal name is, for example, a composite terminal, OSD display is performed with a font size of 24 × 24, and when the output terminal name is, for example, an S terminal, the font size is set to 16 OSD display is performed with × 16, and when the output terminal name is, for example, D terminal, the OSD display is performed with a font size of 8 × 8. When the output terminal name is, for example, another terminal, OSD display is performed with the font size as a default value.

  In this way, OSD display is performed with an optimum font size corresponding to the type of output terminal of the present apparatus to which the TV monitor device 20 is connected, thereby reducing blurring, crushing, and roughness of characters due to different types of output terminals. can do.

  In the second embodiment, the luminance level of the OSD signal is switched according to the type of the output terminal of the present apparatus to which the TV monitor device 20 is connected. 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). From the menu screen, the OSD font setting of the output terminal of the apparatus to which the TV monitor device 20 is connected is set. An item is selected (Yes is determined in step S22). Thereby, a list of all output terminal names shown in FIG. 7 is displayed on the screen of the TV monitor device 20 (step S23).

  When the user designates the output terminal name of the present apparatus to which the TV monitor device 20 is connected from the list display (when it is determined Yes in step S24), the control circuit 7 performs the designated output. The luminance level of the terminal 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 designated output terminal is, for example, a composite terminal, OSD display is performed at a brightness level obtained by reducing the brightness level by -20% from the default value, and the output terminal name is, for example, an S terminal. Performs OSD display at a brightness level obtained by raising the brightness level by + 5% from the default value. When the output terminal name is, for example, D terminal, OSD display is performed at a brightness level obtained by raising the brightness level by + 10% from the default value. When the output terminal name is, for example, a component terminal, OSD display is performed at a brightness level obtained by raising the brightness level by + 10% from the default value. When the output terminal name is any other terminal, OSD display is performed with the default luminance level.

  In this way, OSD display is performed at an optimal brightness level corresponding to the type of output terminal of the present apparatus to which the TV monitor device 20 is connected, thereby reducing character bleeding, crushing, and roughness due to the difference in the type of output terminal. can do.

  In the third embodiment, the font size and the luminance level of the OSD signal are switched according to the type of the output terminal of the present apparatus to which the TV monitor device 20 is connected. 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). From the menu screen, the OSD font setting of the output terminal of the present apparatus to which the TV monitor device 20 is connected is set. An item is selected (Yes in step S32). Thereby, a list of all output terminal names shown in FIG. 7 is displayed on the screen of the TV monitor device 20 (step S33).

  When the user designates the output terminal name of the present apparatus to which the TV monitor device 20 is connected from this list display (when it is determined Yes in step S34), the control circuit 7 will perform the designated output. The font size of the terminal name is extracted from the font size table 8a, the luminance level of the designated output terminal 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. The output is performed and OSD display is performed on the TV monitor 20 (step S36). Specifically, when the designated output terminal name is, for example, a composite terminal, OSD display is performed at a luminance level with a font size of 24 × 24 and the luminance level reduced by −20% from the default value, and the output terminal When the name is, for example, an S terminal, OSD display is performed at a luminance level in which the font size is 16 × 16 and the luminance level is increased by + 5% from the default value. When the output terminal name is, for example, a D terminal, When the font size is set to 8 × 8 and the luminance level is increased by 10% from the default value, OSD display is performed. When the output terminal name is, for example, a component terminal, the font size is set to 8 × 8 and the luminance level is set. OSD display is performed at a luminance level increased by + 10% from the default value. When the output terminal name is any other terminal, the OSD display is performed with both the font size and the luminance level as default values.

  In this way, by performing OSD display with the optimum font size and brightness level corresponding to the type of output terminal of the present apparatus to which the TV monitor device 20 is connected, the characters are blurred or crushed due to the difference in the type of output terminal. Roughness can be reduced.

  In the first to third embodiments, the output terminal of the present apparatus to which the TV monitor device 20 is connected is designated by the user selecting an arbitrary manufacturer from all the output terminals displayed on the menu screen. However, the designation of the output terminal is not limited to this.

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 output terminal 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 1a Main body connection part 2 Optical pick-up 3 Image memory 4 Signal processing circuit 5 DA converter circuit 6 OSD circuit 7 Control circuit 8 Memory 8a Font size table 8b Luminance level table 9 Operation part 10 Reception 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 preliminarily storing font size data for each type of output terminal of the apparatus to which the display device is connected;
A brightness level table preliminarily storing data of an optimum brightness level for each type of output terminal of the apparatus to which the display device is connected;
Specifying means for specifying the type of output terminal of the device to which the display device is connected;
The switching means extracts the font size of the designated output terminal from the font size table when the user designates an arbitrary output terminal from the type of output terminal displayed on the menu screen by the designation means. A video signal processing apparatus that extracts a luminance level of a designated output terminal 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 type of output terminal of the apparatus to which the display apparatus is connected. A font size table preliminarily storing font size data for each type of output terminal of the apparatus to which the display device is connected;
Specifying means for specifying the type of output terminal of the device to which the display device is connected;
When the type of the output terminal is designated by the user by the designation means, the switching means extracts the font size of the designated output terminal from the font size table, and the OSD signal with the extracted font size. The video signal processing apparatus according to claim 2, wherein: 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 apparatus characterized in that the switching means switches the luminance level of the OSD signal in accordance with the type of output terminal of the apparatus to which the display apparatus is connected. A brightness level table preliminarily storing data of an optimum brightness level for each type of output terminal of the apparatus to which the display device is connected;
Specifying means for specifying the type of output terminal of the device to which the display device is connected;
When the type of the output terminal is designated by the user by the designation means, the switching means extracts the luminance level of the designated output terminal from the luminance level table, and the OSD signal at the extracted luminance level. The video signal processing apparatus according to claim 4, wherein: 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 characterized in that the switching means switches the font size and luminance level of the OSD signal according to the type of output terminal of the apparatus to which the display apparatus is connected. A font size table preliminarily storing font size data for each type of output terminal of the apparatus to which the display device is connected;
A brightness level table preliminarily storing data of an optimum brightness level for each type of output terminal of the apparatus to which the display device is connected;
Specifying means for specifying the type of output terminal of the device to which the display device is connected;
The switching means extracts the font size of the designated output terminal from the font size table when the type of the output terminal is designated by the user by the designation means, and the brightness level of the designated output terminal. 7. The video signal processing apparatus according to claim 6, wherein the OSD signal is extracted from the luminance level table and the OSD signal is output with the extracted font size and luminance level.   8. The video signal processing apparatus according to claim 2, wherein there are at least two types of the output terminals of a composite terminal, a component terminal, an S terminal, and a D terminal. 6. The video signal processing apparatus according to claim 3, wherein the designation means designates the user by selecting an arbitrary output terminal from all kinds of output terminals displayed on the menu screen.