JP2001306052A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device, capable of preventing persistence of a display screen and also capable of performing useful display for a user by displaying the handling operating method of the device, instead of a screen saver which prevents the persistence of the screen due to the display of a still image. SOLUTION: This device is an image display device, which displays a moving image and a still image on a screen 14a of a television with a display means 6 by receiving a video signal and is provided with a memory 17, in which character data which are used for the purpose of displaying the handling operating method of the device on the screen 14a in instruction sentences or the like are stored and a control means 18, which when the means 6 continues to display the still image on the screen 14a for a time equal to or longer than a fixed time, reads out character data from the memory 17 and transmits the data to the display means 6 to make the means 6 display the instruction manual of the device on the screen 14a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device having a function of preventing burn-in when a still image is continuously displayed on a monitor screen, and more particularly, to a display which is meaningful to a user instead of displaying a still image. The present invention relates to an image display device that performs display.

[0002]

2. Description of the Related Art If a user forgets how to operate a device or loses an instruction manual, subsequent operations may not be possible.
As an example of an apparatus for solving this problem, an on-screen display apparatus is known (Japanese Patent Laid-Open No. 9-1306).
No. 95). This means is to shift to the help mode by pressing a predetermined button of the remote control hand unit, and by pressing any button of the remote control hand unit in this help mode,
Function explanation means for displaying the explanation of the function of the pressed button on the image display means. In this on-screen display device, when the user presses a menu button on the remote control hand unit, the remote control main body and operation buttons are displayed on the screen (screen surface) of the CRT, and the mode transits to the help mode. Then, in this help mode, when an arbitrary operation button is pressed, the button displayed on the screen corresponding to the pressed button blinks or changes its display color, for example. At the same time as this display, the function description of the operation button is displayed on-screen on the screen. Therefore, even if the instruction manual is lost or not at hand, the operation method can be easily understood.

[0003]

By the way, the above-mentioned conventional on-screen display device has convenience when operating a remote controller. However, when a still image is displayed on a screen, an instruction manual or the like is displayed. It does not have a structure to display characters. Normally, in a display device of this type, a personal computer, or the like, when a still image is displayed for a long time, a screen burn-in occurs. Therefore, a distorted image is displayed by a screen saver function. However, such a distorted image is a display of the same pattern that has no meaning, and thus has a drawback that the user spends unnecessarily.

The present invention has been made in view of the above-mentioned problems, and displays a handling operation method of the apparatus in place of a screen saver for preventing a screen burn-in due to display of a still image to prevent the burn-in. It is an object of the present invention to provide an image display device capable of performing a meaningful display for a user.

[0005]

According to one aspect of the present invention, there is provided an image display apparatus for displaying a moving image and a still image on a monitor screen in response to a video signal. In the device, a memory storing character data for displaying a handling operation method of the device as an explanatory note or the like on the screen, and when the display unit continues to display a still image on the screen for a predetermined time or more, a character is read from the memory. And control means for reading out the data, transmitting the data to the display means, and displaying an instruction manual of the apparatus on the screen. According to a second aspect of the present invention, when the control unit controls the display of the explanatory note, it displays one page corresponding to one page on one screen. Also, in the invention according to claim 3, the control means includes:
When the display of the explanatory note is controlled, the explanation is scroll-displayed on the screen. Further, the invention according to claim 4 is characterized in that, when the control means displays the explanatory note after the display of the still image and then displays the moving image and then displays the still image again for a predetermined time or more, Is controlled to display the continuation of the explanatory text displayed in. Further, in the invention according to claim 5, the memory stores character data such as a description relating to the function and handling of the monitor in correspondence with the menu item, and the menu item is displayed on the screen for a predetermined time or more. In this case, the control means reads the character data relating to the menu item from the memory and displays an instruction.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of the image display device according to the present invention. This image display device includes a television receiver (television) and an MPEG2 (Moving Picture Experts Group Ph.
DVD (D) which is a disc-type recording medium conforming to ase2)
The present invention is applied to a DVD combo in which a DVD player for reproducing recorded information of the digital video disc is integrated. In FIG. 1, reference numeral 1 denotes the DVD, which is rotationally driven by a drive system (not shown). Reference numeral 2 denotes a reading unit including an optical pickup, and reference numeral 3 denotes a demultiplexing unit that separates a compressed video data bucket and a compressed audio data bucket from the compressed video and audio data read by the reading unit 2.

A decompression unit 4 decodes the compressed video data bucket and the compressed audio data bucket separated by the demultiplexing unit 3 and decompresses them to the original video and audio. The reading unit 2, the separating unit 3, and the decompressing unit 4 are configured by a general decoder IC. Reference numeral 5 denotes an audio output unit which sends out the audio data expanded by the expansion unit 4 from the switching circuit 11 to the pair of stereo speakers 13 to emit sound. Reference numeral 6 denotes a video output unit,
The video data expanded by the expansion unit 4 is transmitted from the switching circuit 12 to the television 14 side, and converted into an NTSC or PAL color television signal for display on the screen 14a (see FIG. 2) and output.

Reference numeral 7 denotes a television tuner.
The signal of the channel selected by the tuning command signal is supplied to the Y / C / A separation circuit 8. An audio signal processing circuit 9 and a video signal processing circuit 10 are connected to the Y / C / A separation circuit 8. The Y / C / A separation circuit 8 separates an input signal from the tuner 7 and converts the audio signal (A) into an audio signal processing circuit 9
And a composite signal including a luminance signal (Y) of the video signal, a carrier signal (C), a synchronization signal, and the like, is transmitted to the video signal processing circuit 10 side. Note that a video signal including a synchronization signal is also supplied from the video signal processing circuit 10 to the control unit 18 side. The audio signal processing circuit 9
A stereo IC is used, the output is connected to the switching circuit 11, and an audio signal is sent to a stereo speaker 13.

The video signal processing circuit 10 comprises a chroma IC, and includes a color signal output circuit, a sync separation circuit, and the like. The output of the video signal processing circuit 10 is the switching circuit 1
2 while being connected to the CRT 14 via a deflection circuit (not shown). The color signal output circuit amplifies the three primary color signals of R, G, and B generated by matrixing the luminance signal (Y) and the color difference signal, and
The power is supplied to the cathode of T14. In addition,
The switching circuits 11 and 12 are composed of switches.
Output signals of the control unit 18 are respectively guided, and output signals of the respective circuit units are output to the speaker 13 according to the selection command signal.
Alternatively, it is sent to the CRT 14 side. Reference numeral 15 denotes a remote controller (remote controller), and various operation keys for operating a television and a DVD player are arranged in a key input unit thereof. Reference numeral 16 denotes a receiving unit,
And transmits a transmission signal to the control unit 18 side. Reference numeral 17 denotes an RO constituting the control unit 18.
M.

The control unit 18 includes a CPU, a ROM, and a RAM.
And one-way or two-way connection depending on the function of each circuit of the television and DVD player. In addition, a control program is stored in a memory (ROM), character data for displaying a handling operation method of the DVD combo in a predetermined area in a description or the like on a screen 14a, and a description of functions and handling of the DVD combo. Character data for displaying a sentence or the like is stored as character data. This character data includes Japanese, English and other foreign languages and various signatures. The control unit 8 controls the operation of the entire television in accordance with the key operation of the remote controller 15, and controls the operation of the drive system of the DVD player, the read unit 2, the demultiplexing unit 3, the decompressing unit 4, and the like. Screen 14 of the CRT 14
a, a video of a television broadcast is displayed, or a moving image read from the DVD 1 is displayed. Further, when a still image is continuously displayed on the screen 14a for a certain period of time during the display of the moving image,
Character data is read from the memory 17 and OSD (ON S
CREEN DISPLAY) signal to the video output unit 6 side,
The configuration is such that the instruction of the DVD combo is displayed on the screen 14a.

Next, the operation of the DVD combo will be described. When the user wants to watch a broadcast program on a television, the user turns on the power key with the key input unit of the remote controller 15 and then selects and operates the channel key. When this operation signal is received by the receiving unit 16, the control unit 10 outputs a switching command signal to the television receiving side to the switching circuits 11 and 12, and sends a selection command signal to the tuner 7, Since the received signal of the broadcasting station selected by the tuner 7 is sent to the Y / C / A separation circuit 8, each output signal of the audio signal processing circuit 9 and the video signal processing circuit 10 is transmitted to the switching circuits 11 and 12. Is done. Then, the switching circuit 1
1 supplies a sound signal to the speaker 13 side, while a switching circuit 12 supplies a video signal to the CRT 14 side.
Therefore, sound is emitted from the speaker 13 and the CRT 14
Is displayed on the screen 14a, so that the user can listen to the broadcast program of the selected channel.

Next, when the user wants to view the DVD, after setting the DVD 1 and operating the reproduction key with the key input unit of the remote controller 15, the control unit 18
A command signal for switching to the DVD player is output to 1 and 12. The control unit 18 starts the operation of the drive system and sends a read start command to the read unit 2. When the recording information of the track is read by the optical pickup of the reading unit 2 as the DVD 1 rotates,
The compressed video / audio data is sent to the separation unit 3. The demultiplexing unit 3 receives the compressed video and audio data, separates the compressed video and audio data buckets from each other, and transmits them to the decompression unit 4.

The decompression unit 4 decodes the compressed video data bucket and the compressed audio data bucket and decompresses them to the original video / audio, and sends the audio data to the audio output unit 5 and the video data to the video output unit 6, respectively. I do. The audio data of the audio output unit 5 is supplied to the speaker 13 via the switching circuit 11, and the video data of the video output unit 6 is
The signal is sent to the CRT 14 via the switching circuit 12. As a result, the reproduced video is displayed as a moving image on the screen 14 a of the CRT 14, and the sound is emitted from the speaker 13. When the user operates the pause key with the remote controller 15 during such reproduction, the control unit 18 stops the reproduction operation in response to the operation. As a result, a still image is displayed on the screen 14a of the CRT 14. At this point, the control unit 18
Starts the time counting by the built-in timer, and when the display is continued for a predetermined time or more, the memory 1
7, the character data of the explanatory note is read out and sent to the video output unit 6, and the character data is replaced with the CRT 14
Supply to the side.

For this reason, as shown in FIG. 2, a description of the operation method is displayed on the screen 14a under the title "DVD Combo Operation Method Description". At this time, the control unit 18
The description is displayed one page at a time on a single screen at a speed that is easy for the user to read. Therefore, meaningful information is provided to the user, and burn-in of the screen 14a is prevented as in the conventional screen saver. The control unit 18 stores the displayed page data in the RAM each time such display is performed. Then, display control of the explanatory note is performed in accordance with the above-described operations such as reproduction, pause, and restart. That is, after displaying the description of the operation method after the still image is displayed, the control unit 18 displays the explanatory note previously displayed when the still image is displayed for a certain period of time after the moving image is displayed by starting the reproduction. Display the continuation of the sentence page.
Therefore, the same description is not repeatedly displayed after the reproduction of the moving image.

Further, such display control is not limited to the case where one page is sequentially displayed on one screen, but is also the same when the control unit 18 scrolls and displays. In the scroll display, the controller 18 controls the memory 1 during the suspension period.
The character data is read out from the screen 7, and after the "DVD combo operation description" is displayed, the "each line" of the description is displayed so as to be sent from the bottom to the top of the screen 14a. Then, when the reproduction of the moving image is restarted, the character data already displayed at that time is stored in the RAM. Thereafter, when the explanatory text is displayed by a pause, the character data slightly before the "line" stored in the RAM is read out and sequentially displayed on the screen 14a. Thus, the user can understand the next description while recalling the previous description.

When the user wants to view the menu of the DVD combo, the user operates the menu with the key input unit of the remote controller 15 and the control unit 18 outputs to the switching circuits 11 and 12 a command signal for switching to the DVD player side. . Then, the control unit 18 reads the character data of the menu from the memory 17 and sends it to the video output unit 6 to display various menus on the screen 14a as in a general television. When this menu is displayed, for example, as shown in FIG. 3, after the user selects and operates the item of “Description of operation method of DVD combo”, control may be performed without performing the next operation. The unit 18 displays the title for a certain period of time or more, reads character data relating to the menu item from the memory 17, and sends the character data to the video output unit 6.

For this reason, as shown in FIG. 2, on the screen 14a, an explanation of the operation method is sequentially displayed following the title of "DVD Combo Operation Method Description". Therefore, the user can automatically view the contents of the item selected by himself without performing key operations one after another. In the above-described embodiment, the image display device is a television-integrated D-type.
Although an example in which the present invention is applied to a VD combo has been described, it is needless to say that the present invention can be widely applied to a personal computer and other image display devices having a display screen.

[0018]

As described above, according to the first aspect of the present invention, when a still image is continuously displayed on a television screen for a certain period of time or more, an instruction for handling the apparatus is displayed on this screen. Since the display is performed, the screen burn-in can be prevented as in the case of the conventional screen saver, and the display that is meaningful to the user can be performed. Also,
According to the second aspect of the present invention, when the display of the explanatory note is controlled,
Since one page is displayed correspondingly on one screen, there is an advantage that the user can easily understand the operation method and the like of the apparatus. Further, the invention according to claim 3 has an advantage that the user can sequentially understand the operation method of the device or the like because the explanation is scroll-displayed on the screen when display control is performed. Further, according to the invention described in claim 4, when a still image is displayed again for a predetermined time or more after the moving image is displayed, the continuation of the description sentence displayed before is displayed. There is an advantage that the user does not get tired of seeing the sentence repeatedly. In addition, according to the invention described in claim 5, when a menu item is displayed on the screen for a certain period of time or more, an instruction manual for the menu item is displayed. There are advantages that can be easily understood.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of an image display device according to an embodiment of the present invention.

FIG. 2 is an exemplary diagram of an operation explanatory sentence displayed on a screen.

FIG. 3 is a view showing an example of menu items displayed on a screen.

[Explanation of symbols]

 6 display means 14a screen 17 memory 18 control means

Claims (5)

[Claims] 1. An image display device in which a display means displays a moving image and a still image on a screen of a monitor in response to a video signal, wherein character data for displaying a handling operation method of the device as an explanation on the screen is stored. A memory, and control means for reading character data from the memory and sending it to the display means when the display means continues to display a still image on the screen for a fixed time or more, and displaying an instruction manual of the apparatus on the screen. An image display device comprising: 2. The image display apparatus according to claim 1, wherein when the control unit controls the display of the explanatory text, the control means displays one page corresponding to one screen. 3. The image display apparatus according to claim 1, wherein when the control unit controls the display of the explanatory note, the control unit causes a scroll display on the screen. 4. When the control means displays the explanatory note after the display of the still image, and when the still image is displayed for a predetermined time or more after displaying the moving image, the explanatory note previously displayed is displayed. 4. The image display device according to claim 1, wherein control is performed to display a continuation of the image. 5. The memory stores character data such as a description relating to the function and handling of the monitor in correspondence with menu items, and when the menu items are displayed on the screen for a predetermined time or longer, the control is performed. 2. The image display device according to claim 1, wherein the means reads out character data relating to the menu item from the memory and displays an instruction.