JPH076210A - Picture display device - Google Patents

Abstract

PURPOSE:To obtain the picture display device with a message function whose operation is easy and easily understood. CONSTITUTION:An input medium 1 detects sequentially coordinates onto which a pen is in contact and gives the result to an area discrimination circuit 2 and a processing circuit 4. The area discrimination circuit 2 discriminates to which area among plural areas on the input medium set in advance the coordinate value given from the input medium 1 belongs and gives codes for an operation content allocated in advance, a function and its operation to a control circuit 3. The control circuit 3 controls the operation of the picture display device according to the code detected by the area discrimination circuit 2. The processing circuit 4 applies processing to convert the coordinate value given from the input medium 1 into a signal form to be displayed on the picture display device and the result is displayed on a display section 8.

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 such as a television equipped with a tablet (hereinafter referred to as TV).

[0002]

2. Description of the Related Art FIG. 15 is a block circuit diagram showing an example of a conventional image display device. In the figure, 24 is an operation panel, 3 is a control circuit, 5 is a tuner, 7 is a video signal processing circuit, and 8 is a display section.

Next, the operation will be described. Operation panel 2
4 is provided with operation buttons necessary for operating the image display device. When the operation button provided on the operation panel 24 is operated, the operation content is transmitted to the control circuit 3. The control circuit 3 controls the tuner 5, the video signal processing circuit 7, and the display unit 8 so as to realize the state assigned to the operation button. The tuner 5 selects a broadcasting station according to a control signal supplied from the control circuit 3, extracts a video signal, and supplies the video signal to the video signal processing circuit 7. The video signal processing circuit 7 separates the video signal into a luminance signal, a carrier color signal, and a synchronization signal, and further demodulates the carrier color signal into RY and BY color difference signals to obtain a luminance signal and an RY signal. , From the BY signal to R,
Processing such as conversion into G and B primary color signals is performed. Further, after performing processing such as separating the sync signal into a horizontal sync signal and a vertical sync signal, the R, G, and B primary color signals, the horizontal sync signal, and the vertical sync signal are supplied to the display unit 8. Display 8
Is a phosphor of R, G, B by deflecting an R, G, B electron beam to which a signal based on R, G, B primary color signals is supplied by a signal based on a horizontal synchronizing signal and a vertical synchronizing signal. An image is displayed on the tube surface of the picture tube by scanning the phosphor screen applied in the form of fine dots. Here, as an example of the display unit 8, C
Although the RT has been described as an example, the display unit operates on the principle of operation of each of the LCD and the plasma display, and similarly displays an image based on a video signal.

The operation of selecting the channel of the image displayed on the display surface will be briefly described. By selecting and operating one of the channel buttons indicated by the numbers 1 to 12 provided on the operation panel 1, the control circuit 3 outputs a control signal to the tuner 5 so as to select the selected channel. Supply to. The tuner 5 tunes to the selected channel, extracts the video signal of that channel, and supplies it to the video signal processing circuit 7.

The operation of adjusting the image quality of the image displayed on the display surface will be briefly described. Use the image quality item selection buttons provided on the operation panel 1 to select which image quality item to adjust, such as brightness, contrast, color depth, and tint, and then select the level amount of the level variable volume. By setting, the control circuit 3 supplies the control signal to the video signal processing circuit 7 so as to obtain the adjusted image quality. The video signal processing circuit 7 is controlled so as to perform processing for adjusting the selected image quality item in the amplitude and DC level of the luminance signal, the amplitude and color phase of the color signal, etc. by the set amount of level. To be done.

[0006]

The conventional image display device is used for displaying a TV program transmitted from a broadcasting station, or for displaying an external input signal from a VTR, an LD, a game machine, or the like. It was used only for homes, but has no other uses at other times, and is often installed in a prominent place in the home, but it only occupies a prime location in the home. There was a problem like that.

The present invention has been made in order to solve the above problems, and when a TV program or an external input signal is not displayed, a display unit or the like constituting the TV is used to provide a display function or the like. The purpose is to make effective use.

[0008]

According to another aspect of the present invention, there is provided an image display device comprising: a plane input medium provided with coordinate detecting means for sequentially detecting coordinate values at which the writing means is located in accordance with a writing operation; The control means controls the operation of the display unit by the control signal based on the value, or the processing means for performing the video signal processing on the image formed based on the coordinate value.

According to another aspect of the image display device of the present invention, a plane input medium having coordinate detecting means for sequentially detecting the coordinate values of the writing means according to the writing operation, and a control signal based on the coordinate values. The control means for controlling the operation of the display section, or the processing means for performing the video signal processing on the image formed based on the coordinate value, and the display means for displaying the image based on the coordinate value are provided.

An image display apparatus according to a third aspect of the present invention is a plane input medium provided with coordinate detecting means for sequentially detecting coordinate values at which the writing means is located according to a writing operation, and a control signal based on the coordinate values. The control means for controlling the operation of the display section, or the processing means for performing the video signal processing on the image configured based on the coordinate value, and the image storage means for storing the image are provided.

An image display apparatus according to a fourth aspect of the present invention is a plane input medium having coordinate detecting means for sequentially detecting the coordinate values of the writing means in accordance with the writing operation, and a control signal based on the coordinate values. A control means for controlling the operation of the display section or a processing means for performing a video signal process on an image formed based on coordinate values, and a superposing means for superposing the image based on the coordinate values on a separately input video signal. It is equipped with.

An image display apparatus according to a fifth aspect of the present invention is a plane input medium having coordinate detecting means for sequentially detecting the coordinate values at which the writing means is located according to the writing operation, and a control signal based on the coordinate values. A control means for controlling the operation of the display section or a processing means for performing a video signal process on an image formed based on coordinate values, and a superposing means for superposing the image based on the coordinate values on a separately input video signal. When,
The storage means is provided for storing the video signal in the range designated by the writing trajectory.

An image display apparatus according to a sixth aspect of the present invention is a plane input medium having coordinate detection means for sequentially detecting the coordinate values at which the writing means is located in accordance with the writing operation, and a control signal based on the coordinate values. And a character extracting means for extracting character data from the coordinate value series, and a control means for controlling the operation of the display section or a processing means for performing video signal processing on an image formed based on coordinate values, Comparison for comparing the feature quantity output from the feature extractor with the feature quantity stored in the storage means, the feature extracting means for extracting the quantity, the storage means for storing the feature quantities for a plurality of characters, and the feature quantity output from the feature extracting means. And means for recognizing the characters written on the input medium based on the comparison result.

An image display apparatus according to a seventh aspect of the present invention is a plane input medium provided with coordinate detecting means for sequentially detecting the coordinate values at which the writing means is located according to the writing operation, and a control signal based on the coordinate values. A control means for controlling the operation of the display section, or a processing means for performing video signal processing on an image formed based on coordinate values, and a means for switching the operation of the control means or the processing means. is there.

According to another aspect of the invention, there is provided an image display device including a plane input medium having coordinate detecting means for sequentially detecting coordinate values at which the writing means is positioned according to a writing operation, and a control signal based on the coordinate values. The control means for controlling the operation of the display section by means of, or the processing means for performing the video signal processing on the image configured based on the coordinate value, the input processing section is independent from the main body, and the transmission means for the main body is provided. It is a thing.

According to a ninth aspect of the present invention, an image display device includes a plane input medium having coordinate detecting means for sequentially detecting the coordinate values at which the writing means is located according to the writing operation, and a control signal based on the coordinate values. Is provided with a control means for controlling the operation of the display section or a processing means for performing video signal processing on an image formed based on coordinate values, and the input medium is independent of the main body and detected from the input medium to the main body. The transmission means for sequentially transmitting the coordinate values is provided.

The image display device according to the invention of claim 10 is
A plane input medium provided with a coordinate detecting means for sequentially detecting the coordinate values where the writing means is located according to the writing operation, and a control means for controlling the operation of the display unit by a control signal based on the coordinate values, or the coordinate values. A processing unit for performing video signal processing on an image formed based on the image processing unit; and an image storage unit for storing the image, and a voice input unit for capturing a voice,
The audio signal processing means for processing the audio signal and the audio signal storage means for storing the audio signal are provided.

[0018]

According to the image display device of the present invention, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the image display device is controlled by a control signal based on the coordinate values. The state is controlled, or video signals are processed and displayed using an image constructed based on coordinate values.

The image display device according to the invention of claim 2 is
The coordinate values at which the writing means is positioned with respect to the plane input medium are sequentially detected according to the writing operation, the writing locus is displayed on the display medium for confirmation, and the operation of the image display device is controlled by the control signal based on the coordinate values. The image is processed and displayed by controlling or using an image constructed based on coordinate values.

The image display device according to the invention of claim 3 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. The video signal processing is performed using an image, the image is stored in the image memory, and the image is read and written as necessary.

An image display device according to a fourth aspect of the invention is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. The image signal is processed by using the image, and this image is superimposed on the separately input image signal.

The image display device according to the invention of claim 5 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. The image signal is processed using the image, the image based on the coordinate value is superimposed on the separately input image signal, and the image signal in the range designated by the writing trajectory is stored.

The image display device according to the invention of claim 6 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. Video signal processing is performed using images, character data is extracted from the coordinate value series, feature quantities are extracted from the character data, and the extracted feature quantities are compared with previously stored feature quantities for multiple characters. Then, the character written on the input medium is recognized based on the comparison result and the operation of the display unit is controlled, or the recognized character is displayed.

The image display device according to the invention of claim 7 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. Image signals are used to perform video signal processing, and the control operation or processing operation is switched according to the usage mode of the planar input medium.

The image display device according to the invention of claim 8 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. The image signal is processed using the image, and the input processing unit is configured to be independent of the main body and transmits the input information to the main body.

The image display device according to the invention of claim 9 is
The coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display unit is controlled by a control signal based on the coordinate values, or the coordinate values are configured based on the coordinate values. The image signal is processed using an image, and the input medium is independent of the main body, and the coordinate values detected from the input medium are sequentially transmitted to the main body.

According to the tenth aspect of the invention, the image display device sequentially detects the coordinate values of the writing means with respect to the plane input medium in accordance with the writing operation, and operates the display section by a control signal based on the coordinate values. Control, or perform video signal processing using an image configured based on coordinate values, store this image in the image memory, read and write as needed, and also capture audio and process audio signals. However, the audio signal is stored and read and written simultaneously with the image.

[0028]

【Example】

Example 1. FIG. 1 is a block circuit diagram showing an image display device according to an embodiment of the present invention. In FIG.
The same reference numerals as those in FIG. 15 indicate the same parts, and the description thereof will be omitted. 1 is an input medium, 2 is a region determination circuit, 3
Is a control circuit, 4 is a processing circuit, 5 is a tuner, 6 is a switching circuit, 7 is a video signal processing circuit, and 8 is a display unit.

Next, the operation will be described. The operation of the common part with FIG. 15 is the same as the operation of the conventional example shown in FIG. 15, and therefore the description of the operation is omitted here. Input medium 1
Is a tablet that detects the coordinate position of a writing action by a rod-shaped object (hereinafter referred to as a pen) that can perform a writing action similar to a pen, or a touch panel, or a flat plate-shaped coordinate input device called a digitizer. . Here, the means for performing the writing operation is not limited to the rod-shaped one that enables the writing operation with the same feeling as a pen, and may be a finger or the like. The principle of detecting the coordinate position of such an input medium includes, for example, a resistance pressure sensing method, an electrostatic capacitance method, an electromagnetic induction method, an electromagnetic transfer action method, and the like. Depending on the principle of detecting this writing action, the structure of pen and tablet, input accuracy, power consumption, price, etc. differ, whether it is wireless or wired, transparent or opaque,
There are differences such as pressure detection and contact detection (proximity detection),
A coordinate input device based on any principle may be used.

The input medium 1 is sequentially detected by the writing operation with a pen (depending on the principle of coordinate detection, it may be pressed or non-contact, but for the sake of simplicity, simply referred to as contact), and the detected coordinate values are sequentially detected by the area determination circuit 2. At the same time as it is supplied, it is supplied to the processing circuit 4. The coordinate value may be detected at a constant cycle, or may be detected each time an event occurs. In the case of a fixed period, it may be set to a fixed period, but it may be configured so that it can be changed according to the usage of the input medium. When detecting each time an event occurs, the coordinates of a point at which input by the pen changes, for example, the point at which the writing locus is curved, are detected. When the input medium 1 can detect coordinates with an accuracy of 256 points in the horizontal direction and 256 points in the vertical direction, for example, the horizontal coordinates are X (X = 0 to 255) and the vertical coordinates are Y.
The coordinate value (X, Y) is supplied to the area determination circuit 2 and the processing circuit 4 as (Y = 0 to 255). The area determination circuit 2 determines which of the plurality of areas on the input medium the coordinate value supplied from the input medium 1 belongs to, and sets the plurality of areas on the input medium. The codes of the operation contents, functions, operations, etc. assigned at the stage are supplied to the control circuit 3. The processing circuit 4 processes the writing locus based on the coordinate values supplied from the input medium 1 so as to form a video signal form that can be displayed on the display unit, and supplies it to the switching circuit 6. The tuner 5 selects a broadcasting station according to the control signal supplied from the control circuit 3 and extracts a video signal and supplies it to the switching circuit 6. The switching circuit 6 selects either the output signal of the processing circuit 4 or the output signal of the tuner 5 and supplies it to the video signal processing circuit 7.

FIG. 2 shows an example of the input surface of the input medium displaying the input guidance when the channel selection, which is the basic operation of the TV, is performed using the coordinate input device. When the input surface of the input medium 1 is opaque, the input guide is printed on a sheet having a material and a thickness that does not hinder the detection of coordinates, and this sheet is used by being stacked on the input surface. When the input surface of the input medium 1 is transparent, the input guide is printed on a sheet of a material that does not hinder the detection of coordinates, and this sheet is laid below the transparent input surface.
Alternatively, an image display device such as a CRT, LCD or EL may be laid under the transparent input surface. In FIG. 2, for example, the input surface is 1
With an accuracy of 024 × 1024 and the origin at the lower left, the coordinates of the four corners of the “1” area are: lower left corner: (X1, Y1) = (100,700) upper left corner: (X1, Y2) = ( 100,923) Lower right corner: (X2, Y1) = (251,700) Upper right corner: (X2, Y2) = (251,923). The coordinates of the four corners of the “2” area are as follows: Lower left corner: (X1, Y1) = (324,700) Upper left corner: (X1, Y2) = (324,923) Lower right corner: (X2, Y1) = (475 700) Upper right corner: (X2, Y2) = (475,923). The coordinates of the four corners of the “3” area are as follows: lower left corner: (X1, Y1) = (548,700) upper left corner: (X1, Y2) = (548,923) lower right corner: (X2, Y1) = (669, 700) Upper right corner: (X2, Y2) = (669,923). The coordinates of the four corners of the “4” area are as follows: lower left corner: (X1, Y1) = (772,700) upper left corner: (X1, Y2) = (772,923) lower right corner: (X2, Y1) = (923,923) 700) Upper right corner: (X2, Y2) = (923,923). The coordinates of the four corners of the “5” area are as follows: lower left corner: (X1, Y1) = (100,400) upper left corner: (X1, Y2) = (100,623) lower right corner: (X2, Y1) = (251, 400) Upper right corner: (X2, Y2) = (251,623). The coordinates of the four corners of the “6” area are as follows: lower left corner: (X1, Y1) = (324,400) upper left corner: (X1, Y2) = (324,623) lower right corner: (X2, Y1) = (475 400) Upper right corner: (X2, Y2) = (475,623). The coordinates of the four corners of the “7” area are as follows: lower left corner: (X1, Y1) = (548,400) upper left corner: (X1, Y2) = (548,623) lower right corner: (X2, Y1) = (669, 400) Upper right corner: (X2, Y2) = (669,623). The coordinates of the four corners of the “8” area are as follows: lower left corner: (X1, Y1) = (772,400) upper left corner: (X1, Y2) = (772,623) lower right corner: (X2, Y1) = (923,923) 400) Upper right corner: (X2, Y2) = (923,623). The coordinates of the four corners of the “9” area are as follows: lower left corner: (X1, Y1) = (100,100) upper left corner: (X1, Y2) = (100,323) lower right corner: (X2, Y1) = (251, 100) Upper right corner: (X2, Y2) = (251,323). The coordinates of the four corners of the “10” area are as follows: lower left corner: (X1, Y1) = (324,100) upper left corner: (X1, Y2) = (324,323) lower right corner: (X2, Y1) = (475 100) Upper right corner: (X2, Y2) = (475,323). The coordinates of the four corners of the “11” area are as follows: lower left corner: (X1, Y1) = (548,100) upper left corner: (X1, Y2) = (548,323) lower right corner: (X2, Y1) = (669, 100) Upper right corner: (X2, Y2) = (669,323). The coordinates of the four corners of the "12" area are as follows: lower left corner: (X1, Y1) = (772,100) upper left corner: (X1, Y2) = (772,323) lower right corner: (X2, Y1) = (923, 100) Upper right corner: (X2, Y2) = (923,323).

Here, when a predetermined area on the input surface as shown in FIG. 2 is contacted, the input medium 1 detects the coordinate value at that time and supplies it to the area judging circuit 2. The area judgment circuit 2
Determines that the function assigned to the area of the range indicated by the conditional expression that results in the calculation result is true is selected by sequentially executing the operation of the conditional expression indicating the range of each area.
The operation of the area determination circuit 2 when the input surface is as shown in FIG. 2 will be described with reference to FIG. The coordinates are input from the input medium 1 to obtain (X, Y) (201). When X is 100 or more and 251 or less and Y is 100 or more and 323 or less (20
2) Select the "1" area (214). Otherwise, when X is 324 or more and 475 or less and Y is 100 or more and 323 or less (203), the "2" area is selected (215). Otherwise, X is 548 or higher 69
When 9 or less and Y is 100 or more and 323 or less (2
04), "3" area is selected (216). Otherwise, X is 772 or more and 923 or less, and Y is 100.
When the number is 323 or more (205), the "4" area is selected (217). Otherwise, X is 100 or more 2
When it is 51 or less and Y is 400 or more and 623 or less (206), the "5" area is selected (218). Otherwise, X is 324 or more and 475 or less, and Y is 4
When it is between 00 and 623 (207), the "6" area is selected (219). Otherwise, when X is 548 or more and 699 or less and Y is 400 or more and 623 or less (208), the "7" area is selected (220). Otherwise, when X is 772 or more and 923 or less and Y is 400 or more and 623 or less (209), the "8" area is selected (221). Otherwise, X is 100
When it is 251 or more and Y is 700 or more and 923 or less (210), the "9" area is selected (222). Otherwise, X is 324 or more and 475 or less, and Y
Is 700 or more and 923 or less (211), "10"
A region is selected (223). Otherwise, X is 5
When Y is 48 or more and 699 or less and Y is 700 or more and 923 or less (212), the “11” area is selected (22
4). Otherwise, when X is 772 or more and 923 or less and Y is 700 or more and 923 or less (21
3), "12" area is selected (225). Otherwise, it waits for input on the input medium 1. If there is a corresponding area on the way, the selected area is output (226).

Here, for example, when the user wants to select channel "6", when the user touches the reproduction area of the input surface of the input medium 1 with the pen, the input medium 1 causes the coordinate value of the point touched by the pen, for example, (400). , 500) is supplied to the area determination circuit 2. The area determination circuit 2 operates according to the above procedure. Now X =
At 400, 324 ≦ X ≦ 475 is satisfied, and at Y = 500, 400 ≦ Y ≦ 623 is satisfied. Therefore, it is determined whether (324 ≦ X ≦ 475) AND (400 ≦ Y ≦ 623) is satisfied. A code indicating that the area "6" has been selected as being true in step 207 of the flowchart is supplied to the control circuit 3. The control circuit 3 supplies a signal for selecting channel 6 to the tuner, and the tuner extracts the video signal of channel 6 and supplies it to the switching circuit 6. Here, the operation in the case of selecting channel 6 has been described, but in the case of other channels, the channel desired by the user can be selected by the same procedure as in the case of channel 6.

FIG. 4 shows an example of the input surface of the input medium when the function of a memo pad is obtained using the coordinate input device. Input medium 1
The coordinate values supplied from are supplied as coordinates with an accuracy of 1024 × 1024, with the input surface at the lower left of the origin, for example. The processing circuit 4 performs a process of converting the coordinate value supplied from the input medium 1 into a signal form for displaying on the display unit, and supplies it to the switching circuit 6. For example, like an NTSC standard signal, frame frequency: about 30 [Hz], field frequency: about 60 [Hz], number of scanning lines: 525,
Description will be made assuming that an output signal from the writing image output terminal 8 is input to an image display device having an aspect ratio of 4: 3 capable of displaying a 2: 1 interlaced scanning signal and displayed. The number of scanning lines is 5 pixels required for display on the image display device.
Since the number of pixels is 25, the effective pixel length is 480 vertical considering the portion actually visible on the screen excluding the vertical blanking period.
Since the pixel has an aspect ratio of 4: 3, consider the case of 640 horizontal pixels. Horizontal coordinate of input medium 1: X
(X = 0 to 1023), vertical coordinate: Y (Y = 0 to 1
023), the horizontal coordinate of the image display device: x (x
= 0 to 639), vertical coordinate: y (y = 0 to 479)
Then, the horizontal coordinate: x of the image display device is x = (639/1023) · X The vertical coordinate: y of the image display device is converted from y = (479/1023) · Y The following are rounded off to the coordinates (x, y) of the image display device. 640x480 obtained here
Image is scanned as an effective image area to form a video signal for displaying the image on the image display device.

The input medium 1 sequentially supplies the coordinates of the contact of the pen to the processing circuit 7 at a constant cycle, and at the same time, supplies the pen-up and pen-down information. Alternatively, each time the input by the pen is changed, the coordinates of the change point, for example, the point at which the writing locus is bent are sequentially supplied, and at the same time, the information of pen up and pen down is also supplied. In the pen-up state, coordinate information is not supplied because the pen is not in contact with the display surface. Therefore, the entire image display device is displayed with a predetermined background color (for example, black). The coordinates obtained at the same time as the pen-down information are converted into coordinates corresponding to the display unit, and only the pixel concerned is displayed on the display unit in a display color (for example, white) different from the background color. When the pen-down information is obtained after the pen-up information is obtained immediately before, only that pixel is displayed. When the pen-down information is obtained subsequently to the pen-down information, all the pixels existing at the position connecting the currently displayed pixel and the previously displayed pixel are displayed in the display color. The operation of connecting pixels is performed by primary interpolation, secondary interpolation, or the like. If the video signal to be supplied to the image display device is formed according to such a rule,
If a writing operation such as a character or a drawing operation such as a figure is performed on the input surface of the input medium 1, the writing or drawing process is performed almost at the same time as if the writing or drawing was performed on the display surface of the image display device. Is displayed in.

The operation of the processing circuit 7 when the input surface is as shown in FIG. 4 will be described with reference to FIG. The coordinates (X, Y) input from the input medium 1 are obtained (301). The pen information input at the same time is obtained (302). If the current pen information is not pen down (303), that is, if it is pen up, the process is stopped (310) until the next coordinate and pen information is input. When the current pen information is pen down (303), the coordinates of the input surface are converted into the coordinates of the display surface (304). When the stored pen information input one time before the pen information input this time is pen down (3
05), an image interpolated so as to display between the coordinates input this time and the stored coordinates input one time before is formed on the image memory (306). If the stored pen information input one time before the pen information input this time is not pen down (305), that is, if it is pen up, the image displaying the coordinates input this time is displayed in the image memory. Form (307). The coordinates input this time are stored for the next processing (308). The pen information input this time is stored for the next processing (309). It returns to the beginning of the process and waits for the next coordinate input and pen information input.

At the same time as processing the coordinates supplied from the input medium 1 by the processing procedure described with reference to FIG. 5 above, independently of the above processing, 306 in the flowchart of FIG.
If the image formed in the image memory in step 1 or step 307 is input to an image display device to which an NTSC standard signal is input, for example, a frame frequency: about 30 [Hz], a field frequency: about 60 [ H
z], the number of scanning lines: 525, the signals written in the image memory are read so as to be a 2: 1 interlaced scan, and the signals are supplied to the switching circuit after being processed so as to become the standard signals of the NTSC system. .

Further, it has been explained that only the pixel obtained by converting the coordinate point at which the contact detected by the writing operation or the drawing operation is detected and the interpolated pixel are displayed in the display color different from the background color. It is also possible to make the writing locus by the writing operation or the drawing operation a predetermined thickness by simultaneously displaying a predetermined number of pixels positioned in a square shape in all directions. Further, it may be set in advance to a predetermined thickness, but it is also possible to provide some thickness options so that the user can select the thickness according to the purpose of use and the like at the time of use. Good.

In addition, the background color is, for example, black and the display color is, for example, white in order to display the coordinate points obtained by the writing operation or the drawing operation. However, the predetermined color is used instead of the processing of only the luminance signal. It is also possible to perform display with a predetermined display color and a predetermined background color by being configured to also perform color signal processing for chroma encoding from the RGB signals distributed to each. The display color and background color may be set in advance, but some color options are provided so that the user can select the color according to the purpose of use. May be.

Further, although the background color and the display color have been described as different colors in order to convert and display the coordinate points obtained by the writing operation or the drawing operation, the writing color is already different from the background color. When a motion or drawing operation is performed (this state corresponds to a writing operation with a "pencil"), the writing or drawing operation is performed in the same display color as the background color, so that the writing or drawing operation is performed. It is possible to obtain a function corresponding to "eraser" for erasing the writing locus by the pixel group displayed by. In addition, the user may select whether the writing operation or the drawing operation is performed as “pencil” or “eraser” according to the purpose of use and the like at the time of use. Also, the size of the erased area (the size of the "eraser") can be set to a predetermined size in the same way as the thickness of the "pencil" above, or some size options can be provided to allow the user to May be configured to be selected according to the purpose of use and the like at the time of use.

In the above embodiment, the signal input to the image display device is the NTSC signal, but P
If the processing is performed in the same manner regardless of the AL method, SECAM method, or any method, the same operation is performed and the same effect is obtained. Although the aspect ratio is 4: 3, the aspect ratio may be 16: 9 or any aspect ratio. Also, although the number of scanning lines is 525, the number of scanning lines is 625 or 1125.
The same applies to 1050 lines, 1250 lines, and any number of scanning lines. Further, although the description has been made with respect to the 2: 1 interlace, the same applies to non-interlace type and any scanning type.

Example 2. FIG. 6 is a block circuit diagram showing an image display device according to an embodiment of the present invention. In FIG. 6, the same reference numerals as those in FIG. Reference numeral 9 is a display medium for confirmation.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The processing circuit 4 sequentially processes the coordinate values supplied from the input medium 1 to form an image and supplies the image to the switching circuit 6 and at the same time to the confirmation display medium 9. The confirmation display medium 9 is, for example, L
It is configured by using a CD, an EL, a PDP, a CRT or the like for the display unit.

The size and shape of the display surface of the confirmation display medium 9 are the same as the size and shape of the input surface of the input medium 1.
The shapes are set to the same shape, and the input surface of the input medium 1 and the display surface of the image display device are arranged so as to be exactly overlapped with each other. As a result, the writing locus drawn or drawn by the pen on the input surface of the input medium 1 is sequentially displayed on the confirmation display medium 9 in accordance with the writing operation, and actually the coordinates are supplied from the input medium 1 to the processing circuit 4 for confirmation. Even though the signal is displayed on the display medium 9 in the form of a signal, the writing operation can be performed as if the user were actually writing on paper with a pencil.

When the writing operation is performed on the input surface of the input medium, if the switching circuit 6 is controlled to select the output signal of the processing circuit 4, the same writing locus is displayed on the display unit 8 and the confirmation display medium 9. Is displayed, but the display unit 8 is independent of the input medium, and it is difficult to recognize the writing operation on the input surface and the displayed writing trajectory as corresponding ones. Therefore, by providing the confirmation display medium 9 corresponding to the input surface, the writing operation can be performed while confirming the writing locus at the time of writing.

When the switching circuit 6 is controlled to select the output signal of the tuner 5 when a writing operation is performed on the input surface of the input medium, the display unit 8 displays the program selected by the tuner 5. Since it is displayed, it is not possible to confirm on the display unit 8 what kind of trace is being written on the input medium 1, but it is possible to confirm because the trace written on the input medium 1 is displayed on the confirmation display medium 9.

Example 3. FIG. 7 is a block circuit diagram showing an image display device according to an embodiment of the present invention. In FIG. 7, the same symbols as those in FIG. Reference numeral 10 is a memory circuit.

Next, the operation will be described. The operation in common with FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, and the description of the operation is omitted here. The processing circuit 4 sequentially processes the coordinate values supplied from the input medium 1 to form an image, and supplies it to the switching circuit 6 as a signal corresponding to the display processing system of the image display device. Formed from the coordinate values by operating the image storage button (not shown) by the user or by contacting the image storage area provided in a part of the input medium 1 and the area determination circuit 2 determining that the image storage is selected. The created image is written in the memory circuit 10. In addition, the storage circuit 10 is operated by a user operating an image restoration button (not shown) or by contacting an image restoration area provided on a part of the input medium 1 and the area determination circuit 2 determines that the image restoration is selected. The stored image is read from. When the storage circuit 10 has a capacity capable of storing a plurality of images, a number for specifying which of the plurality of images may be designated when requesting image storage or image restoration.

For example, the usage pattern of the above embodiment will be described by taking the memo function as an example. The user writes a message on the input medium 1. Looking at the image displayed on the display unit, the image in which the message of the content desired to be written is written in the storage circuit 9 by operating the image storage button or the like. Next, when viewing the stored message, the image is read from the storage circuit 9 and displayed on the display unit 8 by operating the image return button or the like.

For example, if it is set so that the stored message is displayed every time the power of the TV is turned on, the TV is set.
You can make sure you see the message whenever you want to use. This message is, for example, a message that calls attention to a child when he or she watches TV too much, or a message at the time of returning home.

Example 4. FIG. 8 is a block circuit diagram showing an image display device according to an embodiment of the present invention. In FIG. 8, the same symbols as those in FIG. Reference numeral 11 is a combining circuit.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The processing circuit 4 sequentially processes the coordinate values supplied from the input medium 1 to form an image, forms an image signal, and supplies the image signal to the synthesizing circuit 11. Further, the output signal from the processing circuit 4 is output in synchronization with the video signal input from the tuner 5 by a frame synchronizer or the like. The synthesizing circuit 11 supplies the video signal processing circuit 7 with a video signal in which a pixel corresponding to a handwriting locus displayed from, for example, white formed from coordinate values is replaced with a background pixel with the video signal supplied from the tuner 5 as a background. To do.

This state is displayed as if writing on the TV image. Instead of the output signal of the tuner 5, an external input such as a VTR reproduction signal is combined with the synthesis circuit 11
If it is configured to be supplied to an input medium on a TV image, for example, when explaining a specific object in a video including a plurality of objects on a presentation software image in a presentation or the like. Since the writing locus on one input surface can be superimposed, it is possible to efficiently explain the specific object by performing an instruction operation such as enclosing the specific object with a circle. In this case, a switching circuit for switching whether or not the writing trajectory is superimposed on the video signal may be provided.

Example 5. FIG. 9 is a block circuit diagram showing an image display device according to an embodiment of the present invention. In FIG. 9, the same reference numerals as those in FIG. Reference numeral 11 is a synthesis circuit, and 12 is an image storage circuit.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The output signal from the processing circuit 4 is supplied to the synthesizing circuit 11 in synchronization with the video signal output from the tuner 5 by a frame synchronizer or the like. The synthesizing circuit 11 superimposes a handwriting locus image formed from the coordinate values supplied from the processing circuit 4 on the video signal supplied from the tuner 5, and supplies it to the video signal processing circuit 7. The video signal processing circuit 7 detects the closed loop formed by the writing locus and stores only the image portion surrounded by the closed loop in the image storage circuit 12.
Further, the image portion is read out from the image storage circuit 12 and superimposed on an arbitrary position of the input video signal.

A case where a predetermined image portion of a video signal is stored will be described. When there is an image portion to be captured in the video signal output from the tuner 5, the input medium 1 is checked while checking the image displayed on the display unit 8 so that the trajectory surrounds the periphery of the image portion to be captured. Write while touching the input surface of. If it can be confirmed that the periphery of the image portion to be captured is confirmed, the operation button or the like for storing the image is operated. When an operation button or the like for storing an image is operated, the video signal processing circuit 7 stores the image portion to be captured in the image storage circuit 12. When viewing the captured image portion, the operation button or the like for reading the image is operated. The video signal processing circuit 7 reads the image previously fetched from the image storage circuit 12, and displays on the display unit 8 an image in which the captured image portion is superimposed on the image supplied from the synthesizing circuit 11 at that time.

A configuration is adopted in which an externally input video signal is supplied to the synthesis circuit 11 instead of the video signal output from the tuner 5, and the video signal is output to the outside from the middle of the video signal processing circuit 7. With this, it is possible to improve the editing work of the video tape, for example. An example will be described in which a predetermined image portion of a certain video signal is edited by superimposing an image of another video signal as a background image. The video signal having the image portion to be captured is supplied to the synthesizing circuit 11, and while checking the image displayed on the display unit 8 so as to form a locus surrounding the periphery of the image portion to be captured, the input medium 1 is checked. Write while touching the input surface. If it can be confirmed that the periphery of the image portion to be captured is confirmed, the operation button or the like for storing the image is operated. When an operation button or the like for storing an image is operated, the video signal processing circuit 7 stores the image portion to be captured in the image storage circuit 12. Next, a video signal having a background image on which this image portion is to be superimposed is supplied to the synthesizing circuit 10, and the writing trajectory from the input medium 1 is passed through without passing and is supplied to the video signal processing circuit 7. When superimposing the captured image portion on the background image, an operation button or the like for reading the image is operated. The video signal processing circuit 7 reads out the previously captured image from the image storage circuit 12, outputs the image in which the captured image portion is superimposed on the background image to the outside, and records it on the video tape.

Example 6. FIG. 10 is a block circuit diagram showing an image display device according to an embodiment of the present invention.
In FIG. 10, the same reference numerals as 1 denote the same parts, and the description thereof will be omitted. 13 is a character extraction circuit, 1
Reference numeral 4 is a feature extraction circuit, 15 is a comparison circuit, 16 is a character dictionary storage circuit, 17 is an identification circuit, and 18 is an interpretation circuit.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The character extraction circuit 13 sequentially takes in coordinate values included in the range set as the region of the entry frame from the coordinate value series sequentially supplied from the input medium 1 and supplies them to the feature extraction circuit 14 as a coordinate value series for one character. Supply. Here, the coordinate value series for one character is the coordinate value series included in the area range of one entry frame, but the coordinate value when the pen-up state is changed to the pen-down state is included in the entry frame area. If so, even if the subsequent input coordinate values are out of the range of the entry frame, it may be determined as a series of coordinate value series for one character. Feature extraction circuit 1
Reference numeral 4 extracts the feature amount of the coordinate value group and supplies it to the comparison circuit 15.

The feature extraction circuit 14 makes the n-th stroke and the n + 1 stroke so that even if the written character is a character having a plurality of strokes, it becomes a continuous writing trajectory as if it were written with one stroke.
Interpolate between the strokes of the stroke of the stroke. That is, even if pen-up and pen-down are performed in the middle of the coordinate value series for one character, the coordinate value series is treated as one coordinate value series without being divided. Next, the sample points are reset so that the number of sample points forming the writing locus is constant for all input characters. The re-sampling of the sample points is performed by calculating the total length of the writing trajectories by summing the distances between the sampling points, and dividing the writing trajectory length by a predetermined number of sampling points to obtain the average distance between the sampling points. Then, sample points for each average distance are sequentially calculated from the starting point of the writing locus, and the sampled points are resampled to obtain a coordinate value series. Next, considering the input plane as a complex plane, the vector between each sample point is divided by the average distance to obtain only the phase component. The comparison circuit 1 uses the transform coefficient obtained by performing the discrete Fourier transform of this phase component as the feature of the written character.
Supply to 5. All of these conversion coefficients may be used as the feature amount for the recognition operation, but the calculation time may be shortened by excluding the higher-order components as long as the recognition rate is not reduced.

The character dictionary storage circuit 16 is a storage circuit corresponding to a dictionary in which the feature amount of each character is stored in advance, and is searched in order from the comparison circuit. The feature amount of each character is extracted and stored in advance in the same procedure as the feature extracting operation of the feature extracting circuit 14. The comparison circuit 15 sequentially compares the characteristic amount of the input character with the characteristic amount of each character stored in the character dictionary storage circuit 16, and the characteristic amount and the character dictionary input from the characteristic extraction circuit 14 are compared. The distances from the characteristic amount of each character stored in the storage circuit 16 are sequentially obtained and supplied to the identification circuit 17. Identification circuit 1
Reference numeral 7 determines the character in the character dictionary storage circuit 16 having the shortest distance between the feature quantities as a recognized character and supplies it to the processing circuit 4 and at the same time supplies it to the interpretation circuit 18. The processing circuit 4 processes the recognized characters into a video signal that can be displayed on the display unit 8 and supplies the processed video signals to the switching circuit 6. The interpretation circuit 18 interprets the meaning of a word composed of a plurality of recognized characters, and supplies the control circuit 3 with a code representing the action indicated by the word. With this configuration, the image display device can be controlled by inputting handwritten characters, or a message message can be created by using print characters obtained by recognizing the handwritten characters.

In the above-mentioned embodiment, the character recognition method using the Fourier transform for extracting the feature amount has been described as an example. However, the character recognition method is not limited to the character recognition method used in the online character recognition, and the offline character recognition is used. Any of the character recognition methods may be used, such as the phase structuring method used in 1., the pattern matching method, or the like.

Example 7. FIG. 11 is a block circuit diagram showing an image display device according to an embodiment of the present invention.
In FIG. 11, the same reference numerals as 1 denote the same parts, and the description thereof will be omitted. Reference numeral 19 is a mode changeover switch.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The mode changeover switch 19 changes the basic operation control of the TV, changes the purpose of use of an input medium such as a memo pad, changes the input guidance display, and operates the area determination circuit 2 so as to operate according to each purpose of use. Or the operation of the processing circuit 4 is changed.

When performing the basic operation control of the TV, for example, a sheet on which input guidance as shown in FIG. 2 is printed is used.
When used as a memo pad or the like, for example, a sheet as shown in FIG. 4 is used. As described above, a sheet on which a plurality of input guides are printed or a sheet on which nothing is printed is exchanged and used according to the use of the input medium. The input medium is
These multiple sheets should be below the input surface for transparent input media and above the input surface for opaque input media.
It has a structure in which the positional relationship with the input surface is kept constant and a plurality of sheets can be exchanged. In this case, detection holes or detection grooves for detecting the purpose of use of the input medium from each sheet are provided at different positions for each sheet, or different numbers are provided for each sheet, and the detection holes, or This detection hole (detection groove) is equipped with a mechanism for detecting the difference in the position of the detection groove or the difference in the number.
By inserting the attached sheet into the input medium, the same operation as the operation of the mode changeover switch may be performed.

Example 8. FIG. 12 is a block circuit diagram showing an image display device according to an embodiment of the present invention.
In FIG. 12, the same symbols as those in FIG. 20 is an image storage circuit,
Reference numeral 21 is a switching circuit, 22 is a transmitting circuit, and 23 is a receiving circuit.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. The image storage circuit 20 uses the coordinate values supplied from the input medium 1 as they are.
Alternatively, it is converted into a predetermined format and stored. The switching circuit 21 is supplied with the area setting item information output from the area determination circuit 2 and the image information output from the image storage circuit 20, selects a signal to be output according to the purpose of use of the input medium, and selects the transmission circuit. 22. The transmission circuit 22 modulates the area setting item information or the image information supplied from the switching circuit 21 into a form suitable for the transmission system and transmits the modulated information.
The receiving circuit 23 demodulates the received signal, extracts area setting item information or image information, and supplies the area setting item information to the control circuit 3 and the image information to the processing circuit 4.
As for the transmission form, whether it is a form in which it is transmitted to the main body via a cable or a space is transmitted to the main body by infrared rays, radio waves, etc. Any form of transmission may be used.

The portion for transmitting infrared rays, radio waves, etc. is
For example, as long as the transmission circuit 22 is attached to the input medium 1, the input medium 1 is not limited to one place, but may be provided at a plurality of places to facilitate reception by the main body. For example, they may be provided at the four corners of a rectangular input medium, or a large number may be arranged on the end face facing the main body.

The information to be transmitted may be coordinate values, a control signal for finally controlling the image display device, or a video signal. Further, even in the state of the process of converting the coordinate value and the final form information such as the control signal and the video signal, it is configured to transmit the information of the state that reduces the power consumption of the input portion independent from the main body. Needless to say, this is preferable because it has the effect of reducing the capacity of the battery built in the input section and prolonging the life of the battery during actual use. For example, if the recognition portion is on the main body side, it is not necessary to have a circuit for recognition at the input portion, so that power consumption can be reduced accordingly. Also,
If the amount of transmission can be reduced by performing a recognition operation to some extent to extract simple features and transmitting them to the main body side, power consumption can be reduced accordingly.

Example 9. FIG. 13 is a block circuit diagram showing an image display device according to an embodiment of the present invention.
In FIG. 13, the same reference numerals as those in FIG. 22 is a transmission circuit, 23
Is a receiving circuit.

Next, the operation will be described. The operation of the parts common to FIG. 1 is the same as the operation of the first embodiment shown in FIG. 1, so the description of the operation is omitted here. Transmission circuit 22
Modulates the coordinate values supplied from the input medium into a form suitable for the transmission method and transmits the modulated form. The reception circuit 23 demodulates the received signal, extracts the coordinate value, and supplies the coordinate value to the area determination circuit 2 and the processing circuit 4.

The coordinate value transmitted in the above embodiment may be configured to transmit the absolute coordinate, or may be configured to transmit the absolute coordinate only once first and thereafter transmit the relative coordinate. Is also good.

Although the video signal output from the tuner 5 has been described as an example of the video signal input in the embodiments 1 to 9, the input video signal is particularly limited to the video signal output from the tuner 5. Instead of this, for example, a video signal output from a VTR or LD input to an external input terminal may be used.

In the first to ninth embodiments, the operation of the video signal recording / reproducing unit is controlled by the area judging circuit, the processing circuit, the control circuit, the character extracting circuit, the characteristic extracting circuit, the comparing circuit, the character dictionary storing circuit, the identifying circuit and the like. Although the example of the configuration for generating the signal to be described has been described, even if the configuration is such that a single or a plurality of microcomputers perform similar operations by software processing,
Similar effects are obtained. Further, the character dictionary storage circuit may be composed of an independent storage element such as a ROM, or may be composed of a storage element such as a ROM incorporated in the microcomputer IC.

Example 10. FIG. 14 is a block circuit diagram showing a sound processing portion of an image display device according to an embodiment of the present invention. The image processing part has the same configuration as that in FIG. 7, and the description thereof will be omitted. In FIG.
Reference numeral 25 is a microphone, 26 is an audio signal processing circuit, 27 is an audio signal storage circuit, and 28 is a speaker.

Next, the operation will be described. The microphone 25 converts voice into an electric signal and supplies it to the voice signal processing circuit 26. The audio signal processing circuit 26 compresses an audio signal and writes it in the audio signal storage circuit 27, for example. Here, the audio signal storage circuit 27 may allocate a part of the storage circuit 10 described for storing the image in FIG. 7 for the audio signal. Further, the audio signal processing circuit 26 reads the audio signal from the audio signal storage circuit 27, restores the audio signal, for example, and supplies it to the speaker 28. The speaker 28 converts the voice signal into voice caused by air vibration and outputs it.

For example, the usage pattern of the above embodiment will be described by taking the memo function as an example. The user writes a message on the input medium 1. Looking at the image displayed on the display unit, the image in which the message of the content desired to be written is written in the storage circuit 9 by operating the image storage button or the like. If you want to add a voice message to this image message, operate the voice memory start button etc. and speak the message into the microphone 25.
The voice signal end button is operated to end the voice signal storage. When the stored message is viewed, the image is read from the storage circuit 9 and displayed on the display unit 8 by operating the image return button or the like, and at the same time, a voice message is output from the speaker.

[0078]

As described above, according to the first aspect of the present invention, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the control signal based on the coordinate values is detected. To control the state of the image display device,
Alternatively, since it is configured to display and perform video signal processing using an image configured based on coordinate values, only the operation buttons necessary for performing the desired operation are displayed and used, so the operation is easy to understand. At the same time, it is possible to obtain an electronic memo pad by sharing the input medium.

According to the invention of claim 2, the coordinate values at which the writing means is positioned with respect to the plane input medium are sequentially detected according to the writing operation, and the writing locus is displayed on the display medium for confirmation. Since the operation of the image display device is controlled by the control signal based on the coordinate value or the image signal processing is performed by using the image configured based on the coordinate value and the image is displayed, an instruction to the input medium or This has the effect of being able to confirm the position and trajectory of actions such as writing.

According to the third aspect of the present invention, the coordinate values of the writing means with respect to the plane input medium are sequentially detected according to the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Since this image is stored in the image memory and read / written as necessary, there is an effect that an electronic notepad capable of accumulating a plurality of messages can be obtained.

According to the invention of claim 4, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Since this image is configured to be superimposed on the video signal that is separately input, there is an effect that the presentation described by pointing to a specific portion of the video becomes easy to understand.

Further, according to the invention of claim 5, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Since the image based on the coordinate values is superimposed on the separately input video signal and the video signal in the range specified by the writing trajectory is stored, only the necessary image portion is stored and the memory capacity is reduced. There is an effect that can be effectively used.

Further, according to the invention of claim 6, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Character data is extracted from the coordinate value series, the characteristic amount is extracted from the character data, the extracted characteristic amount is compared with the characteristic amounts of a plurality of characters stored in advance, and the input medium is filled in based on the comparison result. Since it is configured to recognize the displayed characters and control the operation of the above display unit or display the recognized characters, even if the selection area corresponding to many operation buttons is not provided, the word corresponding to the operation is input. There is an effect that the operation can be controlled or a message message in print can be obtained only by providing a frame and filling in.

Further, according to the invention of claim 7, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Since the control operation or the processing operation is switched according to the usage mode of the flat input medium, there is an effect that the expensive flat input medium is shared for a plurality of purposes and the usage efficiency of the flat input medium is improved.

According to the invention of claim 8, the coordinate value of the writing means with respect to the plane input medium is sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate value. Control, or perform video signal processing using images configured based on coordinate values,
Since the input processing unit is configured to be independent of the main body and to transmit the input information to the main body, there is an effect that the place for inputting to the planar input medium is not restricted.

Further, according to the invention of claim 9, the coordinate values of the writing means with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the operation of the display section is performed by the control signal based on the coordinate values. Control, or perform video signal processing using images configured based on coordinate values,
Since the input medium is independent of the main body and the coordinate values detected from the input medium are sequentially transmitted to the main body, there is an effect that the power consumed by the input medium can be reduced.

Further, in the image display device according to the invention of claim 10, the coordinate values at which the writing means is positioned with respect to the plane input medium are sequentially detected in accordance with the writing operation, and the display unit is caused by a control signal based on the coordinate values. Control the operation of, or perform video signal processing using the image configured based on the coordinate value, store this image in the image memory and read and write as needed, and also capture the voice, voice signal Since it is configured so that the voice signal is processed and the voice signal is stored and read and written simultaneously with the image, the voice can be simultaneously added to the electronic memo pad capable of accumulating a plurality of messages.

[Brief description of drawings]

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

FIG. 2 is an input side view of an input medium for explaining the operation of the image display device according to the first embodiment of the invention.

FIG. 3 is a flow chart for explaining the operation of the area judgment circuit of the image display device according to the embodiment of the present invention.

FIG. 4 is an input side view of an input medium for explaining the operation of the image display device according to the first embodiment of the invention.

FIG. 5 is a flow chart for explaining the operation of the processing circuit of the image display device according to the embodiment of the present invention.

FIG. 6 is a block circuit diagram showing an image display device according to an embodiment of the present invention.

FIG. 7 is a block circuit diagram showing an image display device according to an embodiment of the invention of claim 3;

FIG. 8 is a block circuit diagram showing an image display device according to an embodiment of the present invention.

FIG. 9 is a block circuit diagram showing an image display device according to an embodiment of the present invention.

FIG. 10 is a block circuit diagram showing an image display device according to an embodiment of the invention of claim 6;

FIG. 11 is a block circuit diagram showing an image display device according to an embodiment of the invention of claim 7;

FIG. 12 is a block circuit diagram showing an image display device according to an embodiment of the present invention.

FIG. 13 is a block circuit diagram showing an image display device according to an embodiment of the present invention.

FIG. 14 is a block circuit diagram showing an audio processing portion of an image display device according to an embodiment of the invention of claim 10;

FIG. 15 is a block circuit diagram showing an example of a conventional image display device.

[Explanation of symbols]

 1 Input Medium 2 Area Judgment Circuit 3 Control Circuit 4 Processing Circuit 5 Tuner 6 Switching Circuit 7 Video Signal Processing Circuit 8 Display 9 Confirmation Display Medium 10 Storage Circuit 11 Synthesis Circuit 12, 20 Image Storage Circuit 13 Character Extraction Circuit 14 Feature Extraction Circuit 15 Comparison circuit 16 Character dictionary storage circuit 17 Discrimination circuit 18 Interpretation circuit 19 Mode changeover switch 21 Switching circuit 22 Transmission circuit 23 Reception circuit 24 Operation panel 25 Microphone 26 Voice signal processing circuit 27 Voice signal storage circuit 28 Speaker

Claims (10)

[Claims] 1. A plane input medium provided with a coordinate detecting means for sequentially detecting coordinate values at which the writing means is located according to a writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. Alternatively, the image display device is provided with processing means for performing video signal processing on an image formed based on coordinate values. 2. A plane input medium having a coordinate detecting means for sequentially detecting the coordinate values of the writing means in accordance with the writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device comprising input confirmation display means for displaying a writing trajectory on a planar input medium on a display surface corresponding to the input surface in a one-to-one correspondence. 3. A plane input medium having a coordinate detecting means for sequentially detecting coordinate values where the writing means is located according to the writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device comprising an image storage means for storing the image. 4. A plane input medium having a coordinate detecting means for sequentially detecting coordinate values where the writing means is located according to a writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device comprising: a superimposing unit that superimposes an image based on coordinate values on a separately input video signal. 5. A plane input medium provided with a coordinate detecting means for sequentially detecting coordinate values at which the writing means is located in accordance with the writing operation, and control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device comprising: a superimposing unit that superimposes an image based on coordinate values on a separately input video signal; and a storage unit that stores a video signal in a range designated by a writing trajectory. 6. A plane input medium provided with a coordinate detecting means for sequentially detecting coordinate values at which the writing means is located in accordance with a writing operation, and control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
A character extracting means for extracting character data from the coordinate value series,
Feature extraction means for extracting feature quantities from character data, storage means for storing feature quantities of a plurality of characters, feature quantity output from the feature extraction means, and feature quantities stored in the storage means An image display device comprising: a comparing unit for comparing the characters and a recognizing unit for recognizing a character written on the input medium based on the comparison result. 7. A plane input medium provided with a coordinate detecting means for sequentially detecting coordinate values at which the writing means is located in accordance with the writing operation, and control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device comprising means for switching the operation of the control means or the processing means. 8. A plane input medium having a coordinate detecting means for sequentially detecting the coordinate values of the writing means in accordance with the writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device, characterized in that an input processing unit is configured to be independent of the main body, and is provided with a transmission unit for the main body. 9. A plane input medium having coordinate detection means for sequentially detecting coordinate values at which the writing means is located according to the writing operation, and control means for controlling the operation of the display section by a control signal based on the coordinate values. , Or a processing means for performing video signal processing on an image formed based on coordinate values,
An image display device, characterized in that the input medium is independent of the main body, and is provided with transmission means for sequentially transmitting coordinate values detected from the input medium to the main body. 10. A plane input medium having a coordinate detecting means for sequentially detecting coordinate values where the writing means is located in accordance with a writing operation, and a control means for controlling the operation of the display section by a control signal based on the coordinate values. Alternatively, a processing means for performing video signal processing on an image formed based on coordinate values, an image storage means for storing the image, a voice input means for capturing a voice, and a voice signal processing means for processing the voice signal. An image display device comprising a voice signal storage unit for storing a voice signal.