JPH075986A - Information processor - Google Patents

Abstract

PURPOSE:To display a prescribed write information by magnified projection without interfering the field of view. CONSTITUTION:An input area surface is provided on a two-dimensional plane and an input means 2 for selectively indicating point coordinates to the input area surface and inputting coordinate information and a display means 3 for generating picture data based on the coordinate information inputted to the input means 2 and magnified-projecting the picture data on a display part 4 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device,
In particular, it relates to an information processing device for enlarging and projecting input information.

BACKGROUND OF THE INVENTION In recent years, the importance of visually appealing presentations has increased, and visual presentations have been required in various places such as conferences and recitals, and at such conferences and recitals. There is a demand for an information medium capable of obtaining a large display area.

[0003]

2. Description of the Related Art Conventionally, as an information medium capable of obtaining such a large display area, there is, for example, a front projection type information medium in which a projector and a screen are separated from each other. As an information medium, mainly overhead projectors (hereinafter, OHP: Over Head Projector)
Is widely used for conferences and education.

When the OHP is technically classified, it can be said that it is a single-panel front projection display device.

In the OHP, a cell film having characters and figures written thereon is placed on an original placing table composed of a Fresnel lens and a glass plate, or characters are directly written on the cell film placed on the original placing table in advance. The image forming section of the single plate is configured by writing the cell film, and the cell film is transmitted by irradiating light to the document mounting table from the light source installed under the document mounting table on which the cell film is mounted. The image is projected forward by reflecting from a mirror arranged at a predetermined angle above the document table.

A screen is provided in front of the OHP in advance, and an image reflected by the mirror and projected forward is formed on the screen and displayed as an image.

[0007]

However, in the above-described OHP, the mirror is arranged above the document placing table, so that the mirror provides a field of view to a person who looks at the screen from the rear of the OHP. There was the problem of hindering it.

When placing a cell film on which characters or figures are written, if the cell film is placed in the up, down, left, right direction or on the wrong side, the characters and figures written on the cell film will be correct on the screen. Not displayed,
There was a problem that the expected display image could not be obtained.

By the way, recently, the operability is good,
As a pointing device advantageous for space saving,
For example, ATM (Automatic Teller's M) in banks, etc.
A touch panel used for an achine) has become widespread in the market, and by replacing the cell film in the above-mentioned OHP with a liquid crystal panel and a touch panel, it can become an advanced information medium.

However, in this case, in the structure in which only the liquid crystal panel is provided instead of the cell film on the document table,
The above-mentioned problems associated with the obstruction of visibility due to the arrangement of the mirrors are not solved.

[Purpose] In view of the above problems, an object of the present invention is to display predetermined write information by magnifying projection without obstructing the field of view.

[0012]

As shown in FIG. 1, the present invention has an input area surface on a two-dimensional plane, and selectively designates point coordinates with respect to the input area surface to obtain coordinate information. By providing the input means 2 for inputting, and the display means 3 for generating image data based on the coordinate information input to the input means 2 and enlarging and projecting the image data on the display unit 4, Has been achieved.

In this case, it is preferable that the input means 2 is a coordinate input section 6 provided on the flat display section 5, as described in claim 2, and the display means 3 is used.
Is an image forming section 7 that forms a desired transparent image based on the coordinate information input to the input means 2, and a light irradiating section 8 that irradiates the transparent image formed by the image forming section 7 with light. And an image projection unit 9 for enlarging and projecting the transmission image irradiated by the light irradiation unit 8 on the display unit 4.

[0014]

According to the present invention, the display means generates image data based on the coordinate information input to the input means,
Since this image data is enlarged and projected on the display unit, unlike the case where the drawing information in the input means is directly projected,
It is not necessary to dispose a mirror that obstructs the field of view above the input unit.

As a result, predetermined write information is displayed by magnifying projection without obstructing the field of view.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS.
Will be described with reference to. 2 to 7, in FIG.
The same reference numerals are given to the same portions as.

First, the configuration of this embodiment will be described.

FIG. 2 is a diagram showing the structure of the main part of this embodiment. In FIG. 2, the information processing device 1 includes a coordinate input unit 2 that is an input unit, a projection display unit 3 that is a display unit, and a screen 4 that is a display unit.

The coordinate input unit 2 is, as shown in FIG. 2, an LCD (Liquid Crystal Displ) which is a flat display unit.
ay) 5 and an input tablet 6 which is a coordinate input section. In particular, the LCD 5 is composed of a liquid crystal display panel 5a, a backlight 5b, and a drive control section 5c, and the input tablet 6 is a tablet body 6a. And a stylus pen 6b.

FIG. 3 is a sectional view of the liquid crystal display panel 5a of the LCD 5.

As shown in FIG. 3, the liquid crystal display panel 5a includes polarizing plates 11 and 11 ', glass substrates 12 and 12', transparent electrodes 13 and 13 ', insulating films 14 and 14', and an alignment film 1.
5, 15 ', a spacer 16 and a liquid crystal layer 17, and specifically, the polarizing plates 11 and 11' are formed on the outer surfaces of the glass substrates 12 and 12 ', respectively.
Transparent electrodes 13, 13 'are formed on the opposite surfaces of the glass substrates 12, 12', respectively.
Insulating films 14, 14 'and alignment films 15, 1 are provided on the surface of 3'.
Forming a 5 '. Spacers 16 are provided between the alignment films 15 and 15 'at substantially predetermined intervals, and
A liquid crystal layer 17 is formed. In FIG. 3, 18 is a sealing material.

The polarizing plates 11 and 11 'have a polarizing layer made of TAC.
It is a film sandwiched by a protective layer of (cellulose triacetate) and has a function of emitting linearly polarized light when natural light is incident.

The glass substrates 12 and 12 'are borosilicate glass, and the transparent electrodes 13 and 13' are tin oxide-doped indium oxide films (hereinafter referred to as ITO: Indium Tin O 2).
xide film) is a low resistance film formed by. In addition, the alignment film 1 formed via the insulating films 14 and 14 '
Reference numerals 5 and 15 ′ are organic polymer films for orienting liquid crystal molecules when subjected to a treatment such as rubbing, and are polyvinyl alcohol (PVA: Poly Vinyle Alcoho) formed by a spin coater.
l) or polyimide resin rubbed is used.

The spacer 16 is a spherical body made of an elastic plastic having a diameter of about 10 μm.
It is used to regulate the substrate gap (gap) of 12 'and maintain an appropriate thickness of the liquid crystal layer 17.

The liquid crystal layer 17 comprises two transparent glass substrates 1
Nematic liquid crystal sandwiched between 2 and 12 'is attached to the glass substrate 1
The so-called TN (Twisted Nematic) in which the molecular axis is twisted about 90 degrees between the 2 side and the glass substrate 12 'side.
Is.

The backlight 5b is a liquid crystal display panel 5a.
By illuminating from the back, the screen is easy to read without being affected by the ambient brightness.

The drive controller 5c displays a predetermined image on the liquid crystal display panel 5a and controls the projection display unit 3 based on the information input from the input tablet 6.

The input tablet 6 has an input area surface on a two-dimensional plane, and the point coordinates are selectively specified on the input area surface by the stylus pen 6b, whereby the coordinate information at the specified position is obtained. As described above, it is composed of the tablet body 6a and the stylus pen 6b.

FIG. 4 is a diagram showing the structure and detection principle of the input tablet 6 of the electromagnetic induction system.

As shown in FIG. 4A, the tablet body 6a has an electromagnetic induction type input area surface, and FIG.
As shown in, the overcoat 21, the X-side antenna layer 2
2, the intermediate insulating layer 23, the Y-side antenna layer 24, and the glass substrate 25.

The electromagnetic induction type input tablet 6 outputs a signal from the X-side antenna layer 22 and the Y-side antenna layer 24, or picks up a signal from a transmission coil with a built-in stylus pen 6b with an antenna group to indicate a designated position. X
The coordinate and the Y coordinate are detected.

As shown in FIG. 2, the projection type display unit 3 is composed of a liquid crystal panel 7 which is an image forming section, a light source 8 which is a light emitting section, and a projection lens 9 which is an image projecting section. .

The liquid crystal panel 7 has substantially the same structure as the liquid crystal display panel 5a shown in FIG. 3, and the liquid crystal material used is NCAP (Nematic Curvilinear Aligned Phase).
, A polymer dispersion type liquid crystal in which a nematic liquid crystal is dispersed in a polymer matrix,
The formation of 11 'is omitted.

FIG. 5 is a diagram for explaining the operation of the polymer-dispersed liquid crystal, and FIG. 6 is a diagram showing the relationship between the applied voltage and the transmittance with respect to the polymer-dispersed liquid crystal.

Unlike the TN mode, which requires a polarizing plate, the polymer-dispersed liquid crystal has a characteristic of scattering incident light as shown in FIG.
Form a contrast by absorption. In addition, in FIG. 5, L
Is a nematic liquid crystal droplet.

In the polymer-dispersed liquid crystal, when no electric field is applied, the incident light shows a scattered state as shown in FIG. 5 (a). Incidentally, this light scattering has two kinds of actions, that is, due to the difference in refractive index at the interface between the liquid crystal and the polymer, and that due to the random alignment direction of the nematic liquid crystal droplets L. In the presence of an electric field, the nematic liquid crystal droplets L are arranged in the direction of the electric field and are in a transmissive state, as shown in FIG.

That is, since the polymer dispersion type liquid crystal does not use a polarizing plate, it is possible to obtain a brightness close to 3 times that of TN. At the same time, when it is used as a guest host display, a wide viewing angle can be realized, which is faster than TN. Response speed (2-5m
s) is provided, the transmitted light can be efficiently used.

As shown in FIG. 2, the light source 8 is composed of a high-intensity metal halide lamp 8a and a condenser lens 8b composed of a condenser lens, and irradiates the liquid crystal panel 7 with light. .

The projection lens 9 is composed of a plurality of optical lens groups made of glass or plastic, magnifies the light transmitted through the liquid crystal panel 7, and screens 4
To project on.

The screen 4 has a screen surface coated with aluminum (Al) and displays an image magnified by the projection lens 9.

Next, the operation (action) of this embodiment will be described.

FIG. 7 shows an information processing apparatus 1 according to this embodiment.
FIG. In FIG. 7, reference numeral 31 denotes a key switch group for instructing various operations in the information processing apparatus 1, including a power on / off switch 32, an input mode changeover switch 33, and a focus adjustment up / down switch. 34 and the like.

First, when the power on / off switch 32 is pressed, the power supply voltage is supplied to each circuit in the information processing apparatus 1, and various control signals are set to L from the drive control section 5c.
The data is output to the CD 5, the input tablet 6, the liquid crystal panel 7, and the like, and the backlight 5b is turned on, so that the transmissive display is performed by the liquid crystal display panel 5a at the back surface position of the input tablet 6, and the operation starts.

In this state, when the stylus pen 6b selectively designates the point coordinates to the tablet body 6a to perform a predetermined writing input, the coordinate information of the point coordinates input by the stylus pen 6b is transferred to the drive controller 5c. Further, the liquid crystal display panel 5a and the liquid crystal panel 7 are written based on the coordinate information detected by the drive control unit 5c.

Here, since the information written on the liquid crystal display panel 5a is transparently displayed on the tablet body 6a, it is as if the tablet body 6a was operated by the stylus pen 6b.
Is displayed as if it had been written.

On the other hand, the information written in the liquid crystal panel 7 is illuminated by the metal halide lamp 8a and the condenser lens 8b, and the transmitted light transmitted through the liquid crystal panel 7 is magnified by the projection lens 9. Is projected on the screen 4.

As a result, the information input to the tablet body 6a by the stylus pen 6b is enlarged and projected forward.

As described above, in the present embodiment, the projection display unit 3 generates image data based on the drawing information input to the coordinate input unit 2, and the image data is projected on the screen 4 in an enlarged scale. Unlike the conventional one in which the drawing information on the cell film is directly projected, it is not necessary to dispose a mirror obstructing the field of view above the coordinate input unit 2, and the predetermined writing information can be expanded without obstructing the field of view. Can be projected and displayed.

Another preferred embodiment of the present invention will be described below with reference to FIG.
Will be described with reference to. In FIG. 8, the same parts as those in FIG. 4 are designated by the same reference numerals.

In this embodiment, an electrostatic capacity type input tablet 6'is used instead of the electromagnetic induction type input tablet 6 used in the above-mentioned embodiments.

FIG. 8 is a diagram showing the structure and detection principle of the input tablet 6'by the capacitance method.

As shown in FIG. 8 (a), the tablet body 6a 'has a capacitance type input area composed of an overcoat 41, an upper electrode 42, an intermediate insulating layer 43, a lower electrode 44, and a film sheet 45. As shown in FIG. 8B, the stylus pen 6b ′ is provided with a pen switch 46 and an amplifier 47, and is connected to a tablet controller 49 by a joining cable 48.

Input tablet 6'by capacitance method
By arranging two transparent glass substrates having an X electrode and a Y electrode in an overlapping manner, and detecting a signal for scanning the X electrode and the Y electrode through the capacitance of the transparent glass substrate with a stylus pen 6b ′. The coordinates can be detected.

Therefore, the structure according to this embodiment can also have the same operation as that of the above-mentioned embodiments.

Another preferred embodiment of the present invention will be described below with reference to FIG.
Will be described with reference to. In FIG. 9, the same parts as those in FIG. 4 are designated by the same reference numerals.

In this embodiment, a resistance film type input tablet 6 "is used in place of the electromagnetic induction type input tablet 6 used in the above-described examples.

FIG. 9 is a diagram showing the structure and the detection principle of the input tablet 6 "of the resistance film type.

As shown in FIG. 9A, the tablet body 6a ″ has a resistance film type input area surface, and FIG.
As shown in, the transparent sheet 51, the ITO films 52, 5
2 ', a glass substrate 53, and a spacer 54.

The resistance film type input tablet 6 "is an IT
The coordinates can be detected based on the resistance division ratio in the resistance film by measuring the potential at a certain point in the state where voltages are separately applied from the X direction and the Y direction of the O film plane.

Therefore, in the structure according to the present embodiment, the coordinates can be input by simply pressing the input area surface without using the stylus pen.

Further, in terms of cost, it can be manufactured at the lowest cost as compared with the above-mentioned input tablets.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say. For example, in the above embodiment, as the polymer dispersed liquid crystal material,
NCAP is used, but not limited to this, for example, PD
LC (Polymer Dispersed Liquid Crystal), LCPC
(Liquid Crystal Pilymer Composite), PNLC (Pi
Polymer-dispersed liquid crystal materials such as lymer Network Liquid Crystal) may be used.

The transparent electrode is also formed of an indium oxide film (IT
Not limited to the O film), a tin oxide film (SnO2 film) or the like may be used.

Further, as the lamp used as the light source, a halogen lamp, a xenon lamp or the like may be used instead of the metal halide lamp in the above embodiment.

[0065]

According to the present invention, image data is generated by the display means based on the coordinate information input to the input means, and this image data is enlarged and projected on the display section. Therefore, the drawing information in the input means remains unchanged. Unlike the conventional projection, it is not necessary to dispose a mirror that obstructs the field of view above the input unit.

Therefore, it is possible to magnify and display the predetermined write information without obstructing the field of view.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an information processing apparatus of the present invention.

FIG. 2 is a diagram showing a configuration of a main part of the present embodiment.

FIG. 3 is a cross-sectional view of a liquid crystal display panel.

FIG. 4 is a diagram showing a structure and a detection principle of an input tablet based on an electromagnetic induction method.

FIG. 5 is a diagram for explaining the operation of the polymer-dispersed liquid crystal.

FIG. 6 is a diagram showing a relationship between an applied voltage and a transmittance with respect to a polymer-dispersed liquid crystal.

FIG. 7 is a perspective view of an information processing apparatus according to this embodiment.

FIG. 8 is a diagram showing a structure and a detection principle of an input tablet based on a capacitance method.

FIG. 9 is a diagram showing a structure and a detection principle of an input tablet of a resistance film type.

[Explanation of symbols]

 1 Information Processing Device 2 Coordinate Input Unit (Input Means) 3 Projection Display Unit (Display Means) 4 Screen (Display) 5 LCD (Flat Display) 5a Liquid Crystal Display Panel 5b Backlight 5c Drive Control 6 Input Tablet ( Coordinate input part) 6a Tablet body 6b Stylus pen 6'Input tablet (coordinate input part) 6a 'Tablet body 6b' Stylus pen 6 "Input tablet (coordinate input part) 6a" Tablet body 6b "Stylus pen 7 Liquid crystal panel (image formation) 8) Light source (light irradiation unit) 8a Metal halide lamp 8b Condensing lens 9 Projection lens (image projection unit) 11, 11 'Polarizing plate 12, 12' Glass substrate 13, 13 'Transparent electrode 14, 14' Insulating film 15, 15 'Alignment film 16 Spacer 17 Liquid crystal layer 18 Sealing sealing material 21 Overcoat 22 X-side antenna layer 23 Intermediate insulating layer 24 Y-side antenna layer 25 Glass substrate 31 Key switch group 32 Power on / off switch 33 Input mode changeover switch 34 Focus adjustment up / down switch 41 Overcoat 42 Upper electrode 43 Intermediate Insulating layer 44 Lower electrode 45 Film sheet 46 Pen switch 47 Amplifier 48 Joining cable 49 Tablet controller 51 Transparent sheet 52, 52 'ITO film 53 Glass substrate 54 Spacer

Claims (3)

[Claims] 1. An input means having an input area surface on a two-dimensional plane, and inputting coordinate information by selectively pointing point coordinates to the input area surface, and coordinates input to the input means. An information processing apparatus comprising: a display unit that generates image data based on information and enlarges and projects the image data on a display unit. 2. The information processing apparatus according to claim 1, wherein the input means is a coordinate input section provided on a flat display section. 3. The display means irradiates a light onto the transparent image formed by the image forming portion, which forms a desired transparent image based on the coordinate information input to the input means. 3. The information processing apparatus according to claim 1, further comprising: a light irradiating unit that performs light irradiation, and an image projection unit that magnifies and projects a transmission image irradiated by the light irradiating unit onto the display unit.