JPH06125564A - Color picture display device - Google Patents

Abstract

PURPOSE:To enable miniaturization. CONSTITUTION:A coloring member 2 which has a black-and-white CRT 1 and red, green and blue color filter parts arranged at the angular space of 120 deg. is provided. The member 2 is rotated by a motor 3A so that each color filter part is positioned successively on the display screen 1a of the CRT 1. A member 5 to be detected is placed at a motor 3A side, and a sensor 4 is arranged at an opposed position. The rotation of the motor 3A is controlled by a controller 6. A rotation synchronized pulse P from the sensor 4 and a vertical synchronizing signal VD are made to maintain definite phase relation. The triple-speed color signals of red, green and blue in which the signal of the same field is repeated three times respectively in the period of a 1/3 vertical period are obtained from storage devices 8 to 10, and the color signal corresponding to the color filter part on the display screen 1a of the CRT 1 is selected by a switching device 12. In the CRT 1, horizontal and vertical deflection scanning is executed at the three times as high speed as usual speed. The red, green and blue pictures by the red, green and blue color signals are obtained successively at the period of the 1/3 vertical period by the cooperation of the CRT 1 and the member 2, and a color picture is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monochromatic image display means such as a black and white cathode ray tube (hereinafter referred to as "CRT").
The present invention relates to a color image display device for displaying a color image by using the above.

[0002]

2. Description of the Related Art FIG. 8 is a block diagram showing a conventional color image display device using a monochrome image display means, for example, a monochrome CRT. In the figure, 1 is a black and white CRT, 2 is a color filter part FR, FG, FB which transmits light of three colors of red (R), green (G), and blue (B), respectively, is arranged at an angular interval of 120 °. This is a disk-shaped colored member (see FIG. 9). The coloring member 2 is connected to the motor shaft of the rotary motor 3, and the coloring member 2 is rotationally driven by the motor 3. In this case, the surfaces of the filter portions FR, FG, FB of the coloring member 2 are rotated by the motor 3 so that the screen 1a of the CRT 1 is displayed.
It is made to be located in order on the top.

Reference numeral 4 denotes a rotation sensor for magnetically detecting the rotational phase of the coloring member 2, and reference numeral 5 denotes a detected object arranged on the coloring member 2 for transmitting the rotational phase of the coloring member 2 to the rotation sensor 4. A member, for example, a magnet. In this case, the rotation sensor 4 outputs the rotation synchronizing pulse P every time the coloring member 2 rotates to a predetermined position.

Reference numeral 6 is a control device. A vertical synchronizing signal VD is supplied to the control device 6 and the synchronizing signal VD is supplied.
D is the frequency conversion circuit 7 and is a signal V3 having a triple frequency.
Is converted to and supplied. Further, the control device 6 is provided with a rotation synchronization pulse P output from the rotation sensor 4 described above.
Is supplied. A rotation drive signal is supplied from the control device 6 to the motor 3 described above. In this case, the rotation of the motor 3 is controlled by the control device 6 so that the coloring member 2 makes one rotation in one vertical period and the vertical synchronizing signal VD and the rotation synchronizing pulse P maintain a constant phase relationship.

Further, 8 to 10 are video signal storage devices, and these storage devices 8 to 10 respectively include color signals S of red (R), green (G), and blue (B) constituting color video signals.
R, SG and SB are supplied as write signals. A horizontal synchronizing signal HD and a vertical synchronizing signal VD are supplied to these storage devices 8 to 10 as reference synchronizing signals for writing, and a signal H3 having a frequency three times the horizontal synchronizing signal HD output from the frequency conversion circuit 11 is supplied. A signal V3 output from the frequency conversion circuit 7 is supplied as a reference synchronization signal for reading.

In these storage devices 8 to 10, the supplied color signals SR, SG, SB are sequentially written for each one field, and the written color signals SR, SG, SB for each one field are set to one. The data is repeatedly read three times in a cycle of / 3 vertical period, and these writing and reading are performed in parallel. As a result, the storage device 8
From 10 to 10, color signals SR, SG, S of the same field
Three-fold speed color signals SR3, SG3, SB3 are obtained in which B is repeated three times in a cycle of 1/3 vertical period.

10A to 10C show the color signals SR, SG and SB supplied to the storage devices 8 to 10, and FIG.
To C are color signals SR3 output from the storage devices 8 to 10.
SG3 and SB3 are shown. Note that FIG. 10 and FIG.
1, the color signals in the same field are shown with the same numbers.

The triple speed color signals SR3, SG3 and SB3 output from the storage devices 8 to 10 are supplied to the signal switching device 12. A switching signal S synchronized with the signal V ₃ is supplied from the control device 6 to the signal switching device 12, and the color signals SR3, SG3, SB3 corresponding to the color filter portions FR, FG, FB on the screen 1a of the CRT 1 are selected. And is supplied to the CRT 1.

Further, the horizontal deflection circuit 13 is supplied with a signal H3 having a frequency three times as high as the horizontal synchronization signal HD from the frequency conversion circuit 11, and the vertical deflection circuit 14 is supplied three times as much as the vertical synchronization signal VD from the frequency conversion circuit 7. The signal V3 having the frequency of is supplied. Then, the deflection circuits 13 and 14 supply horizontal and vertical deflection signals to the horizontal and vertical deflection coils (not shown) of the CRT 1. This allows
In the CRT 1, horizontal and vertical deflection scanning is performed at a speed three times higher than usual.

12A to 12D show the relationship between the rotational phase of the coloring member 2 and the switching of the scanning line of the CRT 1 and the signal switching device 12. That is, when the boundary between the color filter portions FB and FR of the coloring member 2 is located at the center of the screen 1a of the CRT 1, the signal switching device 12 is switched to select the color signal SR3, and the color for one field to the CRT 1 is switched. When the supply of the signal SB3 is completed, the supply of the color signal SR3 for one field is started (see A in the same figure).

When the boundary between the color filter portions FR and FG of the coloring member 2 is located at the center of the screen 1a of the CRT 1 after the 1/3 vertical period, the signal switching device 12 causes the color signal SG3.
Is selected, and the supply of the color signal SR3 for one field to the CRT1 is finished and the supply of the color signal SG3 for one field is started (see D in the same figure). Although FIG. 12 shows the color filter portion FR, the same applies to the other color filter portions FG and FB.

In the above structure, the signal switching device 12 outputs the triple speed color signals SR3, SG3 and SB3 to the CRT1.
In addition, the CRT 1 performs horizontal and vertical deflection scanning at triple speed, so that a black and white image by the color signals SR3, SG3, SB3 is sequentially displayed on the screen 1a at a cycle of 1/3 vertical period. It

As described above, in the signal switching device 12, the CR
Color filter portions FR, F of the coloring member 2 on the screen 1a of T1
Since the color signals SR3, SG3, SB3 are selected corresponding to G and FB, the color signals SR3, SG3, are displayed on the screen 1a.
When the image by SB3 is displayed, the screen 1 of CRT1
The color filter portions FR and F of the coloring member 2 are provided on a, respectively.
G and FB are located.

Therefore, the color filter portion F of the coloring member 2 is
Through R, FG, FB, a red image, a blue image, and a blue image can be obtained by the color signals SR3, SG3, SB3 with a cycle of 1/3 vertical period, so that the screen 1a of the CRT 1 is viewed through the coloring member 2. You can recognize color images with.

[0015]

Since the conventional color image display device is constructed as described above, the rotation sensor 4 is arranged between the main body of the motor 3 and the color filter portions FR, FG, FB of the coloring member 2. In order to install, the motor 3 main body and the coloring member 2
Since it is necessary to widen the space between the color filter portions FR, FG, FB, there is a problem in that miniaturization is hindered.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a color image display device which can be miniaturized.

[0017]

A color image display device according to the invention described in claim 1 is a monochrome image display device,
A coloring member having at least three kinds of color filter portions for coloring an image displayed on the screen of the image display means, and a rotation for sequentially switching each color filter portion of the coloring member corresponding to the screen of the image display means. Driving means, storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member, read out the plurality of color signals from the storage means, and display the plurality of color signals on the screen of the image display means. Signal supply means for selecting a color signal corresponding to the color filter portion of the coloring member located at, and supplying it to the image display means, the rotation driving means rotating the coloring member, and the rotation motor. A rotation sensor that detects a rotation phase of the coloring member by detecting a detection target member provided in the motor, and the rotation time based on the rotation phase detected by the rotation sensor. And it has a motor control means for controlling the rotation of the motor.

A color image display device according to a second aspect of the present invention comprises a monochromatic image display means and at least three types of color filter portions for coloring an image displayed on the screen of the image display means. A coloring member having the same, a rotation driving means for sequentially switching each color filter portion of the coloring member corresponding to the screen of the image display means, and a storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member. Reading out the plurality of color signals from the storage means, selecting a color signal corresponding to the color filter portion of the coloring member located on the screen of the image display means from the plurality of color signals, and selecting the color signal in the image display means. The rotation driving means includes a rotation motor for rotating the coloring member, and a rotation of the coloring member detected by a detection target member provided in the rotation motor. Has a rotation sensor for detecting a phase, and a motor control means for controlling the rotation of the rotating motor based on the rotation phase detected by the rotation sensor,
The motor shaft of the rotary motor and the connecting portion of the coloring member are connected to synchronize the rotational phases of the detected member and the coloring member.

[0019]

According to the first aspect of the present invention, the member to be detected for transmitting the rotation phase of the coloring member to the rotation sensor is arranged in the rotation motor, and the color of the rotation motor main body and the coloring member for arranging the rotation sensor is arranged. It is not necessary to widen the space between the filter parts, and the size can be reduced.

According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained, and the motor shaft of the rotary motor and the connecting portion of the coloring member are connected to each other to be detected. Since the rotation phases of the member and the coloring member are synchronized with each other, the rotation sensor can accurately detect the rotation phase of the coloring member even when the coloring member and the motor shaft of the rotary motor are connected.

[0021]

【Example】

Example 1. FIG. 1 is a block diagram showing an embodiment of a color image display device according to the present invention. In FIG. 1, parts corresponding to those in FIG. 8 are designated by the same reference numerals, and detailed description thereof will be omitted. In this example, the rotary motor 3A includes the rotary portion 3
It is divided into a and a fixed portion 3b. The fixed portion 3b of the rotary motor 3A is disposed so as to be located on the side of the disk-shaped coloring member 2, and the motor shaft of the rotary motor 3A and the coloring member 2 are integrated.

A detection member 5 for transmitting the rotation phase of the coloring member 2 to the rotation sensor 4 is provided on the rotating portion 3a of the rotation motor 3A. Then, the rotation sensor 4 for obtaining the rotation synchronizing pulse P is arranged at a position facing the member to be detected 5. This example is configured as described above, and other configurations are similar to those of the example of FIG.

In this example, the same operation as in the example of FIG. 8 is performed, and the color signals SR3, SG are passed through the color filter portions FR, FG, FB of the coloring member 2 with a cycle of 1/3 vertical period.
3, it is possible to obtain a red image, a blue image, and a blue image by SB3. Therefore, the color image can be recognized by viewing the screen 1a of the CRT 1 through the coloring member 2.

According to this embodiment, the member to be detected 5 is provided on the side of the rotary motor 3A, that is, the rotating portion 3a thereof, and the rotation sensor 4 is arranged at a position facing the member to be detected 5, so that the motor 3A Each color filter portion FR of the coloring member 2,
The distance between FG and FB can be narrowed, and the device can be downsized.

Example 2. In the example of FIG. 1, the coloring member 2 and the motor shaft of the motor 3A are integrated, but it is difficult to manufacture. Therefore, it has been proposed to connect the coloring member 2 and the motor shaft of the motor 3A as separate members, but the rotational phases of the detected member 5 and the coloring member 2 provided in the rotating portion 3a of the conventional motor 3 are synchronized. A jig was needed.

Therefore, in this embodiment, as shown in FIG.
A notch 3d is provided at the tip of the motor shaft 3c of the motor 3B, and a cross-sectional shape that matches the cross-sectional shape of the tip of the motor shaft 3c is also inserted into the connecting portion 2a of the coloring member 2 that is connected to this motor shaft 3c. By providing the hole 2b and inserting the motor shaft 3c of the motor 3B into the insertion hole 2c of the connecting portion 2a for connection, the detected member 5 and the coloring member 2 provided on the rotating portion 3a of the motor 3B without a jig The rotation phases of can be synchronized. In this case, the motor shaft 3c of the motor 3B and the connecting portion 2a of the coloring member 2 can be fixed by elastic force by press fitting or an adhesive.

As described above, the motor shaft 3c of the motor 3B is provided with the notch 3d at the tip thereof, and the connecting portion 2a of the coloring member 2 is provided with the insertion hole 2b having a sectional shape corresponding to the sectional shape of the motor shaft 3c. Since the colored member 2 is provided and connected, it is possible to restrict the coloring member 2 from shifting in the rotation direction. Further, at the time of connection, the end 3e of the notch 3d provided on the motor shaft 3c of the motor 3B and the tip 2c of the connecting portion 2a of the coloring member 2 come into contact with each other.
The distance between the R, FG, FB and the screen 1a of the CRT 1 can be properly maintained (see FIG. 1).

When the axial length of the cutout 3d of the motor shaft 3c of the motor 3B is longer than the depth of the insertion hole 2b of the connecting portion 2a of the coloring member 2, the motor shaft 3c of the motor 3B is connected. By contacting the tip with the bottom surface of the insertion hole 2b of the connecting portion 2a, each color filter portion FR of the coloring member 2,
The distance between the FG, FB and the screen 1a of the CRT 1 can be properly maintained. 3A to 3E show another example of the shape of the insertion hole 2b provided in the tip portion of the motor shaft 3c of the motor 3B and the connecting portion 2a of the coloring member 2.

Example 3. In the example of FIG. 2, the cross-sectional shape of the insertion hole 2b provided in the connecting portion 2a of the coloring member 2 is changed to the motor shaft 3c.
The shape of the insertion hole 2b has a circular cross section as shown in FIG.
A screw hole 2d is provided in a portion of the motor shaft 3c corresponding to the notch 3d at the tip end, and the motor shaft 3c is inserted into the insertion hole 2 of the connecting portion 2a.
After inserting into b, the screw 16 may be tightened and fixed in the screw hole 2d. As a result, the detection target member 5 and the coloring member 2 provided on the rotating portion 3a of the motor 3 without the jig.
The rotational phase of the colored member 2 can be synchronized with that of the colored member 2 and the deviation of the colored member 2 in the rotational direction and the thrust direction can be regulated.
Instead of providing the notch 3d at the tip of the motor shaft 3c, a screw hole may be provided in the motor shaft 3c (not shown) and tightened by the screw 16.

Example 4. In the example of FIG. 4, the screw 16 is used, but as shown in FIG. 5, the pin insertion holes 2e, 2e are formed in the connecting portion 2a of the coloring member 2 and the tip of the motor shaft 3c.
3f may be provided and the pin 17 may be fixed through the pin insertion holes 2e and 3f at the time of connection. At this time, the pin insertion hole 2
e and 3f do not need to completely penetrate. The shape of the pin 17 need not be circular in cross section, and the pin head 17
There may be no a.

Example 5. In addition to the above-described embodiment, as shown in FIG. 6, a screw 3g is cut on the tip of the motor shaft 3c, and the motor shaft 3c is inserted into the insertion hole 2b of the connecting portion 2a of the coloring member 2 using a nut 18. You may fix it. In this case, it is not necessary to fix it from the side as in the example of FIGS. 4 and 5, and even if the diameter of the coloring member 2 is large, it can be fixed without problems, and the workability is good. As shown in FIG. 7, the motor shaft 3c is provided with a screw hole 3h in the axial direction,
After inserting the motor shaft 3c into the insertion hole 2b of the connecting portion 2a,
You may fix with the screw 16.

Example 6. Further, the various embodiments described above may be combined and configured. In addition, above-mentioned Examples 2-5
Since the coloring member 2 is configured so as not to shift in the rotation direction or the thrust direction, the configuration of (1) can be similarly applied to the one in which the detection target member 5 is arranged on the coloring member 2 (see FIG. 8). it can.

[0033]

According to the first aspect of the present invention, there is provided a monochromatic image display means and at least three kinds of color filter portions for coloring an image displayed on the screen of the image display means. A member, a rotation driving means for sequentially switching each color filter portion of the coloring member corresponding to the screen of the image display means, a storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member, The plurality of color signals are read out from the storage means, and a color signal corresponding to the color filter portion of the coloring member located on the screen of the image display means is selected from the plurality of color signals and supplied to the image display means. A rotation motor for rotating the coloring member, and a rotation phase of the coloring member is detected by detecting a detection target member provided in the rotation motor. Since it has a rotation sensor and a motor control means for controlling the rotation of the rotation motor based on the rotation phase detected by the rotation sensor, the rotation motor main body and the color filter portion of the coloring member for disposing the rotation sensor. It is not necessary to set a wide interval, and it is possible to achieve miniaturization.

According to the second aspect of the present invention, a monochromatic image display means and a coloring member having at least three kinds of color filter portions for coloring the image displayed on the screen of the image display means. A rotation driving means for sequentially switching each color filter portion of the coloring member corresponding to the screen of the image display means, a storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member, and the storage means. A signal supply for reading out the plurality of color signals, selecting a color signal corresponding to the color filter portion of the coloring member located on the screen of the image display means from the plurality of color signals, and supplying the selected color signal to the image display means. Means for rotating the coloring member, and a rotation motor for detecting a rotation phase of the coloring member by detecting a detection target member arranged on the rotation motor. A sensor and a motor control unit that controls the rotation of the rotary motor based on the rotation phase detected by the rotation sensor, and connect the motor shaft of the rotary motor and the connecting portion of the coloring member to each other. Since the rotation phases of the detected member and the coloring member are synchronized with each other, the same effect as that of the invention according to claim 1 can be obtained, and in addition to the manufacturing method for connecting the coloring member and the motor shaft of the rotary motor. Even with a simple configuration, there is an effect that the rotation sensor can accurately detect the rotation phase of the coloring member.

[Brief description of drawings]

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

FIG. 2 is a configuration diagram showing a main part of another embodiment of the color image display device according to the present invention.

FIG. 3 is a diagram showing another configuration example of a connecting portion between a motor shaft and a disc-shaped coloring member.

FIG. 4 is a diagram showing another configuration example of a connecting portion between a motor shaft and a disk-shaped coloring member.

FIG. 5 is a diagram showing another configuration example of a connecting portion between a motor shaft and a disk-shaped coloring member.

FIG. 6 is a diagram showing another configuration example of a connecting portion between a motor shaft and a disc-shaped coloring member.

FIG. 7 is a diagram showing another configuration example of the connecting portion between the motor shaft and the disc-shaped coloring member.

FIG. 8 is a configuration diagram showing a conventional color image display device.

FIG. 9 is a diagram showing a configuration of a disc-shaped coloring member.

FIG. 10 is a diagram showing an input color signal of a video signal storage device.

FIG. 11 is a diagram showing an output color signal of a video signal storage device.

FIG. 12 is a diagram for explaining the relationship between the rotational phase of the disc-shaped coloring member and the switching of the scanning line of the CRT and the signal switching device.

[Explanation of symbols]

 1 Black-and-white cathode ray tube 2 Disc-shaped coloring member 2a Connection part 2b Insertion hole 3A, 3B Rotating motor 3a Rotating part 3b Fixed part 3c Motor shaft 4 Rotation sensor 5 Detected member 6 Control device 7, 11 Frequency conversion circuit 8 ~ 10 video signal storage device 12 signal switching device

Claims (2)

[Claims] 1. A monochromatic image display means, a coloring member having at least three types of color filter portions for coloring an image displayed on the screen of the image display means, and each color filter portion of the coloring member Rotational driving means for sequentially switching corresponding to the screen of the image display means, storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member, and the plurality of color signals read from the storage means, Signal supply means for selecting a color signal corresponding to the color filter portion of the coloring member located on the screen of the image display means from a plurality of color signals and supplying the selected color signal to the image display means, wherein the rotation drive means is A rotation motor that rotates the coloring member, and a rotation sensor that detects a rotation phase of the coloring member by detecting a member to be detected arranged in the rotation motor,
A color image display device comprising: a motor control unit that controls the rotation of the rotation motor based on the rotation phase detected by the rotation sensor. 2. A monochromatic image display means, a coloring member having at least three kinds of color filter portions for coloring an image displayed on the screen of the image display means, and each color filter portion of the coloring member Rotational driving means for sequentially switching corresponding to the screen of the image display means, storage means for storing a plurality of color signals corresponding to the color filter portion of the coloring member, and the plurality of color signals read from the storage means, Signal supply means for selecting a color signal corresponding to the color filter portion of the coloring member located on the screen of the image display means from a plurality of color signals and supplying the selected color signal to the image display means, wherein the rotation drive means is A rotation motor that rotates the coloring member, and a rotation sensor that detects a rotation phase of the coloring member by detecting a member to be detected arranged in the rotation motor,
And a motor control means for controlling the rotation of the rotary motor based on the rotation phase detected by the rotation sensor, and connecting the motor shaft of the rotary motor and the connecting portion of the coloring member to the detected member. And a rotation phase of the coloring member is synchronized with each other, a color image display device.