JPS5838990B2 - Gazousouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image device, and more particularly, to an image device capable of forming an image with a large number of picture elements using a relatively small number of variable intensity optical elements.

In this specification, "variable intensity optical element" refers to a single light emitting element such as a light emitting diode or laser diode, or a single light modulator whose transmittance or reflectance changes when irradiated with light. This means that the variable intensity optical elements may be individual variable intensity optical elements in an array formed of a plurality of these variable intensity optical elements as a unitary structure.

A deflection element that deflects light is provided between an array of variable intensity optical elements whose light intensity is controlled by an input signal and an image receiving surface where an image of the variable intensity optical elements is formed, and the deflection angle of this deflection element is By temporally changing the image of each variable intensity optical element and forming each image at a plurality of positions on the image receiving surface, it is possible to create an image with a large number of picture elements using a relatively small number of variable intensity optical elements. Regarding the image forming device, the applicant of the present invention issued a document titled "
A patent application has been filed for "Image Device" (Japanese Patent Application No. 117811/1983).

The basic configuration of this prior art is shown in FIG.

In the figure, reference numeral 1 denotes an array of variable intensity optical elements, such as a diode array in which a plurality of light emitting diodes are arranged in a row.

2 processes the input signal and sends the output signal to the diode array 1
3 is a deflection element such as an electro-optic crystal or an ultrasonic cell for commonly deflecting the light of each diode of the diode array 1 at a temporally different deflection angle; 4 5 is a drive circuit for the deflection element 3; 5 is a lens for forming an image of the diode array 1 on an image receiving surface, which will be described later; 6 is an image receiving surface on which images of each diode of the diode array 1 are formed.

Now, focusing on the diode Pk on the diode array 1, when the deflection angle of the deflection element 3 is zero, the light from the diode Pk passes through the optical path Rk, and is projected onto the image receiving surface 6 at a position Qk.

When the optical path is deflected to R' and R1 by the deflection element 3, on the image receiving surface 6, as shown in the figure, Q/
and is projected to the position of qk.

Since the deflection element 3 acts commonly on each diode, each diode of the diode array 1 is projected as shown in FIG.

That is, by temporally changing the deflection angle of the deflection element 3, each diode forms images at three positions on the passive surface 6.

By increasing the variety of deflection angles, each diode can be imaged at an even greater number of positions.

Therefore, an image with a large number of picture elements can be formed using a relatively small number of diodes.

FIG. 3 shows an example of an image recording apparatus to which the basic configuration of FIG. 1 is applied.

In FIG. 3, 1, 2°, 3, 4, 5 represent the same as in FIG.

Reference numeral 6a denotes an image receiving surface using an optical recording medium such as a photographic film that continuously travels in the direction of the arrow by the action of a feeding device (not shown), 61 a line image formed on the image receiving surface 6a, 62 is a surface image similarly formed and recorded on the image receiving surface 6a.

With this device, a surface image can be recorded on an optical recording medium as the image receiving surface 6a.

FIG. 4 shows an example of an image display device to which the basic configuration of FIG. 1 is applied.

In FIG. 4, 1, 2°, 3, 4, 5 represent the same as in FIG.

Reference numeral 6b indicates an image receiving surface on which the image of the diode array 1 projected onto the image receiving surface can be displayed to the outside, 63 indicates a line image formed on the image receiving surface 6b, and 7 indicates the line image 63 which is made to swing on the image receiving surface 6b. scanning device with a large deflection angle, such as a mirror for
9 is a drive circuit for the scanning device 7, and 9 is a synchronization circuit for synchronizing the scanning of the scanning device 7 with an input signal.

In this device, a plane image can be displayed by moving the line image 63 in the direction of the arrow on the image receiving surface 6b in synchronization with an input signal using the scanning device 7.

An object of the invention of the present application is to provide an image device having an input signal processing circuit that converts a signal generated by rask scanning, such as a television signal, to be compatible with the above-mentioned image recording device or image display device. That's true.

Hereinafter, the signal generated by rask scanning will be referred to as a "television signal."

Next, the invention will be explained by way of an example.

FIG. 5 is a block diagram of the input signal processing circuit and its peripheral parts of the embodiment device.

The description will be made regarding the case where the present invention is applied to the image recording apparatus shown in FIG.

One scanning time of television signal is TH1 retrace time TR
Using an array of n light emitting diodes as the diode array 1, by causing one light emitting diode to focus an image at m positions on the image receiving surface 6a by the action of the deflection element 30, it is possible to form an image on one scanning line. A case will be described in which M=mn picture elements are recorded.

Each picture element of one scanning line is recorded as 611 line images in FIG.

In FIG. 5, 1, 3, and 4 represent the same things as in FIG.

2a is an input signal processing circuit for television signals, 21 is a sampling circuit that samples each input signal TH/M, and 22 is a delay circuit in which the number of elements to which the signal from the sampling circuit 21 is added is M, and the total delay time is TH. It is a form memory device.

As this delay type memory device, for example, a charge coupled device (
Charge Coupled Device:C
CD) and packet brigade devices (Bucke
Brigade Device: BBD)
etc.

Further, 23 is a driver circuit for applying the output of the delay type storage device 22 to the diode array 1, and 24 is a driver circuit for applying the output of the delay type storage device 22 to the diode array 1;
This is a timing circuit for generating a clock pulse to 2 and synchronizing the signal given to each diode of the diode array 1 and the deviation of the image of the diode on the image receiving surface 6a.

The sampling circuit 21, the delay type storage device 22, the driver circuit 23, and the 21277 circuit 24 constitute the input signal processing circuit 2a.

Next, the operation of this embodiment will be explained.

The input signal is sampled every TH/M by the sampling circuit 21, and its output is applied to the delay type storage device 22.

At the end of the scanning time TH, all M picture elements on the scanning line are stored in the delayed storage device 22.

k of diode array 1 (k=o, 1.2,...
..., n-1)th diode is connected so that the output of the 220km-th delay type memory device is applied.

If the pixel signal stored in the 220 kmth element of the delay type storage device at the end of the scanning time TH is Akm, then when the retrace time TR begins, the pixel signal stored in the kmth element is Akm. Akm-h, Akm+2, ......A for each unit delay time τ = TH/M per element
km, changes sequentially from +Tr1 to +Tr1.

The output of the delayed storage device 22 is not applied to the diodes of the diode array 1 during the scanning time TR, and is not applied to the diodes of the diode array 1 during the retrace time T.
If the timing circuit 24 and driver circuit 23 are configured so that the signal is applied only during R, the pixel signal applied to the second diode of diode array 1 is Akm, Akm+1, etc. for each unit delay time τ.・Akm
It changes sequentially to 10 m-1.

When the pitch of the diode images on the image receiving surface 6a when the deflection angle of the deflection element 3 is zero is d, the position of each diode image is deviated by d/m per unit delay time τ. A drive circuit 4 and a timing circuit 24 for the deflection element 3 are configured.

The above action takes place in parallel to all diodes, so m
If TH, TR, m, n, etc. are determined so that τ-TH/n is smaller than 7-TR, all pixels on the scanning line can be recorded on the image receiving surface 6a within the retrace time TR period. .

FIG. 6 is an explanatory diagram of the position of the image of each diode.

In the figure, D is the scan time plus retrace time (
TH+TR) is the moving distance of the image receiving surface 6a.

By setting D=d/m, the pitch of picture elements in the vertical and horizontal directions of the optical recording medium can be made equal.

As described above, by sending the television signal generated by scanning the original picture to the image recording apparatus according to the present invention, an image corresponding to the original picture can be recorded on an optical recording medium.

In the embodiment shown in FIG. 5, a case has been described in which one delay type memory device is used, but two delay type memory devices and a gate circuit are used, and television signals from odd-numbered scanning lines and television signals from even-numbered scanning lines are By storing the scanning line television signal in another delay storage device, and while storing it in one delay storage device, the output of the other delay storage device is applied to the diode array. Since it is possible to extend the recording time to the optical recording medium per scanning line to TH+TR, the unit delay time during storage τ-T
If a storage unit delay time τ' different from H/M is adopted, τ' can be extended to (TH+TR)/m.

In other words, the recording time per l picture element is (TH+TR)/
m, and the output of the diode can be correspondingly reduced.

Although the above description has been made regarding the case where the present invention is applied to the image recording apparatus shown in FIG. 3, it can be similarly applied to the image display apparatus shown in FIG. 4.

As described in detail above, in the image device according to the present invention, each of the variable intensity optical elements of the array of n variable intensity optical elements whose light intensity is controlled by the signal from the input signal processing circuit. images are formed at a plurality of m positions on the image receiving surface by the action of the deflection element, and the relative positions of the images and rows of the variable intensity optical elements on the image receiving surface are changed and the image receiving surface is In the device for forming an image, the input signal processing circuit includes a delay storage device having a number of elements equal to the product mn; a sampling circuit which divides and samples the corresponding signals and applies them to the delayed storage device, and generates a sampling pulse to the sampling circuit and a clock pulse to the delayed storage device; m corresponding picture element signals are sequentially applied from the delay type storage device to each variable intensity optical element, and in synchronization with this, the deflection element is driven to form an image of each variable intensity optical element on the image receiving surface. Since an image is formed by providing a timing circuit that sequentially shifts the signals to positions corresponding to the m picture element signals, a relatively small number of variable intensity optical elements are used, and the image signal input as a television signal is used to form an image. ,
An effect that can record and display surface images with a large number of picture elements.
There is fruit.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the basic configuration of an image device according to the prior art, FIG. 2 is a diagram showing an image formed by the image device with this basic configuration, and FIG. 3 is an image recording device to which the basic configuration is applied. , FIG. 4 is a block diagram of an image display device applying the basic configuration, FIG. 5 is a block diagram of an input signal processing circuit and its peripheral parts of an embodiment of the present invention, and FIG. 6 is a block diagram of an embodiment of the present invention. FIG. 3 is an explanatory diagram of the position of each diode image by the device. In the figure, 1 is an array of variable intensity optical elements; 2;
2a is an input signal processing circuit, 22 is a delay type storage device, 3 is a deflection element, 6t6at6b is an image receiving surface, and 6L63 is an image on the image receiving surface of the array. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. The image of each of the variable intensity optical elements in a row of n variable intensity optical elements whose light intensity is controlled by a signal from a human signal processing circuit is transferred to a plurality of images on the image receiving surface by the action of a deflection element. The input signal processing circuit includes an input signal processing circuit that forms images at m positions and changes the relative position between the array of images of each of the variable intensity optical elements on the image receiving surface and the image receiving surface. , a delay type storage device with the number of elements equal to the product mn, and (1) a delay type storage device that divides and samples the television signal for the scanning line into signals corresponding to picture elements arranged substantially in a straight line in a number equal to the product mn. a sampling circuit to add a sampling circuit to the sampling circuit, and generating a sampling pulse to the sampling circuit and a clock pulse to the delayed storage device, so that each variable intensity optical element of the array is corresponded to by the delayed storage device. m pixel signals are sequentially applied, and in synchronization with this, the deflection element is driven to sequentially deflect the image of each variable intensity optical element on the image receiving surface to a position corresponding to the m pixel signals. An imaging device characterized by being provided with a timing circuit for positioning the image.