KR100329232B1 - Apparatus for simultaneously reproducing various images - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reproducing apparatus, and more particularly, to an apparatus for allowing a viewer to select and watch a desired image while simultaneously reproducing a plurality of images on one display device. The present invention provides a recording medium in which a plurality of kinds of video objects are arranged alternately by one frame, and playback means for simultaneously playing back a plurality of video materials recorded on the recording medium so that each video material is displayed as a mixed image. Image selection means for selectively recognizing only the video image by opening and closing in synchronization with the period of playback of each video image of the mixed video to be reproduced, and sound output means for selectively outputting only the sound of the video selected by the video selection means It is composed.

Description

Apparatus for simultaneously reproducing various images}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reproducing apparatus, and more particularly, to an apparatus for allowing a viewer to select and watch a desired image while simultaneously reproducing a plurality of images on one display device.

Video reproducing apparatuses, including VTRs and computer moving images, have been rapidly developed, including the conventional sub-zero values. Unlike still picture reproducing apparatus, moving picture reproducing apparatuses, especially the yungsja, utilize the afterimage effect of the human eye. In the past, the projection system mainly used to make a moving picture on the screen by moving a large number of still images recorded on the film about 24 times per second, but TV and VTR were developed in recent years. By using this method, a moving image can be realized by data processing.

In any case, however, one display device is necessary for one image object. In other words, it was possible to display only one pro video on one screen or monitor.

Therefore, the present applicant can obtain a great economic effect in terms of facilities or time if a plurality of viewers can simultaneously select and watch desired images among them while simultaneously playing a plurality of images on one screen or monitor with one device. With the focus on the invention, the invention described below has been devised.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-image simultaneous playback apparatus, which allows a plurality of viewers to simultaneously select and view a desired image, while simultaneously playing multiple videos.

1 is a film used in the image reproducing apparatus of the first embodiment of the present invention.

Fig. 2 is an overall configuration diagram of a video reproducing apparatus according to the first embodiment.

Figure 3 is a principle diagram of the Geneva mechanism, which is the film transfer mechanism of Example 1;

4 is an operation timing diagram of the liquid crystal shutter eyeglasses utilized in Example 1;

5 is a schematic structural diagram of Embodiment 2 according to the present invention;

<Description of Major Symbols in Drawing>

First, third, fifth, and seventh image frames 10a, 10b, 10c, and 10d Second, fourth, sixth, and eighth image frames 20a, 20b, 20c, and 20d 21) Projector 22 Liquid Crystal Shutter Glasses 23a, 23b Driving Pulse Generators 25a, 25b Liquid Crystal Shutter Controller 26 Sound Output 27 Headphones 24a, 24b Motor Shaft 31 Drive Gear 32 Geneva Cam 33 Pin 32a Slit 33a, 33b, 33c Camera 51a, 51b Image Grabber 52a, 52b

The present invention to achieve the above object

A recording medium in which a plurality of kinds of image materials are arranged alternately one frame at a time, reproducing means for simultaneously reproducing a plurality of kinds of image materials recorded on the recording medium so that each image is displayed as a mixed image, and mixing reproduced by the reproducing means Image selection means for selectively recognizing only the image by opening and closing in synchronization with the period in which each image is reproduced from the image, and sound output means for selectively outputting only the sound of the image selected by the image selection means.

In the above, the recording medium is a film in which multiple images are alternately recorded one frame at a time, and the reproducing means is a projection device for projecting the film onto a screen.

In addition, the recording medium is an electronic recording medium for synthesizing and storing multiple video objects alternately by frame by digital processing means, and the reproducing means is a computer that reproduces a mixed image mixed with each video material by executing the electronic recording medium. It is characterized by that.

The recording medium may be a video tape in which multiple images are alternately recorded for each frame, and the reproducing means is a video player for reproducing the mixed image in which each image is mixed by reproducing the video tape.

In the present invention, the video object selecting means includes a liquid crystal shutter controller for counting the time that the video frame of each video object reproduced by the playback apparatus moves, and a drive pulse generator for generating a drive pulse corresponding to the period counted by the liquid crystal shutter controller. The liquid crystal shutter glasses may recognize only an image that is opened and closed by the driving pulse generated by the driving pulse generator and is reproduced at the same period as the opening and closing cycle.

In particular, the Young's teeth are driven by a Geneva drive mechanism consisting of a Geneva cam connected to a reel for winding the film, a drive gear for intermittently rotating the Geneva cam, and a motor for rotating the drive gear, whereby a film on which various kinds of images are recorded is intermittently. The electronic recording medium may be any one of a magnet disk, a CD-ROM, and a semiconductor memory.

Hereinafter, specific embodiments will be described with reference to the drawings.

Example 1

Embodiment 1 relates to an embodiment in which the technical idea of the present invention is implemented in a conventional projection apparatus. In other words, a device for making a video by rotating the film recorded on the screen and projecting on the screen, and a device for recording a plurality of images on the film and project them on the screen at the same time to select and view the desired video from the mixed video will be.

FIG. 1 shows an example in which multiple kinds of images are recorded on one film according to the present embodiment, and two heterogeneous images A and B are alternately recorded on one film. Referring to the film of FIG. 1, a video object 'A' is recorded in the first, third, fifth, and seventh image frames 10a, 10b, 10c, and 10d, and the second, fourth, sixth, and fifth films are recorded. It can be seen that an image called 'B' is recorded in the eight image frames 20a, 20b, 20c, and 20d.

Arranging the position of the image frame recorded on the film as shown in Figure 1 in the general formula is determined as follows.

F = video frame position,

i = number of types of footage recorded on one film,

k = number of specific images

n = natural number (1, 2, 3, 4, 5, ...)

For example, if three images are recorded on one film, i = 3. If you want to know the frame position (F) of the second of these images, k = 2, so F = 3 (n-1 By substituting n = 1, 2, 3, 4, ... for +2, it can be seen that the second image is recorded in the second, fifth, and eighth frames, respectively.

In the present embodiment, as shown in FIG. 1, various video objects are recorded together on one film. Therefore, when the film is simultaneously projected on one screen by one device, multiple recorded video materials are mixed and projected on the screen. do. Of course, the image projected on the screen cannot be distinguished with the naked eye. The concept of the present embodiment is to selectively view the mixed images of the mixed images into individual images by using liquid crystal shutter glasses.

2 is a block diagram showing the overall configuration of a video reproducing apparatus according to the present embodiment. In this configuration, in the present embodiment, in the same manner as in Fig. 1, the projection unit 22 and the screen 21 projecting the film 11 on which the two types of video objects are alternately recorded on the screen 21 are projected. First and second liquid crystal shutter glasses 23a and 23b for selectively viewing a desired image (a or b) in the mixed image to be imaged, and first and second headphones for selectively listening to a sound corresponding to each image. 24a and 24b, first and second drive pulse generators 25a and 25b for opening and closing liquid crystal shutters of the first and second liquid crystal shutter glasses 23a and 23b, and first and second drive pulse generators 25a and 24b. 25b) each of the images in the liquid crystal shutter controller 26, the first and the second headphones 24a and 24b, which controls to generate driving pulses alternately so that the respective images can be viewed while the images a and b are projected. It is composed of a sound output unit 27 for supplying a sound corresponding to the.

The projection unit 22 is not much different from the conventional projection apparatus. That is, like the conventional projection apparatus, the film must be intermittently moved so that each image recorded on the film moves while stopping for a predetermined time. This can be used for the intermittent rotation mechanism, as shown in Figure 3, using the Geneva mechanism using a Geneva cam. The Geneva mechanism refers to a mechanism for intermittent driving by rotating the Geneva cam 33 while the drive gear 32 rotates by the rotation of the motor. Since the Geneva mechanism can be intermittently driven in proportion to the rotational amount of the drive gear, it is widely used in conveyor belt driving mechanisms such as assembly lines, printers, projectors, and the like.

When the drive gear 32 is rotated by a belt or the like from a motor (not shown), the pin 32a rotatably installed on the circumference of the drive gear 32 rotates and is radially recessed in the Geneva cam 33. Enter the slit 33a. The Geneva cam 33 does not rotate while the pin 32a entering the slit 33a goes to the end of the slit 33a. However, when the pin 32a reaches the end of the slit 33a, the rotational force of the pin 32a is generated. (33) rotates and the Geneva cam 33 rotates by 30 degrees, the pin is pulled out of the slit 33a and enters the adjacent slit 33b again. In this process, the Geneva cam rotates intermittently so that each frame of the film 11 wound thereon may stay on the screen for a predetermined time.

Geneva cams can be easily found in kinematics textbooks and mechanical terminology dictionaries, and Korean patent publications (application number 10-1994-29005) can also be found. In Fig. 3, the circumferential distance between each slit should match the length of each image frame on the film. Since there are six slits in FIG. 3, when the Geneva cam 33 rotates once, six image frames of the film may be projected onto the screen.

As described above, the projection unit 22 of the present embodiment may be designed to move the film on the screen about 24 times per second in the same manner as the conventional projection apparatus. However, the difference will be described later, but because the mixed image is projected on the screen 21, it should be able to select and view each image. To this end, the projection unit 22 generates a synchronization signal.

Before explaining this, the liquid crystal shutter eyeglasses applied to the present invention will be described. In the present invention, since a plurality of images are reproduced mixed together, it has been described above that the glasses using the liquid crystal shutter must be worn in order to select them. The liquid crystal shutter is used to change the transmittance of light as the crystal structure changes according to the applied voltage due to the nature of the liquid crystal, and is widely applied to electronic shutters and glasses for stereoscopic images of a camera. Glasses for stereoscopic images alternately shield the left eye and the right eye to actually see the difference between the binocular angles of the human being so that they can feel a three-dimensional feeling.

In the present invention, when selecting any one of a variety of images recorded on the film, the principle that only the desired image can be viewed by opening the liquid crystal shutter only when the image is projected on the screen and shielding the liquid crystal shutter at the other moment .

This principle is shown in FIG. 4, which is a timing chart when two video objects are recorded together. That is, the liquid crystal shutter glasses that can see the first image should be opened only in the sections T1, T3, T5, T7, ..., and the liquid crystal shutter glasses for the second image should be opened only in the sections T2, T4, T6, T8, ... do. Therefore, the liquid crystal shutter eyeglasses of each image should be controlled to be opened only in a section expressed by the general formula shown in Equation (1).

The problem is how to handle the synchronization between the start position of each image recorded on the film and the opening point of the liquid crystal shutter. Various known techniques can be used to solve the synchronization between the opening and closing time of the liquid crystal shutter and the moving time of each image frame. Among them, a method of counting the position of each image frame using a digital counter may be utilized. As shown in Fig. 2, each image frame recorded on the film returned by the liquid crystal shutter controller 26 in the projection unit 22 in order to alternately open and close the first liquid crystal shutter glasses 23a and the second liquid crystal shutter glasses 23b. By counting the travel time, the first and second drive pulse generators 25a and 25b can alternately generate drive pulses.

That is, if the synchronization signal is generated when the first image frame starts to move from the projection unit 22, the liquid crystal shutter controller 26 can count the frame movement time on the film using this as a reference signal. Such a technique is a technical matter that can be easily implemented by those skilled in the art by a synchronization technique among digital processing techniques.

In addition, in order to reduce the error between the liquid crystal shutter opening and closing time and the image switching time, if the projection unit 22 can generate a synchronization signal every predetermined time, the liquid crystal shutter controller 26 is based on the synchronization signal to accurately open and close the liquid crystal shutter. You will be able to control the time. There may be various methods of generating the synchronizing signal from the projection unit 22. However, mechanically, the identification mark that can be read by the optical sensor is marked at a predetermined distance of the film, and the optical sensor pulses each time the identification mark is read. Can be generated and this pulse can be used as an actuator shutter synchronization signal.

On the other hand, in this embodiment, it is also necessary to separate the sound for each image. This can also be processed similarly to the method of the conventional single image reproduction apparatus. That is, each video is reproduced through the first and second headphones 24a and 24b, which are reproduced separately by using the audio output unit 27, and the recording tapes in which the audio signals for the respective video objects are recorded. You can selectively listen to the speed at which you are listening. This is a technical matter that can be easily carried out by those of ordinary skill in the art.

According to the first embodiment, it is possible to simultaneously enjoy different programs in one theater.

Example 2

The first embodiment implements the technical idea of the present invention in a conventional projection apparatus, while the second embodiment implements the idea of the present invention in a digital video reproducing apparatus. In recent years, with the development of digital image processing technology, image transmission and TV broadcasting using computers have prevailed, and digital TV and digital video (DVD) have emerged. All of these products store video signals as data and process the data to play various special effects and high quality video.

Fig. 5 is a block diagram showing a schematic configuration of an embodiment for implementing the idea of the present invention using an image processing program. The images photographed by the first camera 51a for a image and the second camera 51b for b image are converted into image data by respective image grabbers 52a and 52b. Next, each image data is inserted into a blank image between frames (also called a channel in digital image processing) by a data processing technique. That is, data processing is performed to insert a blank image 53a 'between each channel 53a of a-image data, and to insert a blank image 53b' between each channel 53b of b-image data.

The a-image data and the b-image data into which the blank image is inserted are synthesized (54). The synthesizing process synthesizes so that different image data is superimposed on a blank image inserted in each image. In this way, the a and b image data is data in which a and b image objects are alternately arranged as in the film of FIG. 1. The arrangement of each channel 53a, 53b will be arranged by the same rule as in Equation (1). If the synthesized data is recorded as a file in the memory and then reproduced, an image mixed with a and b image data as well as a monitor will be reproduced.

Here, the liquid crystal shutter glasses and headphones as described in Embodiment 1 are used to selectively view each image data. The application method is the same. However, in the present embodiment, since the image is processed as digital data, it is much easier to synchronize the opening and closing time of the liquid crystal shutter. Since the liquid crystal shutter drive can be performed in the same way as the accurately determined channel shift time, there is no need to generate a separate liquid crystal shutter synchronization signal in the middle.

Although the technical idea of the present invention and the embodiments of the embodiments have been described above, the technical idea of the present invention may be variously modified and applied. For example, the present invention may be applied to video tapes in addition to the projection apparatus, so that various monitors may be viewed as one monitor and one tape in a lecture room, and the like. Could be Therefore, the technical idea of the present invention is not limited to those described above, and modifications can be made by those skilled in the art.

In practice, the present invention provides a viewer with a separate set of liquid crystal glasses for each video recorded at the same time, so that each viewer can watch the desired video with the liquid crystal glasses adjusted to the sync pulse of the video selected by the viewer. In addition, the connection between the liquid crystal shutter glasses and the controller or the synchronous pulse generator can be wired or wireless. The wired method may be a method of making a synchronous pulse output terminal in each seat and connecting it to the controller input line of the liquid crystal shutter glasses, or installing an infrared drive pulse transmitter at a predetermined position around the screen or monitor if the movement of the viewer is large. In addition, by installing an infrared receiver at a predetermined position of the liquid crystal shutter glasses may be connected to each other. All of these techniques are well known techniques that are widely applied at present, and those of ordinary skill in the art can utilize them.

Similarly, headphones are wirelessly possible. FM sound is transmitted with a small output that is proficiency only in the place, and each can carry the receiver easily and listen to the sound.

As described above, according to the present invention, since a plurality of images can be reproduced on a single screen or monitor by using a single device, each desired image can be simultaneously provided in a classroom or a conference room where a large number of people watch. You can choose to watch. In addition, since the theater does not require separate facilities for each pro, it is possible to simultaneously screen several pros as a single facility, thus maximizing the use of facilities and screening in parallel without waiting for sequential screening. There is an effect that can be obtained in time.

In addition, if the present invention is applied to the TV broadcast for each home, since each of the several pros simultaneously appearing in the desired program can be selected and viewed, it is possible to eliminate the channel battle between the family. In addition, it is also possible to air adult-only and children's pros on TV programs at the same time, which can freely organize time zones.

In addition, since a plurality of programs can be screened on one screen, an outdoor theater, which is difficult to be installed in a city center, can enter a city and screen various programs, and one monitor can affect different students in a classroom. You can do audiovisual education without receiving it. For example, right and left classes can be audiovisual education in one classroom, lectures of different subjects in one classroom, and students of different grades in one classroom can be simultaneously audiovisual.

By such various expected effects, if the school teachers can replace the teaching of each grade with the device of the present invention, the teachers can devote to humanity education to the students, and thus a great educational revolution can be expected. By further developing the technical idea, we can expect the possibility of deleting channels and broadcasting dozens of screens simultaneously in the cable broadcasting which has dozens of channels.

Claims (7)

A recording medium in which a plurality of kinds of image materials are arranged alternately one frame at a time, Reproducing means for simultaneously reproducing a plurality of kinds of image materials recorded on the recording medium to display each image as a mixed image; Video material selection means for selectively recognizing only the video image by opening and closing in synchronization with the period of the playback of each video image from the mixed image reproduced by the playback means, And a sound output means for selectively outputting only the sound of the video image selected by the video image selection means. In claim 1, The recording medium is a film in which multiple video materials are alternately recorded one frame at a time, And reproducing means is a projection apparatus for projecting the film onto a screen. In claim 1, The recording medium is an electronic recording medium for synthesizing and storing a plurality of video objects alternately for each frame by digital processing means. And the reproducing means is a computer for reproducing a mixed image in which each image is mixed by executing the electronic recording medium. In claim 1, The recording medium is a video tape in which multiple video objects are alternately recorded for each frame. And the reproducing means is a video player for reproducing the mixed video in which each video material is mixed by reproducing the video tape. The method of claim 2 or 3 or 4, wherein the image selection means A liquid crystal shutter controller that counts the time the video frame of each video object to be played by the playback device is moved; A driving pulse generator for generating a driving pulse corresponding to a period counted by the liquid crystal shutter controller; And a liquid crystal shutter glasses capable of recognizing only an image object which is opened and closed by a driving pulse generated by the drive pulse generator and reproduced at the same period as the opening and closing cycle. The method of claim 2, wherein the permanent A multi-type film characterized by intermittent movement of a film recorded with multiple images, driven by a Geneva drive mechanism comprising a Geneva cam connected to a reel for winding a film, a drive gear for intermittently rotating the Geneva cam, and a motor for rotating the drive gear. Video playback equipment. The apparatus of claim 3, wherein the electronic recording medium is any one of a magnet disk, a CD-ROM, and a semiconductor memory.