JPH0870431A - Still image playback device - Google Patents

Abstract

(57) [Abstract] [Purpose] A still image playback device that displays multiple still images on a monitor, projector, etc. at meetings and lectures, and can flexibly respond to changes in presentation time when displaying still images. The purpose is to do so. An image storage unit for storing a plurality of still images, a control unit for reading the plurality of still images from the image storage unit in a preset order, and a display unit for displaying the still images read from the image storage unit. In the still image playback device,
The control means reads out a plurality of still images at predetermined time intervals by specifying automatic reproduction, reads out at arbitrary time intervals by specifying manual reproduction, and selects manual reproduction during automatic reproduction and automatic reproduction during manual reproduction. It is configured so that it can be switched to.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still picture reproducing apparatus used for displaying a plurality of still pictures on a monitor, a projector or the like at a place of presentation such as a conference or a lecture.

[0002]

2. Description of the Related Art In recent years, a still image reproducing device has appeared as a tool used at a so-called presentation place such as a presentation, in place of a conventional OHP (overhead projector). This device creates and edits characters and figures with a computer, VTR (video tape recorder) or the like instead of the sheet used in OHP, and stores the completed still image in an image storage means such as a magneto-optical disk, and stores it. A still image is reproduced and displayed on a display means such as a monitor or a projector.

This device has a function of reproducing a still picture after arbitrarily selecting a reproduction order in advance and programming it when giving a presentation or the like. In addition, there are automatic playback function that automatically switches to the next screen at a predetermined time interval, and manual playback function that manually switches to the next screen as the explanation progresses. , Can make presentations efficiently.

[0004]

By the way, in the conventional still image reproducing apparatus, as a reproducing method after interrupted by a question from a listener during the presentation by the automatic reproduction, an arbitrary method is used during the program reproduction. Since it is not possible to switch the playback method, either stop the automatic playback and play again from the beginning, or stop the screen by pausing etc., and continue the announcement with the automatic playback even after canceling the pause.

Therefore, if an interruption occurs during the automatic reproduction, the initially set time distribution becomes meaningless, and the presentation time is greatly deviated due to the interruption time being exceeded. Further, when switching to automatic playback during manual playback, it was necessary to stop manual playback once and perform automatic playback from the beginning.

As described above, since the automatic reproduction cannot flexibly respond to the time, there is a problem that the accuracy of the entire presentation time is deteriorated. Further, when returning to the previous screen due to an interruption due to a question or the like, it is necessary to stop the program reproduction, search the previous screen, and display it. Therefore, the program playback can only support a series of programmed flows, which hinders the presentation process.

An object of the present invention is to flexibly respond to changes in the presentation time by switching from automatic reproduction to manual reproduction or from manual reproduction to automatic reproduction during program reproduction.

[0008]

According to the present invention, an image storage means for storing a plurality of still images, a control means for reading out a plurality of still images from the image storage means in a preset order, and a readout means for the image storage means. In a still image reproducing apparatus including a display unit for displaying a still image, the control unit reads a plurality of still images at a predetermined time interval by specifying automatic reproduction,
It is characterized in that multiple still images can be read out at arbitrary time intervals by specifying manual playback, and can be switched to manual playback during automatic playback and automatic playback during manual playback. To do.

Also, the control means is configured to be able to arbitrarily select the reproduction in the preset order and the reproduction in the reverse order to the preset order during the manual reproduction. It is characterized by

[0010]

In the structure of the present invention, when automatic reproduction is designated, the control means reads out the image data of the still image to be reproduced first from the image storage means, displays it on the display means, and displays the reproduction display time. When it exceeds, the image data of the still image to be reproduced next is read out and displayed on the display means. In this way, a plurality of still images are reproduced in a preset order at predetermined display time intervals.

When the manual reproduction is designated, the control means reads out the image data of the still image to be reproduced first from the image storage means and displays it on the display means. The image data of the still image to be reproduced is read out and displayed on the display means. In this way, a plurality of still images are reproduced in a preset order at arbitrary display time intervals.

Further, when the manual reproduction is switched to during the automatic reproduction, the manual reproduction is transitioned to, and when the automatic reproduction is switched to during the manual reproduction, the automatic reproduction is transited to. In this way, automatic reproduction and manual reproduction can be arbitrarily switched.

The screen switching keys operated during manual reproduction include a "next screen key" and a "previous screen key". If the operated key is the "next screen key", a still image to be reproduced next. Image data is read out and displayed on the display means. If the "previous screen key" is selected, the image data of the previous screen is read out and displayed on the display means.

[0014]

1 is a block diagram showing an embodiment of a still image reproducing apparatus according to the present invention. In this embodiment, image data is stored as still images in image storage means such as a magneto-optical disk, and the plurality of stored still images are read out in a preselected order and displayed on a display means such as a monitor.

In the figure, an RGB decoder 1 converts an input analog video signal Av into a digital RGB signal D.
Convert to _R , D _G , D _B. The AD converter 2 converts the input analog RGB signals A _R , A _G and A _B into digital RGB signals D _R , D _G and D _B.

RGB decoder 1 or AD converter 2
Digital RGB signal D for one still image converted by
_R , D _G and D _B are written in the video memory 4 or 5 under the control of the video memory control circuit 3, and then written in the magneto-optical disk 6 and stored as a still image.

The digital RGB signals D _R , D _G , D _B thus written on the magneto-optical disk 6 as a still image.
Is a digital RGB signal D _R , D for the next one still image if the still image to be read out next to the video memory 4 under the control of the video memory control circuit 3 and to be reproduced next is known in advance. _G and D _B are also read into the video memory 5.

The digital RGB signals D _{R to} D _B of one still picture read out to the video memory 4 are controlled by the video memory control circuit 3 to be controlled by the RGB encoder 7 or DA.
It is output to the converter 8. The RGB encoder 7 converts the digital RGB signals D _{R to} D _B into the analog video signal Av.
And the DA converter 8 converts the digital RGB signal D
_R , D _G , D _B are analog RGB signals A _R , A _G , A _B
Convert to. The image signal of one still image thus converted is supplied to and displayed on display means such as a television receiver or a CRT monitor.

The remote control receiver 9 receives data from the remote control transmitter 10 which gives an instruction to record and reproduce a still image, and transfers the data to the video memory control circuit 3. The remote control transmitter 10 programs the reproduction order of still images to be reproduced and the reproduced images, and specifies automatic reproduction or manual reproduction.

FIG. 2 is a flow chart for explaining the automatic reproduction operation of the still picture reproducing apparatus according to the present invention. In the following description, it is assumed that a plurality of still images have already been written on the magneto-optical disk 6, and the control circuit 3 has already been programmed with the order of reproducing the still images.

First, the image data of the still image to be reproduced first is read from the magneto-optical disk 6 and written in the video memory 4 (step S1). Then, the image data written in the video memory 4 is read out and converted into an analog video signal Av or analog RGB signals A _{R to} A _B by the RGB encoder 7 or the DA converter 8 to be used for a television receiver, a CRT monitor or the like (not shown). indicate. At the same time, the image data to be reproduced next is read from the magneto-optical disk 6 and written in the video memory 5 (step S2).

Next, it is judged whether or not the reproduction has been switched, that is, whether or not the manual reproduction has been switched (step S3). If there is no reproduction switching, it is confirmed whether or not the image being reproduced is within the reproduction display time (step S4). If it is within the reproduction display time, steps S3 and S4.
Is repeated.

When the reproduction display time is exceeded, the image data written in the video memory 5 is written in the video memory 4 (step S5), and the process returns to step S2 and the image data written in the video memory 4 is converted into the RGB encoder 7 or the DA converter. At 8, the analog video signal or analog RGB signal is converted and reproduced on a television receiver or CRT monitor to display a new still image. At the same time, the image data to be reproduced next is read from the magneto-optical disk 6 and written in the video memory 5. In this way, the processes of steps S2 to S5 are repeated, and when all the still images are reproduced, the process ends.

FIG. 3 is a flow chart for explaining the manual reproduction operation of the still picture reproducing apparatus according to the present invention. In the case of manual reproduction, as in the case of automatic reproduction, the image data of the still image to be reproduced first is read from the magneto-optical disk 6 and written in the video memory 4 (step S11), and then the image data written in the video memory 4 is read. To read the analog video signal Av or analog RG by the RGB encoder 7 or DA converter 8.
B signals A _{R to} A _B are converted and displayed on a television receiver, a CRT monitor or the like. At the same time, the image data to be reproduced next is read from the magneto-optical disk 6 and written in the video memory 5 (step S12).

Then, it is judged whether or not the reproduction has been switched, that is, whether or not the automatic reproduction has been switched (step S13). If there is no reproduction switching, it is confirmed whether the screen switching key has been operated (step S1).
4) If not operated, the processes of steps S13 and S14 are repeated. Therefore, the same still image continues to be displayed during this period.

When it is confirmed that the screen switching key has been operated (step S14), the type of the operated key is confirmed (step S15). As a result, "Next screen key"
If is operated, the image data written in the video memory 5 is written in the video memory 4 (step S1).
6) If the "previous screen key" is operated, the image data of the previous screen is read from the magneto-optical disk 6 and written in the video memory 4 (step S17).

Next, returning to the processing of step S12, the image data written in the video memory 4 is converted into an analog video signal or an analog RGB signal by the RGB encoder 7 or the DA converter 8 and then the television receiver or the CRT.
Image data to be reproduced on the monitor and simultaneously reproduced next is read from the magneto-optical disk 6 and written in the video memory 5. In this way, the processes of steps S12 to S17 are repeated, and when all the still images are reproduced, the process ends.

By the way, in the automatic reproduction, when it is determined in step S3 that the reproduction has been switched to the manual reproduction, the process proceeds to step S14 of the manual reproduction, and the above-mentioned processing of step S14 and thereafter is executed. In the manual reproduction, when it is determined in step S13 that the reproduction has been switched to the automatic reproduction, the process proceeds to step S4 of the automatic reproduction, and the above-mentioned step S4 is performed.
Perform the following processing. In this way, automatic reproduction can be switched to manual reproduction, and manual reproduction can be switched to automatic reproduction.

Next, a specific operation example of this embodiment will be described with reference to FIG. As shown in FIG. 3A, it is assumed that the order of still images to be reproduced is programmed in advance by the video memory control circuit 3. That is, the first image S, the second image E, the third image I, the fourth image S again, the fifth image H, the sixth image I, the seventh image G, the eighth image It is assumed that A, 9th image M, 10th image O, 11th image D, ... Are programmed.

Then, as shown in FIG. 6B, the first to fifth images S, E, I, S, and H are reproduced in order by automatic reproduction, and switched to manual reproduction. Then, after the sixth to seventh images I and G are reproduced by manual reproduction, the previous screen key is operated to reproduce the sixth image I again, and further the previous screen key is operated to display the fifth image H. Reproduce. Next, the next screen key is operated to reproduce the sixth image I. Here, the mode is switched to automatic reproduction, and the seventh image G to the eighth and subsequent images A, M, O, D, ... Are sequentially reproduced.

[0031]

According to the present invention, when reproducing a plurality of still images stored in the image storage means such as a magneto-optical disk, either automatic reproduction or manual reproduction is selected, and further automatic reproduction or manual reproduction is selected. Playback can be switched at any time, and reverse playback is possible in manual playback, so if, for example, a listener interrupts a question during auto playback, switching to manual playback will cause a still image to be displayed after the interruption. The presenter can switch the display depending on the situation. In this way, the presenter can flexibly deal with the case where the presenter cannot make the presentation as planned, and the presentation by the still image can be performed more efficiently.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a still image reproducing apparatus according to the present invention.

FIG. 2 is a flowchart for explaining an automatic reproduction operation.

FIG. 3 is a flowchart for explaining a manual reproduction operation.

FIG. 4 is an explanatory diagram for explaining a specific operation example of the present invention.

[Explanation of symbols]

 1 RGB Decoder 2 AD Converter 3 Video Memory Control Circuit 4,5 Video Memory 6 Magneto-Optical Disk 7 RGB Encoder 8 DA Converter 9 Remote Control Receiver 10 Remote Control Transmitter

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G09G 5/00 550 B 9377-5H H04N 5/91

Claims (2)

[Claims] 1. An image storage unit for storing a plurality of still images, a control unit for reading out the plurality of still images from the image storage unit in a preset order, and a still image read out from the image storage unit. In the still image reproducing apparatus including a display unit, the control unit reads out the plurality of still images at a predetermined time interval by specifying automatic reproduction, and specifies the plurality of still images at an arbitrary time interval by specifying manual reproduction. A still image reproducing device characterized in that it can be arbitrarily switched between reading and automatic reproduction during automatic reproduction and automatic reproduction during manual reproduction. 2. The control means can arbitrarily select the reproduction in the preset order and the reproduction in the reverse order to the preset order during the manual reproduction. The still image reproducing apparatus according to claim 1, wherein the still image reproducing apparatus is configured.