JPH05260439A - Picture reproduction controller - Google Patents

Abstract

PURPOSE:To grasp the operating state of a picture reproducing device not relying on duplex communication by recognizing a reproduction area from a reproduction area display picture included in a reproduced picture signal from a picture reproduction device so as to control the picture reproducing device. CONSTITUTION:A reproduction track number is superimposed on a reproduced video signal outputted from a recording and reproducing device 10. Since a display position or a timing and a font pattern of each character of an area on which a reproduction track number is displayed superimposingly on a reproduction picture are recognized in advance, a computer 12 analyzes a display content from a video signal in each area. When the operator makes a designation, the computer 12 uses a direct access command to make a command of reproduction of a track with a designated picture recorded thereon to the recording and reproducing device 10. Then, the reproduction track number is read from the reproduction video signal from the recording and reproducing device 10. When the designated track is reproduced, the picture is fetched and stored on a hard disk 16 as required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reproduction control device, and more particularly to a device for controlling an image reproduction device for reproducing a still image recorded on a recording medium.

[0002]

2. Description of the Related Art An electronic still camera is known as a system for easily recording a still image. Electronic still
In a camera, a captured image is recorded in analog or digital form on a small and relatively large-capacity recording medium such as a small magnetic disk, a solid-state memory device (battery-backed D-RAM, EEPROM, flash memory, etc.), an optical disk, or a magneto-optical disk. To do. Normally, an electronic still camera is also equipped with a playback function, and a captured image can be confirmed on the spot by connecting a liquid crystal TV or the like to the video output terminal. Of course, stationary playback devices have also been commercialized.

A small magnetic disk, which is an early recording medium, has a diameter of 2 inches and is called a still video floppy. It has 50 tracks and one field of video signal is recorded on one track. It is prescribed.

In recent years, image processing technology on a computer has advanced, and a concept has been proposed in which an image captured by an electronic still camera is loaded into a computer and used for various image processing. For this purpose, it is preferable that the electronic still camera (or its reproducing device) can be externally controlled, and a certain electronic still camera or image reproducing device is provided with a terminal for an external control signal.

[0005]

However, for the time being,
Many of the external control functions of the image reproducing device are not limited to receiving the command to turn on / off the reproduction of the image reproducing device or to send the track and to return the command result. Therefore, a computer or the like that externally controls the image reproducing device cannot know whether or not the image reproducing device is operating properly in accordance with the external control signal (for example, reproduction track, presence / absence of error, etc.).

An object of the present invention is to provide an image reproduction control device capable of grasping the operation status of the image reproduction device without relying on bidirectional communication.

[0007]

An image reproduction control apparatus according to the present invention reads a reproduction area from a reproduction area display image included in a reproduction image signal from the image reproduction apparatus and controls the image reproduction apparatus. Characterize.

[0008]

Since the reproduction area display image included in the reproduction image signal determines which reproduction area of the recording medium the reproduction image is from, the image reproduction apparatus that does not have the function of outputting the reproduction area information to the outside without error Be in control.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic block diagram of an embodiment of the present invention. Reference numeral 10 denotes a recording / reproducing apparatus that records an input analog video signal as a still image using a still video floppy as a recording medium, reproduces the recorded still image, and outputs an analog reproduction video signal. Reference numeral 12 is a computer that externally controls the recording / reproducing apparatus 10 and performs image communication with the image reproducing apparatus 10.

In the computer 12, 14 is a CP
U and 16 are large-capacity hard disks capable of digitally storing a large number of image information, 18 is an external control signal to the recording / reproducing apparatus 10 and an interface for image data communication with the recording / reproducing apparatus 10, and 20 is an image. It is a video circuit that outputs a monitor-displayed video signal to the monitor 22.
The interface 18 digitizes the analog video signal from the image reproducing device 10 and supplies it to the CPU 14,
On the other hand, the image data from the CPU 14 is converted into an analog video signal and supplied to the recording / reproducing device 10.

A signal line 24 connecting the recording / reproducing apparatus 10 and the interface 18 of the computer 12 is provided with two lines for a reproduction signal, one for a luminance signal and the other for a chromaticity signal.
2 for luminance signal and chromaticity signal for 0 recording signal
One, one for the control signal of the recording / reproducing apparatus 10 is provided.
Of course, when the recording / reproducing apparatus 10 has a video input / output terminal, two input / output lines for a luminance signal and a chromaticity signal may be used. The control signal of the recording / reproducing apparatus 10 in the present embodiment is an ON / OFF binary level signal and is supplied from the computer 12 to the recording / reproducing apparatus 10. Recording / reproducing apparatus 10
Interprets the command from the computer 12 by its transition timing and on / or off duration. The recording / reproducing apparatus 10 does not transmit a signal indicating the operating state of itself to the computer 12.

FIG. 2 is a block diagram showing the internal circuit configuration of the interface 18. The reproduction luminance signal and the reproduction chromaticity signal from the recording / reproducing apparatus 10 are respectively converted into A / D converters 30,
It is digitized by 32 and temporarily stored in the frame memory 34. The data written in the memory 34 is transferred to the CPU 14 via the control circuit 36. The CPU 14 displays the image information from the interface 18 (control circuit 36) on the monitor by the video circuit 20 as necessary and stores it in the hard disk 16.

The control circuit 36 also temporarily stores the image data from the CPU 14 in the frame memory 34. The image information stored in the memory 34 is read out and converted into analog signals by the D / A converters 38 and 40. The video encoder 42 converts the luminance signal and the chromaticity signal from the D / A converters 38 and 40 into a luminance signal and a chromaticity signal in a format suitable for the input format of the recording / reproducing apparatus 10, and the recording / reproducing apparatus 10 Supply to.

The control circuit 36 is responsive to a command from the CPU 14 to A / D converters 30 and 32 and the frame memory 3
4, D / A converters 38 and 40 and video encoder 4
Control 2

A video signal of one field is recorded on the recording track of the still video floppy disk. NTS
In the case of the C method, as shown in FIG.
5H (1H is one horizontal scanning period) is recorded. In FIG. 2, H1 is the first horizontal line, H2 is the second horizontal line, and H262.5 is the 262nd horizontal line H262.
Shows the horizontal line for the next half of.

The still video floppy contains
As a standard, it is possible to record up to 50 images in the case of field images and up to 25 images in the case of frame images. As the index, for example, a maximum of 24 images recorded on tracks # 3 to 26 and tracks # 27 to 50 is 5 × 5.
Formed into multi-images of tracks # 1 and # 2 respectively
A method of recording on (or an arbitrary track) has been proposed. With such an index screen (multi-image of 25 images), it becomes easy to search recorded images.

Further, in the present embodiment, during the first horizontal line H1 period of each track of the still video floppy, information designating a reproducing method of an image recorded on the track (reproducing time and the time to the next image is reproduced). Transition form). Further, a recording method in which an ID code and other data are recorded on the first horizontal line H1 and the second horizontal line H2 on the track on which the index screen is recorded can be considered. Figure 4
Track # 1 in which data is recorded in H1 and H2, and H1
The signal waveform of track # 2 in which data is recorded is shown in FIG. In this embodiment, the image data of the index screen is hard
When stored in the disk 16, a predetermined ID code is recorded in H2 of track # 1.

Next, the operation of this embodiment will be described.

FIG. 5 shows a flow chart of a routine for selecting a desired recorded image from a still video floppy and storing it in the hard disk 16. When a still video floppy is inserted into the recording / reproducing device 10 (S
1), the computer 12 instructs the recording / reproducing apparatus 10 to reproduce, and the index screen is displayed on the monitor 22 (S).
2). For example, as shown in FIG. 6, 25 × 5 × 5 images are displayed simultaneously. Details of the index screen display routine (S2) will be described later.

The required image is designated from this index screen and loaded into the computer 12 (S3). Captured image (eg 640 x 480 pixels or 320 x 2
40 pixels) are processed and corrected by operating the mouse and keyboard and stored in the hard disk 16 (SS5).

FIG. 7 shows the details of the index screen display routine (S2). First, the reproduction of the track # 1 is instructed, and the reproduction signal in the H2 period is analyzed (S10).
It is checked whether or not the D code is recorded (S11).
If it is recorded (S11), the hard disk 16 is searched for the index screen of the same ID code (S1).
2). If it exists (S13), the index screen data is read and displayed on the monitor 22 (S14). If it does not exist (S13), a new index screen is formed (S15). Even when the ID code is not recorded in the H2 period of track # 1 (S11), a new index screen is formed (S15).

The details of the index screen forming routine are shown in FIG. Send a playback command to the recording / playback device 10 (S
20), the reproduction track number display included in the reproduction luminance signal is read (S21), and it is determined whether or not track # 1 is reproduced (S22). The details of the reproduction track number display routine (S21) included in the luminance signal will be described later. If it is not track # 1 (S22), for example, a track down command is sent, and the playback head
Face to face 1.

Next, the recorded images on and after the track # 1 are sequentially reproduced, and are captured and displayed on the small screen of 25-screen display (S23-27). That is, the recorded image of the first track is reproduced, reduced to a small screen, and fetched. It is displayed at position 1 (S23). A track advance command is transmitted to reproduce the recorded image of the next track (S2
4) The reproduction track number display included in the reproduction luminance signal from that track is read (S25), and it is determined whether or not the track is correctly fed (S26). The track feed and the reading of the reproduction track number are repeated until the next track is correctly formed (S26).
5).

If the track is correctly fed (S2
6), the last track of the index screen display (ie 2
It is determined whether or not it has become the fifth track) (S2
7) S23 to S26 are repeated until the final track is reached. This creates index screen data,
It is taken into the computer 12.

On the reproduced video signal output from the recording / reproducing apparatus 10, the reproduction track number is superimposed in the format as shown in FIG. Reproduction track numbers are displayed in the areas 50 and 52 and areas 56 and 58, and "-" is displayed in the area 54 in the case of frame reproduction. In the case of field reproduction, the reproduction track numbers are displayed only in the areas 50 and 52, and in the case of frame reproduction, the areas 50 and 52 are displayed.
52; 56, 58, the track numbers of frame recording are displayed, and "-" is displayed in the area 54.

Since the display position or timing of the regions 50 to 58 and the font pattern of each character are known in advance, the computer 12 can analyze the display contents from the video signals in the regions 50 to 58. For example, as shown in FIG. 10, with respect to the number "6", the scanning line changes as shown in FIG. 10B, and the number "6" is displayed from the state of this change. You can know that.

A flowchart for reading characters is shown in FIG. First, the track numbers displayed in the areas 50 and 52 are read (S30), and it is determined whether or not the track numbers are correct (S31). If the track numbers are correct (S31), the area 54 is read to determine whether it is a frame image or a field image. Is determined (S32).

FIG. 12 shows the image capture routine (S in FIG. 5).
3 shows a detailed flowchart of 3). When the operator designates (S40), the computer 12 instructs the recording / reproducing apparatus 10 to reproduce the track on which the designated image is recorded by the direct access command (S41). Then, as described with reference to FIG. 11, the reproduction track number is read from the reproduction video signal from the recording / reproduction device 10 (S42).

Until the designated track is reproduced, S4
1 and 42 are repeated (S43). When the designated track is reproduced, the image data thereof is fetched and stored in the hard disk 16 if necessary (S44).

Until there is an instruction to finish the work, S40-44
Is repeated (S45).

Through the above processing, one or more desired image data are stored in the hard disk 16. Next, a procedure for registering a sequence in which the images thus stored are sequentially reproduced for presentation such as slide projection will be described. The flowchart is shown in FIG.

First, necessary image information is read from the hard disk 16 and displayed as a reduced image on the monitor 22 (S50). FIG. 14 shows an example of the display screen of the monitor 22. Below each reduced image, a display time and a transition mark for designating a transition format to the next image are attached. The display time is "
The display time (seconds) is displayed side by side after T ”. Immediate switching is used for the transition format, a method of fading in the previous image while fading out the next image, and a random pattern in the middle. There is a method, a horizontal scroll method, a vertical scroll method, etc. A mark that identifies one of these (in FIG.
(2) ") is displayed after the display of the display time. Initially, the display time and transition form are the default values.

Further, another working window for sequence registration is opened so that a plurality of sequences can be compared and examined (S51). A multi-window system that has been recently adopted in a computer may be used.

Using a mouse or the like, the display order is exchanged, the same image is displayed at different timing, and the transition format and display time are changed. In contrast to FIG. 14, the sequence is modified as shown in FIG.

After the sequence is determined in each window (S52), the sequence to be adopted is determined (S5).
3). The determined sequence is recorded on the hard disk 16.

An unrecorded still video floppy is loaded into the recording / reproducing apparatus 10 (S54), and the image information stored in the hard disk 16 is sequentially converted into a video signal in the order of the determined sequence, and the recording / reproducing apparatus 10 is operated. To the still video floppy disk (S55). At this time, as shown in FIG. 4, data regarding the display time and the transition format is recorded in the H1 period of each track, and the determined sequence is specified in the H2 period of track # 1.
Record the D code.

After the floppy disk is thus created (S55), the index screen of the created floppy disk and the ID code recorded during the H2 period of track # 1 are recorded on the hard disk 16 (S56).

FIG. 16 is a block diagram showing the structure of a reproduction adapter for controlling reproduction of the floppy disk created by the flow chart shown in FIG. Reference numeral 60 is a recording / reproducing device similar to the recording / reproducing device 10, and 62 is a reproducing adapter.
The CPU 64 of the reproduction adapter 62 sends a control command to the recording / reproducing apparatus 60 to control the reproduction and track feeding of the recording / reproducing apparatus 60.

The luminance signal and chromaticity signal reproduced from the recording / reproducing device 60 are applied to the adder 66 and the A / D converter 68. The adder 66 forms a composite signal by superposing the luminance signal and the chromaticity signal. The A / D converter 68 converts an analog signal into a digital signal, and its output is temporarily stored in the field memory 70. The field memory 70 functions as a delay means. Video encoder 7
2 converts the output of the field memory 70 into a composite signal of a predetermined format.

The reproduction luminance signal supplied from the recording / reproducing device 60 is supplied to the ID decoder 74, which decodes the data (display time and transition format) recorded in the H1 period of each track. The decrypted information is C
It is supplied to the PU 64. The CPU 64 is the ID decoder 74
The A / D converter 68, the field memory 70, and the switch 76 are controlled in accordance with the display time information and the transition type information.

The output of adder 66 and the output of video encoder 72 are provided to switch 76. CPU64
Switches the switch 76 according to the display time and the transition format information from the ID decoder 74. As a result, the output of the switch 76 is a video signal in which display images are sequentially exchanged in the sequence determined in FIG.

Although the embodiment in which the still video floppy is used as the image recording medium has been described, it is needless to say that it is an optical recording medium such as an optical disk or a magneto-optical disk or a solid-state memory device such as a D-RAM or a flash memory. It goes without saying that it is okay.

[0044]

As can be easily understood from the above description, according to the present invention, even if there is no information from the reproducing apparatus,
It is possible to know which recording area of the recording medium is being reproduced. Further, according to the image recording medium of the present invention, recorded images can be sequentially reproduced in an arbitrary designated order without complicated and troublesome operations.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of an embodiment of the present invention.

FIG. 2 is an internal circuit diagram of the interface 18.

FIG. 3 shows the recorded contents of one track of a still video floppy disk.

FIG. 4 is a signal waveform example of a still video floppy track.

FIG. 5 is a flowchart of an image selection routine.

FIG. 6 is an index screen of 25-screen batch display.

FIG. 7 is a flowchart of an index screen display routine.

FIG. 8 is a flowchart of an index screen forming routine.

FIG. 9 is an example of a reproduction image in which reproduction track numbers are displayed in a superimposed manner.

FIG. 10 is an explanatory diagram of a method of reading a reproduction track number.

FIG. 11 is a flowchart of a reproduction track number reading routine.

FIG. 12 is a flowchart of a routine for loading a designated image onto the hard disk 16.

FIG. 13 is a flowchart of a presentation sequence registration routine.

14 is an example of a display screen in FIG.

FIG. 15 is another example of the display screen in FIG.

Figure 16: Still created for presentation
It is a block diagram of a playback control circuit of a video floppy.

[Explanation of symbols]

10: Recording / reproducing apparatus 12: Computer 14: CP
U 16: Hard disk 18: Interface 20: Video circuit 22: Monitor 24: Signal line 3
0, 32: A / D converter 34: Frame memory 3
6: Control circuit 38, 40: D / A converter 42: Video encoder 50, 52, 56, 58: Playback track number display area 54: "-" display area showing a frame image 60: Recording / playback device 62: Play adapter 6
4: CPU 66: adder 68: A / D converter 7
0: Field memory 72: Video encoder
74: ID decoder 76: Switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/91 J 8324-5C

Claims (1)

[Claims] 1. An image reproduction control device for controlling the image reproduction device by reading a reproduction region from a reproduction region display image included in a reproduction image signal from the image reproduction device.