JP2892682B2 - Multi-screen display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a display screen area divided into a plurality of areas,
For example, the present invention relates to a multi-screen display device capable of efficiently displaying a plurality of pieces of image information stored in a recording medium of a semiconductor memory such as a floppy disk or an IC card.

[Related Art] In recent years, semiconductor memories such as floppy disks and IC cards have been actively used as recording media for various kinds of information. For example, many electronic still cameras that electronically image a subject using a solid-state imaging device such as a CCD are configured to use a floppy disk as a recording medium for recording the electronic still image. The floppy disk used in this type of electronic still camera has a diameter of 2 inches generally called an SVF (still video floppy disk), and the electronic still image is recorded on the disk-shaped magnetic recording surface of the SVF. About 50 recording tracks are formed concentrically, and an electronic still image is magnetically stored for each of these recording tracks.

Hereinafter, the above-mentioned floppy disk (SV
To explain an electronic still camera using F) as an example, the reproduction of an electronic still image stored in the SVF is performed by loading the SVF2 into the image reproducing device 1 and recording the SVF2 as shown in FIG. This is performed by reading an electronic still image recorded on a track and displaying the image using a display 3 such as a television receiver.

For example, as shown in FIG. 4, the image reproducing apparatus 1 rotates the SVF 2 at a predetermined rotational speed by a spindle motor driving unit 11 and a SVF 2 by a head 13 moved in a radial direction of the SVF 2 by a head driving unit 12. , The information (electronic still image) recorded on the recording track is read, or the information (electronic still image) is written. The reading and writing of the electronic still image is selectively controlled by switching the switch 14 to connect the head 13 to a signal reproducing system or a signal recording system.

The control unit 15 controls the operations of the spindle motor drive unit 11 and the head drive unit 12 according to the operation mode setting information input from the operation unit 16 such as a key switch. The operation of the signal recording system is controlled to control the reading of the electronic still image from the SVF2 and the writing of the electronic still image to the SVF2.

The signal reproduction system and the signal recording system will be described.
The above signal recording system is basically an input circuit section 21, an FM modulation section 22,
The signal reproduction system includes a recording circuit unit 23, and the signal reproduction system includes a reproduction circuit unit 31, an FM demodulation unit 32, a field memory circuit 33, a signal processing unit 34, and an output circuit unit 35.

The input circuit unit 21 of the signal recording system inputs an electronic still image (video signal; Video) given as an NTSC signal or the like,
The signal is subjected to predetermined signal processing such as conversion into a luminance signal (Y signal) and a color difference signal (RY / BY signal). The FM modulator 22 converts the luminance signal and the color difference signal into FM signals, respectively. Modulate. At this time, the FM modulation unit 22 outputs the color difference signal (RY / BY).
Signal) in line-sequential form.

Then, the recording circuit unit 23 mixes the luminance signal and the chrominance signal FM-modulated as described above,
A recording current required for recording a signal to the recording medium is generated according to the mixed signal. This recording current is supplied to the head 13 via the switch 14, and the electronic still image (video signal; Video) is recorded on the SVF2.

Although the image reproducing apparatus 1 having a function of recording an image signal is shown here, the image reproducing apparatus 1 may of course be configured without the above-described signal recording system (recording function of an image signal). That is.

On the other hand, the reproduction circuit unit 31 of the signal reproduction system reproduces and amplifies the signal read from the SVF 2 from the head 13 via the switch 14 to obtain a reproduction RF signal. FM demodulation unit 32
The signal is FM-demodulated to obtain a luminance signal and a color difference signal, and are recorded in the field memory circuit 33 over one image. The signal processing unit 34 performs, for example, dropout compensation, skew distortion correction, and synchronization processing on a reproduced color difference signal with respect to the reproduced signal obtained from the FM demodulation unit 32 or the reproduced signal recorded in the field memory circuit 33. Signal processing is performed, and the signal subjected to such signal processing is output as a video signal such as an NTSC signal via the output circuit unit 35. Such a video signal is supplied to the display 3 to output and display an electronic still image.

The field memory circuit 33 records and holds the electronic still image read from the SVF2, and repeatedly reads and outputs the electronic still image to realize the continuous image reproduction separately from the reading of the electronic still image from the SVF2. It is for.

Now, in the image reproducing device 1 configured as described above,
The display screen of the display 3 is divided into a plurality of display areas,
There is a display mode in which a plurality of electronic still images recorded in the SVF 2 are reduced and displayed in each of the divided display areas. The display screen formed by this display mode is called a multi-screen, and a plurality of electronic still images are collectively displayed in each of the divided display areas to display the contents of the electronic still images recorded on each recording track of the SVF2. It is used as a display form when roughly examining.

In this multi-screen display, 50 recording tracks are formed on the SVF2, and an electronic still image is recorded corresponding to each recording track, and the display 3 takes into account the size of the display screen and the like. For example, the display screen is divided vertically and horizontally into five to set 25 divided areas, and 25 electronic still images are displayed collectively using these divided display areas. Specifically, the electronic still images read from the SVF2 are respectively reduced in the memory areas of the field memory circuit 33 corresponding to the plurality of divided display areas which are divided and set with respect to the display screen as described above. Thus, a multi-image in which 25 reduced electronic still images are arranged vertically and horizontally by 5 sheets is formed. And this field memory circuit 33
The multi-image display is performed by reading out the multi-image formed on the display 3 and giving it to the display 3.

[Problems to be Solved by the Invention] However, the multi-screen display performed by such an image reproducing apparatus 1 generally converts an electronic still image written on each of the recording tracks of the SVF 2 into an electronic still image according to its track number. It is merely performed by sequentially distributing and arranging the plurality of divided display areas to form a multi-image. For this reason, depending on the recording mode of the electronic still image recorded in the SVF2, there may be cases where it is not possible to perform the multi-screen display by effectively using the number of regions of the multi-screen display set in division.

That is, as a recording form of the electronic still image in SVF2,
A format in which one field image is recorded for each recording track, and one frame image composed of an odd field image and an even field image is recorded over two consecutive recording tracks with the field image as a unit. There is a format. When the electronic still image is field-recorded, the image reproducing device 1 normally stores the field image in the field memory circuit 33, and converts the one field image into an odd field image and an even field image. Is generated and an image signal is output, whereby the image is reproduced. When the electronic still image is frame-recorded, the odd-numbered field image and the even-numbered field image are read out from two continuous recording tracks, and the image signals are output, thereby reproducing the image.

In the case where the electronic still images are sequentially read out from the SVF2 on which the frame images are recorded in accordance with the track numbers and are displayed on a multi-screen, similar (almost identical) field images read out from two consecutive recording tracks are respectively displayed. Will be done. In other words, there is a problem that both of the two field images related to the same image are displayed. Therefore, the same image is displayed two by two at the time of displaying the frame image on the multi-screen, and there is a problem that information of only half of the electronic still images can be collectively displayed as compared with the number of the divided display areas. Was.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a highly practical multi-screen display system capable of efficiently displaying multiple pieces of image information according to a recording medium of a plurality of pieces of image information recorded on the recording medium. It is in.

[Means for Solving the Problems] The present invention provides a method for transferring image information and identification information from an information recording medium in which image information and identification information indicating a recording mode of the image information are recorded in a recording area set on the information recording medium. In a multi-screen display device for reading and displaying image information on a multi-screen, a first display mode means for displaying the recorded image information on a multi-screen in accordance with the management order of the recording areas, and displaying the image information respectively recorded in the respective recording areas Second display mode means for selectively extracting based on management information determined by identification information indicating a recording mode and displaying a multi-screen,
A multi-screen display device for selectively activating these display mode means.

[Operation] According to the present invention, by selectively activating the first or second display mode means, the image information recorded when the first display mode means is activated is stored in the recording area. Multi-screen display is performed according to the management order, and when the second display mode means is activated, image information recorded in each recording area is selectively extracted based on management information determined by identification information indicating a recording mode. Multi-screen display. As a result, a large number of pieces of information are efficiently displayed collectively by effectively using the limited number of divided display areas of the multi display screen.

Embodiment Hereinafter, a case where a multi-screen display device according to an embodiment of the present invention is applied to an electronic still camera will be described with reference to the drawings.

The method of this embodiment is realized by being applied to, for example, the image reproducing apparatus 1 shown in FIGS. 3 and 4 for reproducing an image signal recorded in the SVF2. The image reproducing apparatus 1 has a function of reading out image signals recorded on a plurality of recording tracks of the SVF 2 and reproducing and outputting the signals.
The display screen of the display 3 is divided and set into a plurality of regions in response to the setting of the multi-screen display mode from, and a multi-screen display function is provided for collectively displaying independent images for each of these regions. .

This multi-screen display function divides and sets the memory area of the field memory circuit 33 corresponding to each of a plurality of divided display areas which are divided and set, for example, in a grid pattern on the display screen of the display 3. The information (field image signal) of the electronic still image sequentially read from the SVF 2 is written in each memory area in a reduced process, and a multi-image is formed on the field memory circuit 33, which is output to the display 3 for image display. It is realized by doing.

In this embodiment, the display screen of the display 3 is divided vertically and horizontally into five parts, and 25 divided display areas are set in a matrix to perform multi-screen display.

This embodiment is characterized in that a plurality of pieces of image information (field image information) recorded on each recording track of the SVF2 are recorded on the multi-display screen set as described above. A first display mode in which the image information (field image information) recorded in each of the recording areas is read in accordance with a predetermined rule, for example, in an odd track, according to a predetermined rule. A second display mode for sequentially and selectively extracting only image information (field image information) of a number and displaying a multi-screen,
The point is that the first and second display modes are selectively switched in accordance with the recording mode of the image information recorded in F2 to perform multi-screen display.

The switching of the display mode may be performed, for example, by operating a mode switching switch provided in the operation unit 16, or by identifying and detecting information indicating a recording mode of image information recorded in the SVF2. The switching may be automatically performed.

Specifically, the automatic switching of the display mode is performed in such a way that the type information of the electronic still camera using the SVF is written in advance for each SVF2, and the type information is loaded when the SVF2 is loaded into the image reproducing device 1. What is necessary is just to identify and detect whether the recording mode of the image information read and recorded in the SVF 2 is field recording or frame recording determined by the function of the electronic still camera. Or 1
When a field recording image and a frame recording image are mixed on one SVF2, an identifier indicating the recording form of the image information recorded therein is recorded for each recording track, and the image reproducing device 1 It is also possible to read this identifier information when loading the SVF2 into the, to manage the recording form of the image information recorded on each recording track, and to control the above-mentioned automatic switching of the display mode according to the management information. is there.

According to the present embodiment having such a multi-screen display function, the concept is schematically shown in FIG.
A first multi-display screen (field image screen) for collectively displaying the images read from each recording track in accordance with the order of the track numbers for managing the recording tracks of the SVF2, and a track read out from the recording track with an odd track number. It is possible to selectively display a second multi-display screen (frame image screen) for displaying images collectively.

The field image screen of FIG. 1 selectively switches between a multi-screen display for the first half field image of the field image recorded on each of the 50 recording tracks and a multi-screen display for the second half field image. It is shown that it is possible. In addition, in the display mode of the first multi-display screen, for example, a track number for specifying a field image at the start of display is designated, and 25 field images are read out in order from the designated recording track, and Display control such as screen display is performed.

Therefore, in the case of this embodiment having such two types of multi-screen display modes, it is possible to perform multi-screen display according to the recording mode of the image information recorded in the SVF2 by switching and setting the display mode. Becomes possible.
Therefore, when the image information recorded in SVF2 is frame-recorded, it is possible to display only one of the paired two field images by setting the second display mode. In the example, all the image information recorded in SVF2 can be displayed on a multi-screen collectively. In addition, by displaying both pairs of field images constituting the frame image, there is no waste of displaying substantially the same two images at a time, and a limited number of divided display screen areas can be effectively used. A lot of image information can be displayed.

FIG. 2 shows a flow of a processing procedure for controlling such multi-screen display. The multi-screen display is designated by a selective switch operation from the operation unit 16 (step a), and is activated upon judging that the operation instruction is the designation of the multi-screen display mode (step b). When the multi-screen display mode is designated, it is determined whether to continuously display images according to the track number of the SVF2 (step c). This determination is made by checking the state of the mode switch when the switching of the display mode is designated by the operation unit 16, and setting the display mode according to the recording mode of the image information recorded in the SVF2. In this case, the determination is performed by determining whether the image information recorded in the SVF 2 is a field-recorded image or a frame-recorded image in accordance with the management information described above.

According to such a determination result, when the first display mode is set or when the image information recorded in SVF2 is a field recording image, each recording track is managed according to the track number that manages the recording track of SVF2. Are continuously displayed on the multi-screen (step d). Conversely, when the second display mode is set, or when the image information recorded in SVF2 is a frame recorded image, according to a predetermined rule,
For example, according to the odd track number, the odd field images recorded on the recording tracks are selected and extracted continuously and displayed on a multi-screen (step e). That is, of the two field images constituting the frame image, only the odd field images recorded on the odd tracks are sequentially and selectively read, and the multi-screen display is performed.

Thus, according to the present system in which the display mode of the multi-display screen is selectively set as described above and the image information is displayed on the multi-screen, even if the image information recorded in the frame is displayed, the same type of image (frame) is displayed. The two field images constituting the image are not displayed two by two, and a large number (here, 2
It is possible to display different types of images.
Therefore, the multi display screen can be arranged without waste, and effects such as facilitating confirmation of a plurality of pieces of image information can be obtained.

Note that the present invention is not limited to the above-described embodiment. Here, an example is shown in which a multi-display screen in which 25 divided areas are set is used, but the number of screen divisions may be determined according to system specifications. Further, in the embodiment, particularly, control of multi-screen display for a field image or a frame image obtained from an electronic still camera is shown, but the same can be applied to a case where other image information is displayed on a multi-screen. Furthermore, SVF
The present invention can be similarly applied to a case where not only image information recorded in a multi-screen display but also a plurality of pieces of image information recorded in a semiconductor memory such as an IC card in a divided area are displayed on a multi-screen. Also, the rules for selecting and extracting image information used in the second display mode may be determined according to the type of image to be displayed on the multi-screen, and the point is that the present invention departs from the gist thereof. Various modifications can be made without departing from the scope.

[Effects of the Invention] As described above, according to the present invention, according to a recording medium of a plurality of pieces of image information recorded on a recording medium, a highly practical multi-screen capable of efficiently displaying the image information on a multi-screen. A display device can be provided.

[Brief description of the drawings]

FIG. 1 is a view conceptually showing an example of a multi-display screen displayed by a multi-screen display method according to an embodiment of the present invention.
FIG. 3 is a diagram showing an example of a processing procedure of multi-screen display control in the system of the embodiment, FIG. 3 is a schematic configuration diagram of an image reproduction system, and FIG. 4 is a block diagram showing a general configuration example of an image reproduction device. . 1 image reproducer, 2 SVF (recording medium), 3 display, 13 head, 15 control unit, 16 operation unit, 33 field memory circuit, 35 output circuit Department.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04N 5/262-5/28 H04N 5/91-5/93

Claims (1)

(57) [Claims] An image information and identification information are read out from an information recording medium in which image information and identification information indicating a recording form of the image information are recorded in a recording area set on the information recording medium, and the image information is read out. A first display mode means for displaying recorded image information in a multi-screen according to the management order of the recording areas; and recording the image information recorded in each of the recording areas. Second display mode means for selectively extracting based on the management information defined by the identification information indicating the form and displaying a multi-screen, and selectively activating these display mode means. Multi-screen display device.