JP3102720B2 - Multi-image erasing method for electronic still cameras - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for seeking contents recorded on a track and storing each image in a memory circuit when the floppy disk is started, so that the contents of the floppy disk can be displayed on 25 screens before recording or reproducing operation. The present invention relates to a multi-image display method of an electronic still camera for displaying a multi-image image by using an improved erasing circuit for erasing an image (small screen) of a specific track.

[0002]

2. Description of the Related Art When playing back or erasing an image on a floppy disk taken by an electronic still camera, for example, nine screens, sixteen screens, and twenty-five screens are used to check in advance which track is photographed and what subject is photographed. A circuit portion for displaying a multi-screen such as a screen is provided. Regarding the multi-screen display, there are a method of displaying a multi-screen of the number of images designated by an operator's operation, a method of automatically displaying a multi-screen of a predetermined number of images by starting a floppy disk, and the like. is there. In the electronic still camera system, by viewing the multi-screen on the display unit in this way, it is possible to easily delete an image that failed to be photographed or an unnecessary image and record another image again in the deleted portion. Has features.

In a conventional electronic still camera, when an image of a certain track on a floppy disk is deleted while a multi-screen is displayed, there are the following multi-screen processing methods. First, even if the image on the recording track is deleted, the corresponding sub-screen of the multi-screen is not deleted (Japanese Patent Laid-Open No. 1-1772).
86). Sub-frame frame filling method Skips unrecorded tracks, sequentially records recorded track images, and displays multiple screens with sub-screens of only recorded tracks. A multi-display screen is not created with the erasure of the recording track, and therefore, it is to confirm whether or not the erasing operation has been normally performed on the multi-screen after re-seek (Japanese Patent Application No. 4-11477).

[0004]

[0007] The above-mentioned method is the same as that shown in FIG.
As shown in FIG. Even if track 6 is deleted, the multi-screen NO. The sub-screen corresponding to track 6 remains unchanged before and after erasure, and the image before erasure of the erasure track is displayed on the multi-screen, so that the contents of the floppy disk and the multi-screen do not match, The contents of the floppy disk cannot be accurately grasped. According to the method described above, when an image on a certain track is to be erased and a multi-screen is to be viewed, re-seek is required, so that multi-screen display after erasing a certain track image requires time. Further, when the multi-screen display is performed by re-seek, the screen corresponding to the erased track 6 disappears as shown in FIG. The image of the track No. 7 is NO. Tracks 6 are displayed one by one, and the subsequent images are sent one by one and displayed. A new multi-screen is displayed in a new frame-filled state. There was a drawback that it was difficult to confirm whether or not it was done.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems. By erasing an image of a track to be confirmed on a multi-screen, the erasure can be performed on the multi-screen simultaneously without any special operation. An object of the present invention is to provide a multi-image erasing method of an electronic still camera capable of replacing a power screen with a data display indicating erasure.

[0006]

In order to achieve the above-mentioned object, a multi-image erasing method of an electronic still camera according to the present invention seeks each recorded track when a floppy disk is started, and stores each image in a memory circuit. In a multi-image display system of an electronic still camera for displaying a multi-screen by storing, an erasing track specifying means for specifying a track for erasing an image and an erasing display data section for supplying erasing display data to the memory circuit Switch means for switching and connecting the output of the erasure display data section and the reproduced image to the input of the memory circuit; an erasure circuit for erasing a designated track; and an erasure track designated by the erasure track designation means. The erase circuit is operated to erase the image data of the designated track on the disk and It is constituted by a control means for controlling to write the erase display data the deletion display data unit output to the specified track corresponding address connected to the memory circuit input by switch means.

Further, in addition to the above configuration, the present invention further comprises an empty track display data section for outputting display data different from the erasure display data output by the erasure display data section. An empty track display data section output is connected to the memory circuit input to write the empty track display data in an address space corresponding to the empty track, so that the display of the empty track and the erased track on the multi-screen are made different. .

[0008]

According to the above construction, the corresponding images on the multi display screen are simultaneously erased without seeking all the tracks of the floppy disk again. In particular, if the display data of the empty track and the erased track are displayed differently, for example, a blue back in the case of an empty track, and a black back for the erased track, if the image was not originally stored on the multi-screen, It is easy to determine whether or not the image has been deleted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a diagram showing an example of a multi-screen when a certain image is erased by the multi-image erasing method according to the present invention. When nine screens are displayed, the display is as shown in (a). In this state, for example, NO. When an image of the house of the track No. 6 is selected and erased, the NO. 6 is erased and the multi-screen NO. The child screen corresponding to track 6 is also (b)
Is erased as shown in FIG.

FIG. 2 is a diagram showing an example of another multi-screen when a certain image is erased by the multi-image erasing method according to the present invention. This is a 25-screen display, as shown in FIG.
On the page, an image corresponding to 1 to 25 tracks is displayed, and on the second page, an image corresponding to 26 to 50 tracks is displayed. For example, NO. When an erasing operation is performed by designating the track No. 1, the NO. The image of the track No. 1 is erased, and at the same time, as shown in FIG. The sub-picture of the address (0000 0001) corresponding to one track is deleted.

FIG. 3 is a circuit diagram showing an embodiment of a circuit of an electronic still camera to which the multi-image erasing method according to the present invention is applied. First, the recording side circuit will be described. Light from a subject not shown passes through the lens 1 and the aperture 2 to form an image on the CCD 3. The optical image formed on the CCD 3 is converted into an electric signal, and a signal processing circuit 5 creates a color difference signal and a luminance signal. The iris / CCD control circuit 4 controls the iris of the iris 2 based on the luminance signal from the signal processing circuit 5 to make the exposure proper. Further, the shutter speed can be changed in several steps by adjusting the accumulation time of the CCD 3 based on an instruction from the key input circuit 10. The luminance signal and the color difference signal from the signal processing circuit 5 are sent to the CPU and the system control unit 8 and the recording / erasing circuit 6, respectively. The CPU and the system control unit 8 control the entire camera by receiving signals from the respective circuit units, and also have functions of AF control and display drive control. The CPU and the system control unit 8 transmit an AF control signal to the lens driving unit 12 by extracting a high-frequency component from the luminance signal and performing an integration process, and perform focusing control of the lens 1. The display unit 9 converts the luminance signal and the color difference signal into signals that can be displayed, and displays the subject image on the display unit 9.

Further, a control signal is sent to the servo control and drive circuit 14 to drive and control the floppy disk 15 at a predetermined rotation speed. In the photographing mode, a drive signal is sent to the head drive circuit 13 to cause the head 16 to seek an empty track on the floppy disk 15. The recording / erasing circuit 6 operates the release button 26 to FM-modulate the luminance signal and the color-difference signal of the signal processing circuit 5 based on the information sent from the CPU and the system control unit 8.
The recording current is adjusted so that the modulated wave is recorded at an appropriate level. The head 16 records a photographed image on an empty track of the floppy disk 15 sought by the recording current. In the field recording, the floppy disk 15 can record 50 images on 1 to 50 tracks. The main switch 11 reproduces from the recorded floppy disk,
The key input circuit 10 switches a camera to a mode for erasing or the like and starts the camera. A key input circuit 10 is used to select a track to be played or erased, an erasing mode key for selecting an erasing mode, and an image of the selected track. An erase key, a play key, a stop key, and the like for erasing are provided.

Next, the reproduction side circuit will be described. The reproducing side includes a reproducing circuit 7 and a multi-screen circuit block. The reproducing circuit 7 demodulates the FM modulated wave read from the floppy disk 15 by the head 16, returns the signal to a luminance signal and a color difference signal, and further converts the signal into an NTSC signal or the like for display on a monitor (not shown) to convert the video signal. Output. The multi-screen block receives a demodulated signal from the reproduction circuit 7 based on a control signal from the CPU and the system control unit 8, creates a preset or specified number of multi-screens, and sends it to the reproduction circuit. An A / D converter 18 for A / D converting the demodulated signal of the reproduction circuit 7, an erasure display data section 19 for storing a signal indicating erasure, and an A / D converter 18 and an erasure display data section 19. A changeover switch 20 for switching the output, the output of the changeover switch 20 is used as storage data, and one screen is divided into a designated number of address spaces, and data is stored in each address space in the order of input, or a designated address space. , A D / A converter 2 for returning read data from the memory circuit 21 to an original analog signal
2 and a memory control circuit 17 for controlling a changeover switch 20, an A / D converter 18, a memory circuit 21, and a D / A converter 22 according to control signals from the CPU and the system control unit 8. Erase display data part 1
Reference numeral 9 has blue-back data as erase display data.

FIG. 4 is a flowchart for explaining the recorded image erasing operation of the circuit of FIG. Main switch 1
1 is turned on (Step (hereinafter referred to as "S"))
1), the CPU and the system control unit 8 determine whether or not the floppy disk 15 is mounted on the disk drive (S2), and if the floppy disk 15 is not yet mounted, a warning to that effect is displayed on the display unit 9. Is displayed. When the mounting of the floppy disk 15 is confirmed, it is confirmed that the claw is not broken, and the head 16 is set to NO. From one track NO. It seeks up to 50 tracks to determine the presence or absence of an image on each track, and captures a multi-screen (S3). The capture of the multi-screen is performed as follows. Since all tracks are to be checked, the CPU and the system control unit 8 instruct the memory control circuit 17 to form two pages of 25 multi-screens. The address space of the memory circuit 21 is divided into 25, that is, up to addresses (0000 0001 to 0000 0025), and data is sequentially stored in each address space. NO. The image data read out sequentially from one track is reproduced by the reproducing circuit 7,
The signal is converted into a digital signal by the A / D converter 18 and the address (0000 0001 to 0000 0025) via the changeover switch 20.
Are stored in order. If there is a track that has not been recorded in the middle, the changeover switch 20 switches to the erasure display data section 19 side, and the blue-back data is stored at the corresponding address.

When the creation of one page is completed, the process proceeds to page 2, and the image read out in the same manner is stored in the memory circuit 21. The 25 multi-screen data created in the memory circuit 21 in this manner is converted into an analog signal by the D / A converter 22, and displayed on a monitor (not shown) via the reproduction circuit 7. The key input circuit 1 determines whether the first page or the second page has 25 multi-screens.
It can be specified by key operation from 0. In the next S4, it is determined whether or not the operator has operated the erase mode key of the key input circuit 10, and if the erase mode key has not been operated, the mode shifts to another mode. When set to erase mode,
Next, it is determined whether or not the floppy disk 15 is write-protected and all the tracks are empty tracks (S
5) If the track is write-protected or all of the tracks are empty, a warning process is performed. If the track can be erased, a message to that effect is displayed. The operator can specify a track to be erased by using a track selection key of the key input circuit 10. Here, as shown in FIG. The case where the image of one track is deleted will be described. The operator presses the number 1 key (S6), and then presses the delete key (S7).

When the key operation is performed, the CPU and the system control unit 8 control the head drive circuit 13 to control N
O. 1 and the recording / erasing circuit 6 is activated and an erasing current is passed through the head 16 so that the NO. Erase the contents of track 1. At the same time, the control signal for switching the changeover switch 20 to the erasure display data section 19 and the NO. 1
Is transmitted. Memory control circuit 1
7 is NO. Address (0000) corresponding to the track information of No. 1
0001) to the memory circuit 21 and the changeover switch 20
Switch. As a result, the blue-back data is written in the address (0000 0001) space of the memory circuit 21, and the 25 multi-screen on the monitor becomes NO. One track sub-screen becomes a multi-image with a blue background. Further, it is determined whether or not there is an image to be continuously deleted (S8).
Return to 5.

FIG. 5 is a diagram showing an example of a multi-screen when a certain image is erased by another embodiment of the multi-image erasing method according to the present invention. This makes it possible to discriminate whether the track was an empty track from the beginning or whether the track became an empty track by erasing. Before erasure, as shown in (a),
NO. Track No. 9 has a blue-back display indicating that it is an empty track. When track 6 is erased, that track is displayed in black back as shown in FIG.

FIG. 6 is a block diagram showing another embodiment of the circuit of the electronic still camera to which the multi-image erasing method according to the present invention is applied. 3 are the same circuit parts. When the empty track display data section 23 is added to the multi-image block and an empty track is displayed, the changeover switch 25 is set to the empty track display data section 2.
3 is connected to the memory circuit 21 by switching. As a result, the blue-back data is written in the address space corresponding to the empty track. When the reproduced image is erased by displaying the multi-screen, the head 16 is positioned on the erase track, an erase current is applied to erase the image, and the changeover switch 25 switches the output of the erase display data section 19 to the memory circuit 21.
Switch connection. As a result, black back data is stored in the address space corresponding to the erased track, and black back is displayed on the erased child screen.

[0019]

As described above, according to the present invention,
In the multi-image display method of an electronic still camera that displays multiple tracks by seeking each recorded track and storing each image in the memory circuit when the floppy disk is started, the track images that can be confirmed on the multi-screen are deleted. The sub-screen to be deleted on the multi-screen at the same time without any special operation
There is an effect that the contents of the floppy disk and the sub-screen of the multi-screen can always be made consistent with each other by replacing the data display with data indicating erasure.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an image erased by a multi-image erasing method of an electronic still camera according to the present invention.

FIG. 2 is a diagram showing another example of an image erased by the multi-image erasing method of the electronic still camera according to the present invention.

FIG. 3 is a block diagram showing an embodiment of a circuit of an electronic still camera to which a multi-image erasing method according to the present invention is applied.

FIG. 4 is a flowchart for explaining a recorded image erasing operation of the circuit of FIG. 3;

FIG. 5 is a diagram showing an example of an image erased by another embodiment of the multi-image erasing method of the electronic still camera according to the present invention.

FIG. 6 is a block diagram showing another circuit embodiment of the electronic still camera to which the multi-image erasing method according to the present invention is applied.

FIG. 7 is a diagram showing an example of a conventional multi-image erasing method.

FIG. 8 is a diagram showing another example of a conventional multi-image erasing method.

[Explanation of symbols]

 Reference Signs List 1 lens 2 aperture 3 CCD 4 aperture / CCD control circuit 5 signal processing circuit 6 recording / erasing circuit 7 reproduction circuit 8 CPU and system control circuit 9 display unit 10 key input circuit 11 main switch 12 lens drive unit 13 head drive circuit 14 servo Control and drive circuit 15 Disk 16 Head 17 Memory control circuit 18 A / D converter 19 Erase display data section 20 Changeover switch 21 Memory circuit 22 D / A converter 23 Free track display data section

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-302886 (JP, A) JP-A-4-302885 (JP, A) JP-A-4-10878 (JP, A) JP-A-3-302 222591 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/76-5/937 H04N 5/225-5/247

Claims (2)

(57) [Claims] In a multi-image display method of an electronic still camera for displaying a multi-screen by seeking each recorded track and storing each image in a memory circuit when a floppy disk is started, a track for erasing an image is used. Erase track designating means for designating; an erase display data section for supplying erase display data to the memory circuit; and a switch for switching and connecting an output of the erase display data section and a reproduced image to an input of the memory circuit. An erasing circuit for erasing a designated track; and when an erasing track is designated by the erasing track designating means, the erasing circuit is operated to erase image data of a designated track on a disk, and A switch means connects the output of the erasure display data section to the input of the memory circuit to Multi-image erasing method of an electronic still camera which is characterized in that a control means for controlling to write the erase display data to dress. 2. An empty track display data section for outputting display data different from the erasure display data output by the erasure display data section is provided. For an empty track, the output of the empty track display data section is performed by the switch means. 2. The electronic still camera according to claim 1, wherein the empty track display data is written to an address space corresponding to an empty track by connecting to the memory circuit input, and the display of the empty track and the erased track on the multi-screen is made different. Multi-image erasing method.