JPH11352577A - Erasing operation controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always obtain corresponding relation between an image on silver salt film and an image in a memory by erasing all the image data stored in the memory, when the silver salt film is loaded in a camera. SOLUTION: A film winding/rewinding drive circuit 56, a frame number detection circuit 55 and a flash memory 42 are provided in a camera main body. The silver salt film F is loaded by the circuit 56. The perforation of the film F is counted by the circuit 55 so as to detect the completion of the loading of the film F. When the completion of the loading is detected, all the image data stored in the memory 42 is erased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of recording an image on a silver halide film and storing digital image data corresponding to the recorded image in a memory. The present invention relates to an erase operation control device for erasing.

[0002]

2. Description of the Related Art The storage capacity of a memory for recording digital image data is limited. Therefore, a conventional camera having a memory is configured to be able to erase image data. That is, any image data can be erased by selecting an erasing mode and performing a series of erasing operations.

[0003]

However, if an erasing operation is not performed when a new silver halide film is mounted in the camera, the image recorded on the new silver halide film and the image stored in the memory correspondingly. Since the correspondence of the recording order with the image data does not match, it becomes difficult to confirm the image recorded on the silver halide film even when the image data in the memory is reproduced.

According to the present invention, when a new silver halide film is mounted in a camera, all the image data stored in the memory corresponding to the image recorded on the previous silver halide film is erased, It is an object of the present invention to obtain an erasing operation control device which can always keep the correspondence between the image of the memory and the image data of the memory.

[0005]

An erasing operation control device according to the present invention comprises: an erasing operation control means for erasing digital image data stored in a memory corresponding to an image recorded on a silver halide film; Means for determining whether or not the mounting operation for mounting the film into the camera has been completed.If the determining means determines that the mounting operation has been completed, the erasing operation control means reads the image data stored in the memory. It is characterized by erasing all.

It is desirable that the judging means judges that the mounting operation has been completed when the silver halide film has been wound up by a predetermined amount.

For example, it is determined that the winding of the silver halide film by a predetermined amount is completed by counting the perforations of the silver halide film.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a silver halide digital still compatible camera to which an embodiment of the present invention is applied.

When the camera body 11 is viewed from the front, an imaging optical system 12 having a photographic lens and the like is provided at the center of the front surface. Release switch 1 on the top of camera body 11
3, an up switch 14, a down switch 15, a mode switch 16, an erase switch 17, and a display unit 22 are provided. The finder 18 is a half mirror 20
And an eyepiece 21 and an imaging device (CCD) 19.
That is, the light incident on the finder 18 is the half mirror 2
Thus, the subject image is formed on the image sensor 19, and the subject image is observed through the eyepiece 21. The image formed on the image sensor 19 is displayed by a liquid crystal display (LCD) 23 provided on the back of the camera body 11, that is, on the back cover U.

FIG. 2 is a block diagram of a silver halide digital still camera. The system control circuit 30 is a microcomputer and controls the entire camera.

The light that has passed through the imaging optical system 12 is guided to the silver halide film F when the release switch 13 (see FIG. 1) is fully depressed, thereby recording the subject image.

The subject forms an image on the light receiving surface of the image sensor 19 in the finder 18, and a color image signal corresponding to the subject is generated. The image sensor 19 is controlled by the CCD drive circuit 31 to read out image signals. First, reset noise is removed from the image signal read from the image sensor 19 by the correlated double sampling circuit (CDS) 32. The image signal output from the CDS 32 is converted from an analog signal to a digital signal in the A / D converter 33.

When the release switch 13 is not pressed, the image signal converted to a digital signal is sent to a signal processing circuit 34. The signal processing circuit 34 performs image signal processing such as converting an image signal output from the image sensor 19 into a luminance signal and a color difference signal. The digital signal processed by the signal processing circuit 34 is directly sent to a D / A converter 35,
It is converted from a digital signal to an analog signal.

This analog signal is supplied to the LCD drive circuit 36
The image signal of the subject is sent to the LCD 23, the backlight 38 is turned on, and the moving image is displayed on the LCD 23.
It is projected on. The backlight 38 is controlled by a backlight drive circuit 39.

When the release switch 13 is fully pressed to record a still image in the silver halide film F and the memory, the digital signal for one image converted by the A / D converter 33 is temporarily stored in the field memory 40. Is done. Then, the image signal is sent from the field memory 40 to the signal processing circuit 34, where it is converted into a luminance signal, a color difference signal, and the like.
The converted image signal is compressed in the system control circuit 30, and the compressed image signal is stored in the flash memory 4.
2 is stored as image data. The control of writing and reading of the image signal to and from the field memory 40 is performed by a field memory controller 41, and the control of writing and reading of the compressed image signal to and from the flash memory 42 is performed by the flash memory controller 43.

The stored image data is read from the flash memory 42, decompressed by the system control circuit 30, and temporarily stored in the field memory 40. The image data stored in the field memory 40 is
The signal is sent to the D / A converter 34 and converted from a digital signal to an analog signal. The converted image signal is processed by the LCD drive circuit 36 and sent to the LCD 23. Through these series of operations, the still image data stored in the flash memory 42 is reproduced on the LCD 23.

The timing generator 44 controls the CCD drive circuit 31 and C
DS32, A / D converter 33, signal processing circuit 34, D /
By outputting a sample pulse or the like to the A converter 35, the LCD drive circuit 36, and the field memory controller 41, these operations are controlled.

The system control circuit 30 includes an up switch 14, a down switch 15, a mode selection switch 1
6, an erase switch 17, a release full-press switch 45, a release half-press switch 46, a power switch 47, and a back cover switch 48 are connected. Also, the system control circuit 3
0 is connected to the power supply circuit 57 and the display unit 22, and the display unit 22 displays the number of shots and the like.

A shutter (not shown) and a lens (not shown) in the image pickup optical system 12 are driven by a shutter circuit 49 and a lens driving circuit 50, respectively. The shutter is opened for a predetermined time by the shutter circuit 49 during a shooting operation. Further, the focus adjustment and the like are controlled by the lens driving circuit 50 during the distance measuring operation.

The imprint circuit 51 imprints the date of photographing on the image recorded on the silver halide film F.

In the strobe circuit 52, strobe light emission control is performed. In the photometric circuit 53, the brightness of the subject is obtained based on the amount of light detected by a photometric sensor (not shown). In the distance measurement circuit 54, the distance from the camera to the subject is obtained based on the distance measurement data detected by a distance measurement sensor (not shown).

In the frame number detecting circuit 55, the feeding amount of the silver halide film F is detected by counting the perforations of the silver halide film F.

In the film winding / rewinding drive circuit 56,
The winding and rewinding operations of the silver halide film F are controlled.

FIG. 3 is a diagram showing the correspondence between the image recorded on the silver halide film F and the image data stored in the flash memory 42. In a comparative example not using the present embodiment, when a new silver halide film F is mounted in the camera, no image is recorded on the silver halide film F yet, but the previous silver halide film is stored in the flash memory 42. The image data D1 corresponding to the image recorded on the film F is stored. Therefore, the image E recorded on the silver halide film F
And the image data D2 correspondingly stored in the flash memory 42 do not match. In contrast, in the example using the present embodiment, when a new silver halide film F is mounted, all the image data corresponding to the image of the previous silver halide film F stored in the flash memory 42 is erased, and the silver halide film F is erased. The correspondence between the image E recorded on the salt film F and the corresponding image data D3 stored in the flash memory 42 matches.

FIG. 4 is a flowchart showing a selecting operation for selecting an erasing operation mode for erasing image data stored in the flash memory 42 when the silver halide film F is mounted.

In step 101, the mode switch 16
In FIG. 1 (see FIG. 1), it is determined whether or not the erase mode for enabling the execution of the erase operation is selected. If it is determined that the erase mode has been selected by pressing the mode switch 16, the process proceeds to step 102. When the recording mode for recording an image or the reproduction mode for reproducing an image is selected by pressing the mode switch 16 and it is determined that the erasing mode is not selected, a series of selecting operations for selecting an erasing operation mode is executed. And end.

In step 102, it is determined whether or not execution of erasing the image data stored in the flash memory 42 when a new silver halide film F is mounted is selected. By pressing the up switch 14 and the down switch 15, it is selected to execute the erasing operation or not to execute the erasing operation. If it is determined that the execution of the erase operation is selected by pressing the up switch 14 and the down switch 15, the process proceeds to step 103. If it is determined that the erasing operation is not to be executed by pressing the up switch 14 and the down switch 15, the process proceeds to step 104. If neither the up switch 14 nor the down switch 15 is pressed, step 1 in the previous selection operation
The processing is performed in accordance with the same determination as the execution of step 02. When step 102 is executed in selecting the erase operation mode for the first time, the up switch 14, the down switch 15
If neither of them is pressed, it is determined that the erasing operation is performed.

In step 103, the release switch 1
It is determined whether 3 is fully pressed. If it is determined that the release switch 13 has been fully pressed, it is determined in step 105 that an erasing operation is to be performed, and a series of selecting operations is completed. If it is determined that the release switch 13 has not been fully pressed, the process returns to step 101.

In step 104, the release switch 1
It is determined whether 3 is fully pressed. If it is determined that the release switch 13 has been fully pressed, it is determined in step 106 that the erasing operation is not to be performed, and a series of selecting operations is completed. If it is determined that the release switch 13 has not been fully pressed, the process returns to step 101.

FIG. 5 is a flowchart showing the erasing operation.

In step 201, it is determined by the back cover switch 48 whether or not the back cover U is closed. If it is determined that the back cover U is closed, the process proceeds to step 202. When it is determined that the back cover U is not closed, a series of erasing operations is not performed.

In step 202, the film winding / rewinding drive circuit 56 performs loading for winding the silver halide film F by a predetermined amount.

In step 203, the frame number detection circuit 55
By counting the perforations of the silver halide film F, it is determined whether or not the loading of the silver halide film F is completed. If it is determined that the loading of the silver halide film F has been completed, the process proceeds to step 205. The silver halide film F put in the patrone is the camera body 11
It is determined that the loading is not completed when the cartridge is not set in a patrone chamber (not shown) or when the loading is not performed properly and the silver halide film F is wound up by a predetermined amount. If it is determined that the loading has not been completed, a warning or the like is displayed on the display unit 22 in step 204, and the series of erasing operations ends.

In step 205, it is determined whether or not the image data stored in the flash memory 42 should be erased when the silver halide film F is mounted. Whether or not erasing should be performed depends on the mode selected by the erasing operation mode selecting operation. If it is determined that the image data erasing operation should be performed, the process proceeds to step 206. If it is determined that the image data erasing operation should not be performed, the operation ends without performing the erasing operation.

In step 206, the flash memory 4
2 are all erased.
Then, in step 208, the fact that the image data has been erased is displayed on the display unit 22, and a series of erasing operations ends.

As described above, according to the present embodiment, by executing step 206, all the image data stored in the flash memory 42 when the silver halide film F is mounted can be erased. As a result, the correspondence between the image recorded on the newly mounted silver halide film F and the corresponding image data stored in the flash memory 42 matches. Even if it is determined that the back cover U is closed, all the image data stored in the flash memory 42 may be deleted.

[0037]

As described above, according to the present invention, when a silver halide film is mounted, all the image data stored in the memory is erased, and the data is recorded on the newly mounted silver halide film. The correspondence between the image and the image data stored in the memory corresponding thereto matches.

[Brief description of the drawings]

FIG. 1 is an outline view of a silver halide digital still dual-use camera to which one embodiment of the present invention is applied.

FIG. 2 is a block diagram showing an electric circuit and the like provided in the camera body.

FIG. 3 is a diagram showing a correspondence relationship between an image of a silver halide film and image data stored in a memory.

FIG. 4 is a flowchart showing a selecting operation for selecting an erasing operation mode.

FIG. 5 is a flowchart showing an erasing operation.

[Explanation of symbols]

 F Silver halide film 42 Flash memory (memory)

Claims (3)

[Claims] 1. An erasing operation control means for erasing digital image data stored in a memory corresponding to an image recorded on a silver halide film, and a mounting operation of mounting the silver halide film in a camera has been completed. Means for determining whether or not the image data stored in the memory is erased when the determination means determines that the mounting operation has been completed. Erase operation control device. 2. The erasing operation control device according to claim 1, wherein said determining means determines that said mounting operation has been completed when said silver halide film has been wound up by a predetermined amount. 3. The erasing operation according to claim 2, wherein the determining means determines that the winding of the silver halide film by a predetermined amount is completed by counting the perforations of the silver halide film. Control device.