JP3115008B2 - Video cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette body for accommodating, for example, in which field of a video tape an image relating to still photography performed during movie shooting is recorded. The present invention relates to a video cassette that can be stored in a circuit provided.

[0002]

2. Description of the Related Art Recently, a moving image (hereinafter referred to as a movie) has been developed.
Movie cameras have become widespread because they can easily shoot video. This movie camera generally reads light photoelectrically by irradiating light from a subject to an image reading unit equipped with a CCD or the like from an optical unit having a condensing lens, and reads a video tape stored in a video cassette via a magnetic head. The video signal is recorded on the CRT or the like as a visible image by loading the video cassette after the recording of the image signal into, for example, an image reproducing apparatus.

[0003] By the way, when a movie of a subject is shot by a movie camera of this type, there is a demand to shoot a desired still image (hereinafter referred to as a still) of the subject. That is, if it is possible to perform still shooting during movie shooting and continue movie shooting, it is possible to obtain a desired still playback image in addition to a continuous movie playback image.

[0004]

In this case, in the above-described movie camera, for example, when a two-hour videotape is used, a total of 432,000 fields are recorded to record 60 fields per second. Will be recorded. For this reason, there is a problem that, when a still is recorded in a part of a field of a movie photographed image and then the still is to be reproduced, an operation of selecting a field in which the still is recorded becomes considerably difficult.

An object of the present invention is to provide a video cassette capable of easily recording and reproducing information relating to a photographed image recorded on a video tape. I do.

[0006]

In order to achieve the above-mentioned object, the present invention provides a method for continuously shooting still images during movie shooting.
Video camera used for movie cameras that can record
A set, a cassette body for accommodating the video tape, is provided on the cassette body, when the still photographic image on the video tape in the movie recording is serial <br/> recorded continuously, the still A circuit that can electrically store information specifying a field where a captured image is recorded, and a terminal that is provided in the cassette main body and stores the information in the circuit and reads the information from the circuit. It is characterized by having.

[0007]

In the above-mentioned video cassette according to the present invention, after the circuit provided in the cassette main body is electrically connected to an image recording device or the like via a terminal, movie shooting is started on a video tape. During the movie shooting, a desired still shooting is selectively performed, and a field in which the still shot image is recorded is specified and stored in the circuit. Then, after the end of the shooting, the video cassette is loaded into, for example, an image reproducing device or the like, and its circuit is electrically connected, and the information stored in the circuit is read. Is reproduced as a visible image on a CRT or the like.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A video cassette according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a video cassette according to the present embodiment. This video cassette 10
Is a cassette main body 14 for accommodating a video tape 12 which is a magnetic tape, and an IC (integrated circuit) 16 provided on the cassette main body 14 and capable of electrically storing information related to an image recorded on the video tape 12. And a terminal 18a provided on the cassette body 14 for connecting the IC 16 to an image recording device and an image reproducing device described later.
To 18e.

The video tape 12 is accommodated in a roll form in the cassette body 14 via rotating shafts 20a and 20b.
An opening / closing lid 22 for leading an end portion 2 to an image recording apparatus and an image reproducing apparatus described later is attached.

FIG. 2 shows a movie camera 24 as an image recording device. This movie camera 24
The camera body 26 includes a camera body 26 and a grip 28. The camera body 26 is provided with an optical unit 30, a sound collecting microphone 32, and an openable / closeable strobe light emitting unit 34. Will be loaded. A shooting button 36 is provided on the grip 28.

The optical unit 30 includes a photographing lens group 38 and an aperture 4
As shown in FIG. 3, light from the subject is condensed on the image reading unit 42 having the CCD through the optical unit 30 as shown in FIG. An image processing unit 44 is connected to the image reading unit 42, and an image recording unit 46 is connected to the image processing unit 44. The image recording unit 46 includes a magnetic head (not shown) for mounting the video cassette 10 and recording an image signal on the video tape 12. The image processing unit 44 and the image recording unit 46 are connected to a control unit 48, and the AE control unit 5 controls the control unit 48 to drive the aperture 40.
0 is connected.

The strobe light emitting unit 34 includes a strobe control unit 5
2, the photographing button 36 and the data writing unit 54 are connected to the control unit 48. The data writing unit 54
And has a function of inputting information such as the field in which the still photography was performed, the photography date and time, the location, and the usage amount of the video tape 12 to the IC 16 of the cassette body 14.

Next, the operation of the video cassette 10 and the movie camera 24 configured as described above will be described.

First, the camera body 26 of the movie camera 24
Is opened, the video cassette 10 is loaded into the image recording section 46, and the terminal 18 of the video cassette 10 is
a to 18e are connected to terminals (not shown) of the image recording unit 46, and the IC 16 is connected to the control unit 48.
When the photographer operates the photographing button 36 while holding the grip 28 of the movie camera 24, the control unit 4
The signal is derived from 8 to the AE control unit 50, and the aperture 40 is driven. Next, after the light from the subject passes through the photographing lens group 38 and the aperture 40 constituting the optical unit 30,
The light is irradiated onto the image reading unit 42 and read photoelectrically, further introduced into the image processing unit 44, converted into an image signal, and introduced into the image recording unit 46.

In the image recording section 46, the opening / closing lid 22 of the video cassette 10 is opened and the end of the video tape 12 is in contact with a magnetic head (not shown). The image signal is recorded.

On the other hand, when the photographer operates the shooting button 36 during the movie shooting to select still shooting, a signal is supplied from the control unit 48 to the strobe control unit 52, and the strobe light emitting unit 34 is driven to emit light. At the same time, a signal is supplied from the control unit 48 to the AE control unit
The opening of 0 is adjusted. The light from the subject is converted into an image signal via the optical unit 30, the image reading unit 42, and the image processing unit 44 and supplied to the image recording unit 46. Recorded in the field.

At this time, a movie image is continuously recorded on the video tape 12, and a still image is recorded in a partial field of the movie image. Then, the field in which the still photographed image is recorded is specified, introduced into the image recording unit 46 from the control unit 48, and stored in the IC 16 of the video cassette 10 from the terminals 18a to 18e of the cassette body 14.

After the image signal of the desired subject is recorded on the video tape 12 in this manner, information on the subject,
For example, the shooting date and time or place, or the video tape 12
Is input to the control unit 48 via the data writing unit 54 provided in the camera body 26. Further, this information is stored in the IC 16 via the control unit 48.

Next, when the camera main body 26 is opened and the video cassette 10 is taken out from the camera main body 26, the video cassette 10 is loaded into, for example, an image reproducing device (not shown). At that time, the video cassette 10
The terminals 18a to 18e are connected to the terminals of the image reproducing apparatus, and the information stored in the IC 16 is displayed on a display unit (not shown). Further, an image signal recorded on the video tape 12 is read by a reading head (not shown), and a movie image and a still image are displayed as a visible image on a CRT or the like.

In this case, in this embodiment, an image related to still photography performed during movie photography is recorded on the video tape 12.
Which field is recorded in the IC 16 is stored. Therefore, when the still image is reproduced by the image reproducing apparatus, the field in which the still image is recorded can be easily and quickly selected, and the operation of reproducing the still image is efficiently performed. The effect is obtained. In particular, in the case of the video tape 12 capable of long-time shooting, the number of fields in which an image is recorded is considerably increased. There is an advantage that selection of a field for still photography is simplified at once.

Moreover, various kinds of information relating to the movie shooting and the still shooting are stored in portions other than the video tape 12,
That is, since the data is stored in the IC 16 provided in the cassette body 14, even after the image signal is recorded on the video tape 12, the data
By operating the image reproduction apparatus or the like, there is an effect that the information can be changed and new information can be added easily and efficiently. In addition, if a nonvolatile storage means (for example, E ² PROM) is used for the IC 16, a power source for storing information is not required, and the IC 16 can be easily mounted on the cassette body 14.

[0023]

According to the video cassette of the present invention,
The following effects can be obtained.

When still photography is performed during movie photography, the field in which the still photography image is recorded is specified and stored in a circuit provided in the cassette body of the video cassette. By reading the information stored in the circuit, the recorded still is easily selected and reproduced as a visible image on a CRT or the like. Further, the change or addition of this information is easily and efficiently performed through the circuit of the cassette body.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a video cassette according to the present invention.

FIG. 2 is an explanatory diagram of a movie camera into which the video cassette is loaded.

FIG. 3 is a block diagram of the movie camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Video cassette 12 ... Video tape 14 ... Cassette main body 16 ... IC 18a-18e ... Terminal 24 ... Movie camera 26 ... Camera main body 30 ... Optical part 34 ... Strobe light emission part 46 ... Image recording part 48 ... Control part 54 ... Data writing Department

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/7826 G11B 23/087 H04N 5/783 G11B 15/07

Claims (1)

(57) [Claims] 1. A method for continuously shooting still images during movie shooting.
Video cassettes used in movie cameras that can record
A preparative, a cassette body for accommodating the video tape, is provided on the cassette body, when the still photographic image on the video tape in the movie shooting is recorded continuously, the still photography image is recorded A circuit capable of electrically storing information specifying the specified field, and a terminal provided in the cassette main body, for storing the information in the circuit, and for reading the information from the circuit. Video cassette.