JPS5859682A - Video signal processing device - Google Patents

Abstract

PURPOSE:To make information of the object to be picked up easily in a TV picture receiver or the like, by providing a signal processing device in a camera to record negative film information as positive information on a recording medium by an electronic camera. CONSTITUTION:A signal processor 20 inverts negative information to positive information and is provided with a projector 22. In case that the information of the object to be picked up of a negative film 25 is recorded on a magnetic disc 11, a negative/positive inverting switch 21 is depressed to invert negative information in the processor 20 to positive information. This film 25 is arranged on a projecting plate 26 of the projector 22 so as to be matched to a through hole 27 and is irradiated through a filter 28 by a lamp 24. Thus, the information of the object to be picked up from the film 25 is supplied as an optical image to a photodetector 9 through a mirror 29, a lens 30, and a camera-side lens system. The photodetector 9 converts the inputted optical image to an electric signal, and a positive image is obtained through the processor 20 and is recorded on the recording medium 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a video signal processing device, especially a Ktili1 physical image element (for example, C0D), obtains an electrical video signal from an optical image obtained through an optical system, and converts this video signal into The present invention relates to a video signal processing device suitable for use in a so-called electronic still camera, etc., in which information is recorded on a rotating magnetic disk, for example.

As this kind of electronic still camera, for example, the one shown in No. 1- was previously proposed by the present applicant. That is, in FIG. 1, (I) is a camera housing, and inside this housing (1), a lens system (2) is installed like a normal camera.
, iris mechanism (3), shutter button (4), shutter mechanism (5) that works with this button (4), no-hunler (6), n-hunler (7), and viewfinder (8)
is provided.

In addition, as a part unique to electronic still cameras, there is a photodetector (9) using, for example, COD, for photoelectrically converting the light transmitted through the half-2-color (6) into an electrical signal, and this photodetector (
9) A signal processing device for processing the output signal from the signal processing device to obtain a video signal, and a magnetic head (US , a motor a for rotating and pivoting the magnetic disk αυ, and a jacket A4 for housing the magnetic disk aυ.This jacket (04) is inserted into the main body from the outside of the housing (1). It is said to be a structure. In addition, one image is concentrically recorded on each track on the magnetic disk αυ. The reproduced video signal of this image is a fist, ζ, and roller that can be seen by a normal television receiver, and the subject information that has already been captured on negative film by a normal camera is transferred to a normal raw subject. The information on the subject is stored on a magnetic disk in the same way as the recorded information, and when desired, the stored subject information can be displayed on a television receiver or the like.

Therefore, the present invention has been made to satisfy such a demand, and provides a video signal unit l1 device that allows even subject information already taken on negative film to be easily viewed on a television receiver, etc., as necessary. It is something to do.

Embodiments of the present invention will be described in detail below with reference to FIGS. 2 to 7.

FIG. 2 shows the configuration of a first embodiment of the present invention. In FIG. 2, parts corresponding to those in FIG. 1 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In this embodiment, a signal #l & ringer 4 including means for inverting negative information to positive information as described later is provided inside the signal processor a used in FIG. A negative/positive reversing switch 01 for switching and controlling the reversing means is arranged at a predetermined part of the camera housing (1) at 5 so that it can be operated from outside the housing.

Well, a projection device (2) is provided. This projection device (2) is equipped with a lamp Q4 and a projecting plate (2) on which a negative film (3) is placed near the center of the housing (3).

A through hole (2) of a size sufficient to correspond to the portion of the negative film (c) containing substantially the subject information is bored in the center of the projecting plate (c). The veneer may be integrally formed with the housing, or may be specially attached.The projecting plate may be formed integrally with the casing, or may be specially attached. (to) is placed.

Therefore, the negative film (
When the negative film (c) is placed, the lamp (c)
It will be located on the optical axis that extends from (goods) to 2r@.

Furthermore, in order to condense the reflected light (2), a lens (2) is attached to a predetermined part of the housing (2) by penetrating the side wall.

The mounting position of the second lens is determined so that the transmitted light is efficiently transmitted to the lens system (2) on the camera side. aυ is a base on which the camera body and the projection device are placed.

Next, the operation of this embodiment will be explained. Now, negative film (
When it is desired to record the subject information in 2) on the magnetic disk αυ, the negative/positive inversion switch c11) is pressed to activate the means for inverting negative information into positive information in the signal processor (to). Then, the negative film (c) is placed on the projecting plate (2) of the projection device (2) so as to be aligned with the through hole (■), and the negative film (c) is passed through the filter (to) through the rung (2). irradiate. Then, the subject information from the negative film (2) is supplied to the photodetector (9)K as an optical image via the Z-ray (2), the lens (to), the lens system (2) on the camera side, and the like.

The photodetector 19) converts the input optical image into an electrical signal and supplies the signal detector cIIJK. The signal processor (to) generates a negative luminance signal and two color difference signals from the input signal, and after inverting these signals to a positive state, they are sent to the magnetic disk 01) for every K1 track via the head 02. The images are concentric circles.

FIG. 3 shows an example of a specific circuit configuration of the signal processor (2) used in FIG. 2. Same l1Ik: put, -
is the input terminal connected to the output side of the photodetector (9), (to) is the amplifier, - is the sampling and hold circuit for the red (R) signal, and the connection is the sampling and hold circuit for the blue (G) No. 41 signal. (To) is a sampling and holding circuit for the edge (G) signal, (To) is a luminance signal Y and two color difference signals R-Y,
Matrix circuit for obtaining B-Y (to).

(to) and ■ are throat rotation circuits for inverting negative information to positive information, which are especially used in this invention, -υ, target and -, respectively.
J is an inverting circuit 011. (to) and (4G) are level adjusters arranged on the output side, and these level adjusters -υ, function, and line can be deleted as necessary.

n, (4s and the ring are switch circuits for switching between photographing a normal live subject and photographing subject information on negative film, and in the former case, both switch to one contact, When the I/C contact bllK is switched, it becomes the signal section layer in the latter case.These switch circuits -2- and - may be switched mechanically by the reversing switch 69 (Fig. 2) K, or they can be switched electrically. Q may be an encoder, 4 is an FMgg device, and a decoy is an amplifier.

In such a configuration, the switch circuits -1- and - are connected to contacts a
Ill? When the IC is switched, the signal processing state becomes normal when photographing a live subject, and therefore only the circuit system corresponding to this state 11 has the flaw number IJ & science number 1 in the diagram g1.

Now, while photographing a normal live subject, the &1 input terminal (3 is supplied with a positive video signal from the photodetector (9), and from this signal the sampling and holding circuit 11CW, (up to ) and (to), respectively, a red light,
A green signal B and a green signal q are taken out. Each of these color signals is supplied to a matrix circuit 07)k, where they are converted into two color difference signals R-Y and B-Y as line sequential signals and a luminance signal Y, respectively, and then to switch circuits -, (4!), respectively. The signal is supplied to the encoder auxiliary through the contact a side of 9 and -, and after being processed there, it is further modulated by KFM modulator C8 and sent to the magnetic disk ( 1m) K is supplied to one circular track k, e.g., a luminance signal Y and two color difference signals R-Y, B for an l-field period.
-Y line-sequential signal and -bz frequency division are used to ml. On the other hand, the negative film (c) (Figure 2) K has already been taken and switch circuit -9 (c) and the ring are contacts by operating switch cla. b@, and a negative video signal is supplied to the input terminal (13) from the photodetector (9).

[This video signal is sampled and held by the circuit 041]
, (to) and (to) k are supplied, and the negative state red signal W11 signal B' and green signal q are respectively taken out on the output side, and these signals are further ! Two color difference signals (R-Y)' in negative state are supplied to the trix circuit (If)k.

(B-Y)' and the luminance signal Y'.

These signals are supplied to inverting circuits (to), gIa and -, respectively, where they are inverted from negative to positive signals, so that the output side thereof receives color difference signals R-Y in positive state, respectively.
, B-Y and the luminance signal Y are taken out. In other words, the signal state is the same as when a normal live subject is photographed with ζζ. These signals are supplied to the encoder 17 through the level adjuster (43) and the switch circuit (44, - and - contacts), respectively, and are connected to the magnetic disk AL as described above. ) K me will be improved.

In this way, in this embodiment, a negative film has already been applied.

Information on the subject photographed during the shooting process can be stored on a recording medium such as a rotating magnetic disk in the same manner as when photographing a live subject.

4 to 7 show a second embodiment of the present invention, and whereas the first embodiment described above performs reversal processing from a negative state to a positive state in the arrangement, this embodiment In this case, similar inversion processing is performed on the playback side.

FIG. 4 shows the arrangement of this embodiment. In this embodiment, the subject information from the negative film (c) is transferred directly to the magnetic disk □ am as a negative signal.
) K me (II), so instead of the signal processor (7) used in FIG. 2, a signal processing state that does not have means for inverting negative information to positive information is used, and an inversion switch a!
9 is unnecessary. The other configurations are the same as the 21st,
(Detailed explanation thereof will be omitted.

In this example, a negative film wheel (negative film@
) is photographed using an electronic still camera as described above, and the subject information is recorded in negative form on a rotating magnetic disk.

And the jacket stored in this magnetic disk -
Take it out and load it into the regenerator @, and the regenerator (to) k
After operating the built-in negative/positive reversal switch and activating the means for reversing negative information to positive information built into the player, the signal reproduced from the magnetic disk is converted into an NTaC color converter. 5 to supply the video signal to the television receiver 6η.

Note that the operation of the means for reversing negative information to positive information in the playback device may be changed manually by operating the reversing switch;
A positive reversal claw (5451) is provided, and when taking a negative film, &IC is set to this claw (54a) as 1t negative,
When the jacket is loaded, it may be inspected in the regenerator and switched from the positive state to the negative state by the operation of the above-mentioned reversing means.

71st! ! 11 shows an example of a different circuit configuration of the reproducing machine. 11ksP, 61 is a rotating magnetic disk stored in the jacket, the mallet is the motor for rotating this disk, ■ is the playback head, fil) is the playback amplifier, 0 is the FM generator 1 sister. is a decoder that obtains two color difference signals R-Y, B-Y and a luminance signal Y from the demodulated signal, -9@ and - are respectively % in this invention.
An inverting circuit for inverting negative information to positive information used in the above, and a switch circuit that can be switched depending on whether the reproduction signal from the magnetic disk group is positive information or negative information. If both contacts a@1/c are switched, the signal processing will be in the former case, and if both contacts are switched to contact b@, the signal processing will be in the latter case. switch circuit IT)
, 14 and - are as described above.

ffl is N for obtaining a color video signal of the NTaC system.
The T8C encoder σD is an RFgRil1 port that modulates the output signal of the encoder σ so that the color video signal from the encoder σ0 can be received on a specific channel of the television receiver 67).

Now, considering the normal case where the magnetic disk (to) K object information is recorded as a positive state signal, the signal reproduced via the reproduction head is again sent to the decoder 63.
and two color difference signals R-Y, B- are supplied to its output side.
Y and a luminance signal Y.

These signals are then supplied to the NTSC encoder σIk through the switch circuit I7), as and contact 1 side, where they are combined into an NTaC color video signal, and then a synchronization signal is mixed to create a composite color video signal. After the signal is converted into a signal, it is modulated by the RF modulator συ and sent to the television receiver 6? ) K is supplied, and the subject information recorded on the magnetic disk 611 is reproduced and displayed from the television receiver 671. This is a normal reproduction operation when a so-called positive state signal is recorded on the magnetic disk 61.

On the other hand, if the subject information is recorded as a negative signal on the magnetic disk @, by operating the reversing switch as described above, or by moving the jacket to the reversing claw (as shown in Figure 6).
541), since this is detected, the switch circuits -, 14 and - are switched between the contacts bin. Then, as described above, the signal of the negative portion reproduced via the reproduction head is amplified by the reproduction amplifier 6υ, demodulated by the FM demodulator II-, and supplied to the decoder 631, which outputs two negative signals. 0 color difference signal (RY)', (
B, Y)' and a luminance signal Y'.

These signals are respectively inverting circuits -1l! 9 and Iie< are supplied, and the negative state signal is inverted to a positive state signal, so that the output 1Ilk is the color difference signal R of the husband's positive state signal.
-Y, B-Y and the luminance signal Y are taken out.The signal state is now the same as the normal positive state. These signals are supplied to the NT8C encoder σGk through the contact sides of the switch circuits @n, I8 and -, respectively.
Here, it is combined with a color video signal of the NTaC system, and then mixed with a synchronization signal and extracted as a composite color video signal. This signal is modulated by the next-stage RFII device συ and supplied to the television receiver 67), so that the subject information recorded as a negative signal on the magnetic disk 61 is transmitted from the television receiver 6η. , is reproduced and displayed in the same way as the positive state.

In this way, in this embodiment, the subject information of the negative film is stored in the recording medium in the negative state as it is, and it is reversed to the positive state 11 on the playback machine side and taken out.
Subject information already captured on negative film can be easily reproduced and viewed on a conventional television receiver or the like.

As mentioned above, according to this release, a means for reversing negative information and positive information is provided on the electronic still camera or playback device, so that it is possible to take a picture of what is already a negative film with the electronic still camera and record it as a recording medium. It can be collected as an electrical signal, and if necessary, it can be easily reproduced and viewed as a normal image on a television receiver or the like.

In the above-mentioned embodiments, the case where a means for reversing negative information to positive information is built into an electronic still camera or a playback machine has been explained, but this reversing means is of an adapter type that can be attached and detached from the outside, and the negative film can be Only when taking pictures, this adapter type reversing means can be attached to an electronic still camera or playback device.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an example of an electronic still camera, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is a circuit diagram showing an example of the signal processor (e) in Fig. 2. Fig. 4 is a block diagram showing another embodiment of the present invention, Fig. 5 is a line diagram for explaining Fig. 4, and Fig. 6 is a diagram showing the structure of Fig. 5.
A perspective view showing an example of 4, and Fig. 7 is the reproduction machine (toward) of Fig. 6.
FIG. 2 is a circuit configuration diagram showing an example of the above. ao, 68 is a rotating magnetic disk, a ring, (1) is a signal processor, (2) is a projection device, (c), 63 is a negative film,
This is an electronic still camera, and it is a playback device. Figure 1

Claims (1)

[Claims] A video signal processing device that captures subject information on a negative film with a camera, records it on a recording medium as a video signal, and reproduces the recorded video signal with a playback device when desired, the video signal processing device including the camera or playback device. A video signal processing device characterized in that a means for inverting negative information to positive information is provided therein.