JPS62176390A - Electronic still camera device - Google Patents

Abstract

PURPOSE:To improve the picture quality by outputting a signal voltage of two adjacent picture element lines in parallel every horizontal scanning period from an integrated solid-state image pickup element and synthesizing recording color difference signals (R-Y) (B-Y) of the two adjacent lines. CONSTITUTION:Signal charges of the two adjacent picture element lines of plural picture element columns 1a of a single plate color solid-state image pickup element 1 are vertically transferred to horizontal CCDs 3a-3d during a horizontal flyback period, horizontally transferred by 4 horizontal CCD and the respective color picture element signals (a), (b), (c), (d) of the two adjacent picture element lines are inputted to a signal processing circuit 4 for synthesizing scanning line signals of the two lines. An outputted luminance signal Y1 of the first field and the color difference signal C'a are inputted to a magnetic head 6a through a modulation recording circuit 5a and a luminance signal Y2 of the second field and a color difference signal C'b are inputted to a mag netic head 6b through a modulation recording circuit 5b. The C'a, the C'b are respectively constituted of the first color difference signal (R-Y) and the second color difference signal (B-Y) alternately every 1 horizontal scanning period.

Description

[Detailed description of the invention] Technical field The present invention relates to improvements in electronic still camera devices.

BACKGROUND ART An electronic still camera incorporating a solid-state image sensor and a recording means for recording a video signal output from the solid-state image sensor is well known. According to the combined signal recording/reproducing format, the I'I'V field image signal is recorded on one magnetic track of the magnetic disk device.

And when recording the ITV frame image signal,
The above I'I''V frame signal is divided into two field signals, and each field signal is recorded on two magnetic tracks.In this way, both a field image recording type still camera and a frame image recording type still camera can be used. Compatibility can be maintained.The field image signal recorded on each magnetic track includes a plurality of scanning line signals composed of color difference signals of class 18 and luminance class 13.

The two types of color difference signals CI=RY and C2=BY are alternately recorded every horizontal scanning period.

- It is well known that a single-chip color solid-state image sensor or a multi-chip color solid-state image sensor is used in the above electronic still camera device.

DISCLOSURE OF THE INVENTION The electronic still camera device described above competes with conventional optical still cameras and is compatible with VTR integrated 'I'
Competes with V camera. When compared with optical still cameras, electronic still cameras are superior in immediacy, running costs, and have the advantage of being able to display 'IV', but are inferior in weight and print quality. Electronic still cameras have an advantage in image quality and miik compared to v'r n integrated '1' cameras, but the movie shooting function is It is necessary to improve the print image quality and 'rv display image quality as much as possible, and to improve the cost performance.Therefore,
The basic objective of the present invention is to improve the image quality of electronic camera devices. In order to achieve the above object, the present invention discloses three independent inventions. Each independent invention has a common purpose and produces a synergistic effect when implemented together.

Margin below The basic features of each independent invention are described below.

(1) Built-in single-chip or multi-chip color solid-state image sensor,
In an electronic still camera device that outputs horizontal scanning line signals constituting at least a l i'V frame image, the above-mentioned single-chip or multi-chip color solid-state image sensor outputs signal voltages of two adjacent pixel rows in parallel in each horizontal scanning period. The first color difference signal C11t-Y is synthesized using the output signal voltages of the two adjacent pixel rows, and the first color difference signal C11t-Y is synthesized using the output signal voltages of the two adjacent pixel rows. 2 color difference signal C
2=13-Y, and output the above adjacent 2
A first field luminance signal Y1 whose main component is the signal voltage of the first pixel row among the signal voltages of the pixel rows is synthesized, and the second pixel of the signal voltages of the two adjacent pixel rows is outputted. The second field luminance signal Y2 whose main component is the signal voltage of the row is synthesized, and the first field luminance signal Y1 and the first color difference signal C are combined during the odd (even) scanning period.
I is modulated and then mixed to synthesize the first scanning line signal Sl, and in the above odd (even) horizontal scanning period, the second field luminance signal of "U" and the above second color difference signal C2 are respectively modulated. After modulating and mixing, the second field scanning line signal S2 was synthesized, and the first field luminance signal Yl and the second color difference signal C2 were modulated during even (odd) horizontal scanning Fl1, respectively. After mixing and synthesizing the first field scanning line signal St, and modulating the second field luminance signal Y2 and the first color difference signal C1 during the even-(odd) horizontal scanning period, respectively. Mix and 2nd
Combine the field scan line signal S2, and
An electronic still camera device characterized by II for recording a first field scanning line signal Sl and a second field scanning line signal S2 outputted every i126 periods in parallel on different tracks.

(2) The odd (even) pixel rows of the above-mentioned single-chip color solid-state image sensor alternately include the first color pixels and the second color pixels, and the even (odd) pixel rows are the third color pixels. 2. The electronic still camera device according to claim 1, wherein color pixels and fourth color pixels are alternately provided, and the low frequency component of the signal voltage of each pixel row is approximately a luminance signal.

(3) The electronic still camera according to item 2, wherein the color pixels in the second pixel row are arranged horizontally displaced by one pixel pitch with respect to the color pixels in the +22nd pixel row. Device.

(4) Built-in single-chip or multi-chip color solid-state image sensor,
In an electronic still camera device that outputs at least a scanning line signal constituting an ITV frame signal, the single-chip or multi-chip color solid-state image sensor described below converts the signal voltages of two adjacent pixel rows in parallel in each horizontal scanning period. The luminance signal and the i-th color difference signal CI-rt-Y are synthesized from the signal voltage of the odd (even) pixel rows, and the luminance signal and the i-th color difference signal from the (3rd voltage) of the even (odd) pixel rows are combined. Two color difference signal C2=H-Y
The luminance signal and color difference signal synthesized from the signal voltages of the same pixel rows are recorded on the same magnetic track during odd (even) horizontal scanning periods, and the same pixel rows are recorded during even (odd) horizontal scanning periods. An electronic still camera device that records luminance signals and color difference signals synthesized from signal voltages on separate magnetic tracks.

(-), an electronic still camera device incorporating a solid-state image pickup device, which includes at least one shutter means and an optical film system; An electronic still camera device that is characterized by capturing images.

The detailed features and effects of the six inventions are explained below.

German q invention 1. Clay 2.1 As explained above, an electronic still camera can be
In order to
It is necessary to reduce lT m and price as much as possible. However, as explained in the prior art section, electronic still cameras have a color-difference signal sequential recording format, and their linear resolution is of course not as good as that of optical still cameras.
It is also not sufficient for integrated 'I' V cameras. The color difference signal recording and reproducing characteristics of a frame recording non-ITSC type electronic still camera which provides higher image quality will be discussed below with reference to the drawings. However, in this specification, the scanning line signal is composed of a luminance signal for one horizontal scanning period and one type of color difference signal for one horizontal scanning period.

FIG. 1 is a scanning line signal diagram representing an 1-frame image signal reproduced from two magnetic tracks of an electronic still camera. 1st
From the magnetic track, select an odd (even) number of rows (for example, N rows, N
A first field scan line signal consisting of scan line signals of rows (+2 rows, rows N+4) is reproduced, and from the second magnetic track, even (odd) rows (for example, rows N+1, rows N+3, rows N+5) are reproduced. A second field scanning line signal, which is also composed of scanning line signals, is reproduced. Field recording that records only one field image signal on one magnetic track/'+T
In order to maintain compatibility with the f-raw system, two adjacent scanning line signals of each field scanning line signal must have different color difference signals. That is, the first field scanning line signal S
1 has a first field luminance signal Yl, and a second field scanning line signal S2 has a second field luminance signal Y2. Then, the scanning line signals of the N, N+ I, N+ 4, and N+ 5 rows have the first color difference signal CI = RY, and the N+
2. N+3. N+6. The scanning line signal of the N+7 row has a second color difference signal C2=BY. 2. Commonly used threshold - Therefore, the color difference signals C1 and 02 each have a resolution (vertical resolution) of 1/4 of the luminance signal in the vertical direction. In an NTSg still camera, there are 525 scanning line signals, and the luminance signal constituting the 1-frame image signal can resolve signal light in a band of approximately 6 MHz input in the vertical direction.

In other words, the luminance signal of the 1-frame image signal is approximately 6M in the vertical direction.
It has a bandwidth of ITZ (480 TV lines). In reality, the vertical resolution of the luminance signal above is approximately 4,4 by multiplying by the Kel coefficient.
M) Iz (350 TV books). Therefore, each color difference signal C
I and C2 are each 1°5MH7 (120
It has a band of about 1.1 MHz (88 lines) when multiplied by the Kel coefficient. In other words, the vertical band of the color difference signal of a field/frame recording electronic still camera is very small, and when signal light with high frequencies is input in the vertical direction, color moire occurs, and the horizontal band is very small. Generates a large false color signal at the contour. The above-mentioned drawback becomes greatest when the 4° luminance signal and one type of color difference signal that constitute each scanning line signal are synthesized using signal voltages for one pixel row, respectively. This is because the sampling frequency in the vertical direction becomes high and the sensitivity becomes high for signal light having a high frequency in the vertical direction. By combining the color difference signal of one row from the signal voltages of adjacent multiple pixel rows, the color difference signal of one row becomes less sensitive to signal light having a high frequency in the vertical direction due to an aperture effect.

The vertical sampling frequency/l of each color difference signal (since it is essentially small (approximately 3 ML z), the signal light having a vertical band of 1° 5 ML z or more) On the other hand, moiré occurs.

FIG. 3 is a scanning line signal diagram showing signal voltages of six pixel rows.

In FIG. 2, one row of luminance signals is combined with signal voltages of I j and ri rows to ensure vertical luminance resolution,
Then, each color difference signal C1 or C2 of one row is
It is synthesized from the signal voltages of pixel rows. In the solid-state imaging device described above, the signal voltages of two adjacent pixel rows are output to 5 columns, and the signal voltage of one pixel row among the output signal voltages of two adjacent pixel rows is delayed by 111 times. In this way, one type of color difference signal included in one row of scanning line signals is combined with the signal voltages of two adjacent pixel rows.
1. The above-mentioned moire is slightly reduced by the effect. However, the disadvantage still remains that the vertical sampling frequency of the color difference signal is essentially low, and the color moiré and false contour color signals are large. FIG. 3 shows M pixel rows to M pixel rows of the solid-state image sensor used to generate the seven rows of scanning line signals shown in FIG.
It is a 6-line signal diagram showing the signal voltage of +7 pixel rows. Figure 2
Similarly, the luminance signal of one row is combined with the signal voltage of one pixel row. The color difference signal CI or C2 of one row is synthesized from the signal voltages of three adjacent pixel rows, respectively. Naturally, in order to reduce false signals due to the vertical phase difference between the luminance signal and the color difference signal, the center pixel row of the three adjacent pixel rows in L is a pixel row that generates the luminance signal of the same row. For example, the first field luminance signal Yl of one row is generated from the signal voltage of the M+4th pixel row, and the second color difference signal C2 is recorded on the same magnetic track as the first field luminance signal Y1 of the first row of the two legs. is M
+3. It is synthesized from M+4 and M+5 pixel signal voltages. In this way, with 4 degrees, color moire and false contour color signals are reduced due to the aperture expansion effect, but moire and false contour color signals are still tolerated due to the low sampling frequency of the vertical color difference signal. It's tough.

Furthermore, the embodiment of FIG. 3 requires a large-scale delay circuit, and its installation causes problems such as cost and deterioration of the S/N ratio.

In order to address the above-mentioned problems of electronic still cameras, the present invention generates a first color difference signal C1 and a second color difference signal C2 from the signal voltages of two adjacent pixel rows output from a solid-state image sensor in one horizontal scanning period. Two types of color difference signals CI and C2 are synthesized and output for each horizontal scanning period! It is characterized in that it is alternately distributed into a first field scanning line signal and a second field scanning line signal every horizontal scanning period. By doing this, when displaying the frame image signal, the first! The color difference signal C1 and the second color difference signal C2 can each have half the resolution of the luminance signal in the vertical direction. That is, the color difference signal C
The vertical bands of I and C2 are each about 3 MHz
Even when multiplied by the Kel coefficient, it becomes approximately 2°2 M II z. Furthermore, the first and second tracks reproduced from the two magnetic tracks are
Since the color difference signals are synthesized from the same two adjacent pixel rows,
False color difference signal Cl which is the vertical phase difference between the above two color difference signals
-02 is O.

The vertical resolution improvement effect of the two color difference signals described above is produced by arranging the vertical pitches of the color difference signals in each row to be separated by exactly two pixel pitches.

Also, 1 field image! When recording on a magnetic track, the first . Second color difference signal! Recording/reproduction can be performed for each horizontal scanning period.

Further, since the luminance signal of one row and the color difference signal recorded together with it are only displaced by 0.5 pixel pitch in the vertical direction, false signals due to the vertical phase difference between the two can be ignored. Furthermore, according to the present invention, two color difference signals are synthesized from the signal voltages of two adjacent pixel rows, so each color difference signal has a higher SN ratio than the embodiment in which one type of color difference signal is synthesized from the signal voltages of one pixel row. Moiré and false contour color signals generated by signal light having a high frequency in the vertical direction are reduced by expanding the equivalent aperture ratio (aperture effect).

Another advantage of the present invention is that the color difference signals C1 and C2 can be synthesized from the signal voltages of two adjacent pixel rows that are output in parallel from the solid-state image sensor, eliminating the need for delay circuits and reducing circuit costs, power consumption, and S/N. Dependent invention by changing the ratio! , clay z, 2 Independent light 'IIJI + In one embodiment of (Claim I), a single-plate color solid-state image sensor is used. As a result, the cost and volume of the electronic still camera can be reduced. The odd pixel rows alternately include first color pixels a and second color pixels S, and the even pixel rows alternately include third color pixels C and fourth color pixels d. .

And a+b-c+d=Y. If you do this,
The low frequency component of each pixel row can be used as the luminance signal Y. Then, the color difference signal CI from the two four-color pixels a, b, c, and d
=I't-Y and color difference signal C2=B-Y can be synthesized.

In a preferred embodiment, a - c = d - b = K
1(It-Y)=K I XCI, and a-d=c-
b=to 2(I3-Y)=to 2XC2. However, K
l, 2 is a coefficient. In this way, the adjacent 2
Since the first color difference signal C1 and the second color difference signal C2 can be directly separated from the signal difference between two color pixels adjacent in the vertical or diagonal direction of the pixel row, the color difference signal synthesis circuit becomes very simple.
Dependent invention 2. Claim 3 In the preferred embodiment of claim 2, the Kiri-th row having the same color pixel is +2
They are arranged horizontally displaced by one color pixel pitch with respect to the pixel row. In theory, it is 0 or any positive integer.

In this way, the following effects can be obtained.

The first effect is the color difference signal modulation component a-b or c-d mixed into the high-frequency component of the luminance signal created from the signal voltage of the pixel row, and the luminance signal created from the signal voltage of the +2 pixel row. The color difference signal modulation components b-a or d'-C mixed into the high-frequency components have opposite phases and are visually integrated and significantly reduced.

This effect is the same when recording a field image signal on one magnetic track. That is, the color difference signal modulation components a-b-1-c-d mixed into the luminance signal of the (K) first row, which is the signal voltage sum of the +1 pixel row in K, and the color difference signal modulation components a-b-1-c-d mixed in the luminance signal of the +3 pixel row in K12, The color difference signal modulation components b−a+d−C mixed into the luminance signal of the (K+1)th row, which is the sum of signal voltages, have opposite phases and are visually integrated to become very small. In addition, when the above-mentioned frame luminance signal and field luminance signal are used in a TV receiver equipped with a Y/C separation comb filter,
It generates false color difference signals, but are Y and C independent of the above TV receiver? , 1. If you use i-terminals or independent terminals for R, G, and R, the two-legged problem will not occur. Another advantage of this embodiment is that color pixels a and c are adjacent in the vertical direction, color pixels S and d are adjacent, and a-c-d-b=K I (II-Y)=K
In the embodiment of I C, one color difference signal component is substantially small 2×C2, and each pixel column frj has C
This occurs because I is obtained. The above effects will be explained in detail by Examples.

Independent invention 2. Claim 4 Independent Invention 1 (According to claim 1, the vertical color difference signal resolution of a frame recording trace electronic still camera is greatly improved. From the signal voltage of the 11th pixel row), the first color difference signal CI (or C2) of the M row,
Since the second color difference signal C2 (or CI) of M+1 rows is combined, the luminance signal and the color difference signal essentially have a vertical phase difference of I/2 pixel pitch. That is, when the color difference spectrum of the signal light changes in the vertical direction, a false color difference signal is generated. Although the false color difference signal in 1U is not large, it is preferable that it be as small as possible. By using optical fiber, PF...
compresses the vertical frequency of the signal light to approximately 5 MHz or less.
.

Filter 1f is also possible, but it does not have a great effect. In particular, g during this period is 3rC at the contour part in the horizontal force direction.The present invention modifies the problem in section E of the electronic still camera. outputs signal voltages in parallel, and synthesizes odd field scanning line signals consisting of a luminance signal and a first (second) color difference signal using the signal voltage of one pixel lost at t1, and then outputs a signal of an even numbered pixel row. Depending on the voltage, the luminance signal and the second (first
) A second field scanning line signal composed of color difference signals is synthesized, and a luminance signal and a color difference signal composed of signal voltages of the same pixel row are combined in the same magnetic field during an even horizontal period. Record the luminance No. 13 and color difference signals synthesized from the signal voltages of the pixel rows on different magnetic tracks.
It is characterized by 4゛rujl. Eyes? Running I
The luminance signal and one type of color difference signal that constitute the 4i line signal have no vertical phase difference. Of course, it? At the time of generation, the brightness signal of the running blue line signal of the above one line and the other! The type of color difference signal is 1
It has a vertical phase difference of pixel pitch. However, this vertical phase difference is determined by comparing the low-frequency components of the luminance signals of three adjacent pixel rows centering on the luminance signal marked 1-, and then selectively selecting the color difference signal (other color difference signals) with a larger vertical correlation. By using it, it is almost eliminated.

In the present invention, the I tl delay circuit is not required;
Ru independent invention 3. Claim 3 The first claim set forth above. By the second independent invention, the adjacent two
Pixel row! The color difference signal vertical resolution of the 1μ column output frame 11 recording electronic still camera has been improved, allowing the design of electronic still cameras with higher image quality. ! .

However, the image quality of competing optical still cameras is extremely high, and we are at a disadvantage when it comes to competing with them in terms of print image quality. Furthermore, V'l''R/integrated'!゛V camera?
The advantage of immediacy cannot be monopolized. In particular, a VTR-integrated 1'V camera has the advantage of long shooting time and the ability to shoot moving images. Therefore, in order for electronic still cameras to survive, v'rit integrated '! There is a need to achieve image quality that is not possible with V-cameras, so the object of the present invention is to improve the image quality of electronic still cameras.

A second object of the present invention is to improve the cost/performance of a still camera device (4 = 1).In order to achieve the above object, the present invention provides at least It features a built-in optical film system that uses the same lens optical system and one shack means. Recording 12. Recording can be done on the magnetic disk of an electronic still camera when you want to obtain normal print quality, or when you want to change the 1' V display or when immediacy is required. In the still camera device of the present invention, a lens system (for example, a zoom lens) that is expensive, heavy, and large in volume can be shared, so the price and volume do not increase.

Nyak et al. can be shared in some cases. In addition, it can be used for most of the automatic aperture control system, automatic focus control system, shutter drive control system, shutter system, battery system, circuit system, etc. required for still camera equipment. Volume does not increase. After all, by adding an optical film to a conventional electronic still camera device, a dual electronic/optical still camera device can be designed, with little increase in cost and Rjet, just a larger film loading volume; It just becomes. And you can make electricity. - In general use, high print quality is not always required, and there are many cases where an electronic printed board that is recorded on magnetic tracks and is half the service size of a conventional optical printed board is sufficient. In addition, there are cases where only the rV display is sufficient. According to the invention,
It can be easily switched depending on the purpose. Simultaneous shooting with LaLaron optical filter 11 and solid-state image sensor ゛4゜゜゜I
G et H1 ability. Further, in the present invention, film cost and film 2° development cost can be saved by the following switching. Another advantage of the present invention is that the solid-state image sensor can be used as a light sensor for exposure control of the fill 14 system or for autofocusing of the fill 11 system. For optical film systems, in order to improve image quality, it is preferable to use lft, which has the highest possible aperture control/focus control functions.1. However, since solid-state image sensors have a high light detection function, they can satisfy the requirements of the "U." .

Other features and advantages of the invention are illustrated by the following examples.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 4 is a signal diagram of a solid-state image sensor of an electronic still camera using the independent invention 1 (claim 1). In FIG. 4, from the M-th element to the M-th element of the solid-state image sensor
÷7 pixel rows are displayed. Each pixel row of m new pixel rows has a plurality of color pixels of the same type, and each pixel row of even numbered pixel rows has a plurality of r! ! ,+ili
J: have. Of course, when using a multi-plate color solid-state imaging device, one pixel row is composed of one pixel row for each of the plurality of solid-state imaging devices. Then, the signal voltages of two adjacent pixel rows (M and M+I, M+2 and M↑3.M+/I and M4.5°M6 and M+7) are output in parallel from this solid-state image sensor during one horizontal scanning period.

Then, from the signal voltages of two adjacent pixel rows output to the 1f2 column, the first color difference signal CI −= It −Y and 02 ==
r, (-Y are synthesized. Generally, the three primary color signals IZ, G, [4 are synthesized by adding and subtracting each color pixel signal voltage of two adjacent pixel rows that are output in parallel, or it is directly output as It-Y.
, B -Y are synthesized. ---Generally, the above R, G, r(
The signal or It-Y, r3-Y signal is band-limited and then gamma-converted, and then the first color difference signal CI
, and is converted into a second color difference signal C2 and recorded. Therefore,
The first color difference signal CI and the second color difference signal C2 described in the claims are color difference signals input to the modulation circuit of the recording apparatus, and are generally subjected to gamma conversion. In the embodiment of FIG. 4, two adjacent pixel area components are output in parallel. And in this case, the above! The row luminance signal is gamma-polarized and then recorded.

Therefore, the luminance signal of one row described in the claim is a luminance signal input to the modulation circuit of the recording device, and therefore, the luminance signal of one row that has been gamma-converted directly is the signal voltage of one pixel row. It is roughly the same as the luminance signal created by conversion. Many gamma conversion methods can be used to combine the gamma-converted luminance signal and color difference signal, and their explanation will be omitted here.

As a result of the above signal processing, in the X-th horizontal scanning period, the first field luminance signal Yi whose main component is the signal voltage of the M pixel row
(gamma converted) and the first color difference signal CI (gamma converted) separated from the M and M+I pixel rows constitute the first field scanning line signal S'1 and are recorded on the first magnetic track. Similarly, the second field luminance signal Y2 whose main component is the M+I pixel signal voltage, and the M, M+1
The second color difference signal c2 synthesized from the pixel rows constitutes the second field scanning line signal S2 and is recorded on the second magnetic track. In the next X+1 horizontal scanning period, Yl whose main component is the signal voltage of M+2 pixel row and M+2°M-1-3
c2 synthesized from the signal voltages of the pixel rows is 81 and the first
recorded on magnetic tracks. Similarly, a luminance signal Y2 whose main component is the signal voltage of M+3 pixel rows, and M+2.
C I //4 synthesized from the signal voltages of M+3 pixel rows
82 and recorded on the second magnetic track. As a result, as can be seen from Fig. 4, the vertical resolution of the color difference signals CI and C2 is half that of the luminance signal, and there is no vertical phase difference between the two color difference signals, and the vertical resolution of the color difference signals CI and C2 is half that of the luminance signal. The vertical phase difference is 1/2 pixel pitch.

FIG. 5 is a signal line diagram (pixel row diagram) of a solid-state image pickup device of an electronic still camera using the patent invention 2 (claim 4).

FIG. 5 is basically the same as FIG. 4. That is, in FIG. 5, the MilT+ith pixel row to the M+7th pixel row of the solid-state image sensor are displayed. In the present invention, the first field luminance signal Yl (preferably gamma-converted) and the first color difference signal CI (preferably gamma-converted) are synthesized from the signal voltages of odd (even) circular element rows. Similarly, even (odd) rlt
A second field luminance signal Y2 (preferably gamma conversion 46) and a second color difference signal C are obtained from the signal voltage of the ilTIi element.
2 (preferably gamma-converted) are synthesized. Then, during odd (even) horizontal scanning periods, the luminance signal and color difference signal combined with the signal voltage of the same pixel row are recorded on the same magnetic track, and during the even (odd) horizontal scanning period, the signal voltage of the same pixel row is recorded on the same magnetic track. The luminance signal and color difference signal synthesized from the two are recorded on redundant magnetic tracks. Of course, the solid-state image sensing device of the present invention outputs signal voltages of two adjacent pixel rows in parallel during one horizontal scanning period, and 2.
The row δ luminance signals Y l and Y 2, the first color difference signal CI, and the second color difference signal c2 are combined. For example, during the x7th instep scanning period, the first field scanning line signals S and I are the luminance signal Y1 synthesized from the signal voltage of M pixel rows and the color difference signal CI synthesized from the signal voltage of M pixel rows. The second field scanning line signal S2 is a luminance signal Y2 synthesized from the M+I pixel signal voltage and a color difference signal c2 synthesized from the signal voltage of the M-)1 pixel row.

In the next X+1 horizontal scanning period, the first field scanning line signal Sl is a luminance signal Yl synthesized from the signal voltages of M+2 pixel rows and a color difference signal c2 synthesized from the signal voltages of M+3 pixel rows. and second field scanning line signal s2
is the luminance signal Y2 synthesized from the signal voltages of M+3 pixel rows
and a color difference signal c1 synthesized from the signal voltages of M+2 pixel rows.

The first field scanning line signal Sl and the second field scanning line signal s2 are recorded on different magnetic tracks.

FIG. 6 shows a recording circuit of an embodiment of an electronic still camera according to the present invention having the pixel row arrangement and signal processing method shown in FIGS. 31 and 4. signal type 6;
It is vertically transferred to 3b, 3c, and 3d. 2 is a transfer electrode. Horizontal CCD 3 a horizontally transfers signal charges of odd (even) pixel columns of odd (even) circular pixel rows, and
b horizontally transfers the signal charge of an even number pixel column of an odd number of rows (horizontal CCI); 3 C transfers the signal charge of an odd pixel column of an even number of rows Horizontal transfer, horizontal CC
D3d transfers signal charges of even (odd) pixel columns of even (odd) circular pixel rows. Regarding the above-mentioned solid-state image sensor that horizontally transfers the signal type 6:i of two adjacent pixel rows by four horizontal CODs, please refer to Japanese Patent Application No. 59-184328 filed by the present applicant.

Generally, in a single-chip color CD solid-state imaging device that outputs signal charges of two adjacent pixel rows in parallel, each pixel row is often +11 alternately provided with color pixels having two different spectral spectra. Therefore, each signal voltage output from the above 4 horizontal CCI) structure is automatically changed to each color pixel signal a.
, b, c, and d. Each color pixel signal a, b, c, d of two adjacent pixel rows output from each horizontal COD is 2
The signal is input to a signal processing circuit 4 that synthesizes scanning line signals of the rows. The first field luminance signal Yl and the first field color difference signal Ca output from the signal processing circuit 4 are different! 1.
! +The signal is input to the magnetic head 6a via the recording circuit 5a. 2nd field luminance signal Y2 outputted from 4
and the second field color difference signal cb is strange, a,! It is manually applied to the magnetic head 6b via the I recording circuit 5b. Ca written in
.

cb is the first color difference signal C1 for each horizontal scanning period.
and the second color difference signal C2. Generally, Ca and cb output during the same horizontal scanning period are different color difference signals, but if Y2 and cb are delayed by I + (period), -Ca and Cb can be the same color difference signal during the same horizontal scanning period. The advantage of this embodiment is that the color difference signals of the two magnetic heads recorded at the same time are close to each other (the same type of color difference signals of the pixel rows), so that the crosstalk between the color difference signals of the two magnetic heads is equivalently reduced. In this embodiment, it is possible to install the magnetic head 6b at the magnetic track position 11!2 delayed by I horizontal scanning period, and the readout scanning line signal of the magnetic head 6a can be reduced. It is also possible to delay the scanning line signal reproduced from 6b by 111 periods.The signal processing circuit 4 generally firstly
The three primary color signals of two lines are combined or published, and each of the three primary color signals rt1. R2, Gl.

G 2 , +3'l, and U 2 are each subjected to gamma conversion, and two lines of luminance signals and two types of color difference signals are synthesized from the gamma-converted three primary color signals. In another embodiment, two rows of luminance signals and two types of color difference signals are first combined without performing gamma conversion, and then the two rows of luminance signals and two types of color difference signals are subjected to gamma conversion. and records via 5a and 5b. In this embodiment, a high quality color video signal can be reproduced from the luminance signal and two types of color difference signals reproduced from the magnetic head. Furthermore, gamma conversion circuits used in conventional TV systems have the disadvantage that high frequency primary color signals are attenuated. This drawback is eliminated in this embodiment.

However, in the case of 'rV reproduction, color reproducibility deteriorates.

This problem is caused by inverse gamma conversion of the reproduced luminance signal and two color difference signals, respectively, and the Y signal that is not gamma converted.

All you need to do is reproduce CI and C2, synthesize the three primary colors fa from them, and then gamma-convert the three primary color signals again to synthesize a predetermined TV color signal.Two types of color difference from two adjacent pixel rows Many methods for synthesizing signals have been proposed, and there are various methods such as color pixel arrangement methods and gamma processing methods, but detailed explanations thereof will be omitted. FIG. 7 is a color pixel arrangement diagram of a solid-state image sensor in which each pixel row has two types of color pixels alternately. Odd pixel rows alternately include color pixels a and b, and even pixel rows alternately include color pixels c and d. Pixel rows and +2 pixel rows having the same color pixels are arranged horizontally displaced by one pixel pitch. In an electronic still camera with this color pixel arrangement, the luminance signal synthesized from the signal voltages of K pixel rows is a color difference signal modulation component a whose phase is 1801 different from the luminance signal synthesized from the signal voltages of +2 pixel rows.
-b or C- (has 1. As a result, the false color difference signal (1: color difference signal modulation component) mixed in the high frequency range of the luminance signal is visually significantly reduced. In FIG. 7, a- 1-b
It is preferable that = c−L d=Y. As a result, the above-mentioned false color difference signals are reduced. In one embodiment of FIG. 7, KIXCI (or C2)=a−d=c−b;
Preferably, K2XC2 (or CI) = a-c = d-b. If it is done like this, the color difference signal CI = rZ
-Y and C2=B-Y can be easily separated, and the false color difference signal mixed into the high range of the luminance signal for achromatic light can be reduced to zero. 2 is a coefficient in Kl. 8 and 9 are other embodiments of FIG. 7. - A single-chip color solid-state image sensor having the color pixel arrangement shown in FIGS. 7, 8, and 9 is suitable for the present invention.

FIG. 10 is a partial plan view of an electronic still camera illustrating independent invention 3 (claim 5). Main lens! 1 optical axis 10
The movable solid-state image sensor 12 and the optical film 15 are installed at right angles to the . +4 is transparent glass;
2 is the shack. FIG. 10 shows the case of photographing with a solid-state image sensor. When photographing on the film 15, the movable solid-state image sensor 12 is moved and the lens system is focused on the film surface. The shutter 12 can be used for both solid-state imaging devices and film, but if the solid-state imaging device does not require a shutter, the shutter should be opened when the solid-state imaging device takes a picture. In FIG. 11, the signal light is connected to the solid-state image sensor I3 and the film by the optical splitter 16 installed on the optical axis. 11 is a modified embodiment of FIG. 10 in which signal light is distributed to five channels. Although the shutter I2 is installed only for the film 15, it can of course also be installed for the solid-state image sensor 13. In one embodiment, the optical splitter 16 is a prism or a half mirror.

In this case, the solid-state image sensor and film have the advantage of being able to simultaneously take pictures. In another embodiment, the optical splitter 16 is a rotating shutter having a transparent part that transmits the signal light and a mirror part that reflects the signal light. The shutter I2 is preferably opened when the signal light passes through the transparent portion of the rotary shutter. Naturally, the element 16 can operate as a shutter for the solid-state image sensor. In this embodiment, the solid-state image sensor and the film can be photographed almost simultaneously. Note that in FIG. 10, the movable solid-state image sensor can also partially rotate about the rotation axis instead of moving in parallel.

In the embodiment shown in FIG. 11, if the focal lengths of the solid-state image sensor and the film are matched, there is no need to change the focal length of the lens each time the photographing mode is changed, and the operation becomes simpler. Note that if the above-mentioned optical film is in the form of a disk film, the increase in volume can be minimized and the drive of the film disk becomes simple.

A detailed description of each independent invention is provided below.

Independent invention! and Independent Invention 2 (the common feature is that the first field scanning line signal and the second field scanning line signal constituting one frame image signal
511 field scanning line signals! to a magnetic track
1. In an electronic still camera that records in lf4 rows. The first field scanning line signal S1 has color difference signals CIX=OL-Y) and C2x=CB-Y) alternately every horizontal scanning period, and the second field scanning line signal S2 has color difference signals CIX=OL-Y) and C2x=CB-Y) alternately.
has color difference signals CIy=(It-Y) and C2y=(13-Y) alternately every horizontal scanning period, and the vertical center of gravity of the pixel rows constituting the above color difference signal C1x is C1y.
The vertical center of gravity of the pixel rows constituting the color difference signal C2x is displaced by two pixel row pitches in the vertical direction with respect to the vertical center of gravity of the pixel rows constituting the color difference signal C2x. This is a pitch displacement of two pixel rows in the direction perpendicular to the center of gravity of the direction. However, when a color difference signal is synthesized from the signal voltage of one pixel row, the above vertical center of gravity is the center position of that pixel row, and when the above color difference signal is synthesized from the signal voltage of two adjacent pixel rows, the above vertical center of gravity is the center position of that pixel row. The vertical center of gravity is naturally the boundary between the two adjacent pixel rows. Naturally, if the above conditions are maintained, the color difference signal can be composed of signal voltages of three or more adjacent pixel rows, but the circuit becomes complicated and there is no great advantage.

In order to ensure the vertical resolution of the luminance signal, it is preferable to combine the first field luminance signal and the second field luminance signal with the signal voltage of one pixel row, but in an embodiment using a primary color filter, the horizontal In order to improve the resolution, the signal voltages of two adjacent pixel rows may be combined. The luminance signal and the color difference signal CI or C recorded in J(
2 is preferably configured with signal voltages of the same pixel row or adjacent pixel rows as much as possible in order to remove extraneous bones.

In the embodiment of FIG. 4, the luminance signal of one row and the color difference signals CI, C2 used therewith are displaced by only 0.5 pixel row pitch in the vertical direction. In the embodiment of FIG.
The row luminance signal and the color difference signal CI (C
2) is made from the same pixel row, and the color difference signal c2 (CI) used therewith is vertically displaced by one pixel row bit.

- From the fact described in Fig. 40, the embodiment of Fig. 5 has a small vertical false signal. In the embodiment shown in FIG. 41 and FIG. 5, the running d-line signals S I and S 2 of two adjacent rows can be synthesized from the signal voltages of two adjacent pixel rows that are output in parallel, so the delay circuit can be omitted. 49 In FIG. 5, the above-mentioned two adjacent rows of scanning line signals S1. S2 is simultaneously recorded on two magnetic tracks and played back. Then, the scanning line signals S1. of two adjacent rows are simultaneously reproduced. From S2, one row of necessary luminance signals and color difference signals CI and C2 are separated. Therefore, this regeneration circuit too! ■No delay circuit required. FIG. 4 In the electronic still camera of the embodiment shown in FIG. 5, when recording a field image signal, it is only necessary to cut off the input to one of the magnetic drags.

In Independent Invention 3, in an embodiment using a disk-shaped optical film (abbreviated as an optical disk), -
Forming the optical disk and the magnetic disk described in item 1-1 on the front and back sides of one disk, or housing both in the same cartridge, contributes to downsizing of the electronic still camera. It is also useful for downsizing the electronic still camera to appropriately fit either the above magnetic disk or optical disk into the same disk cartridge storage space of the electronic still camera.

[Brief explanation of drawings]

FIG. 1 is an α-ray signal diagram of an electronic still camera using the frame recording mode standard. 2 and 3 are pixel row arrangement diagrams of a solid-state image sensor that generates a scanning line signal of the frame recording type electronic still camera shown in FIG. 1, respectively. FIG. 4 is a pixel row arrangement diagram of an embodiment of a solid-state image sensor of an electronic still camera according to Independent Invention 1. FIG. 5 is a pixel row arrangement diagram of an embodiment of a solid-state image sensor of an electronic still camera representing Independent Invention 2. FIG. 6 is a block diagram showing a partial signal processing circuit of an electronic still camera having the pixel row arrangement of FIGS. 4 and 5. In FIG. FIG. 7 is a color pixel arrangement diagram of one embodiment of a solid-state image sensor used in the electronic still camera of the present invention. 8 and 9 show an example of the color pixel arrangement of FIG. 7. Figure 10 shows the electronic still camera of Independent Invention 3! FIG. 2 is a plan view of an embodiment. FIG. 11 shows the variation of the electronic still camera shown in FIG. 10. c/=, 5”2 Y1YCε-5/-A/Shiki□ -N-F3□γQfCe=Sg rl+C(=Sl-1+'f--N+,i-Yc'+(:/=Se 1 'tt ce-stg-A/+6' -Yl, please 1□
M □ -rl -Yl', Ce Yl, CI-M+ □ -M+-ta □Ye? , Kotohisa 17 Heley H c d c d -Ht/
䔔GoodF'A b q -Htε Y d Od (, -H-F, 3 do(shido(b=door 4 cm jiot Ye (-Y YcCr /'7(17-t&
(1-W-Mya/13F?, Cj-斥♀ N 5 (Tf'e, q-1ha 4ft Written amendment to the procedure (self-motivated) November 5, 1985 To the Commissioner of the Japan Patent Office Showa fn 1961 n Submitted on August 8!, Indication of the case 1986 Patent Application No. 18968 2, Title of the invention Electronic still camera device 3, Person making the amendment Relationship to the case Patent applicant address (residence) Meito-ku, Nagoya City, Aichi Prefecture 465 Kamisha 2-3
7 CI Hongo 305 Full text of Shoji Tanaka's specification All drawings 5, Statement of contents of amendment 1, Title of the invention/Electronic still camera device 2, Claims (including a single-plate or multi-plate color solid-state image sensor) The signal voltage of each pixel row of the above-mentioned solid-state image sensor is shifted to synthesize the recording color difference signal C(n+1)=B−Y=Cb of the N+1 row,
Then, using the signal voltages of at least M+3 pixel rows, N
+2 rows of recording color difference signal C(n+2)=B-Y=Cb
, then displace by a small elementary pitch, and similarly N+
1. N+2. An electronic still camera device with N+ characteristics. (2), recording color difference signals C(n), C(n
+1) are the signal voltages C of the two adjacent pixel rows M and M+1, respectively.
(n+2) and C(n+3) are each synthesized from the signal voltages of two adjacent pixel rows M+21M+3 (3), and the recording color difference signal C(n) is synthesized from the signal voltages of the pixel row M, The recording color difference signal C(n+1) is the pixel row M.
In the electronic still camera device described in item 10, the recording color difference signal C(n+ 3 ) is synthesized from the signal voltage of +1 and is composed of the recording color difference signal C(n+ 3 ). The electronic still camera according to item 2, characterized in that two types of recording color difference signals synthesized from the pressure are used as two types of color difference signals of one line of output (or display) color video signal. Playback device ξ. (5) The built-in solid-state image sensor outputs the signal voltages of two adjacent pixel rows in parallel every horizontal scanning period, and the signal voltages of the two adjacent two pixel rows are then The electronic still camera device according to item 1, item 2, or item 3, characterized in that the recording color difference signals Cr and Cb are synthesized. (6) An electronic still camera device ξ having a built-in solid-state image sensor, which is characterized by having at least one optical shutter means and an optical film mechanism built-in, and capable of photographing with the above-mentioned solid-state image sensor at the time of sale. Still camera equipment. 3. Detailed Description of the Invention Technical Field The present invention relates to improvements in electronic still camera devices. BACKGROUND ART Electronic still cameras incorporating a solid-state image sensor and a recording means for recording video signals output from the solid-state image sensor are well known. According to the combined signal recording/reproducing method, one TV field image signal is recorded on one magnetic track of the magnetic disk device. When recording one TV frame image signal, the one TV frame signal is divided into two field signals, and each field signal is recorded on a different magnetic track. In this way, compatibility between the field image recording type electronic still camera and the frame image recording type electronic still camera can be maintained. The field image signal recorded on each magnetic track should include a plurality of scanning line signals composed of one type of color difference signal and a luminance signal. And two types of color difference signals C? 2RY and Cb=+(-Y
are recorded alternately every horizontal scanning period. In the electronic still camera device described above, it is well known that an n-chip color solid-state image pickup device or a multi-chip color solid-state image pickup device is used. It competes with still cameras, and also with integrated 'I' V cameras.Compared with optical still cameras, electronic still cameras have superior instantaneous performance and running costs. 'It has the advantage of being able to display V-), but 1
Poor in rt fat and print quality. ,V'I
``+?Compared to an integrated '1' V camera, electronic still cameras have advantages in image quality and weight, and do they have advantages in terms of image quality and image quality? It is necessary to improve the print quality and J'V display quality of still cameras as much as possible, and to reduce the cost burden by 4 months. Therefore, the basic objective of the present invention is to improve the image quality of the still camera device. Achieved 171 targets in L Book 4
In order to achieve this, the present invention discloses X independent inventions 4'. The basic features of each invention are described below in the margins. (1) An electronic still camera device incorporating a single-chip or multi-chip color solid-state image sensor and processing still image signals in frame recording mode. , the signal voltages of each pixel row of the two solid-state image sensors are output independently, and the signal voltages of at least M (M is an integer) pixel rows are used to record N (N is an integer) rows. Color difference signal C(n)-RY=
Cr is synthesized, and the signal voltage of at least M+1 pixel rows is used to generate a color difference signal for recording of N+1 rows C(n+1)=
By combining B−Y=Cb, and using the signal voltage of at least M+3 pixel rows, the recording color difference signal C(n
+2)=13-Y=Cb and at least M
The recording color difference signal C(n+3)-RY=Cr of the N+3 row is synthesized using the signal voltage of the +2 pixel row, and the synthesized N, N+3. The centers of gravity of the recording color difference signals Cr in the N+4 rows are vertically displaced from each other by approximately two pixel pitches, and similarly, the centers of gravity of the recording color difference signals Cr in the N+1. An electronic still camera device characterized in that the centers of gravity of the recording color difference signals Cb of N+2°N+5 rows are set to be vertically displaced from each other by approximately two pixel pitches. (2), recording color difference signals C(n), C(n+
1) is synthesized from the signal voltages of two adjacent pixel rows M and M+1, respectively, and the recording color difference signal C(n+2
), C(n+3) are two adjacent pixel rows M+2
．． The first signal is synthesized from M+3 signal voltages.
The electronic still camera device described in Section 1. (3) The recording color difference signal C(n) is synthesized from the signal voltage of the pixel row M, and the recording color difference signal C(n+1) is synthesized from the signal voltage of the pixel row M.
+1 signal voltage and is synthesized from the recording color difference signal C(n+
2) is synthesized from the signal voltage of pixel row M+3, and the recording color difference signal C(n+3) is synthesized from the signal voltage of pixel row M+2. (4) During the playback period, two types of recording color difference signals synthesized from the signal voltages of the same two adjacent pixel rows are used as two types of color difference signals for the output (or display) color video signal of one row. 3. The electronic still camera playback device according to claim 2, characterized in that: (5), every horizontal scanning period f from the built-in solid-state image sensor
The first method is characterized in that the signal voltages of two adjacent pixel rows are output in parallel to i, and the recording color difference signals Cr and Cb of the two adjacent rows are synthesized from the output signal voltages of the two adjacent pixel rows. The electronic still camera device according to item 1 or 2 or 3. (6) An electronic still camera device incorporating a solid-state image sensor, which includes at least one optical shutter means and an optical film mechanism, and is capable of switching between the solid-state image sensor and the optical film, or both. An electronic still camera device that is characterized by simultaneous shooting. The detailed features and effects of each invention are explained below. Independent invention 1. Claim 1 As explained above, in order to popularize electronic still cameras, it is necessary to improve the TV display image quality and print image quality, that is, the image quality of l-frame images, and to reduce the weight and price as much as possible. be. However, as explained in the prior art section, electronic still cameras have a color difference signal sequential recording format, and their vertical color resolution is sufficient not only for optical still cameras but also for VTR-integrated TV cameras. isn't it. The color difference signal recording and reproducing characteristics of a frame recording type NTSC electronic still camera with higher image quality will be discussed below with reference to the drawings. However, in this specification, one row of scanning line signals is composed of one row of luminance signals and one row of one type of color difference signal. FIG. 1 is a scanning line signal diagram representing an 1-frame image signal reproduced from two magnetic tracks of an electronic still camera. 1st
From the magnetic track, select an odd (even) number of rows (for example, N rows, N
A first field signal S1 consisting of scanning line signals of +2 lines, N+4 lines, N+6 lines, where N is an integer is reproduced, and from its second magnetic track an even (odd) number of lines (e.g.
N+1 row, N+3 row. A second field scanning line signal S2 composed of scanning line signals of (N+5 rows) is reproduced. In order to maintain compatibility with the field recording/reproducing method in which only one field image signal is recorded on one magnetic track, two adjacent scanning line signals of each field scanning line signal must have 5 types of color difference signals. There is. That is, the first field scanning line signal S
l has a first field luminance signal Y1, and a second field scan line signal S2 has a second field luminance signal Y2. The scanning line signals of the N, N-1-1, N+4, and N+ 5 rows have the first color difference signal Cr=R-Y, and the N+2. N
+3°N+6. The scanning line signal of row N+7 is the second color difference signal c
Have b-B-Y. Generally, the color difference signal of one row and the luminance signal of the same row are synthesized from signal voltages of the same pixel row as much as possible in order to avoid false signals. Therefore, the color difference signals Cr and cb each have a 6-dimensional resolution that is 1/4 of the luminance signal. In an NTSC still camera, the scanning line signal is 52
If the luminance signals constituting the 1-frame image signal are input in the vertical direction, signal light in a band of about 6 MHz can be resolved. That is, the luminance signal of the 1-frame image signal is approximately 6M in the vertical direction.
It has a band of Hz (480 TV lines). In reality, the vertical resolution of the above luminance signal is approximately 4,4 M multiplied by the Kel coefficient.
It will be llz (350 TV books). The color difference signals CI and C2 are respectively 1.・5M)
It has a band of Iz (12 OTV lines), and when multiplied by the Kel coefficient, it essentially has a band of about 1.1 MHz (88 lines). In other words, the vertical band of the color difference signal of a field/frame recording electronic still camera is very small, and when a signal light with a high frequency is applied in the vertical direction, color moire occurs, and the water NV is unidirectional. Does a large false color signal occur at the contour of the image? l-ro. Configure each scanning line signal ゛4
When a luminance signal and one type of color difference signal are synthesized using signal voltages for one pixel row, the disadvantage described in item 6 becomes most noticeable. This is because the sampling frequency in the vertical direction becomes high and the sensitivity to signal light having a high frequency in the vertical direction becomes high. By combining the color difference signal of one row from the signal voltages of a plurality of adjacent pixel rows filtered by 4°, the color difference signal of one row becomes less sensitive to signal light having a high frequency in the vertical direction due to the aperture effect. However, because the vertical sampling frequency of each color difference signal is woodenly small (
Vertical color moiré occurs for signal light having a band of 1°5 MIIz or more in the vertical direction. FIG. 2 is a scanning line signal diagram showing a color difference signal synthesis method of a frame recording electronic still camera using two adjacent pixel row parallel output type solid-state imaging devices disclosed in Japanese Patent Laid-Open No. 60-180285. In FIG. 2, color difference signal C(n+1)=R−Y of N+1 row
is synthesized from the signal voltages of M and M+1 pixel rows, and the color difference signal C(N+2)=B−Y of N+2 rows is synthesized from the signal voltages of N+1°M+2 pixel rows, and the color difference signal C(N
+3)=I3-Y is N+2. Synthesized from signal voltages of M+3 pixel rows, color difference signal of N+4 rows C(N+4)=RY
is N+3. It is synthesized from the signal voltages of M+4 pixel rows. That is, in an electronic still camera with parallel recording of two adjacent rows, the color difference signal of each row is synthesized from the signal voltages of different pairs of two adjacent pixel rows. Therefore, the above-mentioned moiré is slightly reduced due to the aperture effect. However, the disadvantage still remains that the vertical sampling frequency of the color difference signal is essentially low, and the color moiré and false contour color signals are large. FIG. 3 is a scanning line signal diagram of another embodiment showing signal voltages from M pixel rows to M+7 pixel rows of the solid-state image sensor used to generate the seven rows of scanning line signals shown in FIG. The luminance signal of one row is combined with the signal voltage of one pixel row. Each row of color difference signals Cr or cb is synthesized from the signal voltages of three adjacent pixel rows. For example, from the signal voltage of the M+4th pixel row to the luminance signal Y of the N+4th row (n+4)
are synthesized, and the above luminance signal Y(n4-4) and
The color difference signal C(n
+4) = Cb is the adjacent three pixel rows M+3, M+4, M+
It is synthesized from 5 signal voltages. By shifting in this manner, color moiré and false contour signals are reduced due to the aperture effect. However, since the vertical color difference signal sampling frequency is low, moiré and false contour signals are noticeable. In order to improve the above-mentioned problems of electronic still cameras, the present invention provides adjacent four pixel rows M output from a solid-state image sensor,
The signal voltages of M+I, M+2, and M+3 are output independently, and the color difference signal C(n)=Cr of the N rows is synthesized using at least the signal voltage of the pixel row M, and then the color difference signal of the N+1 row The color difference signal C(n-41)=cb is synthesized using at least the signal voltage of pixel row M+1, and
The color difference signal C(n+2)=Cb of the +2 row is synthesized using at least the signal voltage of the pixel row M+3, and the color difference signal C(n→-3)=Cr of the N+3 row is synthesized using at least the signal voltage of the pixel row M+3.
It is characterized by combining using a +2 signal voltage. In this way, when displaying one frame image signal,
The vertical resolution of the first color difference signal Or and the second color difference signal cb is significantly improved. For example, the color difference signals Cr and cb can each have half the resolution of the luminance signal in the vertical direction. That is, the vertical bands of the color difference signals Cr and Cb are each about 3 MH2, and even when multiplied by the Kel coefficient, it is about 2.2 MH2.
Becomes z. Furthermore, since the eleventh and second color difference signals reproduced from the two magnetic tracks are synthesized from the same two adjacent pixel rows, the vertical false color difference signal component, which is the vertical phase difference component between the two color difference signals, is 0. become. The effect of improving the vertical resolution of the above two types of color difference signals is produced by sampling each pixel bit. Furthermore, in an embodiment in which the color difference signal Cr or cb of one row is synthesized from the signal voltages of two adjacent pixel rows,! Field images! When recording on a magnetic track, it becomes possible to record color difference signals Cr and cb with half the vertical resolution every horizontal scanning period. Furthermore, in one embodiment of the frame recording type electronic still camera of the present invention which synthesizes color difference signals from the signal voltages of two adjacent pixel rows, two types of color difference signals are synthesized from the signal voltages of two adjacent pixel rows, so each color difference signal is synthesized from the signal voltages of two adjacent pixel rows. The signal is from the signal voltage of one pixel row! Higher SN compared to the embodiment that synthesizes different types of color difference signals
Moiré and false contour signals generated by signal light having a high frequency in the overlapping direction are reduced by improving the equivalent aperture ratio (aperture effect). Note that during the playback period of the electronic still camera of the present invention, the color difference signals Cr and cb synthesized from the same two adjacent pixel rows, and one of the two types of color difference signals Cr and Cb are simultaneously recorded. From the brightness signal Y of one row, 1
Color scanning line signals for row output (Y, RY, r(-
Y) is played. In this way, the vertical color resolution is most improved. Therefore, the basic purpose of Independent Invention 1 is to improve the vertical color resolution of a frame recording type electronic still camera, and its basic characteristics are color difference signals C'r=n-Y1, M+3 .
It is to synthesize from M+5. In this way, the vertical color resolution is improved because the spatial sampling frequency of the vertical color difference signal is increased compared to the conventional color difference sequential frame recording format. Of course, in the present invention, the color difference signal Cr or cb of one row is synthesized using not only the signal voltage of one pixel row specified above but also the signal voltage of other pixel rows (for example, the signal voltage of an adjacent pixel row). I can do that. However, the important point in the present invention is that the color difference signal Cr (or Cb
) is vertically displaced by two pixel row pitches with respect to the center of gravity of one row of adjacent color difference signals Cr (or Cb) of the same type. Other features and advantages of the invention are explained in the following dependent inventions. Dependent invention 1. Claim 2 In a preferred embodiment of independent invention 1, color difference signals Cr and cb of two adjacent images are combined. That is, two adjacent pixel rows M,
The color difference signal C(n)-C' and the color difference signal C(n+1)=Cb are synthesized from the signal voltage of M+1, and the color difference signal C(n+2)-Cb and the color difference signal C are synthesized from the next two adjacent pixel rows M+2 and M+3. (n+3)=Cr is synthesized. In this way, the vertical color difference signal sampling condition of Independent Invention I can be very easily satisfied. For example, the signal voltage of the above two adjacent pixel rows is It can be easily output from a pixel row parallel output type solid-state image sensor.In addition, each color difference signal is separated (combined) from two adjacent pixel rows, improving the S/N ratio and eliminating vertical color moire due to the aperture effect. Dependent invention 2. Claim 3 In the preferred embodiment of independent invention 1, the signal voltages of each pixel row of the solid-state image sensor are outputted independently, and the color difference signals of each row are each specified in independent invention 1. It is synthesized from the signal voltage of one pixel row.In this way, the color difference signal synthesis condition of Independent Invention 1 can be easily satisfied.For example, in Embodiment 1, the odd (
The even (odd) device rows have color pixels a and color pixels A alternately installed in the horizontal direction, and the even (odd) device rows have color pixels C and color pixels d alternately installed in the horizontal direction. Then, the color filter is designed so that the signal difference between color pixel a and color pixel S becomes Cr (or Cb), and the signal difference between color pixel C and color pixel d becomes color difference signal Cb (or Or). Just design it. Dependent invention 3. Claim 4 In the preferred playback device for the frame-recording electronic still camera of claim 1.2.3, 1 output during the playback period.
The color video signal of the row is 2T4. It is composed of color difference signals Cr and cb of the same type, and a luminance signal of one row containing at least one of the signal voltages of the two adjacent pixel rows. In this way, the vertical phase difference between the two types of color difference signals becomes zero. The signal voltages of two adjacent pixel rows are output in parallel from the two-pixel row parallel output type solid-state image sensor every horizontal scanning period, and the color difference signal Cr of the adjacent two rows is calculated from the output signal voltage of the two adjacent pixel rows. n −Y and Cb=B−Y are synthesized. In this way, as explained earlier, the color difference signal C' of the two adjacent rows can be processed without delaying the signal voltage of the solid-state image sensor.
and cb can be synthesized, the circuit becomes simple, and there is no deterioration of the S/N ratio or increase in power consumption. That is, two types of color difference signals Cr and cb synthesized from the signal voltages of two adjacent pixel rows may be distributed to predetermined rows for each horizontal scanning period. For example, the first
Cr is distributed to N rows and cb is distributed to N+1 rows during one horizontal scanning period. Then, in the next H+1 horizontal stationary period, Cb is N+2
Cr is distributed into N+3 rows. Then, during the next H+2 horizontal scanning period, Cr is distributed to N+4 rows and Cb is distributed to N+5 rows. Then, in the next H+3 horizontal scanning period, cb is distributed to N+6 rows and Cr is distributed to N+7 rows. Thereafter, the color difference signals Cr and Cb are distributed in the above order. Another advantage of the dependent invention is the parallel output type (21
-IR) type solid-state image sensor is used, so in field recording mode, the luminance signal and color difference signal that constitute one row of scanning line signals can be synthesized from the signal voltages of two adjacent pixel rows. Independent invention 2. Claim 6 By virtue of the above-described independent invention 1, the color difference signals of a frame recording mode electronic still camera can have high vertical resolution and its image quality is improved. However, the image quality of competing optical still cameras is extremely high. Therefore, they are at a disadvantage in competing with optical still cameras in terms of print image quality. Furthermore, with the widespread use of VTR-integrated cameras, the advantage of immediacy cannot be monopolized. In particular, V.T.
The R-integrated TV camera has a long shooting time and is capable of shooting video. Therefore, in order for electronic still cameras to survive, it is necessary to achieve image quality that is not possible with VTR-integrated TV cameras. An object of the present invention is to enhance the image quality of electronic still cameras. The 20th object of the present invention is to improve the cost/performance of still camera equipment. In order to achieve the above-mentioned object, the present invention is characterized in that an electronic still camera is equipped with at least one shutter means and an optical film system using the same lens optical system. If you want to obtain clear print image quality (recorded on the above optical film,
Then, it is possible to record on the magnetic disk of an electronic still camera when normal print quality is desired, when the purpose is to display on TV, or when instantaneousness is required. In the still camera device of the present invention, the price is high and the 11r
Since the lens system and the lens system having a large volume (for example, a zoom lens) can be used in common, their price, Tj'r1, and volume do not increase. In some cases, gloss can also be used.In addition, the automatic aperture control system, automatic focus control system,
Most of the shutter drive control system, strike CL system, battery system, circuit system, etc. can be used for J1, and their 1dIi + 8, weight...
, the volume does not increase. In the end, adding an optical film to a conventional electronic still camera device: When designing a still camera device for electronic/optical devices, there is little increase in cost and IRT, and the film loading volume is increased by 11 people. It just makes the paper look thinner.And it is not necessary to use magnetic tape (for general use, the print quality is always high).
The service size of a conventional optical printed board is 1', and an electronic printed board can be recorded for 4 minutes in many cases. There are also cases where just the TV display is sufficient. According to the present invention, it is possible to easily switch depending on the purpose. ,t
J Lalon Optics: 11 L nJ capability that simultaneously takes pictures with a Neulumn and a solid-state image sensor. Further, in the present invention, 1
・You can save film cost and film development cost by switching the following. The other 111 points of the present invention are to use the solid-state image sensor for film-based exposure control or fill!・The angle is -11° which can be used as an optical sensor for automatic focusing of the system. It is preferable for an optical film system to have as high a function as possible for aperture control/focus control in order to improve image quality.
．． Yes, solid-state image sensors have high light detection capabilities! −
The above requirements can be met. . Other features and advantages of the invention are illustrated by the following examples. BEST MODE FOR CARRYING OUT THE INVENTION FIG. 4 is a reliability diagram of a solid-state image sensor of an electronic still camera according to the German-French invention 1 (claim 4). : The 7th pixel row from the row is displayed. Each pixel row has a plurality of color pixels of the same type, and each pixel row of even numbered pixel rows has a plurality of color pixels of the same type. (has color pixels)
. Of course, when using a multi-plate color solid-state image sensor,
One pixel row is composed of one pixel row each of a plurality of solid-state image sensors. Then, from this solid-state image sensor, two adjacent pixels if (M and M + I. M12 and M + 3.
The signal voltages M+4 and M+5゜M+G and M+7) should be output in parallel. Then, the first color Xf signal C): rt-Y and 0sa==B-Y are synthesized from the signal voltages of two adjacent pixel rows output to the 112th column. Generally, the three primary colors 1+r are added and subtracted from each color pixel signal voltage 11 of the adjacent two pixel rows to be output to the =lk column.
し j11, G,)
, synthesize B-Y. In general, the above 1e, G,
The H signal or the 11-Y, B-Y signal is band-limited, then gamma converted, and then converted into a color difference signal Cr and a color difference signal Cb, and then recorded. Therefore, the color difference signals Cr and cb described in the claims are color difference signals input to the modulation circuit of the recording apparatus, and are generally gamma-converted. In the embodiment of FIG. 4, two rows of luminance signals are synthesized from signal voltages of two adjacent pixel rows that are output in parallel. In one embodiment, the luminance signal for one row is a low frequency component of the signal voltage for one pixel row. Also in this case, the above-mentioned one row of luminance signals is gamma-converted and then recorded. Therefore, the luminance signal in one line described in the claims is a luminance signal that is manually input to the modulation circuit of the recording device, and is generally gamma-converted. However, the absolute value of the luminance signal is approximately 1
Since it is equal to the low frequency component of the signal voltage of the pixel row, the gamma-converted luminance signal of one row is approximately the same as the luminance signal created by directly gamma-converting the signal voltage of one pixel row. As a result of the above signal processing, in the X-th horizontal scanning period, the first field luminance signal Yl whose main component is the signal voltage of the M pixel row
(Gamma converted) and M, M-? The first color difference signal C)4 (gamma converted) separated from the I1 pixel constitutes the first field scanning line signal S1 and is recorded on the first magnetic track. Similarly, a second yield luminance signal Y2 whose main component is the signal voltage of M+1 pixel row, and M
, the second color difference signal Ct synthesized from M+1 pixel rows is the second
This constitutes a field scan line signal S2 and is recorded on the second magnetic track. In the next X-1-1 horizontal scanning period, M+
Yl whose main component is the signal voltage of 2 pixel rows, and M+2゜M
, ) A channel synthesized from the borrowed voltages of three pixel rows is recorded as 81 on the first magnetic track. And similarly M-
! A luminance signal Y2 whose main component is the signal voltage of 33 pixels,
M+2. C1- synthesized from the signal voltages of M+3 pixel rows
constitutes S2 and is recorded on the second magnetic track. As a result, as can be seen from FIG. 4, the vertical resolution of the color difference signals Ct and Cν is 1L, minutes of the vertical resolution of the luminance signal, and there is no 1cm quadrature phase difference between the two color difference signals, and the luminance signal and The vertical phase difference between the two color difference signals is 1/2 pixel pitch. FIG. 5 is a pixel row diagram of a solid-state image sensor built into an electronic still camera using the second dependent invention. FIG. 5 is basically the same as FIG. 4. That is, in FIG. 5, M pixel rows to M+7 pixel rows of the solid-state image sensor are displayed. In the present invention, the first field luminance signal Yl and the color difference signal Cr are synthesized from the signal voltages of odd (even) pixel rows. Similarly, the second field luminance signal Y2 and the color difference signal cb are synthesized from the signal voltages of even (odd) pixel rows. When recording the scanning line signals of two adjacent rows synthesized from the M and M+1 pixel rows, the luminance signal and color difference signal synthesized with the signal voltage of the same pixel row are recorded on the same magnetic track. M+2. When recording scanning line signals of two adjacent rows synthesized from M+3 pixel rows, the luminance signal and color difference signal synthesized from the signal voltages of the same pixel row are recorded on different magnetic tracks. Furthermore, the solid-state image sensor of this dependent invention is! It is preferable to output signal voltages of two adjacent pixel rows in parallel during the horizontal scanning period. Then, the luminance signals Yl and Y2 of the two rows and the color difference signals Cr and cb are synthesized from the output signal voltages of the two adjacent pixel rows. For example, during the X-th horizontal scanning period, the first field scanning line (No. 3 S1 is a luminance signal Yl synthesized from the signal voltage of M pixel rows and a color difference signal C? synthesized from the signal voltage of M pixel rows. , and the second field scanning line signal S2 is a luminance signal Y2 synthesized from the signal voltages of M11 pixel rows and a color difference signal Cb synthesized from the signal voltages of M1 pixel rows. During the scanning period, the first field scanning line signal S1 is a luminance signal Yl synthesized from the signal voltage of M+2 pixel rows and a color difference signal Cb synthesized from the signal voltage of M+3 pixel rows.Then, the second field scanning line signal S2
is signal 1 of M+3 pixel row; luminance signal Y synthesized from voltage
2 and the signal/voltage of M12 pixel rows. The first field scanning line signal Sl and the second field scanning line signal S2 are recorded on different magnetic tracks. Figure 6 has the pixel row arrangement and signal processing method of Figure 31 and Figure 4.
An embodiment of the recording circuit of the electronic still camera of the present invention is illustrated in FIG. 4.
Signal type 6 of the two adjacent pixel rows of the pixel column 1a of the recovery pixel column 1a of the single-capture color solid-state image sensor I: J is the horizontal CCD during the horizontal retrace period.
It is vertically transferred to 3a, 3b, 3c, and 3d. 2 is a transfer electrode. Horizontal CC1) 3a horizontally transfers the signal charges of odd (even) pixel columns in odd (even) pixel rows, and
3b horizontally transfers the signal pattern J of even (odd) pixel columns of odd (even) pixel rows, horizontal CC1) 3 C is the signal of odd (even) pixel columns of even (fractional) pixel rows 7riR is horizontally transferred, and the horizontal CCD 3d transfers the signal charges of even (odd) pixel rows and even (odd) pixel columns. Regarding the above-mentioned solid-state image sensor that horizontally transfers signal charges of two adjacent pixel rows using four horizontal CCDs, Japanese Patent Application No. 59-1843 filed by the present applicant
See 28. In general, in a single-chip color CD solid-state imaging device that outputs signal charges from two adjacent pixel rows in parallel, each pixel row often has two different color spectra and alternately includes color pixels. Therefore, each signal voltage output from the four horizontal COD structure in E is automatically changed to the old color pixel signals a, b.
, c, and d. The color pixel signals a, b, c, and d of two adjacent pixel rows outputted from each horizontal COD are input to a signal processing circuit 4 that synthesizes the scanning line signals of the two rows. The first field luminance signal Yl and the first field color difference signal C' output from the signal processing circuit 4 are input to the magnetic heald 6a via the modulation recording circuit 5a. and 4
The second field luminance signal Y2 and the second field color difference signal C'b outputted from C'a are input to the magnetic head 6b via the modulation recording circuit 5b. Each cb is,! The first color difference signal C and the second color difference signal C'b are alternately formed in each horizontal scanning period. Generally, C12 and C16 output during the same horizontal scanning period are different color difference signals, but Y2 and C16 are
By delaying by a period, C'a and C'b can be the same color difference signal in the same horizontal scanning period. The advantage of this embodiment is that the color difference signals of the two magnetic heads recorded at the same time are the same type of color difference signals of adjacent pixel rows, so it is possible to equivalently reduce crosstalk between the color difference signals of the two magnetic heads. be. In this embodiment, it is possible to install the magnetic head 6b4:I at a magnetic track position delayed by the horizontal scanning period, and to compare the reproduced scanning line signal of the magnetic hept 6a with the reproduced scanning line signal from 6b. It is also possible to extend the II+ period by 4 degrees. Generally, the signal processing circuit 4 first synthesizes or distributes two rows of three primary color signals, and then gamma-converts each of the three primary color signals r(I, R2, GI, G2.B] and I32, respectively). , Part 1.
2 lines of luminance signals and 2 lines of gamma-converted three primary color signals
Synthesize different color difference signals. In another embodiment, two rows of luminance signals and two types of chrominance signals are first combined without gamma conversion, and then the two rows of luminance signals and two types of chrominance signals are gamma-converted. and records via 5a and 5b. In this embodiment, a high quality color video signal can be reproduced from the luminance signal and two types of color difference signals reproduced from the magnetic head. That is, the gamma conversion circuit used in the conventional TV system has the drawback that high frequency primary color signals are attenuated. This drawback is eliminated in this embodiment. However, when playing back on TV, color reproducibility deteriorates. This problem is caused by inverse gamma conversion of the reproduced luminance signal and two color difference signals, respectively, and the Y signal that is not gamma converted. C)-, Cb, synthesize three primary color signals from them, and then gamma-convert the three primary color signals again to synthesize a predetermined TV color signal. Many methods have been proposed for synthesizing two types of color difference signals from two adjacent pixel rows, and there are various methods, including different color pixel arrangement methods and gamma processing methods, but a detailed explanation of these methods will be omitted. Ru. FIG. 7 is a color pixel arrangement diagram of a solid-state image sensor in which each pixel row has two types of color pixels alternately. Odd (even) pixel rows alternately include color pixels a and b, and even (odd) rII pixel rows alternately include color pixels c and d. The -JK and +2 pixel rows having the same color pixels are arranged horizontally displaced by one pixel pitch. In an electronic still camera with this color pixel arrangement, the luminance signal synthesized from the signal voltages of K pixel rows is divided by 22 color difference signal modulation components a whose phase is 180 degrees different from the luminance signals synthesized from the signal voltages of pixels. -b or Cd. As a result, the false color difference signal (J: color difference signal modulation component) mixed in the high frequency range of the luminance signal is visually significantly reduced. In FIG. 7, a+t
It is preferable that it is +-c dmY. The result 1.1-
The false color difference signal described above is reduced. In one embodiment of FIG. 7, KIXC (manoni is Cb) da-d=c-b, and K2×Ch (or c))=a-(<d-
b = 11 is preferred. In this way, the color difference signals Ct=RY and cb=-H-Y can be easily separated,
Since the achromatic light is mixed into the high range of the luminance signal, the color difference signal can be set to 0. K1. 2 is a coefficient. Figure 8
and FIG. 9 are other embodiments of FIG. 7. Figure 7゜Figure 81 above
FIG. 10 is a partial plan view of a single-plate color solid-state still camera showing the color pixel arrangement of FIG. 9; The movable solid-state image sensor 12 and the optical film 1 intersect at right angles to the optical axis 10 of the main lens II.
5 is installed, 14 is transparent glass, and 12 is a shutter. FIG. 10 shows the case of photographing with a solid-state image sensor. When photographing on the film 15, the movable solid-state image sensor I2 is moved and the lens system is focused on the film 12 surface. The shutter 12 can be used for both solid-state imaging devices and film, but if the solid-state imaging device does not require a shutter, the shutter is opened when the solid-state imaging device takes a picture. FIG. 11 shows a modified embodiment of FIG. 10 in which the signal light is distributed to the solid-state image sensor 13 and the film 15 by an optical splitter 16 installed on the optical axis. Tsuyatsuta 1
2 is installed only for the filter 15, but of course it can also be installed for the solid-state image sensor 13. Optical splitter 16 is a prism or a half mirror in one embodiment. In this case, the solid-state image sensor and film have the advantage of being able to simultaneously take pictures. In another embodiment, the optical branch 2:) 16 is a rotating shutter having a transparent part that transmits the signal light and a mirror part that reflects the signal light. It is preferable that the gloss 12 be opened when the signal light passes through the transparent portion of the rotary shutter. Naturally, the element 16 can operate as a shutter for the solid-state image sensor. In this embodiment, the solid-state image sensor and the film can be photographed almost simultaneously. Note that in FIG. 10, the movable solid-state image sensor can also partially rotate about the rotation axis instead of moving in parallel. In the embodiment shown in FIG. 11, if the focal lengths of the solid-state image sensor and the film are matched, there is no need to change the focal length of the lens every time the photographing mode is changed by 4 degrees, and the operation becomes simpler. Note that if the above-mentioned optical film is formed into a disk film format, the increase in volume can be minimized and the film disk can be driven inside the cylinder. Additional explanations of Independent Inventions 1 and 2 are provided below. The basic feature of the invention is that one frame image signal consists of a first field scanning line signal Sl - a first field luminance signal Y1, a first field color difference signal '-upper C'a, and a second field Signal S2-second field luminance signal Y2+second
The field color difference signal C'b is composed of the first field scanning line signal Sl, and the first field scanning line signal Sl of L is composed of the color difference signal Cr for each line.
=RY and the color difference signal Cb=B-Y alternately, and - the above second field scanning line signal S2 has the color difference signal Cr and the color difference signal cb alternately for each line, and the above first field The center of gravity of the pixel rows constituting the color difference signal C' is set to be displaced by two pixel row pitches in the vertical direction with respect to the center of gravity of the pixel rows constituting the color difference signal Cr of the second field.However, When one row of color difference signals is synthesized from the signal voltages of one pixel row, the above centroid is the center of that pixel row, and when one row of color difference signals is synthesized from the signal voltages of two adjacent pixel rows, -the above Naturally, the center of gravity is the boundary between the two adjacent pixel rows mentioned above.Similarly, the color difference signal Cb of the first field is set to be displaced by two pixel row pitches in the vertical direction with respect to the color difference signal cb of the second field. 4 has the advantage that the center of gravity of one row of luminance signals is displaced by only 0.5 pixel row pitch in the vertical direction with respect to the center of gravity of one row of color difference signals Cr and Cb used therewith. In one embodiment of Independent Invention 2, it is possible to store an optical disk film in the magnetic disk storage section of an electronic still camera.In this way, it is possible to downsize the camera. , the first output from the signal processing circuit
Field scan line signal S I =Y 1 , C'a or second field scan line signal 52 = Y2 . Preferably, either C'b is recorded after being delayed by a period of 0.51r. In addition, when reproducing a frame image from two magnetic tracks recorded by the above recording circuit, the phase difference between the two magnetic tracks (the phase difference of 0 and 51-1 between the two reproduced field signals) is compensated. There is a need to. FIG. 12 is a block circuit diagram representing the above-described modified embodiment of FIG. The second field luminance signal Y2 and the second field color difference signal c'b output from the signal processing circuit are sent to the modulation recording circuit 5 via 0.5tl delay circuits 20 and 21, respectively.
b. FIG. 13 is a block circuit diagram showing a circuit for reproducing a color image signal from a two-field signal reproduced from a magnetic disk recorded by the recording circuit of FIG. 12. Its structure is explained below. The first field luminance signal Yl reproduced from the first magnetic track and the second field luminance signal Y2 reproduced from the second magnetic track are transferred to the field changeover switch 2.
2 and 0.511 through the delay circuit 20. At the same time, the first field color difference signal C'a reproduced from the first magnetic track is inputted to the changeover switch 23 and the III delay circuit 24. The second field color difference signal C'b reproduced from the second magnetic track is input to the changeover switch 23 and the changeover switch 25. The color difference signal output from the changeover switch 23 is 0.50.
The signal is manually inputted to the changeover switch 26 via the delay circuit 21. The output of the I11 delay circuit 24 is input to the changeover switch 24, and the output of 24 is input to 26 manually. The operation of FIG. 13 will be explained below. As can be seen from FIG. 12, the second field scanning line signal S2=Y2+C'b
is reproduced 0.58 times later than the first field scanning line signal 5I=YI→-C'a. Changeover switch 22
is the first. The first field luminance signal Y1 is selected during the field display period, and the second field luminance signal Y2 is selected during the second field display period. Then, during the i-th field display period, the changeover switch 23 selects the first field color difference signal C'a, and the changeover switch 25 selects the second field color difference signal C'b. Then, use the changeover switch 26 to switch the output terminal of the two human power signals for each IH. During the second field period, the changeover switch 23 selects the second field color difference signal C'b, and the changeover switch 23 selects the second field color difference signal C'b.
5 selects the first field color difference signal C'a. 4. Brief Description of the Drawings FIG. 1 is a scanning line signal diagram of an electronic still camera of frame recording mode standard. 2 and 3 are pixel row arrangement diagrams of a solid-state image sensor that generates a scanning line signal of the frame recording type electronic still camera shown in FIG. 1, respectively. FIG. 4 is a pixel row arrangement diagram of an embodiment of a solid-state image sensor of an electronic still camera according to Independent Invention 1. FIG. 5 is a pixel row arrangement diagram of an embodiment of a solid-state image sensor of an electronic still camera representing the second dependent invention. FIG. 6 is a block circuit diagram showing a partial signal processing circuit of an electronic still camera having the pixel row arrangement of FIGS. 4 and 5. FIG. 7 is a color pixel arrangement diagram of one embodiment of a solid-state image sensor used in the electronic still camera of the present invention. 8 and 9 are specific arrangement diagrams of the color pixel arrangement of FIG. 7, respectively. FIG. 10 is a plan view of an embodiment of an electronic still camera according to Independent Invention 2. FIG. 11 is a sectional view of a modified embodiment of the electronic still camera shown in FIG. FIG. 12 is a block circuit diagram representing a modified embodiment of FIG. 6. FIG. 13 shows the electronic still camera of the embodiment shown in FIG. 12. -5e=γ'z +Cb 31-Eng/YaCr-NJuteNak 52=YE!f-CyS)-,
=YlSeC,~10G 田a Figure 3 It's been a long time H c d c d -Mtl 浴tog ba -Htg 7 d od C--74 zu ! r) ^5M Tsubo'e Cy 'f'ccr /'7cTL4/
crt4/'NtI trap RcTF-1□ N t, q-t, 9- Koguya f

Claims (5)

[Claims] (1) Built-in single-chip or multi-chip color solid-state image sensor,
In an electronic still camera device that outputs horizontal scanning line signals constituting at least one TV frame image, the single-chip or multi-chip color solid-state image sensor outputs signal voltages of two adjacent pixel rows in parallel during each horizontal scanning period. , the first color difference signal C1=RY is synthesized using the output signal voltages of the above two adjacent pixel rows, and the second color difference signal C1=RY is synthesized using the output signal voltages of the above two adjacent pixel rows. color difference signal C
2=B-Y, and synthesizes the first field luminance signal Y1 whose main component is the signal voltage of the first pixel row among the output signal voltages of the two adjacent pixel rows, and outputs A second field luminance signal Y whose main component is the signal voltage of the second pixel row among the signal voltages of the two adjacent pixel rows mentioned above.
2, and modulates the first field luminance signal Y1 and the first color difference signal C1 during odd (even) horizontal scanning periods, respectively, and then mixes them to synthesize the first scanning line signal S1, and During the above odd (even) horizontal scanning period, the above second
The field luminance signal and the above-mentioned second color difference signal C2 are modulated and mixed to synthesize the second field scanning line signal S2, and then the above-mentioned first field luminance signal Y1 and the above-mentioned The second color difference signals C2 are respectively modulated and mixed to produce a first field scanning line signal S1.
and the second field luminance signal Y2 and the first color difference signal C during the even (odd) horizontal scanning period.
1 are modulated and mixed to synthesize a second field scanning line signal S2, and the first field scanning line signal S1 and the second field scanning line signal S2, which are output for each horizontal scanning period, are paralleled to different tracks. An electronic still camera device characterized by recording. (2) The odd (even) pixel rows of the above-mentioned single-chip color solid-state image sensor are provided with first color pixels and second color pixels alternately, and the even (odd) pixel rows are provided with third color pixels. 2. The electronic still camera device according to claim 1, wherein fourth color pixels are provided alternately, and the low frequency component of the signal voltage of each pixel row is approximately a luminance signal. (3) The electronic still camera device according to item 2, wherein the color pixels in the Kth pixel row are arranged horizontally displaced by one pixel pitch with respect to the color pixels in the K+2th pixel row. (4) Built-in single-chip or multi-chip color solid-state image sensor,
In an electronic still camera device that outputs a scanning line signal constituting at least one TV frame signal, the single-chip or multi-chip color solid-state image sensor outputs signal voltages of two adjacent pixel rows in parallel in each horizontal scanning period, Then, a luminance signal and a first color difference signal C1=RY are synthesized from the signal voltages of odd (even) pixel rows, and a luminance signal and a second color difference signal C2=B are synthesized from the signal voltages of even (odd) pixel rows. -Y, and record the luminance signal and color difference signal synthesized from the signal voltages of the same pixel rows on the same magnetic track during odd (even) horizontal scanning periods, and the same during even (odd) horizontal scanning periods. An electronic still camera device characterized by recording luminance signals and color difference signals synthesized from signal voltages of pixel rows on separate magnetic tracks. (5) An electronic still camera device incorporating a solid-state image sensor, characterized by having at least one shutter means and an optical film system, and capturing images using either or both of the solid-state image sensor and optical film. An electronic still camera device.