JPS63268378A - Solid-state image pickup device - Google Patents

Abstract

PURPOSE:To perform a zooming operation in an electronic way without increasing a circuit scale remarkably, by multiplying a vertical selection pulse phiv by (l) times and a horizontal selection pulse phiM by 1/l times outputted from a scanning circuit respectively. CONSTITUTION:When a zoom up mode is realized, a vertical scanning circuit in the scanning circuit 12 outputs the vertical selection pulse strings phiv1', phiv2',...phiv M/2' with a double cycle of a normal mode. Therefore, the photodiodes from a first row to an M/2-th row of a light receiving part 11 are selected in one vertical period(one Tv period), and a sensor output becomes the waveform of two horizontal periods(two TH cycle). Similarly, zooming multiplied by three times, four times,... can be realized by multiplying two-phase clock pulses phiv1', phiv2', by the cycle of three times, four times,....

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a solid-state imaging device as an image input device such as a video camera, and more specifically, to a solid-state imaging device that enables electronic zoom operation during imaging. The present invention relates to a solid-state imaging device.

[Conventional technology]

A solid-state imaging device that uses a solid-state imaging device (hereinafter abbreviated as a sensor) in its imaging section is, for example, a so-called VT integrated with a VTR.
In recent years, R-integrated video cameras have been rapidly developed and commercialized.

The operating principle of such a solid-state imaging device is that the signal charges accumulated in the light-receiving part of the sensor are scanned by a scanning circuit, read out, subjected to signal processing such as γ processing, and output to a monitor (display device). , and recorded on a VTR. The sensor is Miyazawa et al.'s "TSL solid-state image sensor J 1986".
As shown in Figure 4, it usually consists of a light-receiving section and a scanning circuit, and the light-receiving section consists of two-dimensionally arranged photodiodes (photoelectric conversion elements). There is.

Hereinafter, a signal reading method using the sensor will be explained using FIGS. 22 to 24.

FIG. 22 is a schematic diagram of the configuration of a solid-state image sensor that is a simplified version of the cited document. In the figure, 1 is a horizontal scanning circuit, 2 is a vertical scanning circuit, 3 is a vertical gate line, 4 is a horizontal gate line, 5 is a MOS) transistor as a vertical switch,
6 is a MO3I-transistor as a horizontal switch, 7 is an MO3I-transistor as a row selection switch, 8 (
81 to 84) are output terminals, PD, . . . are photodiodes in the m-th row and n-th column.

Also, φ9. is a vertical start pulse, φ93. φVt is a two-phase vertical clock pulse, φH3 is a horizontal start pulse, φ□1. φH2 is a two-phase horizontal clock pulse, and an example of its timing chart is shown in FIG. Vertical start pulse φVS generated during the vertical blanking period of the television signal and one horizontal period ('r
, (,), the vertical scanning circuit 2 receives the two-phase vertical clock pulses φVI+ φ9□ with a cycle of φVI+φ9□, as shown in FIG. 23(a). Vertical selection pulse Φ□ in period
, Φ9□・・・・・・Φ1゜ΦVM+1+ Φ1゜2・
.
, m+l, m+2..., MX photodiodes are not shown, but it is assumed that there are up to the Mth row). FIG. 23(a) shows an example of a so-called two-row simultaneous readout method in which two adjacent rows are selected at the same time, so the vertical selection pulses Φ1 and ΦVm are used. 1 are generated in the same phase.

, in the output period of each vertical selection pulse train ΦI/i (one horizontal period 'rH of the television signal), the 23rd
As shown in Figure (b), within the horizontal blanking period, the horizontal start pulse φH9 and the two-phase horizontal clock pulse φ
B1. φl(2 is input to the horizontal scanning circuit 1, and the horizontal scanning circuit 1 generates horizontal selection pulses φ18, φ0, etc. at the respective phases of the horizontal clock pulses φ□, 5φ, 2.
・Φ□, Φ0.1. Φ0. ...... is output sequentially. This horizontal selection pulse train Φ)IJ(J=112,...
..., N) (The photodiode is not shown, but the Nth
(assuming that there are up to one column) is finished outputting within one horizontal period T.

゛By the vertical selection pulse ΦV and horizontal selection pulse Φi, the vertical switch MO3I - transistor 5, the row selection switch MOS1 - transistor 5, and the horizontal switch MO
3) Turn on and off the transistor and finish selecting all photodiodes within one vertical period TV (for example, photodiodes PD, , are selected at time t1.1).

In Fig. 22, W is a white (transparent) filter, G is a green filter, CY is a cyan filter, and Yo is a yellow filter, which are photodiodes that output light through each filter. , a color signal is created using these color signals. And the white (transparent) W color signal is output terminal 8.
I, the green G color signal is output from the output terminal 8□, and the cyan CVO color signal is output from the output terminal 83 as yellow Y.

The color signals are outputted from output terminals 84, respectively.

(Problem to be solved by the invention) The scanning order in the above-mentioned sensor (solid-state image sensor) is
It corresponds to beam scanning in television receivers, and the second
If an image of the subject is formed on the light-receiving part of the sensor as shown in Figure 4 (a), only the same image as in (a) will be displayed on the TV receiver, as shown in Figure 4 (b). There is no zooming down.

In order to zoom up or zoom down an image and display it on a television receiver, the only way to do so is to use a zoom lens to change the image of the subject that is formed on the sensor, or to perform time conversion using signal processing using field memory, etc. However, the magnification of a zoom lens is limited in terms of cost, size and weight, and signal processing using field memory has drawbacks such as a significant increase in circuit scale. Furthermore, when attempting to display the outputs of a plurality of zoomed-down sensors on the same monitor, time conversion using a field memory or the like is required in this case as well.

An object of the present invention is to provide a solid-state imaging device that allows zooming to be performed electronically without significantly increasing the circuit scale.

[Means for solving problems]

The above purpose is to provide a vertical selection pulse Φ9. output from a scanning circuit in a solid-state imaging device. The period of the horizontal selection pulse Φ□ is multiplied by 1 (zoom up) or 1/l (
This is achieved by zooming down) (e: integer).

In order to zoom up an arbitrary angle of view, it is sufficient to increase the cycle of the selection pulse by 1 and to operate the selection pulses φV and Φ□ at high speed during the blanking period.

Furthermore, in order to display a zoomed-down image at any location on the monitor screen, the period of the selection pulse may be multiplied by 17P and the selection start times of the vertical and horizontal photodiodes may be shifted.

[Effect]

If the period of the vertical selection pulse φ9 is doubled, 1/l in the vertical direction of the image formed on the light-receiving surface of the sensor becomes one vertical period Tv.
If the horizontal selection pulse intermediate period is multiplied by 1, an image of 1/l in the horizontal direction is read out in one horizontal period TN.

Therefore, the image formed on the sensor is zoomed up by a factor of 1 both horizontally and vertically and displayed on the monitor.

On the other hand, vertical selection pulse Φ7. If the period of each horizontal selection pulse Φ□ is multiplied by 1/l, the image formed on the light-receiving surface of the sensor will be 1/l in the vertical direction and 1/l in the horizontal direction of the monitor screen.
1 and then zoomed down to 1/1 and displayed on the monitor. Also, vertical and horizontal selection pulses φ9. Φ
By controlling the output start time of , you can display a zoomed-down image anywhere on the monitor screen.

The zoom-down operation described above can be performed independently for multiple sensors, and since the signal is time-converted using the sensor output, the outputs of the multiple sensors can be easily displayed as a multi-screen on the same monitor. .

〔Example〕

The present invention will now be described in detail with reference to the drawings.

Figure 1 shows an embodiment of the present invention.
j.

Ru.

In the figure, 9 is a lens, 1o is a sensor (solid-state image sensor), 11 is a light receiving section, 12 is a scanning circuit, 13 is a drive circuit,
1-4 is a signal processing circuit, 15 is an electronic viewfinder,
16 is a control circuit, 17 is the output of the sensor 10, 18 is a video output signal, 19 is a drive pulse, and 20 is a control signal.

In response to the control signal 20, the drive circuit 13 generates a start pulse φVS% of 1 each, as shown in the conventional example in FIG.
It outputs drive pulses (normal mode drive pulses) for the scanning circuit, such as two-phase vertical clock pulses φ□ and φV□, which are output at a period of horizontal period T, and outputs drive pulses that realize zoom mode. or

FIG. 2 shows an example of drive pulses for the vertical scanning circuit when realizing the zoom-up mode. FIG. 2 is a timing chart for explaining a first embodiment in which zoom-up is achieved by doubling the period of the vertical selection pulse.

In the same figure, two-phase vertical clock pulse φVl′φV□
' is the two-phase vertical clock φVl in FIG. 24(a).
+ φV□ (i.e., 2T, 4), the vertical scanning circuit in the scanning circuit 12 in FIG.・・・・・・．

Output ΦV M/□'. Therefore, the photodiodes of the light receiving section 11 are selected from the first row to the M/2th row in one vertical period (ITv period), and the sensor output 17 is selected in two horizontal periods (2'ro period) as shown in FIG. The waveform will be

The image formed on the light receiving section 11, the monitor image, and the image at this time are shown in FIG. In the same figure, (a) shows an image formed on the light receiving unit 11 having M rows of photodiodes, and (b) shows an image formed on the (M/2) rows of photodiodes, which is zoomed in twice. This is a monitor image.

That is, among the images formed on the light receiving section 11, (M/2
) is displayed on the monitor screen, making it possible to zoom twice in the vertical direction. Vertical selection pulse train ΦV
By setting the period of I'+Φv2', . Interpolation is required to improve the image quality, and means for interpolating such missing video signals will be described later.

Similarly, two-phase vertical clock pulses φ9. '.

If φ9□' is 3 times, 4 times...the period is 3 times,
It becomes possible to zoom by 4 times. Note that if the period is set to a value other than an integral multiple (such as 1 or 5 times), the sensor scan will be switched in the middle of the horizontal scan of the monitor, which will cause an inconvenience.

FIG. 4 shows a timing chart for explaining a second embodiment in which zoom-up is performed by doubling the period of the vertical selection pulse. In the same figure, the symbol with " added is the pulse in zoom up mode,
What is not added is the pulse in normal mode.

As shown in FIG. 4 of the lecture paper cited above, the vertical scanning circuit usually consists of a vertical shift register and an increment circuit, and has a configuration as shown in FIG. In the figure, 21 is a vertical shift register, and 22 is a switching MOS transistor. In the normal mode, the vertical shift register 21 outputs vertical shift pulses Vl+V2, . φv4
is extracted and the vertical selection pulse ΦVl+ for simultaneous reading of two rows is generated.
φ6... is output.

On the other hand, in zoom up mode (2x zoom), vertical clock pulses φVl' + φv2#, φ9. #, φ
V4# is set to 2 horizontal periods (2T, 1 period), and vertical clock pulse φ9. ', φ94' are 180 degrees each other.
” is shifted. This causes the vertical selection pulses Φ9.′, Φvz
'... are output as shown in FIG. 4, and only one row is selected during one horizontal period T.

Now, if the color filters formed on the photodiode of the light receiving section 11 are W (transparent), Y (yellow), cy (cyan), and G (green) as explained earlier with reference to FIG. The luminance signal Y is Y, = w + g
"" (1) Y2 = y e + c
Two types of luminance signals Y, , Y2, y = -(2), are output every horizontal period T. Here lol, yeah.

cy and g are color filters w, y, ,c, respectively.

This is the signal from the photodiode corresponding to G.

W, yet (3r, g signal to primary color signal r (red) 2g
(green) and b (blue). Therefore, the two types of luminance signals Y, , Y, are respectively, and Yl and Yt are equal. Therefore, Fig. 6 (
Assuming that an image as shown in a) is formed on the light receiving unit 11, the luminance signal is generated in one horizontal period TH as shown in FIG.
A 2x zoomed image (in the vertical direction) with no signal loss is displayed (color signal interpolation will be described later).

Next, zooming up in the horizontal direction will be explained.

FIG. 7 is a timing chart showing an example of horizontal clock pulses φI4+'+φH2' for realizing zoom-up in the horizontal direction, and the horizontal clock pulses φ□, φ in FIG. 23(b). The period is twice that of . As a result, the horizontal selection pulses φ□′, Φ,′ also have double periods, and N
/2 columns is 1 horizontal period T.

selected during the period. Combining this example with the above-mentioned vertical zoom example, the image formed on the light receiving section 11 as shown in FIG. 8(a) is a 2x zoom image as shown in FIG. will be displayed on the monitor screen.

In this case as well, the horizontal clock pulse φ old.

If φ is 3 times, 4 times, ...... period, then 3 times, 4
times.

...A zoomed image can be obtained. Note that the zoom up ratio in the horizontal direction must be an integer (although this is fine, as mentioned above, the vertical zoom up ratio is limited to an integer), so in order to eliminate image distortion, the zoom up ratio in the horizontal direction must also be an integer. It's better to do so.

Next, an embodiment will be described in which the area to be zoomed in on the screen is changed.

FIG. 9 shows the horizontal clock pulse φold in that case.

This is a timing chart showing the horizontal selection pulse φi2'' at high speed during the horizontal branching period.

ΦH2Z ......, Φ,' is generated, and the n+1th
Horizontal selection pulse Φ, which selects the column photodiodes. 1
From then, the horizontal selection pulse ΦMI+ ΦH in FIG. 23(b)
Pulse φ with twice the period of 8..., □I'+...
・, Φ, □7□' are output.

As a result, the photodiodes in N/2 columns from the n+1st column to the
period). Similarly, if the vertical clock pulse is also made faster during the vertical blanking period,
Photodiodes in M/2 rows from the 1st row to the m+M/2nd row are selected in one vertical period (ITv period). This m,
Since n can be set freely, for example, the image formed on the light receiving section 11 shown in FIG. 10(a) can be zoomed in by the set area as shown in FIG. 10(b).

In the first embodiment described above with reference to FIGS. 1 to 3, it was mentioned that video signal loss (black striped pattern) occurs as shown in FIG. 3(b). However, Fig. 11 and 12 show signal interpolation technology to solve this problem.
This will be explained with reference to the figures.

FIG. 11 is a system block diagram of such an interpolation circuit, and FIG. 12 shows waveforms of the main parts in FIG. When the sensor 10 is operating in the normal mode, the signal outputted from the sensor 10 every horizontal period T□ is continuously outputted as shown in FIG. 12(a).

However, in the zoom up mode, as shown in FIG. 2, the signal output from the sensor 10 operates to be output every horizontal period T, as shown in FIG. 12(b), so the signal ( b) by passing it through the delay circuit 103.
The switching circuit 104 selects and combines the signal (c) delayed by T Matrix circuit 1 with a continuous signal similar to
00, where the luminance signal and color signal are created. Also,
The switching circuit 104 may be replaced with an adding circuit.

Similarly, during 4x zoom, the delay circuit 103 (
ff -1) T A signal interpolation can be performed using a delay line.

Next, in the second embodiment described above with reference to FIGS. 4 to 6, it was stated that interpolation of color signals will be described later, but this will be explained with reference to FIGS. 13 and 14. explain.

FIG. 13 shows a system block diagram of the color signal interpolation circuit, and FIG. 14 shows a waveform diagram of the main parts in FIG.

The signal output from the sensor 10 in the zoom-up mode is on the nth line, as shown in FIG. 14(a).

The lines are output one by one in the order of the (n+1)th line and the (n+2)th line, each of which is a signal that repeats (w+g) and (cy+ye), and is always a signal of (r+2g+b). Therefore, the output signal of the sensor 10 is input to the luminance matrix circuit 101 to generate a luminance signal, and on the other hand, the output signal of the sensor 10 (FIG. 14 (a)) and the output signal are delayed by the ITH period in the delay circuit 103. signal (14th
The color signals can be interpolated by inputting the color signals shown in FIG. This example is limited to 2x zoom.

Next, still another embodiment will be described using FIG. 15. In the figure, 1 is a horizontal scanning circuit, 2a is a vertical scanning circuit, and 3 is a horizontal scanning circuit.
01 is the second horizontal scanning circuit, 302 is the second vertical scanning circuit, 8s, 8618? , 8s is a signal output, pus is a horizontal start pulse input to the second horizontal scanning circuit 301,
Pvs represents a vertical start pulse manually input to the second vertical scanning circuit 302. PHII pH1 is a two-phase clock pulse input to the second horizontal scanning circuit 301, Pv
t+Pvz is a two-phase clock pulse input to the second vertical scanning circuit 302. Furthermore, among the reference numerals given in the figure, the same reference numerals as those already mentioned represent the same contents.

In this embodiment, while electronically zooming a partial area of the screen, it is also possible to display which part of the entire screen the electronically zoomed area corresponds to.

Such a display screen (a screen displayed so that it can be seen which area of the entire screen is the zoom area) is hereinafter referred to as a wide view.

In FIG. 15, horizontal scanning circuit 1 and vertical scanning circuit 2a
The operation of electronic zoom using is exactly the same as that described in the previous embodiment, so it will not be explained again. It should be noted that in FIG. 15, the vertical selection pulse, for example Φ1, output from the vertical scanning circuit 2a is the vertical switch M.
O3) The voltage is applied independently to the transistor 5 and the row selection switch MOS).
(commonly applied in the figure), the functions are exactly the same.

By the way, the wide second review, which is a feature of this embodiment, has a signal output a1.8! which is normally obtained by the newly provided second horizontal scanning circuit 301 and second vertical scanning circuit 302.
, 83.84, independent signal outputs 8s, 8-.
8? , 8s. That is, the output line of the newly provided second horizontal scanning circuit 301 and the output line of the conventional horizontal scanning circuit 1 are commonly connected to the horizontal switch MO3I-RANGISTERO. Two horizontal scanning circuits (1
, 301), by making the output parts of these scanning circuits have an open collector circuit configuration, the selection pulses output from the two horizontal scanning circuits can be independently output from the horizontal switch MO3). It is possible to choose.

- Next, the operation will be explained. At the same time as when the horizontal scanning circuit 1 and the vertical scanning circuit 2a start reading the signal charge of the photodiode within the field of view (area) of the electronic zoom (then, by the vertical start pulse Pv and the horizontal start pulse P0,
Second horizontal scanning circuit 301 and second vertical scanning circuit 302
starts scanning, selects photodiodes one after another, and reads out the signal charge of each photodiode. Therefore, the signal output 8.
From 8h to 8h, a video signal of the entire field of view (the entire area) captured by the sensor (the entire light receiving section) is obtained. At this time, signal output 8
．． It goes without saying that video signals within the electronically zoomed angle of view (video signals of a partial area) are obtained at the same timing.

In this case, in one vertical period Tv, the photodiode located within the field of view of the electronic zoom will be selected twice in total by two sets of scanning circuits, so the photodiode located outside the field of view of the electronic zoom will be selected twice. As a result, the charge accumulation time becomes shorter and the read signal level becomes lower.

Therefore, the second scanning circuit (301, 302) outputs a signal 8. In the video signal obtained in ~88, that is, the video signal that shows the entire area of the image formed on the sensor, the brightness level is lowered by the signal within the field of view of the electronic zoom, which is exactly within the field of view range of the electronic zoom. Since the image showing the image becomes darker than the other images, this makes the field of view range clear and realizes a wide view.

As explained above, if the imaging device according to the present embodiment is used, the photographer can shoot not only the electronically zoomed area of the video field of view, but also the surrounding area, so that the photographer can shoot while checking the surrounding area. Even if the subject moves rapidly, it can be easily tracked without losing sight of it.

Furthermore, even when using the sensor shown in FIG.
Since M and N (zoom magnification) in the figure are designated by the control circuit 16 in FIG. 1, the angle of view of the electronic zoom can be easily displayed using this control signal.

Next, an embodiment in which zooming down is performed will be described using a timing chart shown in FIG. 16.

In the figure, T□ is the horizontal blanking period, and the vertical clock pulse φV'l r in the normal mode
Compared to φV□, the vertical clock pulse φ9.
#, φvz", one pulse is added within the TllLK period. As a result, the vertical selection pulse ΦvM#ΦV+*+
lZ ...... is output as shown in Fig. 16,
The photodiodes of the light-receiving section 11 are selected every two rows in the vertical direction (although FIG. 16 takes as an example the case of the two-row simultaneous readout method, the invention is not limited to this).
.

That is, as shown in FIG. 17(a), the light receiving section 11
If an image is formed in , it will be displayed on the monitor screen with the vertical direction reduced as shown in FIG. 2(b).

Similarly, if m (m: integer) pulses are added within the TOIL period, zooming down by 1/(m+1) can be achieved.

Furthermore, by shifting the phase of the vertical start pulse,
As shown in FIG. 17(C), the image can be displayed at any vertical position on the monitor screen.

For example, if one pulse is added every T horizontal period T within one period (zooming down by 1/1.5), image distortion will occur, so if you want to avoid this, the above m should be an integer. limited to.

Horizontal zoom down is by changing the horizontal clock pulse by 1/A.
You can zoom down by 1/1 just by setting the period. If you zoom down in the horizontal direction as well, you can see Figure 17 (b
) is as shown in FIG. 18(a). Furthermore, by shifting the phase of the horizontal start pulse, the horizontal monitor image position can be shifted.
As shown in Figure (b), a zoomed-down image can be displayed anywhere on the monitor screen.

FIG. 19 shows yet another embodiment. In this example, a plurality of (
(4 sensors are taken as an example).

By zooming down the respective formed images to 1/4, it is possible to display them on a single monitor screen. In the figure, 9I to 94 are lenses, and 101 to 10. are the sensors, 17. ~174 are the outputs of the sensors 10I~10, respectively, 414 is a signal processing circuit, 416 is a drive circuit, and 418 is the signal processing circuit 41
The outputs 420 to 4204 are drive pulses.

Drive pulse 420. is the period of the vertical and horizontal clock pulses halved, the driving pulse 420° is the period of the vertical and horizontal clock pulses halved, and the phase of the horizontal start pulse is shifted by 1/2T1, the driving pulse 402
3 is the one in which the period of the vertical and horizontal clock pulses is halved, and the phase of the vertical start pulse is shifted by 1/2 'rv. The drive pulse 4024 is the one in which the period of the vertical and horizontal clock pulses is halved, and the vertical and horizontal clock pulses are Assume that the phases of the start pulses are shifted by 1/2Tv and 1/2T8, respectively.

At this time, sensor 10. ,10□,10. ．． 10. The images formed in Figure 20 (a) and (b) respectively.

Assuming that (C) and (d), the signal processing circuit 4
As shown in FIG. 21, when the output 418 of 14 is displayed on a monitor screen, the monitor image becomes a monitor screen (multi-screen) including four screens each reduced to 1/4.

Sensor output 17 in FIG. ~17. has already been converted into time, so the signal processing circuit 414 converts the sensor output 17. -174 can be realized by simple operations such as switching or adding. Similarly, it is possible to provide an arbitrary number of sensors and realize a corresponding multi-screen.

Note that the drive circuit 416 is connected to the sensor 10. ~104, and the respective drive circuits may be synchronized.

The various clock pulses described above can be easily realized by implementing an RC drive circuit without increasing the circuit scale.

Furthermore, screen disturbances can be suppressed by switching between the normal mode and the zoom mode when the entire screen of the monitor has been scanned, that is, during the vertical blanking period.

〔Effect of the invention〕

According to the present invention, zoom operations or multi-screen creation can be performed electronically in an imaging device without requiring a large-scale circuit such as a field memory. Furthermore, since it is performed electronically, it has the advantage of being able to perform instantaneous zooming, and that zooming operations can be performed over any angle of view range.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a timing chart showing an example of drive pulses for the vertical scanning circuit when realizing the zoom up mode, and FIG. 3 is an explanatory diagram of the mode of zoom up. , FIG. 4 is a timing chart for explaining an embodiment in which zooming is performed by doubling the period of the vertical selection pulse, FIG. 5 is a circuit diagram showing an example of the configuration of a vertical scanning circuit, and FIG. FIG. 7 is a timing chart showing an example of a horizontal clock pulse for realizing zoom-up in the horizontal direction; FIG. 8 is an explanatory diagram of still another aspect of the zoom amplifier; FIG. 9 10 is a timing chart of horizontal clock pulses for explaining an embodiment in which the area to be zoomed up is changed on the screen, FIG. 10 is an explanatory diagram of still another aspect of zooming up, and FIG. A block diagram showing an interpolation circuit for interpolation, FIG. 12 is a waveform diagram of each part signal in FIG. 11, FIG. 13 is a block diagram showing a color signal interpolation circuit, FIG. 14 is a waveform diagram of each part signal in FIG. 13, FIG. 15 is an explanatory diagram showing another embodiment of the present invention, and FIG. 16 is a timing chart of drive pulses used to explain an embodiment that zooms down.
7 and 18 are explanatory diagrams of various zoom-down modes, FIG. 19 is a block diagram showing yet another embodiment of the present invention, and FIG. 20 is a diagram showing each image formed in the embodiment of FIG. 19. Figure 21 is an explanatory diagram of the multi-screen, and Figure 22 is an explanatory diagram of the multi-screen.
23 is a timing chart of drive pulses used in the conventional solid-state image sensor, and FIG. 24 is an explanatory diagram showing the state of the image when zooming is not performed. It is. Explanation of symbols 1...Horizontal scanning circuit, 2...Vertical scanning circuit, 9...
・Lens, 10...Sensor, 11...Light receiving section, 12
...Scanning circuit, 13...Drive circuit, 14...Signal processing circuit, 15...Electronic viewfinder, 16...
・Control circuit. Agent Patent Attorney Akio Namiki 2nd Account (a) (b) 4th UgJ φVS φV1 ---- "]!-Lφy
2 -----1" Sea φVM 2 5th port φV1φv2φ■3φ■4 Figure 6 Figure 7 Figure 8 (a) (b) Figure 9 ΦHn+N/2 Figure 10 (8) (b) :, r Fig. 11 Fig. 12 Fig. 13 Fig. 14 ITH time Fig. 15 pH 8301 pH 1 pH 2 Fig. 16 H (d) Fig. 22 Fig. 123 (a) Fig. 24

Claims (1)

[Claims] 1. A light-receiving section formed by two-dimensionally arranging photoelectric conversion elements;
A scanning circuit that is driven by a clock pulse and scans a photoelectric conversion element in the light receiving section to extract a signal at a period determined by the repetition period of the clock pulse, and a drive circuit that outputs the clock pulse for driving the scanning circuit. In the solid-state imaging device formed by
1. A solid-state imaging device comprising: a control circuit for supplying a switching control signal to the drive circuit for switching to the drive circuit (where l is an integer). 2. In the solid-state imaging device according to claim 1, the repetition period of the clock pulse is switched to l times by a switching control signal supplied from the control circuit, and at the same time, the clock pulse is repeated in a blanking period. An imaging device characterized by speeding up the cycle. 3. In the solid-state imaging device according to claim 1, when the repetition period of the clock pulse is switched to 1/l times by a switching control signal supplied from the control circuit, at the same time, the scanning start time in the scanning circuit is changed. An imaging device characterized by shifting the . 4. In the solid-state imaging device according to claim 1, a plurality of sets consisting of the light receiving section and the scanning circuit are prepared, and the repetition period of the clock pulse is multiplied by l or 1/ for each set.
An imaging device characterized in that the outputs of each set are independently switched and displayed on the same monitor screen. 5. A light receiving section formed by two-dimensionally arranging photoelectric conversion elements;
A scanning circuit that is driven by a clock pulse and scans a photoelectric conversion element in the light receiving section to extract a signal at a period determined by the repetition period of the clock pulse, and a drive circuit that outputs the clock pulse for driving the scanning circuit. In the solid-state imaging device formed by The present invention is characterized in that it is provided with a control circuit that supplies the driving circuit, and a zoom area display means that visually displays where in the entire area of the light receiving section the area to be zoomed up or zoomed down in the light receiving section is located as a result of the control circuit. A solid-state imaging device. 6. In the solid-state imaging device according to claim 5, the zoom area display means is driven by a clock pulse having a normal repetition period that is not multiplied by 1 or 1/1 times the repetition period to display the received light. A solid state comprising: another scanning circuit (second scanning circuit) that independently scans the photoelectric conversion element in the section; and a display device that visually displays the signal extracted by the second scanning circuit. Imaging device.