JP2000209544A - Output method to display device, recording and reproducing device and image pickup device for highly definition still picture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the line flicker disturbance caused to a confirming display device when the video signals consisting of effective scanning lines divided into a prescribed number of fields to be inputted are recorded and reproduced by selecting and outputting a video signal only for a specific scanning line. SOLUTION: In a recording mode, n effective scanning lines are divided into the video signals of k fields consisting of (n/k) effective scanning lines (k: an integer) and outputted from a memory means 5. In a reproducing mode, n effective scanning lines are divided into the video signals of k fields consisting of (n/k) effective scanning lines and outputted from a recording/reproducing part 8. At the same time, every k scanning lines starting at the m-th scanning line (1<=m<=k/2, m: an integer) are outputted in the odd fields and every k scanning lines starting at the (k/2+2)-th scanning line are outputted in the odd fields respectively from the means 5 among the effective scanning lines of video signals consisting of n effective scanning lines.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-definition still image output method for outputting a high-definition still image to a display device used in video equipment such as a video camera, a high-definition still image recording / reproducing apparatus, and a high-definition still image. The present invention relates to an imaging device.

[0002]

2. Description of the Related Art In recent years, with the spread of digital cameras, a still image photographing function has been regarded as important in a video camera. On the other hand, video cameras equipped with various still image shooting functions have appeared, but since video cameras are originally intended to record and play back shot images as NTSC or PAL system television signals, The number of effective pixels in the vertical direction of a recorded still image is limited to about 480 or 576 pixels corresponding to the NTSC and PAL systems. For this reason, the number of pixels of the imaging device that can be used is also limited to some extent.

On the other hand, since the digital camera is not restricted by the television signal, the number of pixels of the recorded still image can be freely determined. For this reason, in some cases, an image pickup device having a large number of pixels is used to output a still image with higher definition than a video camera.

Therefore, in a video camera, similarly,
A still image is shot using an image sensor with a large number of pixels, divided into multiple fields in the NTSC or PAL format, and output to an external device such as a personal computer or video printer. A method of synthesizing a plurality of fields to obtain one high-definition still image is conceivable.

Hereinafter, this method will be briefly described. Here, considering the output of the signal of the NTSC system, taking an image using an image sensor of 960 pixels in which the number of effective pixels in the vertical direction is twice as large as the image sensor for NTSC, a high definition of 960 effective scanning lines is obtained. Consider a method of obtaining a video signal of a still image, dividing the scanning lines into four fields by 240 lines in the NTSC format, and outputting the divided fields. FIG. 14A shows an image of a video signal of a high-definition still image having 960 scanning lines. For convenience of explanation, FIG.
4 (a), and the first scanning line is No. 4 (a). It is described as 1.

(Conventional Example 1) As shown in FIG. 14B, during the first one field period (= 262.5H, H: horizontal scanning period), No. 1 to No. No. 960 among the effective scanning lines. 1 to No. 240 are sequentially output, and in the next one field period, No. 240 is output. 241-No. 480 are output, and thereafter, all the 960 scanning lines are output during the four field periods.

(Conventional Example 2) As shown in FIG.
The first field is No. Starting from 1 and 4 on the scan line
No. for each book. 240 lines up to 957 are output, and the next one field is No. Starting from No. 2 The first scanning line number is set to N for each field, such as output up to 958.
o. 1, No. 2, No. 3, No. Move it to 4.

FIG. 16 shows an example of the configuration of a high-definition still image pickup apparatus for realizing the above-described (conventional example 1) and (conventional example 2). The video signal 2 ′ of the high-definition still image output from the imaging unit 1 and the synchronization signal 3 ′ synchronized with the video signal of the high-definition still image are input to the memory unit 5 and the write control signal generator 4, respectively. The write control signal generator 4 is configured to output a synchronization signal 3 ′ output from the imaging unit 1.
, The address of the memory means 5 is generated. In the memory means 5, the input video signal of the high-definition still image of 960 effective scanning lines is written in accordance with the address generated by the write control signal generator 4. The read control signal generator 6
The address is output at a timing based on the synchronization signal 8 'output from the recording / reproducing unit 8. From the memory means 5,
In accordance with the output of the read control signal generator 6, the video signal data of the written high-definition still image is read.

Here, when an address is generated by a simple increment for both the write address and the read address, an output as shown in (conventional example 1) is obtained from the memory means 5. The write address is set to simple increment, and the read address is set to No. Starting from the storage address of No. 1, the address is moved by 4 scanning lines, and 240 lines up to 957 are read out, and the first read address for each field is No. No. 2 storage address, No. By sequentially moving the storage address of No. 3 and the like, an output as shown in (conventional example 2) is obtained.

In the recording / reproducing section 8, the output signal from the memory means 5 is divided into four fields and recorded. At the time of reproduction, the video signal of the recorded high-definition still image is divided into four fields and output from the recording / reproducing unit 8,
Output from the output terminal 9.

If a video signal divided into four fields and output as described above is synthesized and displayed by a personal computer or a video printer, a video signal of a high-definition still image can be obtained.

[0012]

However, a video signal output of a high-definition still image having such a configuration is performed by using a video signal output from a viewfinder, a monitor, or the like.
Outputting to a display device compatible with the SC system has the following disadvantages.

In the first conventional example, 240 scanning line signals input during the first one field period are a quarter of the area from the top of one still image. However, a monitor supporting the NTSC system displays a signal composed of 240 input scanning lines in the entire vertical direction of the screen, and therefore, a quarter of the area from the top on the screen is quadrupled in the vertical direction. Will be. Similarly, in the second and subsequent fields, the area of 1/4 in order from the top is quadrupled in the vertical direction to 1
It will be displayed on a field-by-field basis, making the image very unsightly.

[0014] Further, according to (Conventional Example 2), the image is not enlarged in the vertical direction, but this causes an increase in line flicker disturbance. This will be described with reference to the schematic diagrams of the line flicker disturbance shown in FIGS. FIG.
(A) is an image when the image composed of 960 scanning lines is correctly displayed on a monitor capable of displaying the image. On the other hand, when output is performed as in (Conventional Example 2), FIG.
It is displayed as shown in FIG. A display operation in the interlace of the display device will be briefly described with reference to FIG.

Now, in the monitor corresponding to the NTSC system, the scanning line input in the first field is indicated by N in FIG.
o. 1 to No. The scanning line input in the second field at the position indicated by No. 240 241-No. 480 are displayed at the respective positions. However, since the scanning of the monitor is completed in two fields, the scanning line input in the third field is at the same position as the scanning line in the first field, and the scanning line input in the fourth field is the scanning line in the second field. Are displayed in the same position as.
Therefore, as shown in FIG. 1 and No.
The group starting with 3 is located at the position of the first field, and N
o. 2 and No. The group starting from 4 will be displayed at the position of the second field. In FIG. 17B, No. 3 and No. 4 as No. 4. 1 and No. Although it is shown slightly below the position 2, it is actually the same position.

FIG. 17 (b) is compared with FIG. 17 (a). It can be seen that the group starting from 2 is displayed shifted by one scanning line below the original display position shown in FIG. In addition, No. The group starting from No. 3 is shifted upward by two scanning lines. It is displayed in the same position as the group starting from 1. Similarly, No. The group starting from No. 4 is also shifted upward by one scanning line and is no. It is displayed in the same position as the group starting with 2.

As a result, line flicker disturbance occurs in which the display position of the scanning line fluctuates up and down by a maximum of two scanning lines every two fields. In addition, No. in FIG. 2 and No. As is apparent from FIG. 3, since the vertical relationship of the scanning lines is partially reversed, there is a problem that the image becomes unsightly.

The present invention is directed to solving the above-mentioned problems of the prior art, which eliminates line flicker interference when displaying on a display device corresponding to a normal television signal, and reduces the vertical relationship between scanning lines. It is an object of the present invention to provide a high-definition still image output method, a high-definition still image recording / reproducing device, and a high-definition still image capturing device capable of correctly maintaining the same.

[0019]

In order to achieve this object, a method for outputting a high-definition still image according to the present invention is applied to an input video signal comprising n (n is an integer) effective scanning lines. One output terminal divides and outputs n effective scanning lines into a video signal of k fields composed of (n / k) (where k is an integer) effective scanning lines. Among the effective scanning lines of the input video signal consisting of the effective scanning lines, the m-th field (1 ≦ m ≦ k / 2; m is an integer) in the odd field
, And in the even-numbered fields, k-th scan lines starting from the (k / 2 + m) -th scan line are output.

From the second output terminal, starting at the (k / 2 + m) th (1.ltoreq.m.ltoreq.k / 2; m is an integer) scanning line in the odd field, scanning every k lines from the even field, Is characterized in that every k scanning lines starting from the m-th scanning line are output.

In the high-definition still image recording / reproducing apparatus, a video signal input comprising n (n is an integer) effective scanning lines and a first synchronization signal synchronized with a video signal comprising n effective scanning lines are provided. A recording / reproducing unit that inputs and records and reproduces a video signal based on a second synchronization signal, and outputs a video signal to a first output terminal during reproduction, and a video including n effective scanning lines during recording. First selecting means for selecting and outputting a video signal from a recording / reproducing unit when reproducing a signal, and memory for storing an output of the first selecting means and outputting to the recording / reproducing unit and a second output terminal Means, a first synchronizing signal at the time of recording, a second synchronizing signal at the time of reproduction, and a second synchronizing signal, and a synchronizing signal output from the second selecting means. Write control signal for generating a write control signal for the memory means. A generator, based on the second synchronization signal timing, characterized in that it comprises a read control signal generator for generating a read control signal of the memory means.

A memory for storing the output of the first selecting means, outputting the signal from the first output port to the recording / reproducing unit, and outputting the signal from the second output port to the second output terminal. Means, and a read control signal generator for generating first and second read control signals of the memory means based on the second synchronization signal timing.

The high-definition still image pickup apparatus performs image pickup and signal processing by an image pickup device having n (n is an integer) pixels corresponding to the number of effective scanning lines in the vertical direction, and the n effective scanning lines And a recording / reproducing unit that records and reproduces the video signal based on the second synchronizing signal, and outputs the video signal to a first output terminal during reproduction. A first selection unit for selecting and outputting a video signal from the imaging unit during recording and a video signal from the recording and reproduction unit during reproduction, and storing an output of the first selection unit. A second synchronizing signal for selecting and outputting a first synchronizing signal from the imaging unit during recording, and a second synchronizing signal during reproduction; Based on the synchronization signal timing output from the selecting means. A write control signal generator for generating a write control signal means, based on the second synchronization signal timing, characterized in that it comprises a read control signal generator for generating a read control signal of the memory means.

A memory for storing the output of the first selecting means, outputting the signal from the first output port to the recording / reproducing unit, and outputting the signal from the second output port to the second output terminal. Means, and a read control signal generating unit for generating first and second read control signals of the memory means based on the second synchronization signal timing.

According to the above arrangement, at the time of recording, the memory means divides the n effective scanning lines into k field video signals composed of (n / k) (where k is an integer) effective scanning lines and outputs them. During reproduction, the recording / reproducing unit divides n effective scanning lines into k-field video signals composed of (n / k) effective scanning lines and outputs the divided signals.
Of the effective scanning lines of the video signal composed of the effective scanning lines,
In an odd field, every k scanning lines starting from the m-th (1 ≦ m ≦ k / 2; m is an integer) scanning line, and in an even field, starting from the (k / 2 + m) -th scanning line.
By outputting each scanning line, line flicker interference when displaying on a display device corresponding to a television signal can be eliminated.

At the time of recording, from the first output port of the memory means, n effective scanning lines are divided into (n / k) (k is an integer) effective scanning lines and k-field video signals are output. During reproduction, the recording / reproducing unit divides a video signal composed of n effective scanning lines into a video signal of k fields composed of (n / k) effective scanning lines and outputs the divided signal. Out of the effective scanning lines of the video signal composed of n effective scanning lines from the second output port of the memory means, the m-th (1 ≦ m ≦ k / 2; m)
(Integer) scanning lines, and every k scanning lines starting from the (k / 2 + m) -th scanning line in the even field are output in correspondence with television signals. Line flicker disturbance at the time of displaying on a display device in which the image is displayed can be eliminated.

Further, in the odd field, (k / 2 +
The scanning line of every k lines starting from the m) th (1 ≦ m ≦ k / 2; m is an integer) scanning line, and the scanning line of every k lines starting from the mth scanning line in the even field, By outputting, it is possible to eliminate line flicker interference when displaying on a display device corresponding to a television signal.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1A is a diagram showing an image of a scanning line of a high-definition still image in Embodiment 1 of the present invention, and FIG. 1B is a positional relationship of the scanning line in each field. FIG. 1C is a schematic diagram showing a positional relationship between a specific scanning line and each field, and FIG. 2A is a monitor capable of displaying 960 scanning lines of a high-definition still image. FIG. 2B shows an image displayed in FIG.
It is a figure which shows the image on a screen when outputting in the form of (c).

Hereinafter, as the first embodiment, a case will be described where a high-definition still image video signal composed of 960 effective scanning lines divided into four fields is output in four field periods, taking the NTSC system as an example. explain. FIG.
(A) is an input signal, and FIGS. 1 (b) and (c) are output signals. FIG. 1 (b) shows an output for a synthesizing device for synthesizing a signal divided into four fields, and FIG. 1 (b) shows an output for a display device for displaying.
By outputting in the form of (c), it is possible to eliminate line flicker disturbance on the display device without reducing the amount of information output to the synthesizing device.

This will be described with reference to FIGS. 2 (a) and 2 (b). When comparing FIG. 2A and FIG. Group starting with No. 1 and No. 1 The display position of the group starting from 3 on the screen does not change. In other words, this is the same as displaying the original 960 scanning lines thinned out every other line, and there is no reversal of the vertical relationship between the scanning lines.

However, since the scanning lines are thinned, aliasing distortion may occur in a portion such as fine horizontal stripes on the screen. In such a case, the input signal is subjected to a vertical low-pass filter process. The signal may be a signal for a display device, and then only a specific scanning line may be output.

If the scanning lines to be output are specified as described above, a video signal of a high-definition still image consisting of scanning lines divided into four fields is output to an interlaced display device compatible with the NTSC system. In this case, it is possible to eliminate the line flicker disturbance and prevent the reversal of the vertical relationship between the scanning lines.

(Embodiment 2) FIG. 3 is a block diagram showing a high-definition still image recording / reproducing apparatus according to Embodiment 2 of the present invention. Here, components having substantially the same functions and corresponding to the components described in FIG. 16 showing the conventional example are denoted by the same reference numerals, and the same applies to the following drawings. 3, reference numeral 2 denotes an input terminal for a video signal, 3 denotes an input terminal for a (first) synchronization signal, 4 denotes a write control signal generator, 5 denotes memory means, 6 denotes a read control signal generator, and 7 denotes a read control signal generator. 2 is an output terminal, 8 is a recording / reproducing unit, 8 'is a (second) synchronizing signal, 9 is a first output terminal, 9' is a reproduced video signal, 10a is a first selector of the first selecting means, 10b
Is a second selector of the second selection means, 11 is a first counter, 12 is a second counter, 13 is an adder, 14 is a field discriminator, and 15 is a third selector. The high-definition still image recording / reproducing apparatus having such a configuration will be described with a concept of writing one scanning line to one address in the memory means 5 for convenience of explanation.

(1) Operation at the time of recording (the first and second selectors 10a and 10b in FIG. 3 select the "R" side) First, in the first selector 10a, a video signal of a high-definition still image is input to the input terminal 2 Then, a video signal of a high-definition still image composed of 960 scanning lines for four fields is selected from the video signal of the NTSC system from the above and output to the memory means 5. Second
The selector 10 b selects a synchronizing signal synchronized with the video signal from the synchronizing signal input terminal 3, and outputs it to the write control signal generator 4. However, the period of this synchronization signal is NTS
It is generally different from the one defined in the C system.

The write control signal generator 4 outputs an address j to the j-th effective scanning line (j is an integer) of the video signal based on the synchronizing signal from the input terminal 3 of the synchronizing signal. , And write addresses (control signals) from 1 to 960 are generated by simple increment. 960 effective scanning lines are written into the memory means 5 in accordance with the output of the write control signal generator 4.

Next, a read control signal generator 6 reads a read address (control signal) for reading 240 scanning lines from the memory means 5 during one field period of the NTSC system.
The first counter 11 and the second counter 1
2, an adder 13, a field discriminator 14, and a third selector 15.

In the field discriminator 14, the recording / reproducing section 8
The odd / even field is discriminated from the synchronizing signal having the same period as the NTSC signal output from the controller, and a discrimination signal is output. The first counter 11 detects the start of the odd field from the output of the field discriminator 14 and
Count value (repeated in the range of 1 ≦ m ≦ k / 2)
Is added to "1". The second counter 12 uses the output value of the first counter 11 as an initial value and adds 4 to the count value each time the start of the horizontal synchronization signal is detected. The third selector 15 selects and outputs "0" when the output of the field discriminator 14 indicates an odd field and "2" when the output of the field discriminator 14 indicates an even field. The adder 13
The output of the third selector 15 is added to the output of the second counter 12 and output as a read address. The operation of each unit as described above is shown in the timing chart of FIG.

As is apparent from the timing chart shown in FIG. 4, with such a configuration, the read control signal generator 6 sets the first field: 1, 5, 9,. 957 Second field: 3, 7, 11, ..., 959 Third field: 2, 6, 10, ..., 958 Fourth field: 4, 8, 12, ..., 960 An address for reading a scanning line every four lines is generated.

The read address output from the read control signal generator 6 is input to the memory means 5. As a result,
As shown in FIG. 1B, all 960 scanning lines are output from the memory means 5 in four field periods. The signal output from the memory means 5 is transmitted to the recording / reproducing unit 8
The recording / reproducing unit 8 records 960 scanning line signals as 4-field video signals.

By performing the above-described configuration and control, all 960 scanning line signals are output to the recording / reproducing unit 8 in four field periods and recorded. Here, if the second output terminal 7 is an output terminal for a display device, the video being recorded can be monitored. However, at this time, some line flicker occurs.

The occurrence of this line flicker is shown in FIG.
This will be briefly described with reference to FIG. FIG. 5A is a diagram illustrating an image displaying a high-definition still image including 960 scanning lines according to the second embodiment, and FIG. 5B is a diagram illustrating an image displaying an interlaced image. FIG. 5A shows 960.
It is an image on a screen of a display device which can be displayed when a scanning line is output. In FIG. 5B showing an image of the display of the interlace, No. 1 and No. 2 and N
o. 3 and No. 4 is actually displayed at the same position. FIG.
In (b), No. 2 and No. 4 is shifted downward.

Now, comparing FIG. 5A and FIG. Group starting with No. 1 and No. 1 The display position on the screen of the group starting from No. 3 does not change. Group starting with No. 2 and No. The display position on the screen of the group starting from 4 shifts by one scanning line. In this case as well, line flicker disturbance appears, but vertical fluctuations of a maximum of one scanning line occur every two fields.
In this case, the amount of change is reduced by half compared to the case of. Also,
Since there is no reversal of the vertical relationship between the scanning lines, the image is not so unsightly.

(2) Playback operation (the first and second selectors 10a and 10b in FIG. 3 select the "P" side) The recording / playback unit 8 includes a playback video signal 9 'and a synchronization signal 8'
Is output. From the first output terminal 9, the reproduced video signal 9 'from the recording / reproducing unit 8 is output as it is. If the first output terminal 9 is an output for a personal computer or a video printer, it is possible to combine the output for four fields into one high-definition still image in an external device.

The first selector 10 a selects the reproduced video signal 8 ′ from the recording / reproducing section 8 and outputs it to the memory means 5. The second selector 10 b selects the synchronization signal 8 ′ from the recording / reproducing unit 8 and outputs it to the write control signal generator 4.

The write control signal generator 4 stores the signal (reproduced video signal 9 ') from the first selector 10a in the memory means only during the first field and the second field based on the input synchronization signal 8'. 5 to generate an address and a write enable signal by simple increment.

At the time of reproduction, the read control signal generator 6
The output of the counter 11 has a fixed value "1". The second counter 12 generates an address for adding “1” to the count value each time the start of the horizontal synchronization signal input using the output of the first counter 11 as an initial value, and outputs the read address as a simple increment. I do. At this time, the read address is as follows: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,.

As a result, in the odd field, the scanning line written in the first field is used, and in the even field, the scanning line written in the second field is used.
An address is generated so that the scanning line written in the field is read from the memory means 5, and a signal read from the memory means 5 is output to the second output terminal 7.

Here, a reproduced signal from the recording / reproducing section 8 will be considered. As described in the recording operation, FIG.
Assuming that the data is divided into four fields and recorded in the form shown in (b), the reproduced signal has exactly the same form. Therefore, if the signal shown in FIG. 1B is written into the memory means 5 only during the first and second fields as described above and the two fields are alternately read, the signal shown in FIG. ) Is obtained.

Therefore, if the second output terminal 7 is used as an output terminal for a display device, line flicker interference can be eliminated as in the first embodiment.

(Embodiment 3) FIG. 6 is a block diagram showing a high-definition still image recording / reproducing apparatus according to Embodiment 3 of the present invention. In FIG. 6, reference numeral 2 denotes an input terminal of a video signal;
Is a synchronizing signal input terminal, 4 is a write control signal generator, 5 is a memory means, 6 is a read control signal generator, 7 is a second output terminal, 8 is a recording / reproducing unit, 8 'is a synchronizing signal, 9' Is a first output terminal, 9 'is a reproduced video signal, 10a is a first selector,
10b is a second selector, 16 is a first counter, 17 is a second counter, 18 is an adder, 19 is a scanning line number discriminator,
Reference numeral 20 denotes a fourth selector, reference numeral 21 denotes a fifth selector, and reference numeral 22 denotes a field discriminator.

In the second embodiment, the function of outputting only a specific scanning line is provided by controlling the read address. In the third embodiment, the same function is provided by controlling the write address. It is something to have.

(1) Recording operation (first, second and second operations in FIG. 6)
The fourth selectors 10a, 10b, and 20 select the "R" side. From the input terminal 2 of the high-definition still image video signal, a video signal composed of scanning lines for four fields is input, and from the input terminal 3 of the synchronization signal. Receives horizontal and vertical synchronization signals synchronized with the video signal. The first selector 10a is connected to the input terminal 2
Is selected and output to the memory means 5. The second selector 10b selects a synchronization signal from the input terminal 3 and outputs the same to the write control signal generator 4.

The write control signal generator 4 generates addresses for writing 960 scanning lines in the memory means 5, and includes first and second counters 16 and 17, an adder 18,
Scanning line number discriminator 19, fourth and fifth selectors 20, 2
1. It comprises a field discriminator 22. The first counter 16 is reset by the vertical synchronization signal from the second selector 10b, and counts the horizontal synchronization signal. At this time,
The output of the first counter 16 determines the reset timing so as to indicate the effective scanning line number input to the memory means 5 from the first selector 10a.

The scanning line number discriminator 19 includes a first counter 1
It determines how many remainders are obtained by dividing the value input from 6 by 4, and outputs a determination signal to the fourth selector 20. The fourth selector 20 selects the output of the scanning line number discriminator 19 and outputs it to the fifth selector 21. The scanning line number discriminator 19 selects “0” when the value selected by the fifth selector 21 according to the scanning line number is “1”, and selects “480” when the value is “2”. "240" is selected when "0", and a discrimination signal is output so as to be controlled to select "720" when it is too "0".

The second counter 17 includes a second selector 10b.
Reset by the vertical sync signal from the
The count value is incremented by one each time it is input.
The fifth selector 21 selects 0, 240, 480, 720 according to the output of the scanning line number discriminator 19, and
8 is output. The adder 18 adds the output of the fifth selector 21 to the output of the second counter 17 and outputs the result as a write address. The operation of each part described above is shown in the timing chart of FIG.

The memory means 5 includes a write control signal generator 4
960 valid scanning lines are written in accordance with the output. At this time, the relationship between the address of the memory means 5 and the written scanning line is as follows: Address 1 to 240: No. , 957, Address 241 to 480: No. , 959, 959 Address 481 to 720: No. , 958, Address 721 to 960: No. 4, 8, 12,..., 960.

The read control signal generator 6 is configured to control the first field: address 1, 2, 3,..., 240 in each field based on a synchronization signal having the same cycle as the NTSC signal output from the recording / reproducing section. 2nd field: address 241, 242, 243, ..., 480 Third field: address 481, 482, 483, ..., 720 4th field: address 721, 722, 723, ..., 960 A read address is generated by simple increment, and the contents of addresses 1 to 960 are read from the memory means 5 over four fields.

The output from the memory means 5 is output to the recording / reproducing unit 8, and 960 scanning line signals are recorded as four-field video signals. This output is output to the second output terminal 7, and a signal is read from the second output terminal 7 in a form as shown in FIG. Here, by making the second output terminal 7 output to the display device, the video being recorded can be monitored. However, occurrence of some line flicker disturbance is the same as in the second embodiment described above.

(2) Playback operation (first, second, second
The fourth selectors 10a, 10b, 20 select the "P" side. The output of the reproduced video signal 9 'from the recording / reproducing unit 8 is supplied to the first output terminal 9 and the first selector 10a, and the synchronizing signal by the reproduction is output. The output of 8 'is supplied to the second selector 10b, the write control signal generator 4, and the read control signal generator 6. From the first output terminal 9, the output signal of the recording / reproducing unit 8 is output as it is. If the first output terminal 9 is an output for a personal computer or a video printer, it is possible to combine the output for four fields into one high-definition still image in an external device.

The first selector 10 a selects the reproduced video signal 9 ′ from the recording / reproducing section 8 and outputs it to the memory means 5. The second selector 10 b selects a synchronizing signal 8 ′ having the same cycle as the NTSC signal output from the recording / reproducing unit 8, and outputs it to the write control signal generator 4.

The write control signal generator 4 generates an address by simply incrementing each time the second counter 17 detects the start of the horizontal synchronizing signal based on the synchronizing signal input from the second selector 10b. . The field discriminator 22 discriminates the first to fourth fields from the synchronization signal 8 'from the recording / reproducing unit 8, and outputs an odd / even field discrimination signal and an enable signal for writing only the first and second field signals. And an enable signal output is supplied to the memory means 5 (not shown).

The fourth selector 20 is provided for the field discriminator 2
2 is selected and output to the fifth selector 21. In the fifth selector 21, based on the odd / even field discrimination signal supplied from the field discriminator 22 via the fourth selector 20, the odd field: 0 is selected, and the even field: 240 is selected. Switch values.

In the adder 18, the second counter 17 and the fifth
The outputs of the selectors 21 are added and output to the memory means 5 as a write address. As a result, the write address is controlled in exactly the same way as the odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,.

Further, in response to the enable signal from the field discriminator 22, the reproduced video signal 9 'via the first selector 10a is written into the memory means 5 only during the first and second fields.

The read control signal generator 6 includes a recording / reproducing unit 8
Odd field: address 1, 2, 3,..., 240 Even field: address 241, 242, 243,. I do.

As a result, the address generation is performed so that the scanning line written in the first field is read from the memory means 5 in the odd field, and the scanning line written in the second field is read in the even field. The output signal is output to the second output terminal 7.

By controlling the writing / reading of the memory means 5 as described above, a signal of the form shown in FIG. 1C appears at the second output terminal 7, so that the second output terminal 7 In the case of an output terminal for a display device, Embodiment 1
In the same manner as in the above, line flicker interference can be removed.

In the second and third embodiments, the output from the second output terminal 7 at the time of reproduction does not cause line flicker interference even when it is output to the display device. Indicates that line flicker disturbance occurs when displayed. The following configuration can be considered as a configuration for eliminating line flicker interference during recording.

(Embodiment 4) FIG. 8 is a block diagram showing a high-definition still image recording / reproducing apparatus according to Embodiment 4 of the present invention. In FIG. 8, reference numeral 2 denotes an input terminal of a video signal;
Is a synchronization signal input terminal, 4 is a write control signal generator, 5 '
Is a memory means, 6 'is a read control signal generator, 7' is a second
8 is a recording / reproducing unit, 8 'is a synchronization signal, 9 is a first output terminal, 9' is a reproduced video signal, 10a is a first selector, 10b is a second selector, 11 is a first counter, 1
2 is a second counter, 13 is an adder, 14 is a field discriminator, 15 is a third selector, 23 is a third counter, 24
Is an adder.

In the fourth embodiment, a memory means 5 'having two read ports and a read control signal generator 6 are provided in place of the memory means 5 having the structure shown in FIG.
Is provided with a third counter 23 and an adder 24.
The other components are exactly the same as in FIG. Therefore, in the following description, the description of the write operation to the memory means 5 'will be omitted because it is the same as that of the second embodiment, and different operations will be described.

(1) Operation at the time of recording In the memory means 5 ', 960 effective scanning lines are written in accordance with the output of the write control signal generator 4, and two signals are output from two read ports. . The read control signal generating section 6 'generates two systems of addresses for reading out 240 scanning lines in one field period from the memory means 5', and comprises a first counter 11, a second counter 12, and an adder. It comprises units 13 and 24, a third counter 23, a field discriminator 14, and a third selector 15. Among them, the operations other than the third counter 23 and the adder 24 are exactly the same as those in the case of FIG.

The third counter 23 adds 4 to the count value each time the start of the horizontal synchronizing signal from the recording / reproducing section 8 is detected. The adder 24 adds the output of the third selector 15 to the output of the third counter 23 and outputs the result as a read address.

Here, the outputs of the adders 13 and 24 are defined as first and second read addresses, respectively. The second read address is as follows: odd fields: addresses 1, 5, 9,..., 957 even fields: addresses 3, 7, 11,. To be generated.

The first and second read address outputs from the read control signal generator 6 'are input to the memory means 5' as read addresses of the first and second read ports (R1, R2), respectively. As a result, as shown in FIG. 1B, all 960 scanning lines are output from the first readout port during the four-field period. Also, an output as shown in FIG. 1C appears from the second read port. The signals read from the first and second read ports (R1, R2) are output to the recording / reproducing unit 8 and the second output terminal 7 '.

By performing the above-described configuration and control, all the signals of 960 effective scanning lines are output to the recording / reproducing unit 8 in the four-field period as shown in FIG. An output as shown in FIG. 1C appears from the output terminal 7 '. Here, the second output terminal 7 '
Is an output terminal for a display device, it is possible to eliminate line flicker interference even during recording.

(2) Operation at the time of reproduction In the read control signal generator 6 ', at the time of reproduction, the memory means 5'
Since the output from the first read port (R1) is not used, the outputs of the first and second counters 11, 12 and the adder 13 for generating the first read address are arbitrary.

The third counter 23 adds "1" to the count value each time the start of the horizontal synchronizing signal input from the recording / reproducing section 8 is detected. The field discriminator 14
The third selector 15 operates in the same manner as during recording. The adder 24 adds the outputs of the third counter 23 and the third selector 15 and outputs the result as a read address for the second read port (R2). At this time, the read address is as follows: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,.

As a result, in the odd field, the scanning line written in the first field is used, and in the even field, the scanning line written in the second field is used.
An address is generated so that the scanning lines written in the field are read from the memory means 5 ', respectively.
The signal read out from the memory means 5 'is output to an output terminal 7' of the memory. Therefore, if the second output terminal 7 'is used as an output terminal for a display device, line flicker interference can be eliminated as in the first embodiment.

The following configuration is also conceivable as a configuration for eliminating line flicker interference during recording.

(Embodiment 5) FIG. 9 is a block diagram showing a high-definition still image recording / reproducing apparatus according to Embodiment 5 of the present invention. In FIG. 9, reference numeral 2 denotes an input terminal of a video signal;
Is a synchronization signal input terminal, 4 is a write control signal generator, 5 '
Is a memory means having two read ports, 6 "is a read control signal generator, 7 'is a second output terminal, 8 is a recording / reproducing unit, 8' is a synchronization signal, 9 is a first output terminal, 9 ' Is a reproduced video signal, 10a is a first selector, 10b is a second selector, 16 is a first counter, 17 is a second counter, 18 is an adder, 19 is a scanning line number discriminator, 20 is a fourth selector, 21 is The fifth selector 22 is a field discriminator.

In the fifth embodiment, the write control signal generator 4 of FIG. 6 described in the third embodiment is the same, and the read control signal generator 6 ″ has addresses 1 to 480 by simple increment. It outputs two read addresses of addresses 1 to 960. As in the fourth embodiment, in the following description, overlapping parts relating to the writing operation to the memory means 5 'will be omitted, and different parts will be described.

(1) Operation at the time of recording 960 effective scanning lines are written into the memory means 5 'in accordance with the output of the write control signal generator 4. At this time, the relationship between the address of the memory means 5 'and the written scanning line is as follows. , 957, Address 241 to 480: No. , 959, 959 Address 481 to 720: No. , 958, Address 721 to 960: No. 4, 8, 12,..., 960.

Next, the read control signal generator 6 "
Based on the synchronization signal 8 'from the recording / reproducing unit having the same period as the TSC signal, the first field: address 1, 2, 3,..., 240 the second field: address 241, 242, 243,. .., 480 Third field: address 481, 482, 483,..., 720 Fourth field: address 721, 722, 723,. Then, all the contents of addresses 1 to 960 are read from the first read port (R1) of the memory means 5 'over four fields.

Simultaneously, a second read address is generated as shown in the following: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,. From the 5 'second read port (R2), the contents of addresses 1 to 240 are output in odd fields, and the contents of addresses 241 to 480 are output in even fields.

The first read port (R) of the memory means 5 '
The output from 1) is output to the recording / reproducing unit 8, and is output as shown in FIG.
960 scanning line signals are divided into four fields and recorded. In addition, the second read port (R
The output from 2) is output to the second output terminal 7 ',
A signal is read out from the output terminal 7 'in the form shown in FIG.

With such a configuration, it becomes possible to output only a specific scanning line from the second output terminal 7 'out of the scanning lines input from the input terminal 2. As a result, exactly the same effects as in the recording operation described in the fourth embodiment can be obtained.

(2) Operation at the time of reproduction As in the fourth embodiment, the first operation of the memory means 5 'is performed at the time of reproduction.
Since the output from the output port (R1) is not used, the first read address output from the read control signal generator 6 "is arbitrary.

The read control signal generator 6 ″ adds “1” to the count value each time the start of the horizontal synchronization signal input from the recording / reproducing unit 8 is detected, and outputs the result as the second read address (R2). At this time, the second read address is as follows: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,. It is possible to obtain exactly the same effect as the operation at the time of reproduction in Embodiment 4. Therefore, if the second output terminal 7 'is an output terminal for a display device, line flicker interference can be eliminated as in Embodiment 1. Can be.

With the above configuration, when recording or reproducing a video signal composed of effective scanning lines for four fields, it is possible to eliminate line flicker disturbance when displayed on a display device.

The case where this is implemented as an imaging device will be described below.

(Embodiment 6) FIG. 10 is a block diagram showing a high-definition still image pickup apparatus according to Embodiment 6 of the present invention. In FIG. 10, reference numeral 4 denotes a write control signal generation unit;
Is a memory means, 6 is a read control signal generator, 7 is a second output terminal, 8 is a recording / reproducing unit, 8 'is a synchronizing signal, 9 is a first output terminal, 9' is a reproduced video signal, and 10a is a reproduced video signal. 1 selector, 10b is a second selector, 11 is a first counter, 12
Denotes a second counter, 13 denotes an adder, 14 denotes a field discriminator, 15 denotes a third selector, and 25 denotes an imaging unit. The sixth embodiment is similar to the third embodiment except that the imaging unit 25 is the same as that shown in FIG.
Is the same as

(1) Operation at the time of recording The image pickup section 25 is a high-definition still image picked up using an image pickup element having 960 pixels (four fields), twice the number of pixels in the vertical direction as an image pickup element for the NTSC system. And a synchronizing signal synchronized with the video signal. However, the period of the synchronization signal is generally different from that defined in the NTSC system.

The output of the video signal and the synchronizing signal of the high-definition still image from the image pickup section 25 are output from the first and second selectors 10a and 10a.
10b. Write control signal generator 4
Outputs an address j to a j-th effective scanning line (j is an integer) in a video signal of a high-definition still image from the imaging unit 25 based on the output of a synchronization signal from the imaging unit 25, Addresses up to 960 are generated by simple increment. 960 valid scanning lines are written into the memory means 5 in accordance with the output of the write control signal generator 4.

In the read control signal generator 6, the first field: 1, 5, 9,..., 957 the second field: 3, 7, 11,. , 958, 4th field: 4, 8, 12,..., 960, a read address is generated and supplied to the memory means 5. The internal operation of the read control signal generator 6 is the same as that in the second embodiment, and a description thereof will not be repeated. As a result, as shown in FIG. 1B, all 960 scanning lines are output from the memory means 5 in four field periods.

The signal output from the memory means 5 is supplied to a recording / reproducing unit 8 and a second output terminal 7, and the recording / reproducing unit 8 records a signal of 960 scanning lines as a video signal of four fields. The output from the second output terminal 7 is
It is supplied to a display device such as a viewfinder or a television monitor, and is displayed by interlaced scanning. In this case, since the video signal in the form of FIG. 1B is output,
It is displayed as shown in FIG.

(2) Operation at the time of reproduction The recording / reproducing section 8 reproduces the reproduced video signal 9 'and the synchronization signal 8'.
Is output. From the first output terminal 9, the reproduced video signal 9 'from the recording / reproducing unit 8 is output as it is. If the first output terminal 9 is an output for a personal computer or a video printer, it is possible to combine the output for four fields into one high-definition still image in an external device. In the first selector 10a, a reproduced video signal 9 'from the recording / reproducing unit 8 is output.
And outputs it to the memory means 5. Second selector 10
In b, the synchronizing signal 8 ′ from the recording / reproducing section 8 is selected and output to the write control signal generating section 4.

The write control signal generator 4 simply increments the signal from the first selector 10a into the memory means 5 only during the first field and the second field based on the input synchronization signal 8 '. To generate an address and a write enable signal.

The read control signal generator 6 generates a read address as shown in the following: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,. . The internal operation of the read control signal generator 6 is exactly the same as that in the second embodiment, and a description thereof will be omitted.

As a result, in the odd field, the scanning line written in the first field is used, and in the even field, the scanning line written in the second field is used.
An address is generated so that the scanning line written in the field is read out from the memory means 5, and a signal in the form shown in FIG. The signal read from the memory means 5 is output to the second output terminal 7.

The output from the second output terminal 7 is supplied to a display device such as a viewfinder or a television monitor, and is displayed by interlaced scanning. In this case, FIG.
Since a signal in the form shown in FIG. 2C is input, FIG.
, And the line flicker disturbance is removed.

As described above, a high-definition video signal obtained by imaging by the imaging unit 25 is recorded by the recording / reproducing unit 8 in the form of FIG. The apparatus can be realized, and the subject can be easily confirmed at the time of photographing. In addition, by outputting to the display device in the form of FIG. 1C at the time of reproduction, line flicker interference can be removed.

(Embodiment 7) FIG. 11 is a block diagram showing a high-definition still image pickup apparatus according to Embodiment 7 of the present invention. In FIG. 11, 4 is a write control signal generator, 5
Is a memory means, 6 is a read control signal generator, 7 is a second output terminal, 8 is a recording / reproducing unit, 8 'is a synchronizing signal, 9 is a first output terminal, 9' is a reproduced video signal, and 10a is a reproduced video signal. 1 selector, 10b is a second selector, 16 is a first counter, 17
Is a second counter, 18 is an adder, 19 is a scanning line number discriminator, 20 is a fourth selector, 21 is a fifth selector, 22 is a field discriminator, and 25 is an imaging unit.

In the seventh embodiment, the structure other than the imaging unit 25 is the same as that of the third embodiment shown in FIG. The operation of the imaging unit 25 is described in the sixth embodiment.
In addition, the operation of each unit other than the imaging unit 25 is completely the same as that of the third embodiment, and thus the duplicated description will be omitted.

The high-definition still image capturing apparatus according to the seventh embodiment configured as described above converts the video signal of the high-definition still image obtained by the imaging by the imaging unit 25 into a signal similar to the sixth embodiment. It is possible to realize an imaging apparatus that can output to a display device while recording in the recording / reproducing unit 8 in the form of FIG. In addition, during reproduction, the data is output to the display device in the form shown in FIG. 1C, so that line flicker interference can be removed.

(Eighth Embodiment) FIG. 12 is a block diagram showing a high-definition still image pickup apparatus according to an eighth embodiment of the present invention. In FIG. 12, 4 is a write control signal generator,
5 'is a memory means, 6' is a read control signal generating section, 7 'is a second output terminal, 8 is a recording / reproducing section, 8' is a synchronizing signal, 9 '
Is a first output terminal, 9 'is a reproduced video signal, 10a is a first output terminal.
A selector, 10b is a second selector, 11 is a first counter, 12 is a second counter, 13 is an adder, 14 is a field discriminator, 15 is a third selector, 23 is a third counter, 24 is an adder, and 25 is an adder. This is an imaging unit, and the other configuration is the same as that of FIG. 8 showing the fourth embodiment.

(1) Operation at the time of recording Here, the operation of the imaging unit 25 is the same as that of the sixth embodiment, and the operation of writing to the memory means 5 'is also the same. Describe different operations.

In the memory means 5 ', 960 effective scanning lines are written in accordance with the output of the write control signal generator 4, and two signals are output from two read ports. The read control signal generator 6 'is connected to the memory means 5'
2 for reading out 240 scanning lines during the field period
Generates system address. Further, the internal operation of read control signal generating section 6 'is exactly the same as that of the fourth embodiment, so that the description is omitted.

The first and second read addresses output from the adders 13 and 24 are: first field: 1, 5, 9,..., 957 second field: 3, 7, 11,. , 959 Third field: 2, 6, 10, ..., 958 Fourth field: 4, 8, 12, ..., 960 and odd field: Address 1, 5, 9, ..., 957 Even field: Generated so as to read out scanning lines every four lines as shown in addresses 3, 7, 11,..., 959.

The first and second read addresses correspond to the first and second read ports (R
1, R2). As a result, from the first and second read ports (R1, R2), respectively, FIG.
An output as shown in FIG. 1B and FIG. 1C will appear. The signals read from the first and second read ports (R1, R2) are respectively transmitted to the recording / reproducing unit 8 and the second read port.
Is output to the output terminal 7 '.

By configuring and controlling as described above,
As shown in FIG. 1B, all the signals of 960 effective scanning lines are output to the recording / reproducing unit 8 in the four-field period, and the signals are output from the second output terminal 7 'as shown in FIG. Output will appear. The output from the second output terminal 7 'is supplied to a display device such as a viewfinder or a television monitor, and is displayed by interlaced scanning. In this case, since the video signal in the form of FIG. 1C is output, the image is displayed as shown in FIG. 2 and line flicker interference is removed.

(2) Operation at the time of reproduction In the read control signal generator 6 ', at the time of reproduction, the memory means 5'
Since the output from the first read port (R1) is not used, the output of the first read address is arbitrary. The second read address output from the adder 24 is as follows: odd field: address 1, 2, 3,..., 240 even field: address 241, 242, 243,.

As a result, in the odd field, the scanning line written in the first field is used, and in the even field, the scanning line written in the second field is used.
An address is generated so that the scanning lines written in the field are read from the memory means 5 ', respectively.
The signal read from the memory means 5 'is output to the output terminal 7'. The output from the second output terminal 7 'is supplied to a display device such as a viewfinder or a television monitor, and is displayed by interlaced scanning. In this case, since the signal in the form shown in FIG. 1C is input, the signal is displayed as shown in FIG. 2B, and line flicker interference is eliminated.

With the above configuration, the video signal of the high-definition still image obtained by the imaging by the imaging unit 25 is recorded by the recording and reproduction unit 8 in the form of FIG.
Since the display device can output in the form shown in FIG. 1C, it is possible to realize an imaging device that does not generate line flicker even during recording, and that allows a subject to be easily confirmed during photographing.

(Embodiment 9) FIG. 13 is a block diagram showing a high-definition still image pickup apparatus according to Embodiment 9 of the present invention. In FIG. 13, the imaging unit 25 is provided in the configuration of FIG. 9 showing the fifth embodiment, and the other configuration is the same. Further, in the ninth embodiment, the operation of the imaging unit 25 is the same as that of the sixth embodiment, and the operation of each unit other than the imaging unit 25 is completely the same, so that the description thereof is omitted.

With the above configuration, as in the eighth embodiment, the video signal of a high-definition still image obtained by imaging with the imaging unit 25 is recorded and reproduced in the form of FIG. 1, the image can be output to the display device in the form shown in FIG. 1C while recording at 8, so that an image pickup apparatus can be realized in which line flicker does not occur at the time of recording and the subject can be easily confirmed at the time of photographing. Become. In addition, FIG.
By outputting to the display device in the form described above, line flicker interference can be removed.

In the description of the first to ninth embodiments, NTS
Although the C method has been described as an example, in the case of the PAL method, since the positional relationship between the scanning lines of the odd field and the even field is reversed, the reading is performed in the first field and the second field in the description of the first to ninth embodiments. The other parts are the same except that the scanning line numbers and the scanning line numbers read in the third and fourth fields are reversed.

[0118]

As described above, according to the present invention,
A video signal consisting of valid scanning lines divided into k fields to be input is output to a display device corresponding to a television signal such as an NTSC system or a PAL system by selectively outputting only specific scanning lines. In this case, line flicker disturbance can be eliminated.

A video signal composed of valid scanning lines divided into k input fields is divided into k fields and recorded, and when reproducing this, a specific valid signal is supplied via a memory means. With a configuration in which only the scanning lines are selected and output, line flicker interference can be removed when the signals are output to a display device compatible with a television signal such as the NTSC system or the PAL system.

When a video signal composed of input effective scanning lines divided into k fields is divided into k fields and recorded and reproduced, a specific effective By adopting a configuration in which only scanning lines are selected and output, line flicker interference can be eliminated when the image is output to a display device compatible with a television signal such as the NTSC system or the PAL system.

Further, a video signal composed of effective scanning lines divided into k fields output from the imaging section is divided into k fields and recorded, and when this is reproduced, it is transmitted via a memory means. By adopting a configuration in which only a specific effective scanning line is selected and output, line flicker interference can be eliminated when the image is output to a display device that supports a television signal such as the NTSC system or the PAL system.

When a video signal composed of effective scanning lines divided into k fields output from the imaging section is divided into k fields and recorded and reproduced,
By selecting and outputting only a specific valid scanning line via the memory means, the NTSC system or PAL
When output to a display device corresponding to a television signal of a system or the like, there is an effect that line flicker interference can be removed.

[Brief description of the drawings]

FIG. 1A is a diagram illustrating an image of a scanning line of a high-definition still image according to the first embodiment of the present invention, FIG. 1B is a schematic diagram illustrating a positional relationship in each field of the scanning line, and FIG. Schematic diagram showing the positional relationship between each field of a specific scanning line

FIG. 2A is a schematic diagram showing an image displayed on a monitor capable of displaying 960 scanning lines of a high-definition still image according to Embodiment 1 of the present invention, and FIG. 1B is a diagram showing FIG.
Schematic diagram showing the image on the screen when outputting in the form of

FIG. 3 is a block diagram showing a high-definition still image recording / reproducing apparatus according to Embodiment 2 of the present invention.

FIG. 4 is a timing chart showing an operation of each unit according to the second embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating an image displaying a high-definition still image including 960 scanning lines according to Embodiment 2 of the present invention, and FIG. 5B is a schematic diagram illustrating an image displaying an interlaced image;

FIG. 6 is a block diagram showing a high-definition still image recording / playback apparatus according to a third embodiment of the present invention.

FIG. 7 is a timing chart showing a state of operation of each unit according to the third embodiment of the present invention.

FIG. 8 is a block diagram showing a high-definition still image recording / playback apparatus according to a fourth embodiment of the present invention.

FIG. 9 is a block diagram showing a high-definition still image recording / playback apparatus according to a fifth embodiment of the present invention.

FIG. 10 is a block diagram illustrating a high-definition still image capturing apparatus according to a sixth embodiment of the present invention.

FIG. 11 is a block diagram showing a high-definition still image capturing apparatus according to a seventh embodiment of the present invention.

FIG. 12 is a block diagram showing a high-definition still image capturing apparatus according to Embodiment 8 of the present invention.

FIG. 13 is a block diagram showing a high-definition still image capturing apparatus according to a ninth embodiment of the present invention.

FIG. 14A is a schematic diagram showing an image of a scanning line of a conventional high-definition still image, and FIG. 14B is a schematic diagram showing a positional relationship in each field of the scanning line.

FIG. 15A is a schematic diagram showing a conventional high-definition still image scanning line image, and FIG. 15B is a schematic diagram showing a positional relationship in another field of another scanning line.

FIG. 16 is a block diagram showing an example of a configuration of a conventional high-definition still image capturing apparatus.

FIG. 17A is a schematic diagram showing an image displaying a conventional image composed of scanning lines of a high-definition still image, and FIG. 17B is a schematic diagram showing an image displaying an interlace.

FIG. 18 is a schematic diagram showing an image of an interlaced display operation of a conventional display device.

[Explanation of symbols]

 1, 25 imaging unit 2, 3 input terminal 4 write control signal generator 5, 5 'memory means 6, 6' read control signal generator 7, 7 'second output terminal 8 recording / reproducing unit 8' synchronization signal 9 First output terminal 9 'Reproduced video signal 10a First selector 10b Second selector 11,16 First counter 12,17 Second counter 13,18,24 Adder 14,22 Field discriminator 15 Third selector 19 Scanning line Number discriminator 20 Fourth selector 21 Fifth selector 23 Third counter

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/21 H04N 5/21 B 5/225 5/225 Z 9/80 9/80 A F term (reference ) 5C021 PA62 PA66 PA79 PA82 PA87 SA01 YA07 YC03 ZA11 5C022 AA13 AB51 AB64 AB68 AC42 AC69 5C053 FA08 FA17 FA21 FA27 GA16 HA33 HA40 JA26 KA01 KA08 KA19 KA20 KA22 KA26 KA30 LA01 LA03 LA06 BA03 BA01 BA01 BA03 GA07 HA33 5C082 AA02 AA27 AA37 BA20 BB15 CA81 CA84 CB01 MM10

Claims (10)

[Claims] 1. A method of outputting a video signal input consisting of n (n is an integer) effective scanning lines as a video signal consisting of (n / k) (k is an integer) effective scanning lines, From the first output terminal, the n effective scanning lines are connected to (n /
k) a video signal of k fields composed of k effective scanning lines is divided and output, and from the second output terminal, among the n effective scanning lines, the m-th (1 ≦ m ≦ k / 2; m is an integer)
, And outputs a k-number of scan lines starting from the (k / 2 + m) -th scan line in an even-numbered field. A still image output method. 2. A method for outputting a video signal input consisting of n (n is an integer) effective scanning lines as a video signal consisting of (n / k) (k is an integer) effective scanning lines, From the first output terminal, the n effective scanning lines are connected to (n /
k) a video signal of k fields composed of k effective scanning lines is divided and outputted, and (k / 2 + m) -th (1 ≦ m) in an odd field among the n effective scanning lines from the second output terminal. m ≦ k /
2; m is an integer) scanning lines starting from the kth scanning line, and starting from the m-th scanning line in the even-numbered fields.
A method for outputting a high-definition still image to a display device, wherein each scanning line is output. 3. A video signal is input to a video signal input composed of n (n is an integer) effective scanning lines and a first synchronization signal input synchronized with the video signal composed of the n effective scanning lines. A recording / reproducing unit for recording and reproducing based on the synchronization signal of No. 2 and outputting a video signal to a first output terminal at the time of reproducing; a video signal composed of the n effective scanning lines at the time of recording; First selecting means for selecting and outputting a video signal from the recording / reproducing unit; memory means for storing an output of the first selecting means and outputting to the recording / reproducing unit and a second output terminal; A second selector for selecting and outputting the first synchronization signal during recording and the second synchronization signal during reproduction; and a synchronization signal timing output from the second selector. Write control for generating a write control signal for the memory means A signal generation unit; and a read control signal generation unit that generates a read control signal for the memory unit based on the second synchronization signal timing. The video signal composed of (n / k) (where k is an integer) valid scanning lines is divided into k field video signals composed of (n / k) effective scanning lines and output. The video signal composed of the n effective scanning lines is divided into k field video signals composed of (n / k) effective scanning lines and output, and the memory means outputs the n effective scanning lines. Among the effective scanning lines of the video signal composed of the following, the scanning line of every k lines starting from the m-th (1 ≦ m ≦ k / 2; m is an integer) scanning line in the odd field, and (k /
Starting from the 2 + m) th scan line, every k scan lines are
A high-definition still image recording / reproducing device characterized by outputting each. 4. At the time of said reproduction, of said effective scanning lines of a video signal composed of said n effective scanning lines from said memory means, starting from a (k / 2 + m) th scanning line in an odd field, every k lines are started. 4. The high-definition still image recording / reproducing apparatus according to claim 3, wherein k-number of scanning lines are output starting from the m-th scanning line in an even-numbered field. 5. In response to a video signal input consisting of n (n is an integer) effective scanning lines and a first synchronization signal input synchronized with the video signal consisting of the n effective scanning lines, a video signal is A recording / reproducing unit for recording and reproducing based on the synchronization signal of No. 2 and outputting a video signal to a first output terminal at the time of reproducing; a video signal composed of the n effective scanning lines at the time of recording; First selecting means for selecting and outputting a video signal from the recording / reproducing unit; storing an output of the first selecting means; transmitting a signal from a first output port to the recording / reproducing unit; A memory means for outputting a signal from the output port to a second output terminal, and a second means for selecting and outputting the first synchronization signal during recording and the second synchronization signal during reproduction. Selecting means; and a synchronization signal timing output from the second selecting means. A write control signal generating section for generating a write control signal for the memory means based on the data, and a first and a second read control signal for the memory means based on the second synchronization signal timing. A read control signal generating section, and at the time of recording, a video signal composed of the n effective scanning lines is output from the first read port of the memory means (n /
k) The image signal is divided into k fields of video signals (where k is an integer) and output, and at the time of reproduction, the recording / reproducing unit converts the video signal composed of n valid scanning lines into (n / k). A) a video signal consisting of n effective scanning lines is output from the second output port of the memory means at the time of recording and reproduction, divided into k field video signals consisting of n effective scanning lines. Of the effective scanning lines, the m-th (1 ≦ m ≦
k / 2; m is an integer) and outputs every k scanning lines starting with the (k / 2 + m) th scanning line in even-numbered fields. High-definition still image recording and playback device. 6. An odd number field of effective scanning lines of a video signal composed of n effective scanning lines from a second output port of the memory means, starting from the (k / 2 + m) th scanning line, and 6. The high-definition still image recording / reproducing apparatus according to claim 5, wherein a scanning line for each line is output, and a scanning line for every k lines is output starting from an m-th scanning line in an even field. 7. An image pickup device having n pixels (n is an integer) corresponding to the number of effective scanning lines in the vertical direction performs imaging and signal processing, and a video signal including n effective scanning lines and a first image signal are processed. An imaging unit that outputs a synchronization signal; a recording / reproduction unit that records and reproduces a video signal based on a second synchronization signal; and outputs a video signal to a first output terminal during reproduction. A first selecting means for selecting and outputting a video signal from the recording / reproducing unit during reproduction, and storing an output of the first selecting means; A memory means for outputting to an output terminal; a second selecting means for selecting and outputting the first synchronizing signal from the imaging unit at the time of recording, and the second synchronizing signal at the time of reproducing; Based on the synchronization signal timing output from the selection means, A write control signal generator for generating a write control signal for the memory means; and a read control signal generator for generating a read control signal for the memory means based on the second synchronization signal timing. The memory means divides the video signal consisting of the n effective scanning lines into k field video signals consisting of (n / k) (k is an integer) effective scanning lines and outputs the divided signal. A video signal composed of the n effective scanning lines is divided into a video signal of k fields composed of (n / k) (k is an integer) valid scanning lines, and is output. Among the effective scanning lines of the video signal composed of the n effective scanning lines, in the odd field, starting from the m-th (1 ≦ m ≦ k / 2; m is an integer) scanning line, every k scanning lines are In even fields k /
Starting from the 2 + m) th scan line, every k scan lines are
A high-definition still image pickup device characterized by outputting each of them. 8. At the time of the reproduction, from the memory means, among the effective scanning lines of the video signal composed of the n effective scanning lines, in the odd field, starting from the (k / 2 + m) th scanning line, every k lines are started. 8. The high-definition still image pickup apparatus according to claim 7, wherein k-number of scanning lines are output starting from the m-th scanning line in the even-numbered field. 9. An imaging device having n pixels (n is an integer) corresponding to the number of effective scanning lines in the vertical direction performs imaging and signal processing, and a video signal composed of n effective scanning lines and a first signal are processed. An imaging unit that outputs a synchronization signal; a recording / reproduction unit that records and reproduces a video signal based on a second synchronization signal; and outputs a video signal to a first output terminal during reproduction. Selecting means for selecting and outputting a video signal from the recording / reproducing unit at the time of reproduction, and storing an output of the first selecting means, and outputting a signal from a first output port Memory means for outputting a signal from a second output port to a second output terminal, respectively, to the recording / reproducing unit, and a first synchronization signal from the imaging unit during recording, and Second selecting means for selecting and outputting the second synchronization signal; A write control signal generator for generating a write control signal for the memory means based on a synchronization signal timing output from the second selection means; and a first control means for the memory means based on the second synchronization signal timing. And a read control signal generating section for generating a second read control signal. At the time of recording, a video signal composed of the n effective scanning lines is transmitted from a first read port of the memory means to (n /
k) The image signal is divided into k fields of video signals (where k is an integer) and output, and at the time of reproduction, the recording / reproducing unit converts the video signal composed of n valid scanning lines into (n / k). A) a video signal consisting of n effective scanning lines is output from the second output port of the memory means at the time of recording and reproduction, divided into k field video signals consisting of n effective scanning lines. Of the effective scanning lines, the m-th (1 ≦ m ≦
k / 2; m is an integer) and outputs every k scanning lines starting with the (k / 2 + m) th scanning line in even-numbered fields. High-definition still image capturing device. 10. An odd field of the effective scanning lines of the video signal consisting of the n effective scanning lines from the second output port of the memory means, starting from the (k / 2 + m) th scanning line and starting at k 10. The high-definition still image capturing apparatus according to claim 9, wherein a scanning line for each line is output, and a scanning line for every k lines is output starting from an m-th scanning line in an even field.