JPH03218191A - Still picture reproducing device - Google Patents

Abstract

PURPOSE:To obtain reproduced output signals corresponding to plural television(TV) systems only by one still picture reproducing device by varying the frequency of a reading clock for still picture data stored in a memory means and the interval of a blanking part in accordance with a selection signal outputted from a selection signal output means. CONSTITUTION:Still picture data stored in the memory means 2 are read out by a reading clock generated from a data reading means 12. The frequency of the reading clock is varied in accordance with the selection signal from the selection signal output means 15 so that the display image of a reproduced output is not distorted. The still picture read out from the means 2 are sent to a blanking adding means 22 to add a blanking part. The interval for adding the blanking part is varied in accordance with the selection signal from the means 15 so that areas other than an area formed by the still picture data out of the display image of reproduced output becomes the blanking part. Consequently, reproduced outputs corresponding to plural TV signal systems can be formed only by one device.

Description

[Detailed Description of the Invention] A. INDUSTRIAL APPLICATION FIELD The present invention relates to a still image reproducing device that reads still image data stored in a memory means and forms a still image reproduction output signal, and in particular, relates to a still image reproduction device that reads still image data stored in a memory means and forms a reproduction output signal of the still image, and in particular, a reproduction output signal that is compatible with a plurality of television signal systems. Concerning what forms a signal.

B. Summary of the Invention The present invention provides a still image reproducing device that varies the frequency of a read clock for still image data stored in a memory means and also varies the period of a blanking section added to the read still image data. By doing so, it is possible to form reproduction output signals compatible with a plurality of television signal systems.

C. 2. Description of the Related Art Conventionally, still image playback devices, such as electronic still cameras and still image file devices, that play back still images on television monitor devices have been known. By the way, the signal format of television broadcasts around the world differs in horizontal scanning frequency and number of lines depending on the region and country, and the current ratio of width to height (aspect ratio) of the screen is 4 =
3 to 16:9 in the future is being considered.

In order to be compatible with these different television signal systems, conventional still image playback devices have been manufactured specifically for each signal system.

D. Problems to be Solved by the Invention However, if a variety of still image playback devices were manufactured to correspond to each television signal system as described above,
The drawback is that it not only takes time and effort to design and develop, but also is expensive. In addition, a still image playback device that supports only one television signal system cannot be played back on a television monitor device that uses other signal systems, and for example, it may not be possible to use it in a country with a different television signal system. There are drawbacks such as not being able to do so.

Furthermore, still image playback devices that are compatible with only one television signal system have different storage formats from still image playback devices that use different television signal systems, so still image data cannot be exchanged, and still image data cannot be exchanged with each other. There are also drawbacks, such as the inability to utilize data.

The present invention has been proposed in view of the above points, and its purpose is to provide still image playback with a novel configuration that allows a single device to generate playback output compatible with multiple television signal systems. The purpose is to provide equipment.

E. Means for Solving the Problems In order to achieve the above-mentioned object, a still image reproducing apparatus according to the present invention includes a memory means for storing still image data and a selection signal for selecting a television signal format of a reproduction output signal. Data reading for reading out still image data stored in the memory means by providing the memory means with a selection signal output means to output and a readout clock whose frequency is varied according to the selection signal from the selection signal output means. means, and blanking addition for adding a blanking section whose period is variable according to a selection signal from the selection signal output means to the still image data read from the memory means to form a reproduction output signal. It will be equipped with the means.

F. Function: In the still image reproducing device according to the present invention, still image data stored in the memory means is read out by a readout clock from the data reading means. The frequency of the read clock at this time is varied according to the selection signal from the selection signal output means, so that the displayed image of the reproduced output is not distorted.

Further, the still image data read from the memory means is sent to the blanking addition means and a blanking portion is added thereto. The period during which the blanking portion is added is varied according to the selection signal from the selection signal output means, and the blanking portion is set in the display image of the playback output other than the area formed by the still image data. Make it. G
．． Embodiment Hereinafter, an embodiment in which a still image reproducing device according to the present invention is applied to an electronic still camera device will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an electronic still camera device 1 to which the present invention is applied.

This electronic still camera device 1 is capable of recording and reproducing still images in one device, and during the recording operation, still image data of the subject is stored in the memory 2 according to the user's operation. During storage and playback operations,
The still image data stored in the memory 2 is read out in response to a user's operation and is made into a reproduction output signal. The configuration and operation of such an electronic still camera device 1 will be explained below by dividing into a recording system and a reproduction system.

[Recording system configuration and its operation]

In this electronic still camera device 1, when a user performs an imaging operation, a CCD (Charge Coupled
A solid-state image sensor 3 such as a device (Device) is driven by an image element drive circuit 4, and an objective lens 5. Aperture mechanism 6. The imaging light of the object that reaches the solid-state imaging device 3 via the shutter mechanism 7 is imaged, and the sample and hold circuit 8 outputs each image of the three primary colors (R, G, B). In this electronic still camera device 1, an NTSC type (N mode to be described later) having an aspect ratio of 4:3 is used as the solid-state image sensor 3, and an image pickup output corresponding to the NTSC system (N mode to be described later) is obtained.

Three primary colors (RG, B) from the sample hold circuit 8 above
Each image pickup output is processed by an analog-to-digital (A/D) conversion circuit 10R. using a clock signal of a predetermined frequency output from the clock generation circuit 9 as a sampling clock. I
After being converted into digital signals by the OC and IOB, the signals are subjected to various correction processes by the processor 11 and sent to the memory 2. Here, the clock signal output from the clock generation circuit 9 has a frequency of, for example, 13.5M}[z so that the image pickup output of the solid-state image pickup device 3 can be converted into a digital signal in a good manner. The imaging output for the effective period is 72 in the horizontal direction for each field.
0 donot and the vertical direction corresponds to each scanning line (line) 2
Set the data to 40 donts.

The memory 2 includes the A/D conversion circuits 10R, 10G.
The image output data digitized by the IOB can be stored over two fields (i.e., one frame) for each of the three primary colors, and data writing and reading are controlled by the write/read control section 12. It will be done. This write/read control section 12 is supplied with a 13.5 MHz clock signal from the cross signal generating circuit 9, and in accordance with this clock signal, data from the pro sensor 11 is stored in the memory 2 for two fields. Write. Thereby, the still image data of the image captured by the solid-state image sensor 3 is stored in the memory 2.

[Configuration of playback system and its operation]

In this electronic still camera device 1, by operating the selection switch 13 in advance before performing a playback operation, the user can select one of the following four television signal formats for the playback output signal output from the output terminal 14. One method can be selected from among the methods.

That is, in the first mode (hereinafter referred to as N mode), the aspect ratio is 4=3 as shown in the screen 30 shown in FIG.
In the second mode (hereinafter referred to as P mode), the playback output signal becomes a playback output signal compatible with the NTSC system, and as shown in the screen 40 shown in FIG. , the third mode (hereinafter referred to as WN
It's called a mode. ), the playback output signal is compatible with the NTSC format with an aspect ratio of 16:9, as shown in the screen 50 shown in FIG. Thus, the playback output signal is compatible with the PAL system with an aspect ratio of 16:9.

Among these, the reproduced output signals of the N mode and WN mode have a horizontal scanning frequency of 15.734 KHz and a field frequency of 59.94 Hz, and each frame has 5
It is composed of 25 scanning lines. In addition, the above P
The reproduced output signals in the mode and WP mode have a horizontal scanning frequency of 15.625 KHz, a field frequency of 50 Hz, and each frame is composed of 625 scanning lines. An invalid period (retrace period) that does not appear on the display screen is provided at the end of each line and each field.
0.60, and the areas corresponding to the above invalid periods are each set to 3.
1,4151.61, and the area corresponding to the valid period that becomes the display screen is 32, 42, 52.62, respectively.
Indicated by

In this electronic still camera device 1, when the user performs a playback operation, a selection signal output circuit 15 connected to the selection switch 13 outputs the N mode, P mode, WN mode, WP selected by the selection switch 13. A selection signal indicating one of the modes is output. This selection signal is given to each switching circuit 16, 17, 18, 19, 20, respectively. In this electronic still camera device, these switching circuits 16, 17.1B, and 19.20 perform the following switching operations in response to the selection signal, so that the playback output in the mode specified by the selection signal is output. It is designed to form and output.

That is, first, in the N mode, the 13.5 MHz clock signal output from the clock generator circuit 9 is directly applied to the write/read control section by the switching operation of the switching circuit 16 in accordance with the selection signal. Sent to 12th. At the same time, in this N mode, the NTS signal indicated by A in FIG.
C horizontal synchronization signal (horizontal scanning frequency 15.734 K
Hz) and a vertical synchronizing signal (field frequency 59.94 lines) shown as A in FIG.
given to 2.

This write/read control section 12 includes the synchronization signal forming circuit 2.
Based on the synchronization signal from l, the clock generation circuit 9
The still image data stored in the memory 2 is read out in the following manner at the timing of the clock signal from.

That is, in the horizontal direction of the screen, as shown by C in FIG. 6, the still image data in the memory 2 is read out for each line from the starting position h0 of the effective period that becomes the display screen, and Predetermined period 1 until end position h+
．． Then, the operation to finish reading out all of the 720 dots of one line data described above is performed.

Also, in the vertical direction of the screen, as shown by C in Figure 7,
For each field, reading still image data from the memory 2 starts from the start position 'fl v0 of the valid period that becomes the display screen, and continues until the end position v1 of this valid period.
An operation is performed to read field data of lines (that is, 480 lines in one frame).

By performing such a read operation, still image data that becomes the display screen area 32 of the N mode screen 30 shown in FIG. 2 is read from the memory 2.

The still image data read from the memory 2 is provided to a blanking addition circuit 22. A blanking data forming circuit 23N is connected to the blanking addition circuit 22 by a switching operation of the switching circuit 18 in response to a selection signal from the selection signal output circuit 15. This blanking data forming circuit 23N responds to the sixth synchronizing signal according to the synchronizing signal given from the first synchronizing signal forming circuit 2l.
The predetermined period t2 from the end position h1 of the validity period shown in C in the figure to the start position h0 of the next validity period, and C in FIG. 7 above.
The period of 22.5 lines from the end position of the valid period shown in ■1 to the start position v0 of the valid period of the next field, that is, the blanking part of the invalid period (retrace period) that does not appear on the display screen. Data is formed and supplied to the blanking addition circuit 22. The blanking addition circuit 22 adds the blanking section data from the blanking signal forming circuit 23N to the still image data from the memory 2. As a result, the blanking addition circuit 22 adds a blanking portion, which becomes the invalid period region 31-, to the still image data which becomes the display screen region 32 of the N-mode screen 30 shown in FIG. 2.

The output of this blanking addition circuit 22 is sent to the color encoder 24N by the switching operation of the switching circuit 19 in response to the selection signal from the selection signal output circuit 15,
NTSC? After being converted into television signal data, it is converted into an analog signal by a digital/analog (D/A) conversion circuit 25N, and is converted into an analog signal by a switching operation of the switching circuit 20 in accordance with the selection signal from the selection signal output circuit 15. It is sent to the output terminal l4.

Therefore, in this N mode, the output terminal 1
With the reproduction output signal outputted from 4, it is possible to reproduce a still image on the entire display screen, as shown by area 32 in FIG.

Further, in the P mode, the 13.5 MHz clock signal output from the clock generation circuit 9 is frequency-divided by 625/525 by the frequency dividing circuit 26, and the switching operation of the switching circuit 16 according to the selection signal is performed. is sent to the write/read control unit l2. At the same time, in this P mode, the PAL horizontal synchronization signal (horizontal scanning frequency 15.625 KHz) shown as B in FIG. 6 formed by the second synchronization signal forming circuit 27 and the vertical synchronization signal shown as B in FIG. A signal (field frequency 50}lZ) is applied to the write/read control section 12 by the switching operation of the switching circuit 17 according to the selection signal.

In this P mode, this write/read control unit 12 stores information in the memory 2 at the timing of the clock signal frequency-divided by the frequency dividing circuit 26 based on the synchronizing signal from the synchronizing signal forming circuit 27. Read out the still image data as follows.

That is, in the horizontal direction of the screen, as shown by D in FIG. 6, for each line, the still image data in the memory 2 is read out from the starting position h0 of the effective period that becomes the display screen, and the period t, x The operation is performed to finish reading out all of the 720 dots of one line data described above up to the position h2 where (525/625) has elapsed.

Also, in the vertical direction of the screen, as shown by D in Figure 7,
For each field, the starting position of the validity period that will be displayed on the above screen. Then, the still image data in the memory 2 is read out, and the field data of 240 lines up to the position v is read out.

By performing such a read operation, still image data is read out from the memory 2, forming an area 43 formed at the upper left of the display screen area 42 of the P mode screen 40 shown in FIG. The area 43 formed by this still image data is the display screen area 32 of the N mode screen 30.
The aspect ratio is 4:3, and each pixel of 480 lines is 720 dots.

The still image data read from the memory 2 is provided to a blanking addition circuit 22. A blanking data forming circuit 23P is connected to the blanking addition circuit 22 by a switching operation of the switching circuit 18 in response to a selection signal from the selection signal output circuit 15. This blanking data forming circuit 23P operates according to the synchronizing signal given from the second synchronizing signal forming circuit 27.
A predetermined period t from the end position h2 of reading still image data in the horizontal direction to the start position h0 of the next valid period shown in D in the figure, and reading out the still image data in the vertical direction shown in D in FIG. 7 above. Forms blanking section data for a period of 72.5 lines (including the above-mentioned invalid period) from the end position v1 to the start position V0 of the valid period of the next field, and supplies it to the blanking addition circuit 22. . The blanking addition circuit 22 adds the blanking portion data from the blanking signal forming circuit 23P to the still image data from the memory 2. As a result, the blanking adder circuit 22 can control the P as shown in FIG.
A blanking portion that becomes the other display screen area 44 and the invalid period area 41 can be added to the still image data that becomes the area 43 formed at the upper left of the display screen area 42 of the mode screen 40.

The output of this blanking addition circuit 22 is sent to the color encoder 24P by the switching operation of the switching circuit 19 in response to the selection signal from the selection signal output circuit 15,
After being converted into PAL composite television signal data, it is converted into an analog signal by a digital-to-analog (D/A) conversion circuit 25P, and is converted into an analog signal by a switching operation of the switching circuit 20 according to the selection signal from the selection signal output circuit 15. It is sent to the output terminal l4.

Therefore, in this P mode, the output terminal 1
With the reproduction output signal outputted from 4, it is possible to reproduce an undistorted still image in the upper left part of the display screen, as shown by area 43 in FIG.

Furthermore, in the WN mode, the 13.5 MHz clock signal output from the clock generation circuit 9 is frequency-divided by 473 by the frequency dividing circuit 28, and is divided by 473 by the switching operation of the switching circuit 16 in response to the selection signal. The data is sent to the write/read control section 12 mentioned above.

At the same time, in this WN mode, the NTS signal indicated by A in FIG.
The horizontal synchronizing signal C and the vertical synchronizing signal shown as A in FIG. 7 are applied to the write/read control section l2 by the switching operation of the switching circuit 17 according to the selection signal.

This write/read control section 12 includes the synchronization signal forming circuit 2.
Based on the synchronization signal from 1, the still image data stored in the memory 2 is read out at the timing of the cross signal divided by the frequency dividing circuit 28 as follows. That is, in the horizontal direction of the screen, as shown by E in the 6th time, for each line, the starting position h. The still image data in the memory 2 is started to be read from the point t, and all of the 720 dots of one line data described above is finished by the position h at which the period t, X (3/4) has elapsed.

Further, in the vertical direction of the screen, as shown by C in FIG. 7, for each field, the starting position v. The still image data in the memory 2 is started to be read out from V, and the field data of 240 lines (that is, 480 lines in the 1 frame) up to the end position V of the valid period is read out. By performing such a read operation, the still image data that forms the nod area 53 formed on the left side of the display screen area 52 of the WN mode screen 50 shown in the fourth figure is read out from the memory 2. .

The area 53 formed by this still image data is similar to the display screen area 32 of the N-mode screen 30, and has an aspect ratio of 4=3 and each pixel of 480 lines is 720 dots.

The still image data read from the memory 2 is provided to a blanking addition circuit 22. A blanking data forming circuit 23WN is connected to the blanking addition circuit 22 by a switching operation of the switching circuit 18 in response to a selection signal from the selection signal output circuit 15. This blanking data forming circuit 23WN performs a blanking data forming circuit 23WN, in response to a synchronizing signal given from the first synchronizing signal forming circuit 21, from the horizontal still image data reading end position h3 shown in FIG. The predetermined period t4 from the start position of the period ffh, and the start position 1 of the validity period of the next field from the end position v1 of the validity period shown in C in FIG.
Data of the blanking section for a period of 22.5 lines up to fV6 is formed and supplied to the blanking addition circuit 22. The blanking addition circuit 22 adds the blanking portion data from the blanking signal forming circuit 23WN to the still image data from the memory 2.

As a result, the blanking addition circuit 22 controls the display screen area 52 of the WN mode screen 50 shown in FIG.
In the still image data forming the area 53 formed on the left side of the
It is possible to add a blanking portion that becomes the other display screen area 54 and the blanking area 5l of the invalid period.

The output of this blanking addition circuit 22 is sent to the color encoder 24WN by the switching operation of the switching circuit 19 in response to the selection signal from the selection signal output circuit 15, and is converted into wide NTSC composite television signal data, and then Digital/analog (D/A) conversion circuit 25
It is converted into an analog signal by WN and sent to the selection signal output circuit 1.
The signal is sent to the output terminal 14 by the switching operation of the switching circuit 20 in response to the selection signal from 5. Therefore, in this WN mode, a still image without distortion can be reproduced on the left side of the display screen, as shown by area 53 in FIG. 4, using the reproduction output signal output from the output terminal l4.

In addition, in the WP mode, the clock signal output from the frequency dividing circuit 26 is further frequency-divided by 473 by the frequency dividing circuit 29, and the writing / The data is sent to the read control unit 12. At the same time, in this WP mode Φ, the second
The PAL horizontal synchronization signal shown by B in FIG. 6 and the vertical synchronization signal shown by B in FIG. 7 formed by the synchronization signal forming circuit 27 of FIG. is applied to the write/read control section 12 by the above.

This write/read control section 12 includes the synchronization signal forming circuit 2.
Based on the synchronization signal from 7, the memory 2
The still image data stored in is read out as follows.

That is, in the horizontal direction of the screen, as shown by F in FIG. 6, for each line, the starting position h. Start reading the still image data in the memory 2 from , and the period t + X (3/4) X (525/625)
The operation is performed to finish reading out all of the above-mentioned 720 dots of one line data by position h4, where . Further, in the vertical direction of the screen, as shown by D in FIG. 7, for each field, the starting position V. The still image data in the memory 2 starts to be read from .TV+, and the field data of 240 lines up to tv+ is read out. By performing such a read operation, still image data is read from the memory 2, forming an area 63 formed at the upper left of the display screen area 62 of the WP mode screen 60 shown in FIG. The nodding area 63 formed by this still image data is the display screen area 3 of the screen 30 in the N mode.
2, the aspect ratio is 4=3, and each pixel of 480 lines is 720 dots.

The still image data read from the memory 2 is provided to a blanking addition circuit 22. A blanking data forming circuit 23WP is connected to the blanking addition circuit 22 by a switching operation of the switching circuit 18 in response to a selection signal from the selection signal output circuit 15. The blanking data forming circuit 23WP performs the blanking data forming circuit 23WP, in response to the synchronizing signal given from the second synchronizing signal forming circuit 27, from the read end position h4 of the still image data in the horizontal direction shown in F in FIG. Starting position of the period h. t, and the start position V of the valid period of the next field from the read end position v1 of the still image data in the vertical direction shown in D in FIG. The data of the blanking section for the period of 72.5 lines (including the above-mentioned invalid period) up to 72.5 lines is formed and supplied to the blanking addition circuit 22. The blanking addition circuit 22 adds the blanking portion data from the blanking signal forming circuit 23WP to the still image data from the memory 2. As a result, the blanking addition circuit 22 adds the still image data to the area 63 formed at the upper left of the display screen area 62 of the screen 60 in the WP mode shown in FIG. It is possible to add a blanking part that becomes the invalid period area 6l. The output of this blanking addition circuit 22 is sent to the color encoder 24WP by the switching operation of the switching circuit 19 in response to the selection signal from the selection signal output circuit 15, and is converted into wide PAL composite television signal data, and then Digital/analog (D/A) conversion circuit 25W
It is converted into an analog signal by P and sent to the selection signal output circuit 15.
The signal is sent to the output terminal 14 by the switching operation of the switching circuit 20 in response to the selection signal from. Therefore, in this WP mode, the area 63 in FIG.
As shown in , it is possible to play a still image without distortion in the upper left corner of the display screen. In this manner, in this electronic still camera device 1, in response to the operation of the selection switch 13, the selection signal output circuit 15 outputs a selection signal for selecting the television system of the reproduced output signal. Then, by varying the frequency of the read clock applied from the write/read control section 12 to the memory 2 in accordance with this selection signal, the still image data stored in the memory 2 can be converted into a reproduced output signal. Still images displayed on the screen are read out so that they are not distorted. Further, by varying the period of the blanking section added by the blanking addition circuit 22 to the still image data read from the memory 2 in accordance with the selection signal, areas other than still images are blanked. section. Note that the blanking areas 44, 54, 64 in the screens 40, 50, 60 shown in FIGS. 3 to 5 are, for example, black, white,
It is preferable to display it in blue or the like, and it may also be possible to change the color according to the user's preference. Therefore, this electronic still camera device 1 is
A single device can generate playback output signals compatible with multiple television signal systems. Therefore, it is not necessary to design and develop electronic still camera devices compatible with a plurality of television signal systems, and the same model can be mass-produced, resulting in inexpensive manufacturing.

In addition, this electronic still camera device 1 can form playback output signals compatible with a plurality of television signal formats, so that, for example, when the user travels to another country where the television signal formats are different, It is also very convenient to be able to play still images on the television equipment in that country.

Furthermore, in such an electronic still camera device 1,
Regardless of the television signal format, still image data can be shared, and the storage format of still image data can be unified.

Note that in the above-mentioned embodiment, still image data is read from the memory 2 to form a playback output signal of a television signal system such as a 525-line NTSC system or a 625-line PAL system. Under the control of the loading/reading control unit 12, still image data of the same line is read out twice in succession from the memory 2, or still image data obtained by averaging the still image data of the upper and lower lines is read out between two lines. By doing so, it is possible to form a reproduction output signal compatible with a high-definition television signal system of 1000 lines or more.

Further, in the above-described embodiment, the present invention is applied to an electronic still camera.
Although the present invention is applied to a camera device, the present invention can also be applied, for example, to a still image file device that stores a large amount of still image data in a memory means and makes it possible to retrieve a necessary still image by random search. It is. By applying the present invention to such still image file devices, it becomes possible to unify the storage format of still image data regardless of the television signal system, so the same still image data can be used all over the world. You will be able to do this.

H. Effects of the Invention The still image reproducing device according to the present invention adjusts the frequency of the read clock for still image data stored in the memory means and the frequency of the still image data read from the memory means in accordance with the selection signal from the selection signal output means. By varying the period of the blanking section added to still image data, it is possible to form reproduction output signals compatible with a plurality of television systems using a single device.

Therefore, the still image playback device according to the present invention has IQ! Since a single device can be compatible with multiple television signal systems, it is possible to save time and effort in design and development, and it can be mass-produced, so it can be manufactured at low cost.

Furthermore, since a single still image playback device according to the present invention can generate playback output signals compatible with multiple television signal systems, for example, when a user travels to another country where the television signal systems are different, It is also extremely convenient, as still images can be played back on the television equipment of that country.

Furthermore, in the still image reproducing device according to the present invention, it is possible to share still image data regardless of the television signal system, and it is possible to unify the storage format of still image data.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electronic still camera device to which the present invention is applied. FIGS. 2 to 5 are schematic diagrams respectively showing screens that can be displayed using the reproduced output signal of the electronic still camera device. Of these, FIG. 2 shows an N mode screen corresponding to the NTSC system, Figure 3 shows the P mode screen corresponding to the PAL system, Figure 4 shows the WN mode screen corresponding to the wide aspect NTSC system, and Figure 5 shows the WP mode screen corresponding to the wide aspect PAL system. show. FIG. 6 is a time chart for explaining the horizontal movement of the screen of the electronic still camera device. FIG. 7 is a time chart for explaining the vertical movement of the screen of the electronic still camera device. l...Electronic still camera device 2...Memory 9...Clock generation circuit 12...Write/read control section 15...Selection signal output circuit 16, 17, 18, 19, 20... Switching circuit 22...
・Blanking addition circuit

Claims (1)

[Scope of Claims] Memory means for storing still image data; selection signal output means for outputting a selection signal for selecting a television signal system of a reproduced output signal; data reading means for applying a read clock whose frequency is variable to the memory means to read still image data stored in the memory means; and still image data read from the memory means;
A still image reproducing device comprising blanking adding means for adding a blanking section whose period is variable according to a selection signal from the selection signal outputting means to form a reproduction output signal.