JPH0479565A - Still image filing system - Google Patents

Abstract

PURPOSE:To directly record an object image on an optical memory disk in a real time by converting the video signal of the object image photographed with a hi-vision camera to digital image data, and writing the image data by one screen on the optical memory disk. CONSTITUTION:When the object image is written on the optical memory disk 13 as a still image, the object image is photographed with a high definition television camera 1, and after an obtained video signal is converted to a digital signal by an A/D converter 2, it is stored in frame memory 5 as the image data by one screen. The image data stored in the frame memory 5 is written on the optical memory disk 15 in the control of an optical memory disk device 12. Thereby, it is possible to directly store the object image on the optical memory disk 13 in real time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a still image file system that extracts one screen of a high-definition television signal in real time and records it as a still image on an optical memory disk.

[Prior art] A color image scanner is used to capture high-definition images onto an optical memory disk (OMD).
A still image file system is known in which images are stored in a still image (oryDisk) and displayed as a still image. Since optical memory disks are capable of storing a large amount of image data, they can be recorded at a very low cost per unit capacity of light.

[Problems to be Solved by the Invention] However, the input of image data using color image scanning is limited to sheet-like originals, printed matter, and wooden boards, and the input of image data using color image scanning is limited to sheet-like manuscripts, printed matter, and wooden boards. Since it can only be directly memorized in about 30 seconds, there are limits to what can be input.

An object of the present invention is to provide a still image file system that can directly record target images on an optical memory disk in real time.9 [Means for Solving the Problem] The still image file system according to the present invention has The video signal of the target image photographed by a digital camera is converted into digital image data by an AD converter, the image data for one screen is captured into a frame memory, and the captured image data is transferred via an optical memory disk device. Configure to write to the optical memory disk.

[Function] In the configuration of the present invention, when writing a target image as a still image to an optical memory disk, the target image is photographed with a high-definition television camera, and the resulting video signal is transferred to A.
After converting it into a digital signal with a D converter, it is stored in a frame memory as image data for one screen. The image data thus stored in the frame memory is written to the optical memory disk under the control of the optical memory disk device.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of a still image file system according to the present invention.

In this embodiment, a video signal of a target image photographed by a high-definition camera 1 is converted by an AD converter 2 into digital image data with a sampling frequency of 74.25 Mllz. The image data converted into digital data by the AD converter 2 is converted into a 4-phase signal by the 1-phase → 4+l (1/4) converter 3, and the signal with a frequency of 74.25 MHz is converted into a signal with a frequency of 18.56 Mllz. converted into a signal. This allows low-speed signal processing.

The output of the 1/4 converter 3 is supplied to an input selector 4 along with output data from a field memory to be described later.

Input selector 4 selects any one from these two input data.
data is selected and supplied to the frame memory 5 having a field memory configuration. The frame memory 5 stores the supplied image data for one screen as still image data, and transfers it to the field memory 7 or the 4-phase to 1-phase (4/1) converter 8 via the output selector 6. The image data transferred to the field memory 7 is transferred to the A
NSI (American National Standards Institute) or rANsI X3.13],
-Interface SC3I established as 1986j
(SmaII Computer System In
interface) 10.

An image scanner 11 is connected to this 5C3IIO via a 5C3I lotus. The output of the FIFO 9 or the output of the image scanner 11 is controlled by the 5C3110 and then sent to the optical memory disk drive (OMDD:
0Ptical Memory Disk Drive
e) Input in 12. In the OMDD 12, FT is stored on the optical memory disk (OMD) 13 inserted inside.
The image data input from the F○9 or the image scanner 11 is written as still image data.

On the other hand, the image data transferred from the output selector 6 to the 4-phase → 1-phase (4/1) converter 8 is
Only the signal converted to a phase signal is returned to a single phase signal,
Other signals are inputted as they are to the DA converter 14, converted into analog signals, and outputted from the output terminal 15.

In this configuration, when writing an image taken with the high-definition camera 1 to the OMD 13 as still image data, reset the FTFO 9, and at the end of the real-time transfer from the frame memory 5 to the field memory 7, write the image from the field memory to the FIFO 9. Start writing image data to. Data is written to FIFO 9 by writing 4-phase data in 1 byte (1 byte) for channels 1 to 4 at 1 μs intervals until the amount of data in FIFO 9 exceeds 16 KB, as shown in Figure 2 (a). 8 bits) at a time in bursts. The amount of data in FIFO9 is 16K
Once B is exceeded, as shown in No. 21m(b'),
Similarly, 4 hides are written in bursts at 1 ms intervals. When the amount of data in F l F OQ becomes less than 12 KB, the interval returns to once every 1 /ZS. In this way, the transfer rate is adaptively switched according to the amount of data in FIFOQ.

When reading still image data from OMD13, 5C3
Under the control of the IIO, one screen worth of still image data is partially read out to the FIFO 9 by the MDD 12. Then, after being transferred to the field memory Y, it is stored in the frame memory 5 via the human selector 4. In this case, FIF○
Transfer from field memo IJ 9 to 7 is F I F
After resenting O9, F I F from OMDDi2
It starts when 64B or more data is written to O9. After that, the amount of data in l” + F 09 is 24K.
Until B is reached, four-phase data is transferred to the field memory (1) in bursts in the order of channels 1 to 4 at intervals of 1 ms. F+FO9 data amount is 2
If it exceeds 4KB, it will be transferred in bursts of 4 highs and 1- at a time with a time interval of 1μs, and if the amount of data in the FO9 becomes less than 16KB, it will be transferred once every 1ms again. return. The data transferred to the field memory is transferred to the frame memory 5 in real time. The still image data for one screen stored in the frame memory 5 in this way is manually inputted to the 4-phase → 1 100 (,l/1) converter 8 via the output selector 6, and is converted back to a 1-phase signal. Thereafter, it is converted into an analog signal by the DA converter 14 and output from the output terminal 15.

A still image file system can be directly stored in an optical memory disk in real time by a John camera, making it possible to provide a still image file system that is not limited by the number of target images. In this case, hi heesh! The scanning signal has 11 scanning lines.
There are 25 lines, and the amount of information is about six times that of the current N']' SC system, so still images can be obtained that are comparable to those of an image scanner.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a still image file system according to the present invention, and FIG. 2 is a timing chart I showing data transfer timing between a field memory and F TFO. 1... High-definition camera, 2... AD converter, 5
... Frame memory, 7... Feel I memory,
9...FTFO812...OMDDi3...OMD
o [Effect of invention]

Claims (1)

[Claims] The video signal of the target image captured by a high-definition television camera is converted into digital image data by an AD converter, the image data for one screen is captured into a frame memory, and this captured image data is transferred to an optical memory disk device. A still image file system characterized by writing to an optical memory disk via.