JPS6229957B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a still image file device capable of editing and transmitting still images extracted from moving images.

In recent years, with the advancement of automation and labor saving in broadcasting systems, still image commercials can be displayed as pre-programmed.
A device that automatically sends out is being considered. Still image commercials require the simultaneous transmission of still images and audio, so if a computer magnetic disk is used as a recording medium, two audio buffer memories and two video buffer memories are required. A file device equipped with this type of recording medium is shown in FIG. In the figure, Vin is a video signal input, 1 is an AD converter that converts the video signal to a digital signal, 2 and 3 are frame memories, respectively, 4 is a DA converter that converts the digitized video signal to an analog signal, and 5 is the magnetic disk, and Vout is the video signal output. Ain is an audio signal input, 6 is an AD converter that converts the audio signal into a digital signal, 7 and 8 are buffer memories,
Reference numeral 9 represents a DA converter for converting a digitized audio signal into an analog signal; 10 represents a data input bus to the magnetic disk 5; and 11 represents a data output bus for the magnetic disk 5.

The basic operation of this device will be explained. The video signal input Vin is digitized by the AD converter 1 and entered into the frame memory 2. At this time, the frame memory 3 is continuously read out and sent out by the AD converter 4 as a video signal output Vout.
After one frame's worth of digital signals fills the frame memory 2, the data in the frame memory 2 is output to the data bus 10 and sequentially written to the magnetic disk 5. At this time, the speed at which data is read from the frame memory 2 must be equal to the speed at which data is written to the magnetic disk 5. During this time, the frame memory 3 is read out continuously at the speed of the video signal.
Sending images. Next, to change the transmitted image, after transmitting one frame of data from the magnetic disk 5 to the frame memory 2 via the data output bus 11, momentarily switch the frame memory to be transmitted as an image from 3 to 2. The frame memory 2 is read out at the speed of the video signal. By operating the two frame memories in this manner, images can be transmitted without interruption. The same operation applies to audio as well. That is, the input audio signal Ain is digitized by the AD converter 6 and sent to the buffer memory 7 or 8.
to go into. Here, the capacity of the buffer memories 7 and 8 is required to be able to store enough audio signals to cover the time required to read out and transfer the audio signals to the disk 5.

If this condition is met, continuous voices are input into the buffer memories 7 and 8 alternately, and while being input into one, the other can be read out and written to the disk 5. Also, in the case of audio reproduction, continuous audio can be reproduced by writing the output data of the magnetic disk 5 into the other buffer memory while reading out the contents of one buffer memory and reproducing it as sound.

In the still image audio file device as described above, the input still image material is a moving image input using a camera VTR or the like. However, when inputting a signal from a video, if one frame's worth of information is stored in the buffer memory, the state of the image will be different between the first and second fields within one frame (the image moves), and flicker may occur within one frame. A situation occurs.

The present invention eliminates the above-mentioned drawbacks by extracting and correcting the flickering portion when one frame of a moving image is instantaneously recorded.

An embodiment of the present invention will be described below. In FIG. 2, 1 to 5 correspond to the same reference numerals in FIG. 12 is a changeover switch circuit, 13 is a control circuit for frame memory 2, 14 is a control circuit for frame memory 3, 15 is an IC memory, and 16 is an IC memory 1.
5 control circuit.

Next, the operation will be explained. Note that the basic operation is the same as that of the conventional example, so the explanation will be omitted. Still image information stored in frame memories 2 and 3
In the still image sent out by the DA conversion circuit 4 and displayed on a monitor, etc., if there is a flickering part as described above, move the cursor 17 to the monitor screen shown in FIG. move. The part indicated by the dotted line in FIG. 3 shows the part to which the cursor has been moved. Here, this cursor MXN is assumed to be equal to or less than the storage capacity of the IC memory 15. Next, the contents of the frame memory 2 at the cursor portion are read out from the frame memory 2 by the control circuit 13 and stored in the IC memory 15.
Write by 6. Here, the contents written to the IC memory 15 are the contents of the first field or the second field for one frame. Next, the contents of the first field or the second field of the cursor portion (flickering portion) in the frame memory 2 stored in the IC memory 15 are changed to the second field or the second field of the cursor portion of the frame memory 2 by the changeover switch circuit 12. Write in 1 field. Here, reading from the IC memory 15 is controlled by a control circuit 16, and writing from the frame memory 2 is controlled by a control circuit 13. Therefore, the part where flickering occurs due to the difference between the first field and the second field in one frame is
Flicker can be removed by setting the second field to the same information. The contents of the frame memory 2 from which the flicker portion has been removed are input to the magnetic disk 5, and a screen without any disturbance can be edited. Furthermore, flicker can also be removed by rewriting the contents of the frame memory 3 in a similar manner. Also, other frame memories can be used instead of the IC memory 15.

As is clear from the above embodiments, according to the present invention, when editing a still image from a moving image, it is possible to correct flicker that occurs within the same frame depending on the timing of writing to the frame memory, and it is possible to easily edit still images of high quality. can do.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional still image file device, FIG. 2 is a block diagram of a still image file device according to an embodiment of the present invention, and FIG. 3 is a diagram showing a still image monitor screen. 2, 5... Frame memory, 12... Changeover switch circuit, 15... IC memory.

Claims (1)

[Claims] 1 at least two frame storage means for storing one frame of video information signal, and one frame of video information signal stored in the storage means is transferred;
In a still image file device, a still image file device is provided with a main storage means for storing one frame, and records and reproduces one frame of the signal from the main storage means as needed, and the video signal inputted to the frame storage means for storing one frame is moving image information. , a small-capacity storage means is provided for storing an area that causes flicker when one frame of moving image information stored in the frame storage means is displayed as a still image; A still image file device comprising means for writing information of the first field or the second field into the second field or a corresponding portion of the first field of the frame storage means.