JPH02192376A - Method for reproducing still picture - Google Patents

Abstract

PURPOSE:To reproduce a frame with both fields and to improve picture quality by inputting one field when a still picture reproduction command is inputted and repeatedly reproducing next one field from a head. CONSTITUTION:When a still picture reproduction command 2 is received while tape reproduction processing 1 is executed, tape reproduction processing 6 for one field is executed, after that, tape running stop processing 3 is executed, and repeatedly reading processing 4 by a rotary head is executed for the next field. A field picture signal obtained in the processing 6 is A/D conversion- processed 7 and stored in a field memory 8, and a content from the memory 8 is repeatedly read out and converted into an analog signal in D/A conversion processing 9. The analog signal and a field picture signal obtained in the processing 4 are alternately selected at every field in a selection processing 10, and a still picture is reproduced. As a result, a frame picture can be reproduction-processed 11 by both field pictures, and the reproduced picture having the picture quality, which is the same as picture quality in the case of ordinary reproduction, can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for reproducing still images in a VTR (video tape recorder).

[Conventional technology]

In the conventional still image playback method, as shown in FIG. 2, when a still image playback command 2 is received during tape playback processing 1, tape running stop processing 3 is performed, and the same field on the tape is repeatedly read by a rotating head. 4 and then still image playback 5.

[Problem to be solved by the invention]

Therefore, in the conventional still image reproduction method, since the displayed screen becomes a field still image, only half of the normal number of scanning lines are displayed, resulting in a significant deterioration in image quality.

An object of the present invention is to greatly improve the image quality of still screens by making it possible to display frame still images instead of field still images.

[Means to solve the problem]

To this end, the present invention stores the image signal for the first field in the field memory upon receiving a still image playback command, stops the tape running at the subsequent second field portion, and rotates the second field. The image signal of the first field read out from the field memory and the image signal of the second field obtained from the rotary head are repeatedly read by the head and reproduced alternately.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is an explanatory diagram of one embodiment. In this embodiment, when a still image playback command 2 is received during tape playback processing 1, immediately after that, 1
A tape running (reproducing) process 6 for one field is performed, then a tape running stop process 3 is performed, and a repeated reading process 4 for the next field by the rotary head is performed.

The field image signal obtained by the tape playback process 6 for l fields is converted into a digital signal by the A/D conversion process 7 and stored in the field memory 8, and the contents are repeatedly read out from the field memory 8 and The A conversion process 9 converts it into an analog signal.

Then, the field image signal of the analog signal and the field image signal obtained by the above-mentioned repeated reading process 4 are selected for each field (every 1/30 seconds) in the selection process 10.
Select alternately to play still images.

As a result, one of the odd and even field image signals is obtained by the D/A conversion process 9, and the other field image signal is obtained by the repeated reading process 4, so that a frame image is reproduced from both field images in the process 11.
It is possible to obtain a reproduced image with exactly the same image quality as in the case of normal reproduction.

〔Effect of the invention〕

As described above, in the present invention, when a still image playback command is input,
Since one field is stored in memory and the next field is repeatedly reproduced from the head, frames can be reproduced using both fields, which has the excellent feature of significantly improving image quality.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a still image reproducing method according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a conventional method. Agent Patent Attorney Tsuneaki Nagao

Claims (1)

[Claims] (1) Upon receiving a still image playback command, the image signal for the first field is stored in the field memory, the tape running is stopped at the subsequent second field part, and the second field is repeated by the rotating head. reading,
A still image reproducing method characterized in that a first field image signal read from the field memory and a second field image signal obtained from the rotary head are alternately reproduced.