JPH05161103A - Method and device for displaying video data - Google Patents

Abstract

PURPOSE:To obtain a visually sharp picture by replacing data of one field with data of other field in order to eliminate a blur of a reproduced picture between fields in the case of an object with rapid motion and outputting the replaced data and selecting one field read or one frame read. CONSTITUTION:A video signal being an electric signal by a video camera or the like is given to a video signal processing circuit 1, in whiten well known processing is implemented, the signal is converted into a digital signal by an A/D converter 2 and one frame is stored in a memory 5. A timing signal via a memory controller 6 with a computer 8 or an address signal by an address generating circuit 7 is used for the data stored in this case, the signal is converted into an analog signal by a D/A converter 4 and displayed on a CRT via the circuit 1. When a changeover switch 9 is used to set the frame read mode, after the circuit 7 reads the data of a 1st field and the circuit 7 outputs the address.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video data display method in a video data capturing device and a device for performing the method.

[0002]

2. Description of the Related Art Conventionally, video data of a moving subject is displayed by a video camera or the like by storing the moving subject in a memory and reproducing it again on a CRT or the like.

[0003]

However, when the subject is stored in the memory and replayed on the CRT or the like as in the conventional case, there is a problem that the blurring of the replay image is conspicuous between the fields in the case of a subject having a lot of movement. there were. The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a video data display method and apparatus for obtaining a visually clear image even in a subject that moves rapidly.

[0004]

In order to achieve the above object, the present invention provides: (1) In the case of a subject with a lot of movement, data of one field is used in order to eliminate blurring of a reproduced image between fields. The data is output by replacing the data in other fields, and the user can select either field reading or frame reading. (2) The video data display device includes a video signal processing circuit that performs a process of storing an input video signal in a memory and a process of outputting the reproduced video data to a CRT, and the video data output from the video signal processing circuit. A memory for storing
A memory controller that controls the memory, an address generation circuit that outputs the video data stored in the memory by switching the address to either a frame or field reading mode, and a microphone computer that controls the memory controller and the address generation circuit. The microcomputer is provided with a switching means for setting frame reading or field reading.

[0005]

Therefore, according to the present invention, even when a moving subject is stored in a memory and reproduced by a video camera or the like, blurring between fields can be eliminated, and the user can perform field reading or frame reading. It can be selected and displayed on a CRT or output to a printer or the like.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the construction of the essential parts of a video data display device according to an embodiment of the present invention. In FIG. 1, 1 is a video signal processing circuit for performing processing for storing an input video signal in a memory and processing for outputting video data stored in the memory to a CRT or the like, 2 is an A / D converter, and 3 is A buffer, 4 is a D / A converter, 5 is a memory for storing data output from the video signal processing circuit 1, 6 is a memory controller, 7 is one frame of video data stored in the memory 5, An address generation circuit for switching and outputting an address in any one of field reading modes, 8 is a microcomputer, and 9 is a changeover switch for setting field reading or frame reading. The video signal converted into an electric signal by a video camera or the like is subjected to known processing by the video signal processing circuit 1, converted into a digital signal by the A / D converter 2, and stored in the memory 5 for one frame. The stored data is sent as a timing signal by the microcomputer 8 via the memory controller 6, and the address is sent to the memory 5 by the address generation circuit 7, and the data is read from the memory 5 and D /
It is converted into an analog signal by the A converter 4, and is displayed on a CRT or the like via the video signal processing circuit 1. At this time, when the frame read mode is set by the changeover switch 9, all the data for one frame is read from the memory 5 as in the case of writing. When the field read mode is set, the address generated by the address generation circuit 7 is only the first field, and the data of the second field is replaced with the data of the first field and output. That is, the address generation circuit 7 does not output the address of the second field after reading the data of the first field, but outputs the address of the first field again. In the field read mode, blurring between fields is eliminated and screen blurring is reduced even for a moving subject.

[0007]

As is apparent from the above embodiments, the present invention can eliminate blurring between fields and produce a clearer image even when a moving subject is stored in a memory and reproduced by a video camera or the like. In addition to the above, there is an effect that the user can confirm and select the better one by the field reading or the frame reading and display it on the CRT or output it to a printer or the like.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a video data display device according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Video signal processing circuit, 2 ... A / D converter, 3
... buffer, 4 ... D / A converter, 5 ... memory,
6 ... Memory controller, 7 ... Address generation circuit,
8 ... Microcomputer, 9 ... Field read / frame read changeover switch.

Claims (2)

[Claims] 1. A data of one field is replaced with data of another field and output in order to eliminate a blur of a reproduced image when a subject having a large movement is temporarily recorded, reproduced and displayed by a video camera or the like. A video data display method characterized by the above. 2. A video signal processing circuit that performs processing of storing an input video signal in a memory and processing of outputting the stored data to a CRT and the like, and storing video data output from the video signal processing circuit. A memory, a memory controller that controls the memory, an address generation circuit that outputs the video data stored in the memory by switching the address to either a frame or field reading mode, the memory controller and the address generation circuit A video data display device, comprising: a microcomputer for controlling the above; and a means for setting the microcomputer for frame reading or field reading.