JPS6278987A - Picture recorder - Google Patents

Abstract

PURPOSE:To record a still picture without producing flickering by storing a picture signal generated in an interlace in a freeze memory once, reading the picture signal of one field from this freeze memory twice in repetition and recording the picture signals of the same field as a still picture signal. CONSTITUTION:When a release switch 11a is pressed, a picture signal stored in a freeze memory part 13 is held. A release signal is supplied to a delay circuit 16, a recording instruction signal is supplied to an optical disk still picture recorder 14 after a delay of a prescribed time, the recorder 14 repeats the picture signal of only one of the first or the second field from the freeze memory part 13, for instance, reads twice and records on an optical disk as one frame picture signal. This still picture is reproduced, and supplied to a monitor 15, and then since the displayed picture is the picture on which the same field picture dislocated by one scanning line is registered, there is no dislocation between the field pictures and accordingly a flickering is not produced on the display picture.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image recording device, and particularly to an image recording device for recording transendoscopic images.

[Prior Art] A conventional image recording device for recording an image signal (herein, T
When recording an image signal obtained by a V camera as a still image on a recording medium such as an optical disk, the release switch is activated, and the interlaced frame image (No. 5) obtained at that time is recorded on the recording medium as a still image signal. [Problems to be Solved by the Invention] According to the conventional image recording device, when the recorded frame image signal is reproduced and displayed as a still image on a display, the first field image and Due to the temporal lag with the second field image, flickering occurs in the displayed image, resulting in a rather childish image.Therefore, an object of the present invention is to provide an image recording device (!?) that records still images without flickering. shall be.

[Means for Solving the Problems] According to the present invention, the image signal generated by interlacing is once stored in a freeze memory, and image No. 13 of one field is read out twice from this freeze memory, The image signals of the same fields 1 to 1 are recorded on the image recording device as still images.

[Effect 1: Since the image signal of the same field is recorded as one frame of image signal, flickering may occur in the displayed image when the image signal of this frame is read from the medium and displayed on the screen. good.

[Example 1] According to the image recording apparatus shown in FIG. 1, the image signal output end and the release signal output end of the electronic device 11 (an endoscope having a solid-state image sensor at the tip) are It is coupled to the roll unit 12. ] The controller 1 to the roll unit 2 have the function of processing the image signal 1q received from the electronic scope 11 and amplifying the release signal. Image signal output ends of the control units 1 to 12 are coupled to a freeze memory section 13. The freeze memory section 13 has an A/D on the input side.
It has a converter, and according to the sales rules, D,,,/A
] There is a bar/). The readout output of the freeze memory section 13 is coupled to an optical disk static single image recording device 14. A monitor 15 is connected to the image recording station 1.

] The release signal output terminal of the 1-roll unit 12 is connected to the hold input terminal of the freeze memory section 13 and also to the delay circuit 16.

In the image recording apparatus described above, an image signal is output from the electronic stage Tl-7''11 and supplied to the control unit 12. After signal processing, this image signal is input to the freeze memory section 13. [In the freeze memory section 13, the image signal is converted into a digital signal and sequentially stored in the memory main body.The image signal is stored in the freeze memory section 13 in an interlaced manner, but when the storage of one frame is completed, the image signal of the next frame is stored. The image signal stored in the imager unit 13 is D/A converted and then supplied to the monitor 17, where it is displayed as a mirror image.

While observing the images displayed on the monitor 17, when an image that requires recording appears, a release switch 11a provided on the electronic camera 11 is pressed. A release signal is output to the controller 1 to the roll unit 12 by actuation of the release switch 11a. The release signal amplified by the control unit 12 is transmitted to the 71 noise memory section 13.
, the image signal stored in the freeze memory section 13 at this time is held in response to No. 13. Immediately, the exchange of image signals in the freeze memory is stopped.

The release signal is also supplied to a delay circuit 16, and this delay circuit 16 supplies a recording command signal to the optical disk recording head 14 after a predetermined time delay from the input of the release signal. Upon receiving the recording command signal, the optical disk still image recording device 14 reads either the first or second field image signal from the freeze memory section 13 (repeatedly, for example, twice), and records one frame image signal on the optical disk. Record as.

Still images recorded on the optical disc are played back and displayed on monitor 1.
5, the image of either the first or second field is displayed on the monitor 15 as one frame image. Since the displayed image is an image obtained by drying the same field image 4 which is shifted by one scanning line, there is no deviation between the field images, and therefore, no flickering occurs in the displayed image.

In addition, when it is determined that there is no need to record the image signal held by the phrase memory section 131 on the II-disc after pressing the release switch 11a (Jl, within the 'F1 delay opening time of the delay circuit 16), the release switch lla is pressed. If left alone, the image signal will not be recorded on the optical disk.In other words, by simply operating the release switch lla, it is possible to hold the desired still image and control recording or non-recording on the recording medium.

FIG. 2 shows a circuit for recording image signals obtained from a general TV camera 22 installed in an endoscope 21. According to this, the image signal of the TV camera 22 is inputted to the camera controller 1 to the roll unit (CCU) 23. Image signals from the CCU 23; -; (1. Sequentially stored in the freeze memory unit 13. The image signals stored in the freeze memory 13 are activated by the operation of a switch (release switch) 24 operated to hold a still image. When the delay circuit 16 outputs a recording command signal after a predetermined delay time in response to the activation signal of the switch 24, the still image signal held in the freeze memory section 13 is recorded on the optical disk.In this case, the above-mentioned Similar to the embodiment, the image signals of the same field are repeatedly read out twice, and the image signals of the same two fields are recorded on the optical disk as one frame image signal. Also, the switch 24 is opened within the delay time. and recording of the still image signal is stopped.

[Effects of the Invention] According to the present invention, image signals obtained from an imaging device are temporarily stored in a freeze memory in sequence, and are held in the memory in response to a release operation. The image signal of the same field of the held image signal is repeatedly read from this memory, and the same field image signal is recorded on the recording medium as a one-frame image signal after a predetermined time delay from the release operation. Therefore, images reproduced from this recording medium are free from flickering. In addition, it is possible to determine whether or not to record at the timing of release, making recording operations easier.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an image recording apparatus according to one embodiment of the present invention, and FIG. 2 is a circuit diagram of an image recording apparatus according to another embodiment. DESCRIPTION OF SYMBOLS 11...Electronic scope, 12...Con1~[Call unit, 13...Freeze memory section, 14...Optical disk still image recording device, 16...Delay circuit, 21
...Endoscope, 22...TV camera, 24...Switch.

Claims (1)

[Claims] In a frame recording type image recording apparatus, an image capturing means for generating an image signal, a memory means for sequentially temporarily storing the image signals from the image capturing means, an image recording means for selectively recording the image signal, and an image recording means for selectively recording the image signal, command signal output means for outputting a write command signal for writing to the recording means; means for inhibiting rewriting of the image signal to the memory means in response to the command signal of the signal output means; and the signal output means. means for outputting a command signal by delaying a command signal for a certain period of time and causing the image recording means to store the stored image signal in the memory means; An image recording device comprising: means for repeatedly reading the same field within a frame period.