Unlock instant, AI-driven research and patent intelligence for your innovation.

Photographing apparatus

A photography device and frame rate technology, applied in the field of photography technology, can solve the problems of small exposure, decreased image signal level, and decreased picture quality, etc.

Active Publication Date: 2010-02-10
PANASONIC CORP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in this photographing device, when photographing at a high frame rate, since the signal charge output cycle of the imaging element is shorter than when photographing at a normal frame rate, the exposure time is shortened and the exposure amount is small. and the video signal level has dropped
[0008] Therefore, when reproducing, there is a disadvantage that images captured at a high frame rate become darker than images captured at a normal frame rate.
[0009] In addition, when it is attempted to compensate for a decrease in the video signal level by amplifying the signal, noise may also be amplified and the picture quality during reproduction may be degraded at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Photographing apparatus
  • Photographing apparatus
  • Photographing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0095]

[0096] The imaging device according to the present invention prevents the signal level fluctuation of the video signal to be recorded by making the exposure amount per frame before the change of the shooting frame rate substantially the same as the exposure amount per frame after the change.

[0097] The exposure time may not be changed so that the exposure amount does not change when the shooting frame rate is switched, but since the maximum exposure time that can be allocated to one frame is determined according to the shooting frame rate, the required exposure time may not be ensured.

[0098] In this case, it is considered to respond by adjusting the gain to increase the magnification or the iris to open the iris when switching the shooting frame rate. The possibility of decreasing and becoming blurred, and when adjusting the aperture, it takes time because the aperture performs a mechanical action, and there is a possibility of missing the timing of the shutter....

Embodiment approach 2

[0354] In Embodiment 1, a method from normal imaging to high-speed imaging was described, but in this embodiment, a method of storing image data captured in high-speed imaging will be described.

[0355]

[0356] When it is desired to record all photographed images during high-speed photography, there are limitations in terms of memory, processing speed, and recording speed.

[0357] Therefore, a more realistic method is to temporarily store the photographed images in the buffer memory 90, from which only the required images are taken out, and recorded in a recording medium 91 such as an IC memory (see image 3 ).

[0358] use Figure 23 with Figure 24 This section explains how to take out only the necessary images and record them.

[0359] Figure 23 It is a drawing showing a method of switching from normal shooting to high-speed shooting and recording a part of the high-speed shooting video.

[0360] This attached drawing and Figure 13 Similarly, timing charts and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A photographing apparatus performs quick switching and photographs an image which is seamless on a switched reproduction screen, in the case of performing photographing by switching to high-speed photographing during photographing at a normal frame rate. Prior to switching, in the photographing apparatus, a diaphragm is transited to the one with which an exposure quantity equivalent to that priorto switching is ensured even in an exposure time which can be ensured for high-speed photographing, and to an exposure time which can be ensured in high-speed photographing.

Description

field of invention [0001] The present invention relates to a photographing device for shooting dynamic images at a predetermined frame rate, in particular to a photographing technique when the frame rate is changed during the photographing process. Background technique [0002] Conventionally, when shooting a moving image, it is common to change the frame rate at the time of shooting (hereinafter referred to as "shooting frame rate"). [0003] For example, slow-motion video can be created by performing high-speed shooting, which is shooting at a higher rate than usual, and playing back at a normal frame rate during playback. [0004] Here, there is a photographing device that changes the photographing frame rate while photographing a moving image (Patent Document 1). This device performs high-speed imaging at a high frame rate when a predetermined trigger is input from the outside of the device during imaging at a normal frame rate, and records an image by changing the sign...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G03B7/08H04N5/238H04N5/335H04N101/00G03B7/097H04N23/75H04N25/00
CPCH04N2101/00H04N5/23245G03B7/08H04N5/238H04N5/232H04N23/633H04N23/667H04N23/75G03B7/087
Inventor 大岛光昭渊上郁雄手塚忠则远间正真
Owner PANASONIC CORP