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Image playback device and method and electronic camera with image playback function

a playback device and playback function technology, applied in the field of image playback devices and methods, and electronic cameras with image playback functions, can solve the problems of tedious and difficult fast-forward skipping of unnecessary locations, containing numerous unnecessary playback images, and poor visual recognition characteristics

Inactive Publication Date: 2002-02-14
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013] A third object of the invention is to provide an image playback device and method which make it possible to extract and playback the conversation of specified speakers, etc.
[0014] A fourth object of the invention is to provide an image playback device and method which make it possible to omit locations of faulty imaging caused by backlighting, etc.
[0015] A fifth object of the invention is to provide an image playback device and method which make it possible to discriminate between panning scenes and scenes other than panning scenes, and to play back scenes of one or the other type.
[0019] A ninth object of the invention is to provide an electronic camera and operating method which make it possible to perform playback with playback locations showing an out-of-focus state omitted.
[0020] A tenth object of the invention is to provide an electronic camera and operating method which make it possible to perform playback with locations imaged at a lens position at the point-blank end omitted.
[0023] A thirteenth object of the invention is to provide an electronic camera and operating method which make it possible to perform playback in which images of objects that have a specified surface temperature are extracted.

Problems solved by technology

However, unedited image files contain numerous unnecessary playback images (hereafter referred to as "unnecessary locations").
During such fast-forward operation, the operator must confirm the end points of unnecessary locations visually, and must therefore constantly monitor fast-forward images which have poor visual recognition characteristics.
As a result, fast-forward skipping of unnecessary locations is tedious and difficult.
Furthermore, it often happens that the operator will not notice the end point of an unnecessary location, and will inadvertently continue fast-forward operation into important playback locations.

Method used

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  • Image playback device and method and electronic camera with image playback function
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second embodiment

[0055] FIG. 2 is a block diagram which illustrates a second embodiment invention.

[0056] The second embodiment is characterized by the fact that in the image playback device of the first embodiment, a time period discriminating means 2 is equipped with a sound quantity detection means 4 which receives audio information from the recorded information read out by the medium playback means 1, and detects the quantity of sound of this audio information, and a silence discriminating means 5 which discriminates silent periods in which the quantity of sound detected by the sound quantity detection means 4 drops below a predetermined sound quantity, and by the fact that the playback display means 3 plays back and displays moving-picture image information contained in the recorded information only during time periods other than the silent periods discriminated by the silence discriminating means 5.

third embodiment

[0057] FIG. 3 is a block diagram which illustrates the invention.

[0058] The third embodiment is characterized by the fact that in the image playback device of the first embodiment, the time period discriminating means 2 is equipped with a speaker characteristic feature extracting means 6 which receives audio information from the recorded information read out by the medium playback means 1, and detects at least one characteristic feature parameter specifying long-term spectrum averages or mean pitch frequencies for the audio information; and a speaker discriminating means 7 which discriminates time periods during which the characteristic feature parameters detected by the speaker characteristic feature extracting means 6 show agreement with pre-registered characteristic feature parameters within permissible ranges, and by the fact that the playback display means 3 plays back and displays moving-picture image information contained in the recorded information only during time periods d...

fourth embodiment

[0059] FIG. 4 is a block diagram of the invention.

[0060] The fourth embodiment is characterized by the fact that in the image playback device of the first embodiment, the time period discriminating means 2 is equipped with a brightness difference detection means 8 which inputs moving-picture image information from the recorded information read out by the medium playback means 1, and detects differences in the brightness level between central and peripheral portions of an image screen, and a backlighting discriminating means 9 which discriminates periods of backlighting (in which imaging is performed under backlit conditions) based on the brightness level differences detected by the brightness difference detection means 8, and by the fact that the playback display means 3 plays back and displays moving-picture image information contained in the recorded information only during time periods other than the periods of backlighting discriminated by the backlighting discriminating means 9...

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Abstract

An image playback device, which may be part of an electronic camera, reads out recorded information that has been recorded on a recording medium. A time period discriminator receives the recorded information read out by the image playback device and discriminates periods of time during which recorded information agrees with certain pre-set conditions. Moving-picture image information contained in the recorded information is played back and displayed in accordance with results of the discrimination.

Description

[0001] This application claims the priority of Japanese Patent Application No. 08-339338 filed Dec. 19, 1996, which is incorporated herein by reference.[0002] This application is a continuation of Application No. 08 / 993,984 filed Dec. 18, 1997 (abandoned).[0003] 1. Field of the Invention[0004] The present invention concerns an image playback device which plays back moving-picture image information, and an electronic camera which has a moving-picture image information playback function. More specifically, the present invention concerns an image playback device and an electronic camera which can select or discard moving-picture image information according to prescribed set conditions, and which can play back and display such information only during certain limited periods.RELATED BACKGROUND ART[0005] In the past, image playback devices and electronic cameras which play back moving-picture image information recorded on a recording medium have been adapted for practical use.[0006] Espec...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N5/78H04N23/40G11B27/10G11B27/28H04N5/765H04N5/77H04N5/781H04N5/85H04N5/92H04N5/93
CPCG11B27/105G11B27/28G11B2220/2525H04N5/772H04N5/783H04N9/87H04N5/9201H04N9/8042H04N9/8205G11B27/005H04N5/85
Inventor AMANO, HARUE
Owner NIKON CORP
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