EP0218291A1
Expired / Lapsed
EP
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Television camera having an electronic viewfinder
Assignee: Koninklijke Philips NV
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Filing: 1986-09-23
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Granted: —
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Expires: 2006-09-23
Abstract
Abstract The display screen (VFD) of the electronic viewfinder (VF) displays camera setting information components outside the viewfinder image, so that a camera operator can check the camera setting and possibly modify it to a desired value without having to look away from the viewfinder image (PS') corresponding to the scene to be picked up. In the camera according to the invention the sound recording level at the camera is presented as setting information, more specifically in the form of a bar (MHS') whose length variation has a logarithmic variation. A restful presentation of the sound recording level is the result.
Inventors
- 👤 Johannes Gerrit C/O Int. Octrooibureau Hamering
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:13
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/60; H04N23/63; H04N23/633
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A television camera having an electronic viewfinder, with setting information about a setting at the camera being displayed on a viewfinder display screen, outside a viewfinder image to be picked up, characterized in that the displayed setting information relates to the sound recording level at which the sound associated with the scene to be picked up is recorded and processed by a camera microphone circuit, the strength of the sound recording level being displayed in the form of a length-variable bar having a logarithmic variation.
Claim 2
Dependent Claim
85 words
A television camera having an electronic viewfinder, with setting information about a setting at the camera being displayed on a viewfinder display screen, outside a viewfinder image to be picked up, characterized in that the displayed setting information relates to the sound recording level at which the sound associated with the scene to be picked up is recorded and processed by a camera microphone circuit, the strength of the sound recording level being displayed in the form of a length-variable bar having a logarithmic variation.
Claim 3
Dependent Claim
170 words
A television camera as claimed in Claim 1, characterized in that the camera includes a sound signal peak detection circuit an output of which iscoupled to an input of a signal comparison circuit another input of which is coupled to an output of a logarithmic voltage generator for supplying a voltage logarithmically varying over a part of a line period, an output of the signal comparison circuit being coupled to an input of a gating circuit another input of which is coupled to an output of a line selection circuit for selecting at least one television line per field period, an output of the gating circuit for the supply of a sound recording level indicating signal being coupled to an input of a signal combination circuit another input of which receives a picture or video signal to be displayed by the viewfinder, an output of the signal combination circuit carrying the picture or video signal and the sound recording level indication signal being coupled to an input of the viewfinder.
Claim 4
Dependent Claim
30 words
A television circuit as claimed in Claim 1 or 2, characterized in that the sound recording level bar comprises corresponding parts of two consecutive television lines per picture or frame.
References Cited (Backward Citations)
US3435136A
Cited
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