US 8,711,237 B2 · Circuit device for preventing radiation emission in portable terminal with two cameras

Abstract

A circuit device for preventing radiation emission in a portable terminal with two cameras is provided. The device includes a first camera, a second camera, a processor, and a 3-state buffer. The processor outputs a first control signal controlling an operation of the first camera and a second control signal controlling an operation of the second camera. The 3-state buffer electrically connects between the first camera and the processor, and connects or disconnects between the first camera and the processor depending on the first control signal.

Drawings

Claims16

Dependent claims

A circuit device for preventing radiation emission in a portable terminal with two cameras, the device comprising:

a first camera connected through a 3-state buffer to a shared line comprising at least one of a shared clock line and a shared data line;
a second camera having a higher picture definition than a picture definition of the first camera and connected to the shared line with no buffer therebetween;
a processor for outputting a first control signal controlling an operation of the first camera and of the 3-state buffer through a first terminal and for outputting a second control signal controlling an operation of the second camera through a second terminal;
the shared line between the 3 state buffer and the processor;
and
the 3-state buffer, electrically connected between the first camera and the shared line, for receiving the first control signal and connecting or disconnecting between the first camera and the shared line depending on the received first control signal,
wherein the first control signal and the second control signal have different values,
wherein the 3-state buffer disconnects only the first camera from the shared line at a time of operation of the second camera having the higher picture definition, and
wherein the second camera having the higher picture definition is continuously connected to the shared line at a time of operation of the first camera.

6 more elements

A circuit device for preventing radiation emission in a portable terminal with two cameras, the device comprising:

a first camera connected through a first 3-state buffer to a shared line comprising at least one of a shared clock line and a shared data line;
a second camera having a higher picture definition than a picture definition of the first camera and connected to the shared line with no buffer therebetween;
a processor for outputting a first control signal controlling an operation of the first camera and of the first 3-state buffer through a first terminal and a second control signal controlling an operation of the second camera through a second terminal;
the shared line between the first 3 state buffer and the processor;
the first 3-state buffer, electrically connected on a first electrical path between the first camera and the shared line, for receiving the first control signal and connecting or disconnecting between the first camera and the shared line depending on the received first control signal;
and
an impedance device electrically connected on a second electrical path between the first camera and the processor,
wherein the first control signal and the second control signal have different values,
wherein the first 3-state buffer disconnects only the first camera from the shared line at a time of operation of the second camera having the higher picture definition, and
wherein the second camera having the higher picture definition is continuously connected to the shared line at a time of operation of the first camera.

7 more elements

Dependencies are inferred from the claim text.

Description2,320 words

Summary750 words

#This application claims the benefit under 35 U.S.C. §119(a) of a Korean patent application filed in the Korean Intellectual Property Office on Jan. 22, 2010 and assigned Serial No. 10-2010-0005844, the entire disclosure of which is hereby incorporated by reference.

#1. Field of the Invention

#The present invention relates to a circuit device for preventing detrimental effects of radiation emission in a portable terminal with two cameras. More particularly, the present invention relates to a circuit device for preventing the radiation emission of a harmonic frequency of a first camera from affecting another camera.

Brief description of the drawings3 figures

#The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

#FIG. 1 is a diagram illustrating a portable terminal with two cameras according to the conventional art;

#FIG. 2 is a circuit diagram illustrating a circuit device of a portable terminal with two cameras according to an exemplary embodiment of the present invention; and

Detailed description1,467 words

#Throughout the drawings, like reference numerals will be understood to refer to like parts, components and structures.

#The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

#The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Facts

Application

12/984,896Filed 5 Jan 2011

Priority

KR 10-2010-000584422 Jan 2010

Published

US 2011/0181761 A128 Jul 2011

Granted

29 Apr 2014

Term ends

12 Mar 2031

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 66 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification7 codes

H04N 23/81
Camera processing pipelines; Components thereof: for suppressing or minimising disturbance in the image signal generation
H04N 23/45
Cameras or camera modules comprising electronic image sensors; Control thereof: for generating image signals from two or more image sensors being…
H04N 23/60
Cameras or camera modules comprising electronic image sensors; Control thereof: control of cameras or camera modules
H04N 25/617
Noise processing, e.g. detecting, correcting, reducing or removing noise: for reducing electromagnetic interference, e.g. clocking noise

Timeline

22 Jan 2010Priority claimedKR 10-2010-0005844
5 Jan 2011Application filedUS 12/984,896
5 Jan 2011Assigned to Samsung Electronics Co., Ltd.assignment of assignor's interest
28 Jul 2011PublishedUS 2011/0181761 A1
29 Apr 2014GrantedUS 8,711,237 B2
12 Oct 2026TodayWithin its term
12 Mar 2031Term endsEstimated, includes 66 days of adjustment

Circuit device for preventing radiation emission in portable terminal with two cameras

Life of this patent

Circuit device for preventing radiation emission in portable terminal with two cameras

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims16

Description2,320 words

Drawings

Classification7 codes

Life of this patent

Description2,320 words