Patents by Inventor Seung-je Joh
Seung-je Joh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9001394Abstract: An image scanning apparatus and method are provided. The image scanning apparatus scans an image of a document and converts the scanned image into digital data, and includes light sources that emit light. The apparatus includes a light guide unit that diffuses the light emitted by the light sources and a sensor unit that senses image data from the document by recognizing light reflected from the document by being diffused by the light guide unit. The apparatus includes a control unit that controls the turning on of the light sources. The control unit alternately turns on or off the light sources such that at least one of the light sources is turned on when at least one other light source is turned off.Type: GrantFiled: April 23, 2012Date of Patent: April 7, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-je Joh, Sun-hee Lee
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Patent number: 8976427Abstract: An image forming apparatus and a method of controlling the same are provided. The image forming apparatus includes a document feeder to feed an original document, a time delay integration image sensor to scan the original document and read image data, and a controller to activate a time delay integration function of the time delay integration image sensor when a direction for feed of the original document corresponds to a sub-scanning direction of the time delay integration image sensor, and to deactivate the time delay integration function of the time delay integration image sensor when the direction for feed of the original document does not correspond to the sub-scanning direction of the time delay integration image sensor, during reading of the original document.Type: GrantFiled: June 18, 2013Date of Patent: March 10, 2015Assignee: Samsung Electronics Co., Ltd.Inventor: Seung Je Joh
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Patent number: 8804207Abstract: An image reading apparatus which supports a both-side scan mode and a controlling method thereof. The image reading apparatus includes: an automatic paper transfer unit which automatically transfers a papers; a first scanning unit which comprises a first light source and scans a first side of the paper; a second scanning unit which comprises a second light source and scans a second side of the paper; and a controller which controls the first and second light sources to be alternately lit on a plurality of times within a cycle of a preset signal when the paper is transferred to the automatic paper transfer unit.Type: GrantFiled: September 23, 2011Date of Patent: August 12, 2014Assignee: Samsung Electronics Co., Ltd.Inventor: Seung-je Joh
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Publication number: 20130342879Abstract: An image forming apparatus and a method of controlling the same are provided. The image forming apparatus includes a document feeder to feed an original document, a time delay integration image sensor to scan the original document and read image data, and a controller to activate a time delay integration function of the time delay integration image sensor when a direction for feed of the original document corresponds to a sub-scanning direction of the time delay integration image sensor, and to deactivate the time delay integration function of the time delay integration image sensor when the direction for feed of the original document does not correspond to the sub-scanning direction of the time delay integration image sensor, during reading of the original document.Type: ApplicationFiled: June 18, 2013Publication date: December 26, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Seung Je JOH
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Publication number: 20130128322Abstract: An image scanning apparatus and method are provided. The image scanning apparatus scans an image of a document and converts the scanned image into digital data, and includes light sources that emit light. The apparatus includes a light guide unit that diffuses the light emitted by the light sources and a sensor unit that senses image data from the document by recognizing light reflected from the document by being diffused by the light guide unit. The apparatus includes a control unit that controls the turning on of the light sources. The control unit alternately turns on or off the light sources such that at least one of the light sources is turned on when at least one other light source is turned off.Type: ApplicationFiled: April 23, 2012Publication date: May 23, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung-je JOH, Sun-hee Lee
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Patent number: 8373913Abstract: An image scanning apparatus includes a light source unit having a plurality of lamps. A converter supplies power to the plurality of lamps and adjusts the power according to a desired light intensity of each the plurality of lamps. A controller controls the converter such that at least one of the lamps is overdriven for a predetermined amount of time when lamp warm-up is initiated. Thus, the length of time required to wait until an operational light intensity is reduced.Type: GrantFiled: May 14, 2008Date of Patent: February 12, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Seung-je Joh
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Publication number: 20120170083Abstract: An image reading apparatus which supports a both-side scan mode and a controlling method thereof. The image reading apparatus includes: an automatic paper transfer unit which automatically transfers a papers; a first scanning unit which comprises a first light source and scans a first side of the paper; a second scanning unit which comprises a second light source and scans a second side of the paper; and a controller which controls the first and second light sources to be alternately lit on a plurality of times within a cycle of a preset signal when the paper is transferred to the automatic paper transfer unit.Type: ApplicationFiled: September 23, 2011Publication date: July 5, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Seung-je Joh
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Publication number: 20090002776Abstract: An image scanning apparatus includes a light source unit having a plurality of lamps. A converter supplies power to the plurality of lamps and adjusts the power according to a desired light intensity of each the plurality of lamps. A controller controls the converter such that at least one of the lamps is overdriven for a predetermined amount of time when lamp warm-up is initiated. Thus, the length of time required to wait until an operational light intensity is reduced.Type: ApplicationFiled: May 14, 2008Publication date: January 1, 2009Applicant: Samsung Electronics Co., LtdInventor: Seung-je JOH
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Publication number: 20080038003Abstract: An apparatus and method of supplying driving signals to an image sensor are provided. The apparatus includes a driving signal generator generating two driving signals at one of a plurality of rates, a filtering unit filtering the driving signals in response to the plurality of rates, and a selector selecting the filtering result corresponding to the rate of the driving signals from the plurality of filtering results. Accordingly, the image sensor can stable operate even when the driving signals are applied to the image sensor at various rates.Type: ApplicationFiled: December 11, 2006Publication date: February 14, 2008Inventor: Seung-Je Joh
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Publication number: 20070146821Abstract: An image reading apparatus, comprising an image reading module having an image sensor to read an image from a document and a timing generator to generate a driving clock to control the image sensor, a main controller to output an enabling clock to the timing generator, and an analog-to-digital (A/D) converter to convert an analog signal output from the image sensor into a digital signal.Type: ApplicationFiled: November 28, 2006Publication date: June 28, 2007Applicant: Samsung Electronics Co., Ltd.Inventor: Seung-je Joh