Patents by Inventor Young-min Chae
Young-min Chae 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: 9201362Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: GrantFiled: October 12, 2012Date of Patent: December 1, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-min Chae, Jin-ha Kim
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Patent number: 9167299Abstract: A method for managing a broadcast receiving apparatus standby mode according to external signaling is provided. The method includes: generating a power management descriptor that a broadcast receiving apparatus refers to in order to perform a standby mode; and transmitting the generated power management descriptor to the broadcast receiving apparatus. Accordingly, since the broadcast receiving apparatus manages the standby mode more effectively, standby power consumed in the standby mode is further reduced and thus power saving effect can be achieved.Type: GrantFiled: August 26, 2011Date of Patent: October 20, 2015Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTEInventors: Jung Mee Yun, Sang Hak Lee, Jang Kyu Lee, Jong Chul Weon, Young Min Chae, Jeong Ku Lee
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Publication number: 20140286654Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: ApplicationFiled: October 12, 2012Publication date: September 25, 2014Applicant: Samsung Electronics Co., LtdInventors: Young-min CHAE, Jin-ha Kim
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Publication number: 20140105624Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: Samsung Electronics Co., LtdInventors: Young-min CHAE, Jin-ha Kim
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Publication number: 20140047495Abstract: A method for managing a broadcast receiving apparatus standby mode according to external signaling is provided. The method includes: generating a power management descriptor that a broadcast receiving apparatus refers to in order to perform a standby mode; and transmitting the generated power management descriptor to the broadcast receiving apparatus. Accordingly, since the broadcast receiving apparatus manages the standby mode more effectively, standby power consumed in the standby mode is further reduced and thus power saving effect can be achieved.Type: ApplicationFiled: August 26, 2011Publication date: February 13, 2014Inventors: Jung Mee Yun, Sang Hak Lee, Jang Kyu Lee, Jong Chul Weon, Young Min Chae, Jeong Ku Lee
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Publication number: 20130330098Abstract: A power control method and apparatus to heat a heating roller includes heating a heating roller provided to fix a toner image of print data in an image forming apparatus, the heating roller having a heating resistor to receive roller power. The power control method includes gradually increasing a maximum level of a source power supplied from an external source up to a specific maximum supply level, and supplying the maximum source power to the heating resistor as the roller power while gradually increasing the maximum level of the source power up to a specific maximum supply level, measuring a surface temperature of the heating roller, and supplying the source power of which maximum level is equal to the maximum supply level to the heating resistor as the roller power until the measured surface temperature reaches a specific fixing target temperature, and fixing the toner image onto a printing medium.Type: ApplicationFiled: August 13, 2013Publication date: December 12, 2013Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Young-min CHAE, Sang-yong HAN, Joong-gi KWON, Se-joong KIM, Jun-seok CHO
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Patent number: 8532517Abstract: A power control apparatus and an image forming apparatus include a non-heating control unit to control non-heating control components according to a power-on signal, and a heating control unit to increase a level of a source power supplied as roller power and to supply the increased level of the roller power to a heating roller according to phases of current of the source power such that heating the roller reaches a temperature before a power-on process of the non-heating control unit is completed.Type: GrantFiled: April 24, 2012Date of Patent: September 10, 2013Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Young-min Chae, Sang-yong Han, Joong-gi Kwon, Se-joong Kim, Jun-seok Cho
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Patent number: 8521051Abstract: A method and an apparatus to control power supplied to a heating roller and a phase control circuit corresponding to the method or the apparatus. The phase control circuit may include an examination unit to compare levels of a sine wave having a predetermined first period and a switching signal to increase and decrease repeatedly according to a predetermined second period, and a phase control signal generation unit to generate a phase control signal having a non-zero in intervals of time sections including a time when levels of the switching signal and the sine wave which is in a decreasing section are equal to each other during a time period when the level of the sine wave is zero, and a time when levels of the switching signal and the sine wave which is in an increasing section are equal to each other during a time period when the level of the sine wave is zero.Type: GrantFiled: February 28, 2012Date of Patent: August 27, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kwon Na, Young-min Chae
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Publication number: 20130156456Abstract: A method and an apparatus to control power supplied to a heating roller and a phase control circuit corresponding to the method or the apparatus. The phase control circuit may include an examination unit to compare levels of a sine wave having a predetermined first period and a switching signal to increase and decrease repeatedly according to a predetermined second period, and a phase control signal generation unit to generate a phase control signal having a non-zero in intervals of time sections including a time when levels of the switching signal and the sine wave which is in a decreasing section are equal to each other during a time period when the level of the sine wave is zero, and a time when levels of the switching signal and the sine wave which is in an increasing section are equal to each other during a time period when the level of the sine wave is zero.Type: ApplicationFiled: February 28, 2012Publication date: June 20, 2013Applicant: Samsung Electronics Co., LtdInventors: Tae-kwon NA, Young-min CHAE
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Patent number: 8311424Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: GrantFiled: June 30, 2011Date of Patent: November 13, 2012Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Young-min Chae, Jin-ha Kim
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Publication number: 20120207503Abstract: A power control method and apparatus to heat a heating roller includes heating a heating roller provided to fix a toner image of print data in an image forming apparatus, the heating roller having a heating resistor to receive roller power. The power control method includes gradually increasing a maximum level of a source power supplied from an external source up to a specific maximum supply level, and supplying the maximum source power to the heating resistor as the roller power while gradually increasing the maximum level of the source power up to a specific maximum supply level, measuring a surface temperature of the heating roller, and supplying the source power of which maximum level is equal to the maximum supply level to the heating resistor as the roller power until the measured surface temperature reaches a specific fixing target temperature, and fixing the toner image onto a printing medium.Type: ApplicationFiled: April 24, 2012Publication date: August 16, 2012Applicant: Samsung Electronic Co., Ltd.Inventors: Young-min CHAE, Sang-yong Han, Joong-gi Kwon, Se-Joong Kim, Jun-seok Cho
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Patent number: 8180241Abstract: An image forming apparatus includes a power supply unit that controls a level of electrical power supplied to the heating lamp during a warm-up of the heating unit that involves at least a first warm-up stage. During the first warm-up stage, when power begins to be supplied to the heating lamp, the power supply unit gradually increases a level of power supplied to the heating lamp from zero to a defined supply level according to a phase control of an alternating current (AC) of the source power. If a second warm-up stage is included, during the second warm-up stage, the power supply unit may maintain the level of power supplied to the heating lamp at the defined supply level until the measured surface temperature of the heating unit has reached a defined target temperature.Type: GrantFiled: July 1, 2011Date of Patent: May 15, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Chae, Sang-yong Han, Joong-gi Kwon, Se-joong Kim, Jun-seok Cho
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Patent number: 8150288Abstract: A method and an apparatus to control power supplied to a heating roller and a phase control circuit corresponding to the method or the apparatus. The phase control circuit may include an examination unit to compare levels of a sine wave having a predetermined first period and a switching signal to increase and decrease repeatedly according to a predetermined second period, and a phase control signal generation unit to generate a phase control signal having a non-zero in intervals of time sections including a time when levels of the switching signal and the sine wave which is in a decreasing section are equal to each other during a time period when the level of the sine wave is zero, and a time when levels of the switching signal and the sine wave which is in an increasing section are equal to each other during a time period when the level of the sine wave is zero.Type: GrantFiled: December 27, 2010Date of Patent: April 3, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kwon Na, Young-min Chae
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Patent number: 8050584Abstract: A power control apparatus includes a heating roller provided to fix a toner image of print data in an image forming apparatus, the heating roller having a heating resistor to receive roller power. A maximum level of a source power supplied from an external source is gradually increased up to a specific maximum supply level and the maximum source power to the heating resistor is supplied as the roller power while gradually increasing the maximum level of the source power up to a specific maximum supply level. A surface temperature of the heating roller is measured, and the source power of which maximum level is equal to the maximum supply level is supplied to the heating resistor as the roller power until the measured surface temperature reaches a specific fixing target temperature, and the toner image is fixed onto a fed printing medium.Type: GrantFiled: September 24, 2010Date of Patent: November 1, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Chae, Sang-yong Han, Joong-gi Kwon, Se-joong Kim, Jun-seok Cho
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Publication number: 20110262169Abstract: A power control method and apparatus to heat a heating roller includes heating a heating roller provided to fix a toner image of print data in an image forming apparatus, the heating roller having a heating resistor to receive roller power. The power control method includes gradually increasing a maximum level of a source power supplied from an external source up to a specific maximum supply level, and supplying the maximum source power to the heating resistor as the roller power while gradually increasing the maximum level of the source power up to a specific maximum supply level, measuring a surface temperature of the heating roller, and supplying the source power of which maximum level is equal to the maximum supply level to the heating resistor as the roller power until the measured surface temperature reaches a specific fixing target temperature, and fixing the toner image onto a printing medium.Type: ApplicationFiled: July 1, 2011Publication date: October 27, 2011Applicant: Samsung Electronics Co., LtdInventors: Young-min CHAE, Sang-yong Han, Joong-gi Kwon, Se-Joong Kim, Jun-seok Cho
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Patent number: 8045878Abstract: A device for fusing a predetermined toner image on a paper and which electrically insulates a heating body of a fusing unit from a power supply unit by heating the heating body using an induced current generated by a transformer. The fusing device includes an insulation unit for generating an induced current in response to an alternating current, a heating body heated by the generated induced current, a toner fusing unit which fuses the toner image on the paper using the heat received from the heating body, and a tube-expansion adhesion portion closely adhering the heating body to the toner fusing unit using a predetermined tube-expansion pressure.Type: GrantFiled: June 7, 2010Date of Patent: October 25, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Chae, Sang-yong Han, Joong-gi Kwon, Hwan-guem Kim, Durk-hyun Cho
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Publication number: 20110255894Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: ApplicationFiled: June 30, 2011Publication date: October 20, 2011Applicant: Samsung Electronics Co., LtdInventors: Young-min CHAE, Jin-ha Kim
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Patent number: 8032045Abstract: A device for fusing and fixing a transferred toner of a predetermined image onto a print paper is provided. In particular, a fusing device which can instantly control induced current provided to a fusing unit in an image printing apparatus which heats the fusing unit using the induced current is provided. The fusing device includes a fusing unit which is resistance heated or induction heated by an induced current, and fuses the toner onto the print paper using the generated heat. A sensing unit senses the temperature of the fusing unit. A reference current generating unit generates a predetermined reference current to heat the fusing unit to reach a predetermined temperature based on the temperature of the sensed fusing unit and the reference temperature. A pulse width modulation signal generating unit generates a pulse width modulation signal for generating the induced current so that the induced current corresponding to the reference current is supplied to the fusing unit.Type: GrantFiled: December 14, 2005Date of Patent: October 4, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Chae, Sang-yong Han, Hwan-guem Kim, Durk-hyun Cho, Su-Kyoung Chae
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Patent number: 8027601Abstract: An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric power such that the heater heats the fixing roller according to the AC electric power; a unit interposed between the heater and the AC power source to selectively supply the AC electric power from the AC power source to the heater so as to control the heater to heat the fixing roller; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the unit and a relay coil to open and close the first relay contact point; the relay selectively supplying the AC electric power from AC power source to the heater and the power control switch; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed on a DC power supply line between the DC power supplier and the relay coil to control the supply of the AC electric power frType: GrantFiled: August 28, 2009Date of Patent: September 27, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Young-min Chae, Jin-ha Kim
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Patent number: 8000619Abstract: A fixing device usable with an image forming apparatus having a fixing roller to fix a toner on a recording medium, a heater to heat the fixing roller, and an alternating current (AC) power source to supply an AC electric power to the heater may include a power converting part to convert the AC electric power of the AC power source and to supply the converted power to the heater; a relay including a first relay contact point disposed on a first AC power supply line between the AC power source and the power converting part and a relay coil to open and close the first relay contact point, the relay selectively supplying the AC electric power from the AC power source to the heater and the power converting part; a direct current (DC) power supplier to supply a DC power to the relay coil; and a thermoswitch interposed between the relay coil and the DC power supplier and mounted adjacent to the fixing roller so as to interrupt the DC power from the DC power supplier to the relay coil, when a temperature of the fixiType: GrantFiled: August 28, 2009Date of Patent: August 16, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-min Chae, Jin-ha Kim