Patents by Inventor Kyoung-Youm Kim
Kyoung-Youm Kim 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).
-
Patent number: 8116851Abstract: Disclosed is a living body measurement apparatus including: a first light source placed on the surface of the skin in a living body and radiating a first light in a visible light wavelength range onto the surface of the skin; a second light source placed on the surface of the skin and radiating a second light in a near-infrared wavelength range onto the surface of the skin; an optical detector placed on the surface of the skin at a predetermined distance from the first and second light sources to detect, as an electric signal, first or second detection light penetrating up through the skin and inputted thereto among the radiated first or second light; and a controller for sequentially driving the first and second light sources.Type: GrantFiled: April 18, 2007Date of Patent: February 14, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Geol Cho, Kyoung-Youm Kim, In-Duk Hwang, Kun-Kook Park
-
Patent number: 7834854Abstract: A keypad backlighting device includes a light source having an emission chip and a fluorescent material applied to the emission chip. The emission chip and the fluorescent material interact with each other and generate white light. The light source can realize white light by means of interaction between the emission chip and the fluorescent material applied thereto. This improves the reproduction properties of the backlight color of the keypad. In addition, the device has an elastic pad configured for guiding light from the light source to key tops attached to the pad. This reduces the number of light sources and saves on the cost of manufacturing.Type: GrantFiled: September 12, 2006Date of Patent: November 16, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Kyoung-Youm Kim
-
Patent number: 7635819Abstract: A keypad assembly includes a light guide plate adapted to transmit light and comprising a supporting portion and an elastic portion made of different material than material of the supporting portion, at least one key button disposed on the side of the light guide plate where a first surface of the light guide plate is located, and at least one reflection pattern locally formed on the light guide plate and adapted to reflect light transmitted into the light guide plate toward the key button. The elastic portion is disposed below the key button.Type: GrantFiled: December 28, 2005Date of Patent: December 22, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim
-
Patent number: 7601926Abstract: A keypad having a phosphor is disclosed. The keypad includes a light guide panel, the interior of which ultraviolet light propagates through; and at least one key top disposed on top of the light guide panel including a phosphor to absorb the ultraviolet light passing out through the light guide panel and emit visible light.Type: GrantFiled: September 8, 2006Date of Patent: October 13, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-Youm Kim, Joo-Hoon Lee
-
Patent number: 7589292Abstract: Disclosed is a keypad which can realize uniform and bright illumination, small power consumption and low manufacturing cost. The keypad includes a light guide layer through which light travels, at least one key button disposed on an upper surface of the light guide layer, a lower elastic layer disposed on a lower surface of the light guide layer, located opposite the upper surface, and at least one reflective pattern formed on the light guide layer and partially reflecting light traveling through the light guide layer toward the key button.Type: GrantFiled: December 21, 2007Date of Patent: September 15, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Sun-Tae Jung, Joo-Hoon Lee, Kyoung-Youm Kim
-
Patent number: 7462794Abstract: A keypad includes a light guide panel, the interior of which light propagates through; at least one key button positioned on the upper surface of the light guide panel; and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: GrantFiled: June 18, 2007Date of Patent: December 9, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Patent number: 7446275Abstract: A keypad includes a light guide panel, the interior of which light propagates through; at least one key button positioned on the upper surface of the light guide panel; and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: GrantFiled: June 18, 2007Date of Patent: November 4, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Patent number: 7411142Abstract: Disclosed is a keypad which can realize uniform and bright illumination, small power consumption and low manufacturing cost. The keypad includes a light guide layer through which light travels, at least one key button disposed on an upper surface of the light guide layer, a lower elastic layer disposed on a lower surface of the light guide layer, located opposite the upper surface, and at least one reflective pattern formed on the light guide layer and partially reflecting light traveling through the light guide layer toward the key button.Type: GrantFiled: March 3, 2006Date of Patent: August 12, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Sun-Tae Jung, Joo-Hoon Lee, Kyoung-Youm Kim
-
Publication number: 20080128254Abstract: Disclosed is a keypad which can realize uniform and bright illumination, small power consumption and low manufacturing cost. The keypad includes a light guide layer through which light travels, at least one key button disposed on an upper surface of the light guide layer, a lower elastic layer disposed on a lower surface of the light guide layer, located opposite the upper surface, and at least one reflective pattern formed on the light guide layer and partially reflecting light traveling through the light guide layer toward the key button.Type: ApplicationFiled: December 21, 2007Publication date: June 5, 2008Inventors: Sun-Tae Jung, Joo-Hoon Lee, Kyoung-Youm Kim
-
Patent number: 7378606Abstract: A keypad includes a light guide panel, the interior of which light propagates through, a film positioned on the upper surface of the light guide panel and having at least one key button positioned on the upper surface thereof, and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: GrantFiled: January 6, 2006Date of Patent: May 27, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Publication number: 20080039729Abstract: Disclosed is a living body measurement apparatus including: a first light source placed on the surface of the skin in a living body and radiating a first light in a visible light wavelength range onto the surface of the skin; a second light source placed on the surface of the skin and radiating a second light in a near-infrared wavelength range onto the surface of the skin; an optical detector placed on the surface of the skin at a predetermined distance from the first and second light sources to detect, as an electric signal, first or second detection light penetrating up through the skin and inputted thereto among the radiated first or second light; and a controller for sequentially driving the first and second light sources.Type: ApplicationFiled: April 18, 2007Publication date: February 14, 2008Inventors: Jae-Geol Cho, Kyoung-Youm Kim, In-Duk Hwang, Kun-Kook Park
-
Patent number: 7324727Abstract: A planar lightwave circuit having an optical filter, which comprises: a first waveguide; a second waveguide separated from the first waveguide, in which the width of a first cross-section opposite to the first waveguide is wider than that of a second cross-section of the other side; and a trench located between the first and second waveguides, in which the optical filter is positioned.Type: GrantFiled: November 16, 2005Date of Patent: January 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-Youm Kim, Jeong-Hwan Song, Se-Yoon Kim
-
Patent number: 7294803Abstract: A keypad includes a light guide panel, the interior of which light propagates through; at least one key button positioned on the upper surface of the light guide panel; and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: GrantFiled: December 15, 2005Date of Patent: November 13, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Publication number: 20070240972Abstract: A keypad includes a light guide panel, the interior of which light propagates through; at least one key button positioned on the upper surface of the light guide panel; and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: ApplicationFiled: June 18, 2007Publication date: October 18, 2007Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Publication number: 20070240973Abstract: A keypad includes a light guide panel, the interior of which light propagates through; at least one key button positioned on the upper surface of the light guide panel; and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: ApplicationFiled: June 18, 2007Publication date: October 18, 2007Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Patent number: 7257296Abstract: An optical waveguide element having a directional coupler is disclosed. The element includes a first and a second waveguide located adjacent to each other at a predetermined portion for mode coupling, a first dummy waveguide extending from an one end of the second waveguide, a reflector installed on an end surface of the first dummy waveguide, and a second dummy waveguide located adjacent to the first dummy waveguide at a predetermined portion for a mode coupling. The optical signals progressing from the second dummy waveguide to the first dummy waveguide disappear while sequentially passing through the reflector and the second dummy waveguide. In the optical waveguide element, optical signals passing through the first dummy waveguide gradually disappear while passing through the reflector and the second dummy waveguide, thereby improving a bi-directional cross-talk.Type: GrantFiled: October 23, 2003Date of Patent: August 14, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-Youm Kim, Sun-Tae Jung
-
Publication number: 20070175744Abstract: A keypad includes a light guide panel, the interior of which light propagates through, a film positioned on the upper surface of the light guide panel and having at least one key button positioned on the upper surface thereof, and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.Type: ApplicationFiled: March 30, 2007Publication date: August 2, 2007Inventors: Joo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
-
Patent number: 7215884Abstract: An optical demultiplexer having at least one Bragg diffraction grating for minimizing crosstalk on the sides of transmitting and receiving optical signals, as well as an optical communication module using the optical demultiplexer. The optical demultiplexer has first and second waveguides arranged adjacent each other in a predetermined section in order to perform mode coupling, so that the optical signals input through one end of the first waveguide are transmitted to a light receiving element through the second waveguide, and in which output light waves inputted through the other end of the first waveguide are output through the one end of the first waveguide. A first Bragg diffraction grating is formed on the second waveguide and haa wavelength selectivity, for minimizing crosstalk by transmitting a reception wavelength of the optical signals at about 100% and by reflecting a wavelength of the output light waves at about 100%.Type: GrantFiled: December 23, 2003Date of Patent: May 8, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-Mo Koo, Se-Yoon Kim, Kyoung-Youm Kim
-
Publication number: 20070068783Abstract: A keypad having a phosphor is disclosed. The keypad includes a light guide panel, the interior of which ultraviolet light propagates through; and at least one key top disposed on top of the light guide panel including a phosphor to absorb the ultraviolet light passing out through the light guide panel and emit visible light.Type: ApplicationFiled: September 8, 2006Publication date: March 29, 2007Inventors: Kyoung-Youm Kim, Joo-Hoon Lee
-
Publication number: 20070070043Abstract: A keypad backlighting device includes a light source having an emission chip and a fluorescent material applied to the emission chip. The emission chip and the fluorescent material interact with each other and generate white light. The light source can realize white light by means of interaction between the emission chip and the fluorescent material applied thereto. This improves the reproduction properties of the backlight color of the keypad. In addition, the device has an elastic pad configured for guiding light from the light source to key tops attached to the pad. This reduces the number of light sources and saves on the cost of manufacturing.Type: ApplicationFiled: September 12, 2006Publication date: March 29, 2007Inventor: Kyoung-Youm Kim