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Ho-Hyun
Ho-Hyun Hwang, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20080240786 | OPTICAL UNIT, IMAGE FORMING APPARATUS INCLUDING THE SAME AND OPTICAL ELEMENT THEREOF - An optical unit includes an optical element having a first combining surface and a second combining surface that applied an adhesive that is cured when exposed to a curing light respectively and that have different transmittance of the curing light; and a mount member combined with the optical element by the adhesive. The adhesive is cured when exposed to the curing light. | 10-02-2008 |
| 20090316244 | LIGHT SCANNING UNIT AND IMAGE FORMING APPARATUS COMPRISING THE SAME - A light scanning unit comprises: a light source unit for emitting first and second light; a beam deflector for deflecting the first and second light emitted from the light source unit; and a synchronization detection optical system. The synchronization detection optical system includes synchronization detection sensors for detecting scanning synchronization of the first and second light and synchronization optical path converting members for converting optical paths of portions of the first and second light deflected by the beam deflector. The optical paths of the portions of the first and second light are directed to come into close proximity with one another. The light scanning unit may be incorporated in an image forming apparatus. | 12-24-2009 |
| 20110050833 | Image forming apparatus - An image forming apparatus including a black developer with increased capacity. The image forming apparatus includes optical scanners, where the optical scanners have the same focusing distance from the light source to the photo conductor, and the light reflecting unit of one of the optical scanners is arranged at a position different from the light reflecting unit of another optical scanner, such that intervals between the developers vary. Accordingly, although developers of the same type are used, the capacity of the black developer, which is most frequently used, may be easily increased by arranging the relative positions of the developers. | 03-03-2011 |
Ho-Hyun Park, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090217331 | EFFICIENT NVOD SERVICE METHOD FOR VARIOUS CLIENT ENVIRONMENTS AND APPARATUS THERE-FOR - An efficient near video on demand (NVOD) service for various client environments is provided. The NVOD service method for transmitting video data including moving pictures to a plurality of clients in a network includes identifying a relative network bandwidth “m” of a client with respect to a video playout bandwidth, dividing the video data into data segments having different sizes according to the relative network bandwidth “m” and transmitting the data segments to the client through a plurality of channels. | 08-27-2009 |
Ho-Hyun Song, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100130348 | PHOTOCATALYTIC COMPOSITION FOR ANTI-REFLECTION AND THE GLASS SUBSTRATE COATED WITH THE COMPOSITION - Disclosed herein is an antireflective photocatalyst composition including a titanium dioxide-based photocatalyst, a binder, water, and alcohol, and a substrate using the composition. The antireflective photocatalyst composition is advantageous in that, when it is applied to a glass substrate, such as a glass antireflective film for a solar cell or a glass illuminator, it can prevent incident light energy from scattering and improve optical transmissivity, and in that it decomposes pollutants due to the dual action of harmful gas decomposition and self-purification, which are specific characteristics of a photocatalyst. | 05-27-2010 |