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Chao-Hung
Chao-Hung Chang, Taipei TW
| Patent application number | Description | Published |
|---|---|---|
| 20110157407 | DOCUMENT CAMERA WITH SIZE-ESTIMATING FUNCTION AND SIZE ESTIMATION METHOD - A size estimation method is used with a document camera to estimate an object size. The document camera includes a lens and an image sensor. The size estimation method includes the following steps. Firstly, an object distance between the lens and the object is detected. According to the object distance and a viewable angle of the lens, a shooting zone size is estimated. Then, the object is shot by the lens and the image sensor, thereby acquiring a digital image including an image of the object. Then, an effective pixel number corresponding to the object image is counted. Afterward, the size of the object is estimated according to the effective pixel number, a total pixel number of the image sensor and the shooting zone size. | 06-30-2011 |
Chao-Hung Chang, Gilroy, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120086476 | Fast and accurate current driver with zero standby current and features for boost and temperature compensation for MRAM write circuit - Systems and methods for realizing current drivers without current or voltage feedback for devices that require accurate current drive with zero standby current has been disclosed. In a preferred embodiment of the invention this current driver is applied for write circuits for MRAMs. A fast and accurate reference current is generated by diode voltage divided by resistor without any feedback. The diode current is not fed back from the reference current. The diode current is generated from a regulated voltage. Temperature compensation of the write current is inherently built in the diode current reference. Fine-tuning of the temperature coefficient is achieved by mixing poly and diffusion resistors. A switch inserted in the current driver can turn on the driver fast and without a need for standby current. Leading boost in the current driver can fast charge the large coupling capacitance of word and bit lines and speed up write timing. | 04-12-2012 |
Chao-Hung Hsu, Taipei City TW
| Patent application number | Description | Published |
|---|---|---|
| 20100144019 | Photobioreactor - A photobioreactor used for microalgal culture consists a main body of bioreactor, a plurality of built-in light sources, a mechanical stirring apparatus and a pneumatic mixing device. The main body of the bioreactor is a hollow chamber and the plurality of built-in light sources connects the chamber from outside to inside for light distribution. The mechanical stirring apparatus is disposed in the chamber to generate liquid circulation. The pneumatic mixing system generates bubbles to suspend microalgae in the culture medium. | 06-10-2010 |
Chao-Hung Lin, Taipei County TW
| Patent application number | Description | Published |
|---|---|---|
| 20090293656 | ELECTRONIC DEVICE AND ASSEMBLY STRUCTURE THEREOF - An electronic device includes a housing having a lens assembly and a feeding device. The lens assembly is movable between a first reference position and a second reference position with respect to the housing. The feeding device is coupled to the lens assembly. When the lens assembly is in the first reference position, the lens assembly is engaged with the housing. When the lens assembly is moved to the second reference position from the first reference position by the feeding device, the lens assembly situated in the second reference position is rotatable and movable. | 12-03-2009 |
| 20100229732 | FORMING MACHINE FOR FORMING DOUGH INTO A SHEET - A forming machine includes a drum having an outer heating surface, a reservoir disposed below the drum and having a surrounding wall with a top edge that can contact the outer heating surface and that has a profile conforming to that of the outer heating surface, an applying disk disposed inside the reservoir and having perforations, and a rotary shaft extending into the reservoir to rotate the applying disk and movable upwardly or downwardly to raise or lower the applying disk. The reservoir is movable between non-contact and contact positions, where the top edge is spaced below and moves upward to abut against the outer heating surface, respectively. The applying disk is movable between pre-applying and applying positions, where the applying disk is lowered into the reservoir for dipping into the dough and is raised for applying the dough to the outer heating surface, respectively. | 09-16-2010 |
| 20110058315 | Extensible base pad module and electrical device with the same - An extensible base pad module and an electrical device with the same are disclosed. The electrical device has a base and an extensible base pad module. The base has an opening. The extensible base pad module has a push bar, a flange and a pad. The push bar is able to be levelly moved in the opening, and has a through hole thereon. The flange is disposed in the base, and has an arc-shaped rail of which two ends are respectively close and remote from the opening. One end of the pad is moveably provided in the arc-shaped rail, the other end is extensible in the through hole. | 03-10-2011 |
Chao-Hung Lin, Taipei City TW
| Patent application number | Description | Published |
|---|---|---|
| 20080272271 | Tooth mold retaining frame - A tooth mold retaining frame comprises an L shape seat; a pivotal block; a universal connector; a first positioning block; a second positioning block; and a first fine adjust unit. By using the first fine adjust unit, second fine adjust unit and the fine-adjust device, an upper teeth mold, and a lower teeth mold can move with respect to one another precisely. By a universal connector, the upper teeth mold can move three directionally and can lift or descend proportionally so as to avoid the error in manufacturing of the teeth mold. Thus the teeth mold can be made precisely and the condition of the teeth mold can be viewed conveniently. Furthermore, the teeth mold can be sent directly without needing to send the teeth frame. Thus, the manufacturer can make the teeth mold continuously without affecting the working time. | 11-06-2008 |
| 20090208895 | PLASTER DENTAL CAST GUM PLATE MOLDING MOLD - A plaster dental cast gum plate molding mold for molding a plaster dental cast gum plate having pins is disclosed. The body of the mold is made of an elastic material, having a cavity surrounded by a smoothly arched inner wall, a smoothly arched outer wall and a bottom wall, a plurality of insertion holes cut through the bottom wall for the insertion of a respective pin, and a plurality of alignment pegs respectively perpendicularly extending from the smoothly arched outer wall and suspending in the cavity so that the molded plaster cast gum plate has dents corresponding to the alignment pegs for quick recognition of the locations of the pins after positioning of the plaster cast gum plate on a base plate and bonding of a dental cast to the flat top surface of the plaster cast gum plate for enabling the dentist to cut one individual tooth model accurately. | 08-20-2009 |
Chao-Hung Wu, Taipei County TW
| Patent application number | Description | Published |
|---|---|---|
| 20100217818 | MESSAGE REPLY AND PERFORMANCE EVALUATION SYSTEM AND METHOD THEREOF - The present invention relates to a message reply and performance evaluation system, which are introduced into an electronic mail system. The message reply scheme has some control entries including a deadline for replying the message, an address for replying the message, and a field for verifying the reply. The performance evaluation scheme is provided for a sender performing evaluation corresponding to the replied message. As a sender transmits the message to a recipient, the email system of the sender will incorporate a message-to-reply field to the message. In addition, when the recipient receives the message, a reply field will be added to the email system after opening it. More, a reminder will be launched before the deadline. In particular, after receiving the reply, the sender may perform evaluation to the reply, and the evaluation will be recorded for future review. | 08-26-2010 |