Kevin Tseng

US Patent:

6600594, Jul 29, 2003

Filed:

Feb 21, 2002

Appl. No.:

10/081765

Inventors:

Jimmy Ko - San Leandro CA
Kevin Tseng - San Leandro CA

Assignee:

Lightech Fiberoptics, Inc. - San Leandro CA

International Classification:

H01S 300

US Classification:

359337, 35933713, 359161

Abstract:

A variable optical attenuation system has at least one variable optical attenuation device that receives a light signal, attenuates the light signal, and transmits an attenuated light signal. The variable optical attenuator system further has a controller circuit in communication with the variable optical attenuation device to provide an attenuation control signal to the variable optical attenuation device to cause the variable optical attenuation device to adjust an attenuation factor of the variable optical attenuation device. The variable optical attenuator system also has a data retaining device such as an EEPROM in communication with the controller circuit. The data retaining device has a listing of attenuation factors and corresponding attenuation control signals. A communication interface such as a serial data link, within the variable optical attenuator system provides communication between the controller circuit and an external command system. The external command system indicates a desired attenuation factor and the control circuit accesses the data retaining device to retrieve the corresponding attenuation control signal.

US Patent:

7422454, Sep 9, 2008

Filed:

Mar 20, 2007

Appl. No.:

11/688845

Inventors:

Choon Tak Tang - Irvine CA, US
Jason Chen - Walnut CA, US
Kevin Tseng - Baldwin Park CA, US

Assignee:

Kingston Technology Corporation - Fountain Valley CA

International Classification:

H01R 13/60
H01R 13/44

US Classification:

439131

Abstract:

A retractable memory drive in accordance with the present invention comprises a top casing, a middle carrier, an electronic device such as a USB thumb drive, and a bottom casing. A positioning device on the middle carrier has a portion that protrudes outside the casing and operates like a button. The location of the positioning device where the button is located has two key attributes. First, there is a protrusion that acts as a lock with the casing. Second, the area below the button is not rigid and so it gives way when pressure is applied to the button. The top and bottom casings provide a casing structure which includes two detents. One detent is for locking the device with the connector in the extended position, and one detent for locking the device with the connector retracted in the in position. This allows for just one press of the extended portion of the positioning device to unlock it from its present position. When the device reaches its new position it will automatically lock.

US Patent:

7661967, Feb 16, 2010

Filed:

Sep 5, 2008

Appl. No.:

12/205620

Inventors:

Choon Tak Tang - Irvine CA, US
Jason Chen - Walnut CA, US
Kevin Tseng - Baldwin Park CA, US

Assignee:

Kingston Technology Corporation - Fountain Valley CA

International Classification:

H01R 13/60
H01R 13/44

US Classification:

439131

Abstract:

A retractable memory drive in accordance with the present invention comprises a top casing, a middle carrier, an electronic device such as a USB thumb drive, and a bottom casing. A positioning device on the middle carrier has a portion that protrudes outside the casing and operates like a button. The location of the positioning device where the button is located has two key attributes. First, there is a protrusion that acts as a lock with the casing. Second, the area below the button is not rigid and so it gives way when pressure is applied to the button. The top and bottom casings provide a casing structure which includes two detents. One detent is for locking the device with the connector in the extended position, and one detent for locking the device with the connector retracted in the in position. This allows for just one press of the extended portion of the positioning device to unlock it from its present position. When the device reaches its new position it will automatically lock.