Tim Ping Yu

US Patent:

7844632, Nov 30, 2010

Filed:

Jul 13, 2007

Appl. No.:

11/777484

Inventors:

Kongyi Zhou - Fremont CA, US
K. Karun - Sammamish WA, US
Jinyu Wang - Austin TX, US
Tim Yu - Cupertino CA, US

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 7/00

US Classification:

707796, 707803

Abstract:

Techniques for implementing a scalable DOM and a pluggable DOM are provided. A scalable DOM implementation manages a DOM tree in memory to free unreferenced nodes, avoid generating nodes unnecessarily, and avoid storing multiple versions of the same data on disk. A pluggable DOM implementation includes an abstract interface that is defined between the API layer and the data layer of a DOM implementation. An implementation of the abstract interface is defined for each data source that is plugged in to the pluggable DOM implementation and that stores XML data in a different format.

US Patent:

8156494, Apr 10, 2012

Filed:

Jul 13, 2007

Appl. No.:

11/777499

Inventors:

Kongyi Zhou - Fremont CA, US
K. Karun - Sammamish WA, US
Jinyu Wang - Austin TX, US
Tim Yu - Cupertino CA, US

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 9/46
G06F 3/00

US Classification:

718100, 719328, 715239, 707802, 707809, 707756, 707975

Abstract:

Techniques for implementing a scalable DOM and a pluggable DOM are provided. A scalable DOM implementation manages a DOM tree in memory to free unreferenced nodes, avoid generating nodes unnecessarily, and avoid storing multiple versions of the same data on disk. A pluggable DOM implementation includes an abstract interface that is defined between the API layer and the data layer of a DOM implementation. An implementation of the abstract interface is defined for each data source that is plugged in to the pluggable DOM implementation and that stores XML data in a different format.

US Patent:

20060152206, Jul 13, 2006

Filed:

Dec 23, 2004

Appl. No.:

11/021855

Inventors:

Tim Yu - Fremont CA, US

International Classification:

G05F 3/16
G05F 3/20

US Classification:

323313000

Abstract:

A bandgap reference circuit includes two diode-connected transistors and an operational amplifier. The operational amplifier is connected in a feedback arrangement so that the current passing through transistor is substantially the same. This means that the current density in each transistor differs. The output of the operational amplifier is a function of the base emitter voltages of the two transistors and is substantially temperature invariant. Each transistor has a supplemental capacitor connected between its collector and emitter. The capacitors are substantially equal in size and both are substantially larger than the parasitic capacitance of either transistor. As a result, the overall capacitance of each transistor is substantially the same giving the reference circuit a favorable power supply rejection ratio.

US Patent:

20070236191, Oct 11, 2007

Filed:

Apr 11, 2006

Appl. No.:

11/279375

Inventors:

Tim Yu - Fremont CA, US
Lu Chen - San Jose CA, US

Assignee:

Advanced Analogic Technologies, Inc. - Sunnyvale CA

International Classification:

G05F 1/00

US Classification:

323282000

Abstract:

A boost regulator includes a diode D connected between a node Vand an output node V. The node Vis connected to ground by a first switch MA second switch Mand an inductor L are connected in series between the node Vand an input node V. The regulator has an enabled state and a disabled state. In the enabled stage, a control circuit turns the second switch on and drives the first switch using a PFM, PWM or other strategy. In the disabled state, control circuit turns the second switch off to prevent current passing through the regulator to the load.