John H Ko

US Patent:

7656132, Feb 2, 2010

Filed:

Nov 14, 2006

Appl. No.:

11/559790

Inventors:

John Sung Ko So - Fremont CA, US
David Alan Brown - San Jose CA, US

Assignee:

Advanced Analogic Technologies, Inc. - Santa Clara CA

International Classification:

H02J 7/06
H02J 7/24

US Classification:

320164, 320134

Abstract:

A battery charger apparatus for charging a battery, comprises a charge-current control circuit for receiving a charge-current control signal to control an amount of charge current being drawn from an input source, e. g. , a USB port or a line adapter; an analog control circuit for generating an analog control signal representative of a maximum amount of charge current to be used to charge a battery; a digital charge reduction loop including a circuit for determining a charge-current adjustment signal based on a source voltage of the input source; a counter for generating a digital count value based on the charge-current adjustment signal; and a digital-to-analog converter (DAC) for generating a DAC control signal based on the digital count value of the counter, the DAC control signal being representative of a reduced amount of charge current to be used to charge the battery; and a switching mechanism for selecting one of the analog control signal or the DAC control signal based on the source voltage, the selected control signal being used as the charge-current control signal to the charge-current control circuit.

US Patent:

7923972, Apr 12, 2011

Filed:

Dec 4, 2009

Appl. No.:

12/631768

Inventors:

John Sung Ko So - Fremont CA, US
David Alan Brown - San Jose CA, US

Assignee:

Advanced Analogic Technologies, Inc. - Santa Clara CA

International Classification:

H02J 7/06
H02J 7/24

US Classification:

320164, 320134

Abstract:

Exemplary systems and methods for charging a battery with a digital charge reduction loop are described herein. In some embodiments, a system comprises an exemplary digital charge reduction loop which comprises a circuit for determining a charge-current adjustment signal, a counter for generating a digital count value, and a digital-to-analog converter. The circuit for determining a charge-current adjustment signal may base the determination on a source voltage of an input source. The counter may generate a digital count value based on the charge-current adjustment signal. The digital-to-analog converter (DAC) may generate a DAC control signal based on the digital count value of the counter, the DAC control signal being representative of an amount of charge current to be used to charge a battery.

US Patent:

20130204906, Aug 8, 2013

Filed:

Jul 18, 2012

Appl. No.:

13/552518

Inventors:

JOHN DAO-MING KO - Livermore CA, US
MICHAEL F. BRUNO - Woburn MA, US
PAUL ALAN RILEY - Ashburn VA, US

Assignee:

salesforce.com,inc. - San Francisco CA

International Classification:

G06F 17/30

US Classification:

707803, 707E17005

Abstract:

In accordance with embodiments, there are provided mechanisms and methods for facilitating dynamic management of assets in an on-demand services environment. In one embodiment and by way of example, a method includes receiving, in real-time, a request for performance of one or more tasks relating to management of assets. The management of assets may include management of data relating to the assets, where the assets may include hardware assets or software assets, wherein the request is received at a first computing system. The method may further include performing, in real-time, the one or more tasks. The one or more tasks may include dynamically customizing, according to the request, data relating to the assets.