Wayne W Lee

US Patent:

6823219, Nov 23, 2004

Filed:

May 16, 2001

Appl. No.:

09/855596

Inventors:

Wayne Y. Lee - Half Moon Bay CA
Dan Dan Yang - Los Altos CA

Assignee:

Dowslake Microsystems Corporation - Santa Clara CA

International Classification:

G05B 1101

US Classification:

700 19, 700 20, 700 59, 700 65, 3408554, 3408555, 3703956, 37039565, 398106, 398107, 398115

Abstract:

An architecture for use in controlling and managing optical functions and optical devices. A common microprocessor based control layer coordinates commands between optical devices and a user station. The control layer executes an operating system which handles data flow in the control layer. Generic commands from the user station causes the operating system to call specific subroutines the produce digital commands. These digital commands are then passed to a digital layer that interfaces with an analog layer. The analog layer is specifically developed to interface and work with a specific optical device. The analog layer thus directly controls the optical device including changing its settings based on input from the digital layer.

US Patent:

6856789, Feb 15, 2005

Filed:

Apr 2, 2002

Appl. No.:

10/115209

Inventors:

Ganesh Pattabiraman - Stanford CA, US
Wayne A. Lee - Los Altos CA, US
Thomas E. Wendoll - San Jose CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B007/00
H04B017/00

US Classification:

455 412, 455 69, 455 6711

Abstract:

Power levels for transmitting Bluetooth paging signals are optimized by applying mapping rules dictating different power levels for different signal quality characteristics measured during an earlier, pre-paging inquiry process. A subject Bluetooth device initially receives responses to universally addressed, blind inquiry signals previously broadcast by the subject Bluetooth device. In response, the subject Bluetooth device measures signal quality characteristics of each device's response. When a Bluetooth device to be paged is identified, the subject Bluetooth device applies the mapping rules to the measured signal quality characteristics for the identified device to select an appropriate power level for use in paging that Bluetooth device.

US Patent:

7427899, Sep 23, 2008

Filed:

Jan 6, 2006

Appl. No.:

11/326645

Inventors:

Wayne S. Lee - San Mateo CA, US

Assignee:

Matsushita Electric Industrial Co., Ltd. - Osaka

International Classification:

H03L 7/07
H03L 7/087

US Classification:

331 11, 331 16, 327156

Abstract:

This disclosure is directed to a communications device having a comparator that receives a signal associated with an output and produces a signal associated with a difference between a reference signal and the output signal. A loop filter is coupled to the comparator and accepts the difference signal. An oscillator is coupled to the loop filter and accepts the loop filter signal. It produces a signal with a frequency-characteristic in response. The oscillator can operate at a plurality of segments. A segment selection circuit is coupled to the oscillator. It determines which segment will be selected based upon a signal associated with an expected frequency characteristic, and outputs a signal associated with the particular segment. In response, the oscillator can then change its operational state to the particular segment. An amplification circuit is coupled to the oscillator, and produces an output signal with the particular frequency characteristic.

US Patent:

7495518, Feb 24, 2009

Filed:

Jul 5, 2007

Appl. No.:

11/825442

Inventors:

Wayne S. Lee - San Mateo CA, US
Kan G. Hoy - Fremont CA, US

Assignee:

Matsushita Electric Industrial - Osaka

International Classification:

H03L 7/06
H03L 7/18

US Classification:

331 16, 331 18, 331 44, 327158

Abstract:

A calibration circuit is configured to provide automatic feedback calibration during a tuning cycle. Automating the calibration process reduces the engineering evaluation time and mass production test time. The calibration settings vary as a function of frequency, and the calibration circuit automatically determines the proper calibration for any frequency application. The calibration circuit enhances communication performance by comparing and computing a time difference between a reference path and a feedback path. The calibration circuit is configured as part of a phase modulation path within a modulation circuit. The calibration circuit provides for calibration without prior knowledge of the system and reduced factory test time. The calibration circuit provides numerous advantages, including, but not limited to, accurate system results for time, frequency, temperature, and process variations with each calibration, or tuning.

US Patent:

7498958, Mar 3, 2009

Filed:

Jul 19, 2007

Appl. No.:

11/880416

Inventors:

Wayne S. Lee - San Mateo CA, US
Kan G. Hoy - Fremont CA, US

Assignee:

Matsushita Electric Industrial - Osaka

International Classification:

H03M 7/00

US Classification:

341 61, 341122

Abstract:

A fractional up-sampling filter is configured to convert a lower data rate to a higher data rate by using methods of interpolation to generate output digital data that corresponds to the higher data rate. For example, if the higher data rate output is 4/3 of the lower data rate input, then for every three (3) digital data values originally sampled by the fractional up-sampling filter, four (4) output digital data values are generated and output from the filter. These output digital data values are obtained by methods of interpolation. Interpolation is performed using different filter coefficients depending on the relative timing of the output digital data rate versus the original sampling rate. The fractional up-sampling filter utilizes a high frequency master clock to derive the fractional relationship between the original sampling rate to the new fractional sampling rate.

US Patent:

7792213, Sep 7, 2010

Filed:

Jun 25, 2007

Appl. No.:

11/823053

Inventors:

Wayne S. Lee - San Mateo CA, US

Assignee:

Panasonic Corporation - Osaka

International Classification:

H04K 1/02

US Classification:

375297, 330124 R

Abstract:

Embodiments of a multi-point push-out method are disclosed for a more accurate adjustment of minimum IQ values in order to maintain better continuity in the IQ trajectory for sampled IQ values near the origin. IQ trajectories near the origin are limited to a minimum IQ value by determining a specific scaling factor according to a position of the sampled IQ value relative to the origin and/or to the minimum IQ value. The minimum IQ value is also referred to as a threshold boundary value.

US Patent:

7839954, Nov 23, 2010

Filed:

Jun 19, 2007

Appl. No.:

11/820589

Inventors:

Wayne S. Lee - San Mateo CA, US

Assignee:

Panasonic Corporation - Osaka

International Classification:

H03C 3/00

US Classification:

375302, 375295, 375296, 375300

Abstract:

Sampled IQ values at the origin are revalued by applying a minimum distance, or radius, away from the (0,0) coordinate in the IQ domain, and applying a rotation about the origin for consecutive (0,0) samples, thereby improving communication performance. A direction of rotation is able to be predetermined or dynamically determined according to a correction look-up table or an IQ trajectory.

US Patent:

7956699, Jun 7, 2011

Filed:

Jul 17, 2009

Appl. No.:

12/505424

Inventors:

Toru Matsuura - Osaka, JP
Wayne S. Lee - San Mateo CA, US

Assignee:

Panasonic Corporation - Osaka

International Classification:

H03C 3/06

US Classification:

332126, 332127

Abstract:

A frequency modulator capable of performing frequency modulation without increasing quantization noise; and a method for adjusting the gain thereof are provided. An input signal is gain-adjusted by a gain adjustment section and outputted to a frequency modulation section. The frequency modulation section is gain-controlled based on a first signal. For setting a digital gain coefficient and an analog gain coefficient of the gain adjustment section, a test signal is inputted. In this state, in a generation section, first control information for setting the digital gain coefficient and second control information for setting the analog gain coefficient are generated based on information regarding a state of the frequency modulation section.