In a particular embodiment, a method includes adjusting an input to a divider on a feedback path of a phase locked loop circuit based on a stored digital value representing a portion of a time-based waveform that is applied to a modulator circuit. The stored digital value is retrieved based on an output of the feedback …

Legal parties

Inventors (applicants): Xiaohua Kong, Nam V. Dang, Zhi Zhu
Assignees (initial): QUALCOMM Incorporated (San Diego, US)
Agents: Sam Talpalatsky (attorney), Nicholas J. Pauley (attorney), Joseph Agusta (attorney)

The application was examined by Joseph Chang (USPTO dept. 2817)


  • 1. A method comprising: …
  • 2. The method of claim 1 , further comprising reading the stored digital value …
  • 3. The method of claim 1 , wherein, when a second control value at a second …

Cited documents


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  • Hwang et al. US 7308596 B1, Dec. 1, 2007

Iv. Brief Description of the Drawings

FIG. 1 is a block diagram of a particular illustrative embodiment of a digital circuit to modulate a fixed seed value with a waveform generated from stored values; FIG. 2 is a block …


I. Field

The present disclosure is generally related to a method and digital circuit for generating a waveform from stored digital …

V. Detailed Description

A clock synchronization circuit, such as a PLL, may be used to generate an output clock that is locked to a received reference clock. A feedback path of the clock …

More details about Method and Digital Circuit for Generating a Waveform From Stored Digital Values

Miscellaneous patent data

Developed by Zhi Zhu et al., the patent extension term is 215 days, the inventor's address - San Diego, CA, the inventor's first name is Nam V., and his last name is Dang, the application publication date is Nov. 4, 2010, located in San Diego (US), the assignee organization is QUALCOMM Incorporated, 8 figures are supplied with the description, the grant number is 08742864, the assignee classification - a United States company, the examination was conducted by Joseph Chang (2817 USPTO department), the exemplary patent drawings are Block diagram of a second, Block diagram of a particular, Block diagram of a third, Method and Digital Circuit for Generating, similar patents are classified under Nonlinearity reduction or compensation, in transmission line, waveguide, cavity resonator, or radiation field of aerial, Subject matter not provided for in other groups of this subclass, Automatic frequency stabilization or control, using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated, Push-pull circuit, Magnetron type, Modulators in which carrier or one sideband is wholly or partially suppressed, one sideband wholly or partially suppressed, Plural modulator tubes, categorized under Phase or frequency locked loop as a primary classification, the agent's name is Joseph Agusta, the patent was granted on Jun. 3, 2014, the application number is 12/939,206 (U.S.), the exemplary claims include number 1, the invention is titled Method and Digital Circuit for Generating a Waveform From Stored Digital Values, the applicant's state - CA, city - San Diego, the known applicant's name is Kong Xiaohua, the protection scope is defined by 40 claims, illustrated by 8 drawings.

Invention classification information

The invention is classified under Phase or frequency locked loop, Sensing modulation (e.g., frequency modulation controlled oscillator, Tuning compensation, Modulating signal applied to plural elements of the loop, Means for changing frequency deviation. The designated search classifications include Modulating signal applied to plural elements of the loop, Phase or frequency locked loop, With digital element, Phase locked loop, Sensing modulation (e.g., frequency modulation controlled oscillator, Tuning compensation, Spread Spectrum.

Patent details
Publication number 08742864
Publication date Jun. 3, 2014
Kind code B2
Application number 12/939,206
Application date Nov. 4, 2010
Application type U
Application series code 12
Extension term 215
National classification 332/127
Total number of claims 40
Exemplary claims 1
Number of drawings 8
Number of figures 8
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