Murali K Yeddanapudi

US Patent:

7464373, Dec 9, 2008

Filed:

Dec 10, 2003

Appl. No.:

10/733789

Inventors:

Mehmet Yunt - Natick MA, US
Murali Yeddanapudi - Watertown MA, US
Sanjai Singh - Bangalore, IN
John Ciolfi - Wellesley MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06F 9/44

US Classification:

717125

Abstract:

A system and method of exposing debugging information in a graphical modeling and execution environment is disclosed. The present invention allows a user to view debugging information in the same window as the graphical view of the model being executed. Debugging data is associated with relevant components of the model displayed in the graphical view. A separate execution list view shows the methods called during the execution of the block diagram in the current time step up until the current point in execution. User-set breakpoints and conditional breakpoints may be set in both the model view and the execution list view. Values may be obtained for all of the displayed methods. The debugging tool may be implemented by using it in conjunction with a graphical modeling and execution environment, such as a block diagram environment or state diagram environment.

US Patent:

7487077, Feb 3, 2009

Filed:

Dec 22, 2004

Appl. No.:

11/021511

Inventors:

Michael I. Clune - Natick MA, US
Andrew Grace - Sherborn MA, US
Murali Yeddanapudi - Watertown MA, US
Ramamurthy Mani - Needham MA, US
Pieter J. Mosterman - Framingham MA, US
Atul Suri - Watertown MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06G 7/62

US Classification:

703 17, 716 6

Abstract:

A discrete event system (DES) modeling environment models the occurrence of events independent of continuous model time. In a DES modeling environment, state transitions depend not directly on time, but rather aperiodic discrete incidents known as events. A discrete event modeling environment can be used to model a control system using one or more discrete event-driven components. The event-driven components can be used to model certain portions of a control system that cannot be accurately modeled using a time-based model.

US Patent:

7496895, Feb 24, 2009

Filed:

Dec 29, 2004

Appl. No.:

11/025218

Inventors:

Pieter J. Mosterman - Framingham MA, US
Mehmet Yunt - Natick MA, US
Murali Yeddanapudi - Watertown MA, US
Jay Ryan Torgerson - Hopkinton MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06F 9/44

US Classification:

717124, 717125, 717126, 717127

Abstract:

A Unified Debugger that enables the debugging of graphical models with combinations of entities from multiple domains such as time-based block diagrams, statecharts, and physical system models, with additional features for the debugging of hand-written and automatically generated code is disclosed. A view of the entity being executed that is consistent with the type of the modeling domain to which the entity currently being executed belongs is automatically generated for a user. Rather than requiring a user to manually transition from one debugger to the next, the Unified Debugger applies the appropriate debugging features from each modeling domain. The Unified Debugger also enables integration of diagnostic information from a multitude of modeling domains into a central user interface. In addition, a standard diagnostic interface which spans a plurality of modeling domains is defined that enables the customization of debug behavior.

US Patent:

7640154, Dec 29, 2009

Filed:

Dec 22, 2004

Appl. No.:

11/021507

Inventors:

Michael I. Clune - Natick MA, US
Andrew Grace - Sherborn MA, US
Murali Yeddanapudi - Watertown MA, US
Ramamurthy Mani - Needham MA, US
Pieter J. Mosterman - Framingham MA, US
Atul Suri - Watertown MA, US

Assignee:

The Math Works, Inc. - Natick MA

International Classification:

G06F 9/45
G06F 7/60
G06F 17/20
G05B 11/32
G06F 19/00

US Classification:

703 22, 703 2, 703 17, 700 67, 700 97

Abstract:

A discrete event system (DES) modeling environment models the occurrence of events independent of continuous model time. In a DES modeling environment, state transitions depend not on time, but rather asynchronous discrete incidents known as events. A discrete event modeling environment can be used to model a control system using one or more discrete event-driven components. The event-driven components can be used to model certain portions of a control system that cannot be accurately modeled using a time-based model.

US Patent:

7681151, Mar 16, 2010

Filed:

Feb 6, 2007

Appl. No.:

11/703336

Inventors:

John Ciolfi - Wellesley MA, US
Michael David Tocci - Shrewsbury MA, US
Mojdeh Shakeri - Southborough MA, US
Murali Yeddanapudi - Watertown MA, US
Kai Tuschner - Leinfelden-Echterdingen, DE
Ramamurthy Mani - Needham MA, US

Assignee:

The Math Works, Inc. - Natick MA

International Classification:

G06F 17/50

US Classification:

716 1, 716 11, 716 17, 716 18, 703 14

Abstract:

A method is provided that includes pattern-matching portions of a block diagram model as being equivalent, and creation of a common set of instructions in place of the occurrences of the pattern-matched portions to enhance the efficiency of simulation or generated code for the block diagram model, such as by a reduced image size. Diagnostics are also available to provide information on the execution structure of the block diagram and guidance on how to modify block of the block diagram to obtain reduced image size by increasing the amount of matching patterns. Also, automatically generated hierarchical structures, a tool to control the function signature and the ability for a user to control file packaging which all provide flexible control over the generated code for block diagrams, are provided.

US Patent:

7774172, Aug 10, 2010

Filed:

Dec 10, 2003

Appl. No.:

10/733788

Inventors:

Mehmet Yunt - Natick MA, US
Murali Yeddanapudi - Watertown MA, US
Sanjai Singh - Bangalore, IN
John Ciolfi - Wellesley MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06F 7/60
G06F 17/10
G06F 9/44

US Classification:

703 2, 717125, 717129, 715967

Abstract:

A system and method of exposing debugging information in a graphical modeling and execution environment is disclosed. The present invention allows a user to view debugging information in the same window as the graphical view of the model being executed. Debugging data is associated with relevant components of the model displayed in the graphical view. A separate execution list view shows the methods called during the execution of the block diagram in the current time step up until the current point in execution. User-set breakpoints and conditional breakpoints may be set in both the model view and the execution list view. Values may be obtained for all of the displayed methods. The debugging tool may be implemented by using it in conjunction with a graphical modeling and execution environment, such as a block diagram environment or state diagram environment.

US Patent:

7809545, Oct 5, 2010

Filed:

Apr 16, 2003

Appl. No.:

10/414644

Inventors:

John Edward Ciolfi - Wellesley MA, US
Ramamurthy Mani - Needham MA, US
Donald Paul Orofino - Sudbury MA, US
Mojdeh Shakeri - Southborough MA, US
Marc Ullman - Framingham MA, US
Murali Yeddanapudi - Watertown MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06F 9/45
G06F 9/44
G06F 9/06
G06F 9/00

US Classification:

703 22, 717105, 717106, 717107, 717108, 717109

Abstract:

A method of controlling the conditional execution of elements and subsystems in a block diagram is disclosed. Data structures known as Execution Contexts are created and associated with individual block diagram elements and subsystems. The Execution Contexts allow execution of the associated element or subsystem upon satisfaction of a specified pre-condition. The Execution Contexts may be inherited by other elements and subsystems in the block diagram and propagated programmatically throughout the block diagram. The use of the Execution Contexts allows for efficient code generation and block diagram execution, as well as supporting modular design concepts.

US Patent:

7835889, Nov 16, 2010

Filed:

Sep 6, 2005

Appl. No.:

11/221160

Inventors:

Fu Zhang - Natick MA, US
Murali Yeddanapudi - Watertown MA, US

Assignee:

The MathWorks, Inc. - Natick MA

International Classification:

G06F 17/10

US Classification:

703 2

Abstract:

A method, system and apparatus for generating a variable transport delay for use in modeling a dynamic system. The variable transport delay of the present invention may be calculated using a variety of means, including the use of a lookup table generated at a variety of time steps such that an accurate variable transport delay can be calculated by interpolation.