Distributed electronic design automation architecture

• US 8,326,926 B2
• Filed: 09/13/2005
• Issued: 12/04/2012
• Est. Priority Date: 09/13/2005
• Status: Active Grant

• Current Assignee: Siemens Industry Software Inc. (Siemens AG)
• Original Assignee: Mentor Graphics Corporation (Siemens AG)
• Inventors: Sangem, Venkanna, Mandavilli, Srinivas, Akella, Chandra Sekhar
• Primary Examiner(s): Moore, Ian N
• Assistant Examiner(s): ALEXANDER, JENEE LAUREN
• Application Number:
  US11/223,976
• Publication Number:
  US 20070073809A1
• Time in Patent Office: 2,639 Days
• Field of Search: 709204-205, 709/220, 709/248, 709/203, 707/201, 707/203, 715964-969, 715/751, 715753-772
• US Class Current: 709/204
• CPC Class Codes: G06F 2111/02 CAD in a network environment, e.g. collaborative CAD or distributed simulation
• CPC Class Codes: G06F 30/39 Circuit design at the physical level physical level design for reconfigurable circuits G06F30/347

Abstract

A copy of a design is stored at each of multiple clients. When a client user provides input indicating a wish to modify the design in some way, the input is captured and one or more commands created. The commands are forwarded to a server, which queues commands received from all of the clients and then forwards each of those commands back to each of the clients. Upon receiving commands from the server, each of the clients executes those commands in the order received. Each client also maintains data indicating settings for all clients in a current editing session. Before executing a design changing command, each client adjusts its settings to match those of the client from which that command originated.

Claims

1. A non-transitory machine-readable medium having stored thereon data representing sequences of instructions that, when executed by a processor, cause the processor to perform steps of a method comprising:

(a) receiving at a first computer user input indicating a first requested change to a printed circuit board design;

(b) transmitting data corresponding to the first requested change to a second computer;

(c) receiving at the first computer a communication from the second computer corresponding to the first requested change;

(d) in response to the communication received in step (c), making the first requested change to a copy of the printed circuit board design stored at the first computer;

(e) receiving multiple additional communications from the second computer, wherein each of the multiple additional communications corresponds to a subsequent requested change to the printed circuit board design,

each of the subsequent requested changes is a different change,

at least one of the subsequent requested changes originated at the first computer,

at least one of the subsequent requested changes originated at a computer which is not the first computer, and

each of the multiple additional communications and the communications received in step (c) includes an identifier associated with the originating computer for the requested change corresponding to the communication;

(f) determining, for each of the communications received in steps (c) and (e), the originating computer for the corresponding requested change; and

(g) prior to making each of the subsequent requested changes to the copy of the printed circuit board design stored at the first computer, adjusting settings of the first computer to match settings of the originating computer for that requested change, the adjusting being performed without modifying the copy of the printed circuit board design, wherein

for each of the subsequent requested changes, altering at least one of the settings of the first computer will cause that requested change to be made in a different manner, and wherein the settings of the first computer include a trace width or via diameter.

2. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving a communication from the second computer corresponding to a second requested change to the printed circuit board design, the second requested change originating from a computer other than the first computer; and

(i) in response to the communication received in step (h), making the second requested change to the copy of the printed circuit board design stored at the first computer, wherein

step (h) occurs after step (a) but before step (c), and step (i) occurs before step (d).

3. The non-transitory machine-readable medium of claim 2, wherein the settings of the first computer comprise parameter values of printed circuit board design-editing software that are applied when performing modifications to the copy of the printed circuit board design stored at the first computer.

4. The non-transitory machine-readable medium of claim 1, wherein

the data transmitted in step (b) comprises a command, the execution of which will cause the first requested change to be made to the copy of the printed circuit board design stored at the first computer,

the communication received in step (c) comprises the command transmitted in step (b), and

step (d) comprises executing the command received in step (c).

5. The non-transitory machine-readable medium of claim 1, wherein at least one of the subsequent requested changes originated at a third computer.

6. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving a communication at the first computer from the second computer corresponding to a second requested change to the printed circuit board design, the second requested change originating from one of the second computer or a third computer;

(i) determining that the second requested change requires action on a printed circuit board design object that is currently selected by a user not associated with the originating computer of the second requested change; and

(j) in response to the determination of step (i), rejecting the second requested change.

7. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving a communication from the second computer corresponding to a second requested change to the printed circuit board design;

(i) determining that the second requested change seeks to perform an invalid action; and

(j) in response to the determination of step (i), rejecting the second requested change.

8. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving at the first computer user input indicating a second requested change to the printed circuit board design;

(i) determining that the second requested change requires action on a printed circuit board design object that is currently selected by a user not associated with the first computer; and

(j) based on the determination of step (i), not transmitting to the second computer data corresponding to the second requested change.

9. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving at the first computer user input indicating a second requested change to the printed circuit board design;

(i) determining that the second requested change requires performing an invalid action; and

(j) based on the determination of step (i), not transmitting to the second computer data corresponding to the second requested change.

10. The non-transitory machine-readable medium of claim 1, comprising further instructions for performing the steps of:

(h) receiving at the first computer user input relating to the printed circuit board design;

(i) determining that the user input received in step (e) will not require change to the printed circuit board design;

(j) based on the determination of step (i), not transmitting to the second computer data corresponding to the user input received in step (h); and

(k) performing an action requested by the input received in step (h).

11. A non-transitory machine-readable medium having stored thereon data representing sequences of instructions that, when executed by a processor, cause the processor to perform steps of a method comprising:

(a) receiving transmissions from a plurality of client computers, the transmissions including data corresponding to changes to a printed circuit board design, each of the changes being requested by a sending client computer but not yet performed by the sending client computer;

(b) queuing the changes for which transmissions are received in step (a);

(c) forwarding information regarding each of the queued changes to each of the client computers for entry of one or more of those changes by each of the client computers, wherein information for the queued changes is forwarded in the same order in which data corresponding to those changes was received in step (a);

(d) receiving, subsequent to step (c), a request from a new client to join an editing session;

(e) in response to the request of step (d), forwarding to the new client a copy of the printed circuit board design and information corresponding to at least one of the queued changes, wherein the copy of the printed circuit board design does not include the at least one of the queued changes; and

(f) in response to the request of step (d), forwarding to the new client data regarding settings of each client computer of the plurality, wherein the settings of each client computer include values which can be modified without modifying the copy of the printed circuit board design, wherein modifying one or more values causes one of the at least one queued changes to be made in a different manner, and wherein the settings of each client computer include a trace width or via diameter.

12. The non-transitory machine-readable medium of claim 11, wherein the processor does not make the queued changes to the printed circuit board design.

13. The non-transitory machine-readable medium of claim 11, comprising further instructions for performing step comprising:

(g) obtaining, in response to step (d) and from a client computer of the plurality, the copy of the printed circuit board design and data indicating the at least one of the requested changes not included in the copy of the printed circuit board design.

14. A computerized system for modifying a design, comprising:

a server;

a first client; and

a second client, wherein each of the first and second clients is configured to perform steps that include

(c1) receiving user input indicating requested changes to the printed circuit board design,

(c2) transmitting to the server data corresponding to the requested changes,

(c3) receiving communications from the server corresponding to the requested

(c4) in response to the communications received in step (c3), making the requested changes to a local copy of the printed circuit board design stored at the client,

(c5) receiving communications from the server corresponding to requested printed circuit board design changes originating at the other of the first and second client,

(c6) making, to the local copy of the printed circuit board design and in response to the communications received in step (c5), the requested printed circuit board design changes originating at the other of the first and second clients,

(c7) determining, prior to making the changes in steps (c4) and (c6), and for each of the communications received in steps (c3) and (c5), the originating client for the requested printed circuit board design change corresponding to the received communication, and

(c8) prior to making each of the changes in steps (c4) and (c6), adjusting settings of the client to match settings of the originating client for the change being made, the adjusting being performed without modifying the copy of the printed circuit board design, wherein

for each change being made, altering at least one of the settings of the client will cause that change to be made in a different manner, and wherein the settings of the client include a trace width or via diameter.

15. The computerized system of claim 14, wherein the settings of the client comprise parameter values of printed circuit board design-editing software that are applied when performing modifications to the local copy of the printed circuit board design stored at the client.

16. The computerized system of claim 14, wherein the server is configured to perform steps of a method that include:

(s1) receiving the transmissions from the clients corresponding to the requested changes,

(s2) queuing the requested changes, and

(s3) forwarding, in the same order in which data corresponding to the requested changes was received in step (s1), information regarding each of the requested changes to each of the first and second clients, and wherein each client is configured to make changes to its local printed circuit board design copy in the same order in which the communications corresponding to those changes are forwarded from the server.

17. The computerized system of claim 16, further comprising a third client, and wherein the server is configured to perform steps that include:

(s4) receiving, subsequent to step (s3), a request from the third client to join an editing session, and

(s5) in response to the request of step (s4), forwarding to the third client a copy of the printed circuit board design and information corresponding to at least one of the requested changes, wherein the copy of the printed circuit board design does not include the at least one requested change.

18. The computerized system of claim 17, wherein the server is configured to perform steps that include:

(s6) in response to the request of step (s4), forwarding to the third client data regarding settings of the first and second clients, wherein each of the settings has a value which can be modified to cause at least one the requested changes to be made in a different manner.

19. The computerized system of claim 18, wherein the server and the second client are operating on the same computer.