1. A method of a signal processor of a calculator, the method comprising:
creating, via the signal processor, in response to user input to the calculator, a plurality of mathematical expressions;
creating a set of links between each of the plurality of mathematical expressions to form a dynamic computational environment within the calculator;
receiving, in response to user input to the calculator, a change to one of the plurality of mathematical expressions; and
propagating the received change via the set of links to update each of the plurality of mathematical expressions affected by the change.
2. The method of claim 1, wherein the plurality of mathematical expressions are located in two or more applications within the calculator.
3. The method of claim 2, wherein a first one of the two or more applications is an algebraic environment and a second one of the two or more applications is a graphing environment.
4. The method of claim 2, wherein a first one of the two or more applications is a programming environment and a second one of the two or more applications is a graphing environment.
5. The method of claim 1, further comprising displaying the plurality of mathematical expression on a user interface.
6. The method of claim 1, wherein a mathematical expression is an equation, a graph, a program or a spread sheet.
7. A computing system, comprising:
a user interface having a display and an input device; and
a processor coupled to the user interface and to memory, wherein the processor is configured to execute program instructions stored in the memory to produce a dynamic computational environment, wherein, the program instructions are configured to:
create, in response to user input to the computing system, a plurality of mathematical expressions;
create a set of links between each of the plurality of mathematical expressions to form a dynamic computational environment within the calculator;
receive, in response to user input to the computing system, a change to one of the plurality of mathematical expressions; and
propagate the received change via the set of links to update each of the plurality of mathematical expressions affected by the change.
8. The computing system of claim 7, wherein the user interface is configured to display the plurality of mathematical expression.
9. The computing system of claim 7 being a handheld calculator.
10. A non-transitory computer readable medium comprising executable instruction to cause a calculator to perform a method comprising:
creating, in response to user input to the calculator, a plurality of mathematical expressions;
creating a set of links between each of the plurality of mathematical expressions to form a dynamic computational environment within the calculator;
receiving, in response to user input to the calculator, a change to one of the plurality of mathematical expressions; and
propagating the received change via the set of links to update each of the plurality of mathematical expressions affected by the change.
11. The method of claim 10, wherein a mathematical expression is an equation, a graph, a program or a spread sheet.
12. The method of claim 10, wherein the plurality of mathematical expressions are located in two or more applications within the calculator.
13. The method of claim 12, wherein a first one of the two or more applications is an algebraic environment and a second one of the two or more applications is a graphing environment.
14. The method of claim 12, wherein a first one of the two or more applications is a programming environment and a second one of the two or more applications is a graphing environment.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An operation method of a first communication node in a vehicle network, comprising:
transitioning, by a processor, from a sleep mode to an active mode;
generating, by the processor, a first message including a first information that indicates at least one communication node to be operated in the active mode; and
transmitting, by the processor, the first message to a second communication node.
2. The operation method of claim 1, wherein the first information is identification information regarding the at least one communication node to be operated in the active mode.
3. The operation method of claim 2, wherein the identification information is at least one selected from the group consisting of: an Internet protocol (IP) address, a medium access control (MAC) address, and a port number of the at least one communication node to be operated in the active mode.
4. The operation method of claim 1, wherein the first information is information indicating a vehicle system that corresponds to the at least one communication node to be operated in the active mode.
5. The operation method of claim 1, wherein the first information is information indicating a vehicle operation performed by the at least one communication node to be operated in the active mode.
6. The operation method of claim 1, wherein the second communication node is a switch or a bridge, and the first communication node is an end node connected to the second communication node.
7. The operation method of claim 1, wherein the first message is generated based on an Ethernet protocol, and the first information is included in at least one of a medium access control (MAC) header and a logic link control (LLC) frame of the first message.
8. An operation method of a first communication node in a vehicle network, comprising:
receiving, by a processor, a first message from a second communication node;
detecting, by the processor, at least one communication node to be operated in an active mode, the at least one communication node indicated by a first information included in the first message; and
transmitting, by the processor, the first message to the at least one communication node to be operated in the active mode.
9. The operation method of claim 8, further comprising:
transmitting, by the processor, to at least one communication node, not indicated by the first information among a plurality of communication nodes connected to the first communication node, a second message instructing the at least one communication node not indicated by the first information to operate in a passive mode;
wherein in the passive mode, a physical (PHY) layer unit included in a communication node is woken up, and in the active mode, the PHY layer unit and a medium access control (MAC) layer unit included in a communication node are woken up.
10. The operation method of claim 8, wherein the first information is identification information regarding the at least one communication node to be operated in the active mode.
11. The operation method of claim 10, wherein the identification information is at least one selected from the group consisting of: an Internet protocol (IP) address, a medium access control (MAC) address, and a port number of the at least one communication node to be operated in the active mode.
12. The operation method of claim 8, wherein the first information is information indicating a vehicle system that corresponds to the at least one communication node to be operated in the active mode.
13. The operation method of claim 8, wherein the first information is information indicating a vehicle operation performed by the at least one communication node to be operated in the active mode.
14. The operation method of claim 8, wherein the first communication node is a switch or a bridge, and the second communication node is an end node connected to the first communication node.
15. An operation method of a first communication node in a vehicle network, comprising:
receiving, by a processor, a first message from a second communication node; and
transitioning, by the processor, from a sleep mode to a passive mode when an intensity of a reception signal of the first message is equal to or greater than a predetermined reference,
wherein in the passive mode, a physical (PHY) layer unit included in the first communication node is woken up.
16. The operation method of claim 15, further comprising:
transitioning, by the processor, from the passive mode to an active mode in response to determining by an first information included in the first message that the first communication node is a communication node to be operated in the active mode,
wherein in the active mode, a medium access control (MAC) layer unit included in the first communication node is woken up.
17. The operation method of claim 16, wherein the first information is at least one selected from the group consisting of: an Internet protocol (IP) address, a medium access control (MAC) address, and a port number of the first communication node.
18. The operation method of claim 16, wherein the first information is information indicating a vehicle system that corresponds to the first communication node.
19. The operation method of claim 16, wherein the first information is information indicating a vehicle operation performed by the first communication node.
20. The operation method of claim 15, further comprising:
transitioning from the passive mode to the sleep mode, by the processor, when failing to receive a second message to instruct transition to the active mode from the second communication node within a predetermined time period from a reception end time of the first message.