Method and chip unit for addressing and/or activating a user of a serial data bus

• US 20060168378A1
• Filed: 06/05/2003
• Published: 07/27/2006
• Est. Priority Date: 06/10/2002
• Status: Abandoned Application

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Muth, Matthias
• Application Number:
  US10/517,673
• Publication Number:
  US 20060168378A1
• Time in Patent Office: Days
• US Class Current: 710/106
• CPC Class Codes: G06F 1/3209 Monitoring remote activity, e.g. over telephone lines or network connections
• CPC Class Codes: G06F 1/3287 by switching off individual functional units in the computer system
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof
• CPC Class Codes: H04L 12/40039 Details regarding the setting of the power status of a node according to activity on the bus
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

To further develop a method and a chip unit (30) for addressing and/or activating at least one user (40) that is associated with at least one data base (10), in particular at least one C[ontroller] A[rea] N[etwork] bus, and is intended to carry out at least one application, in such a way that individual users (40) on the network, i.e. individual users (40) on the data bus (10), can be woken selectively and in a targeted manner so that individual subnetworks can be formed in this way as and when required without the need for the whole network to be woken up, it is proposed that in the event of at least one incoming message occurring on the data bus (10), at least one protocol controller unit (42) associated with the user (40) is supplied with voltage first.

Claims

1. A method of addressing and/or activating at least one user that is associated with at least one serial data bus, in particular a C[ontroller] A[rea] N[etwork] bus, and is intended to carry out at least one application, characterized in that, in the event of at least one incoming message occurring on the data bus, at least one protocol controller unit associated with the user is supplied with voltage first.

2. A method as claimed in claim 1, characterized

in that the protocol controller unit is addressed by the incoming message,

in that the incoming message is compared with at least one reference message that is associated with the application and is stored in the protocol controller unit.

in that if there is a correspondence and/or match between the incoming message and the reference message, at least one acknowledgement goes to at least one transceiver unit connected upstream of the user, and

in that the application, particularly at least one application controller unit associated with the user, is activated by the transceiver unit.

3. A method as claimed in claim 1, characterized in that the application, particularly the application controller unit, is only supplied with voltage if the incoming message and the reference message correspond and/or match.

4. A transceiver unit for carrying out a method as claimed in claim 1, characterized in that the transceiver unit

is connected to the data bus,

is in communication with the protocol controller unit, and

is in communication with the application controller unit.

5. A transceiver unit as claimed in claim 4, characterized by at least one set of control logic that is associated with the transceiver unit and/or is implemented in the transceiver unit

6. A first voltage regulator that is connected to at least one battery unit

and that is in communication with at least one transceiver unit, in particular a transceiver unit as claimed in claim 4, for supplying at least one protocol controller unit which is associated with at least one user provided for carrying out at least one application, with voltage in the event of at least one incoming message that occurs on at least one serial databus, in particular on at least one C[ontroller]A[rea]N[etwork] bus.

7. A second voltage regulator which is connected to at least one battery unit and which is in communication with at least one transceiver unit, in particular a transceiver unit as claimed in claim 4, which second voltage regulator is intended to supply voltage to at least one application controller unit, which is associated with at least one user provided for carrying out at least one application, in the event of a correspondence and/or match between at least one incoming message that occurs on at least one serial data bus, in particular on at least one C[ontroller]A[rea]N[etwork] bus, and at least one reference message stored in at least one protocol controller unit and associated with the application.

8. A chip unit, particularly a system chip unit, for addressing and/or activating at least one user that is associated with at least one data bus, in particular at least one C[ontroller] A[rea] N[etwork] bus, and is intended to carry out at least one application, characterized by

at least one transceiver unit as claimed in claim 4,

at least one first voltage regulator as claimed in claim 6, and

at least one second voltage regulator as claimed in claim 7.

9. A protocol controller unit for comparing at least one incoming message

which occurs on at least one serial data bus, in particular on at least one C[ontroller] A[rea] N[etwork] bus, with at least one stored reference message which is associated with at least one application to be carried out by at least one user, in particular by means of at least one message comparator and/or message filter, characterized in that in the event of one or more incoming messages, the protocol controller unit must be first supplied with a voltage.

10. A protocol controller unit as claimed in claim 9, characterized by at least

one timing generator, in particular a quartz unit, which enables the protocol controller unit to have timing of its own, in particular quartz timing.

11. An application controller unit which is to be supplied with voltage only

in the event of a correspondence and/or match between at least one incoming message that occurs on at least one serial data bus, in particular on at least one C[ontroller] A[rea] N[etwork] bus, and at least one stored reference message associated with at least one application to be carried out by at least one user.

12. (canceled)

13. (canceled)

14. (canceled)

15. (canceled)