Method for Determining a Master Time Signal, Vehicle, and System
First Claim
1. A method for determining a master time signal in a vehicle, the method comprising the acts of:
- a) receiving at least one first server time signal from a first time server;
b) receiving at least one second server time signal from a second time server,c) comparing the first server time signal with the second server time signal to determine at least one first time difference;
d) storing the first time difference;
e) determining an availability of the first server time signal and/or the second server time signal;
f) using the stored first time difference to determine the master time signal at least when at least one of the server time signals is not available.
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Accused Products
Abstract
A method is provided for determining a master time signal, in particular in a vehicle. The method includes the acts of: a) receiving at least one first server time signal from a first time server; b) receiving at least one second server time signal from a second time server; c) comparing the first server time signal with the second server time signal in order to determine at least one first time difference; d) storing the first time difference; e) determining an availability of the first server time signal and/or of the second server time signal; f) using the stored first time difference to determine the master time signal at least if at least one of the server time signals is not available.
6 Citations
16 Claims
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1. A method for determining a master time signal in a vehicle, the method comprising the acts of:
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a) receiving at least one first server time signal from a first time server; b) receiving at least one second server time signal from a second time server, c) comparing the first server time signal with the second server time signal to determine at least one first time difference; d) storing the first time difference; e) determining an availability of the first server time signal and/or the second server time signal; f) using the stored first time difference to determine the master time signal at least when at least one of the server time signals is not available. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A vehicle, comprising:
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a bus system configured to communicate with one or more control devices of the vehicle; a memory; a master time signal unit that determines a master time signal, the master time signal unit being configured to; receive a first server time signal from a first time server, receive a second server time signal from a second time server, compare the first server time signal with the second server time signal to determine a first time difference and to store the first time difference, determine an availability of the first server time signal and/or the second server time signal, and use the stored first time difference to determine the master time signal at least when one of the first or second server time signals is not available, wherein the master time signal, the first server time signal, the second server time signal and/or the first time difference is stored in the memory. - View Dependent Claims (14, 15)
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16. A system, comprising:
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one or more mobile terminal devices, a vehicle, the vehicle comprising; a bus system configured to communicate with one or more control devices of the vehicle; a memory; a master time signal unit that determines a master time signal, the master time signal unit being configured to; receive a first server time signal from a first time server, receive a second server time signal from a second time server, compare the first server time signal with the second server time signal to determine a first time difference and to store the first time difference, determine an availability of the first server time signal and/or the second server time signal, and use the stored first time difference to determine the master time signal at least when one of the first or second server time signals is not available, wherein the master time signal, the first server time signal, the second server time signal and/or the first time difference is stored in the memory; wherein the first time server and/or the second time server are formed by a respective mobile terminal device.
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Specification