Claims
- 1. An operating method for a data bus having a first clock pulse generator, the method comprising the acts of:
determining a failure of the first clock pulse generator; and activating a second clock pulse generator when the first clock pulse generator fails.
- 2. The operating method according to claim 1, wherein, under normal operating conditions, the first and the second clock pulse generator are activated simultaneously and are mutually synchronized.
- 3. The operating method according to claim 2, further comprising the acts of:
synchronizing one of the first and second clock pulse generators having a lower frequency to a clock pulse frequency of the other one of the first and second clock pulse generators having a higher frequency.
- 4. The operating method according to claim 3, further comprising the act of stopping a transmission operation of the clock pulse generator having the lower frequency.
- 5. The operating method according to claim 2, wherein a clock pulse generator having a lower frequency is synchronized with a clock pulse generator having a higher frequency only when a clock pulse frequency of the clock pulse generator having a higher frequency does not exceed a defined rate.
- 6. The operating method according to claim 3, wherein a clock pulse generator having a lower frequency is synchronized with a clock pulse generator having a higher frequency only when a clock pulse frequency of the clock pulse generator having a higher frequency does not exceed a defined rate.
- 7. The operating method according to claim 4, wherein a clock pulse generator having a lower frequency is synchronized with a clock pulse generator having a higher frequency only when a clock pulse frequency of the clock pulse generator having a higher frequency does not exceed a defined rate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
199 47 662.4 |
Oct 1999 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of PCT Application No. PCT/EP00/08785 filed Sep. 8, 2000.
[0002] This application is related to copending applications entitled “Data Bus for Several Users”, U.S. Ser. No. ______; “Operating Method for a Data Bus for Several Users With Flexible Timed Access”, U.S. Ser. No. ______; and “Operating Method for Two Data Buses”, U.S. Ser. No. ______, filed on even date herewith.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP00/08785 |
Sep 2000 |
US |
Child |
10114331 |
Apr 2002 |
US |