1. A method of updating a scan tool, comprising the steps of:
receiving a scan tool configuration level supplied to a vehicle from a scan tool connected to the vehicle;
wirelessly connecting to a call center from the vehicle using a telematics unit on the vehicle;
accessing a scan tool database at the call center and determining whether a diagnostics software upgrade is needed by comparing the scan tool configuration level with information obtained from the scan tool database; and
in response to determining that the diagnostics software upgrade is needed:
providing the diagnostics software upgrade from the call center to the vehicle via the telematics unit; and
reprogramming the scan tool using the diagnostics software upgrade.
2. The method of claim 1, wherein the receiving step further comprises receiving the scan tool configuration level as data transmitted to the telematics unit from the scan tool via a data link connector.
3. The method of claim 1, wherein the accessing step further comprises sending the information to the telematics unit from the call center and determining whether the diagnostics software upgrade is needed by comparing the information and scan tool configuration level at the telematics unit.
4. The method of claim 1, wherein the reprogramming step further comprises querying a service technician about the diagnostics software upgrade via the scan tool and upgrading the scan tool if the technician accepts.
5. A method of updating a scan tool, comprising the steps of:
connecting a scan tool to a vehicle telematics unit via a data link connector;
sending current scan tool configuration level data from the scan tool to the vehicle telematics unit;
establishing a wireless connection between the telematics unit and a call center;
accessing information from a scan tool database at the call center;
sending the information from the call center to the telematics unit;
determining whether a diagnostics software upgrade is needed by comparing, at the telematics unit, the information with the current scan tool configuration level data;
providing the diagnostics software upgrade from the call center to the vehicle if the diagnostics software upgrade is determined to be needed; and
reprogramming the scan tool using the diagnostics software upgrade.
6. The method of claim 5, wherein the sending step is initiated by the scan tool.
7. The method of claim 5, wherein the sending step is initiated by the telematics unit.
8. The method of claim 5, wherein the scan tool configuration level further comprises software revision information.
9. The method of claim 5, wherein the reprogramming step further comprises querying a service technician about the diagnostics software upgrade via the scan tool and upgrading the scan tool if the technician accepts.
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. Device for breaking down the dynamic range of an incident optical signal, this device being characterized in that it comprises fully optical means capable of breaking down this dynamic range.
2. Device set forth in claim 1, in which the fully optical breaking down means comprise:
fully optical means of division capable of dividing the incident optical signal into N+1 optical signals S0, S1, S2, . . . ,SN, where N is an integer equal to at least 1, each of these N+1 optical signals having an attenuation with respect to the incident optical signal,
fully optical means of making a time offset, capable of offsetting the optical signals S1 to SN in time with respect to the optical signal S0, and
fully optical multiplexing means capable of multiplexing the optical signals offset in time.
3. Device set forth in claim 2, in which the fully optical division means comprise first optical fiber couplers.
4. Device set forth in claim 3, in which the first optical couplers are single-mode optical fiber couplers.
5. Device set forth in claim 2, in which the fully optical time offset means comprise N optical fibers.
6. Device set forth in claim 5, in which the N optical fibers are single mode.
7. Device set forth in claim 2, in which the fully optical multiplexing means comprise second optical fiber couplers.
8. Device set forth in claim 7, in which the second optical couplers are single mode optical fiber couplers.
9. System for measuring an optical signal, this system comprising:
the device for breaking down the dynamic range of an incident optical signal according to claim 1,
means of photo detection of the optical signal for which the dynamic range was broken down by this device, these photo detection means being capable of providing an electrical signal representative of the optical signal for which the dynamic range was broken down, and
electronic means of processing this electrical signal, capable of reconstituting the incident optical signal.
10. System set forth in claim 9, in which the electronic processing means include an oscilloscope or a digitizer.