Method and device for changing over a first mode of a control device to a second mode, via a data bus
First Claim
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1. A method for switching between a first operating mode and a second operating mode of a target control device connected to a data bus, the method comprising:
- activating the target control device;
generating, using a test device, a predefined signal to be transmitted on the data bus, the predefined signal having a predefined frequency and a predefined pulse-duty factor; and
switching from the first operating mode of the target control device to the second operating mode of the target control device in response to the target control device detecting the predefined signal transmitted on the data bus;
wherein the predefined signal is changed if at least one other control device is active and coupled to the data bus, whereby the predefined signal is not detected by the target control device and the switching to the second operating mode of the target control device does not occur.
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Abstract
A method and a system for switching between a first operating mode and a second operating mode of a target control device connected to a data bus are provided. After activation of the target control device, a test device generates a predefined signal to be transmitted on the data bus, the predefined signal having a predefined frequency and a predefined pulse-duty factor. The target control device is switched from the first operating mode to the second operating mode in response to detecting the predefined signal transmitted on the data bus.
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Citations
16 Claims
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1. A method for switching between a first operating mode and a second operating mode of a target control device connected to a data bus, the method comprising:
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activating the target control device; generating, using a test device, a predefined signal to be transmitted on the data bus, the predefined signal having a predefined frequency and a predefined pulse-duty factor; and switching from the first operating mode of the target control device to the second operating mode of the target control device in response to the target control device detecting the predefined signal transmitted on the data bus; wherein the predefined signal is changed if at least one other control device is active and coupled to the data bus, whereby the predefined signal is not detected by the target control device and the switching to the second operating mode of the target control device does not occur. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 16)
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6. A method for switching between a first operating mode and a second operating mode of a target control device connected to a data bus, the method comprising:
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activating the target control device; generating, using a test device, a predefined signal to be transmitted on the data bus, the predefined signal having a predefined frequency and a predefined pulse-duty factor; and switching from the first operating mode of the target control device to the second operating mode of the target control device in response to the target control device detecting the predefined signal transmitted on the data bus; performing an access-security authentication after the switching to the second operating mode; wherein the second operating mode is a test mode for at least one of checking, programming and reprogramming the target control device, and wherein reprogramming of preset parameters of the target control device stored on a programmable memory is performed after a successful completion of the access-security authentication, and wherein the access-security authentication includes a seed-and-key authentication.
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12. A method for switching between a first operating mode and a second operating mode of a target control device connected to a data bus, the method comprising:
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activating the target control device; generating, using a test device, a predefined signal to be transmitted on the data bus, the predefined signal having a predefined frequency and a predefined pulse-duty factor; and switching from the first operating mode of the target control device to the second operating mode of the target control device in response to the target control device detecting the predefined signal transmitted on the data bus; performing a self-test by the target control device after the activation; and performing an access-security authentication after the switching to the second operating mode; wherein the second operating mode is a test mode for at least one of checking, programming and reprogramming the target control device, and wherein reprogramming of preset parameters of the target control device stored on a programmable memory is performed after a successful completion of the access-security authentication, wherein the switching occurs after the target control device detects the predefined signal during an initialization phase of the target control device. - View Dependent Claims (13, 14, 15)
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Specification