Object detector apparatus and method
First Claim
1. An object detector apparatus, comprising:
- a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and
an analyser configured to sample a signal from the object received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set;
wherein the analyser is configured to sample a signal from the same object received by the receiver using a second set of sampling parameters which differs from the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set, andthe output based on the comparison of the first sampled data set with the at least one previously sampled data set, and the output based on the comparison of the second sampled data set with the at least one previously sampled data set, are used in determining whether the object has been detected.
1 Assignment
0 Petitions
Accused Products
Abstract
An object detector apparatus. The object detector apparatus comprises a receiver which is configured to receive a signal from an object having a repetitive motion, in which the signal repeats at a frequency that is dependent on the frequency of the repetitive motion of the object. The object detector apparatus further comprises an analyzer which is configured to sample a signal received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set. The analyzer is also operable to sample a signal received by the receiver using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set.
28 Citations
26 Claims
-
1. An object detector apparatus, comprising:
-
a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser configured to sample a signal from the object received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set; wherein the analyser is configured to sample a signal from the same object received by the receiver using a second set of sampling parameters which differs from the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set, and the output based on the comparison of the first sampled data set with the at least one previously sampled data set, and the output based on the comparison of the second sampled data set with the at least one previously sampled data set, are used in determining whether the object has been detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An object detector apparatus, comprising:
-
a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser coupled to the receiver, the analyser configured to sample the signal according to a first set of sampling parameters into a first sampled data set, and to produce a first output signal based on a comparison of the first sampled data set with at least one previously sampled data set, and to concurrently sample the signal using a second set of sampling parameters which differs from the first set of sampling parameters into a second sampled data set, and to produce a second output signal based on a comparison of the second sampled data set with at least one previously sampled data set, wherein the first output signal and the second output signal are used in determining whether the object has been detected.
-
-
21. An object detector apparatus, comprising:
-
a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser coupled to the receiver, the analyser configured to sample a first signal from the object received by the receiver according to a first set of sampling parameters and to produce a first output signal based on a comparison of the first sampled data set with at least one previously sampled data set, and the analyser is configured to subsequently sample a second signal from the same object received by the receiver subsequent to the first signal according to a second set of sampling parameters which differ from the first set of sampling parameters, and to produce a second output signal based on a comparison of the second sampled data set with at least one previously sampled data set, wherein the first output signal and the second output signal are used in determining whether the object has been detected.
-
-
22. A method of detecting the presence of an object, the method comprising:
-
(i) receiving a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; (ii) sampling the signal received from the object according to a first set of sampling parameters into a first sampled data set, and producing an output signal based on a comparison of the first sampled data set with a first previously sampled data set; and (iii) sampling the signal received from the same object according to a second set of sampling parameters, which differ from the first set of sampling parameters, into a second sampled data set, and producing an output signal based on a comparison of the second sampled data set with a second previously sampled data set, wherein the output signal based on the comparison of the first sampled data set with the first previously sampled data set, and the output signal based on the comparison of the second sampled data set with the second previously sampled data set, are used in determining whether the object has been detected. - View Dependent Claims (23, 24, 25, 26)
-
Specification