Measuring apparatus, measuring method and test apparatus
First Claim
1. A measurement apparatus comprising:
- a first timing detecting section that detects first change timings of a signal under measurement;
a second timing detecting section that detects second change timings of the signal under measurement;
a buffer section that buffers data indicating the first change timings detected by the first timing detecting section and data indicating the second change timings detected by the second timing detecting section; and
a calculating section that acquires, from the buffer section, the data indicating the first change timings and the data indicating the second change timings, calculates a time difference between the first change timings and the second change timings, and outputs the time difference, whereinthe buffer section includes;
a first FIFO section that sequentially stores pieces of the data indicating the first change timings detected by the first timing detecting section, and sequentially outputs the stored pieces of data in an order in which the pieces of data were received; and
a second FIFO section that sequentially stores pieces of the data indicating the second change timings detected by the second timing detecting section, and sequentially outputs the stored pieces of data in an order in which the pieces of data were received.
2 Assignments
0 Petitions
Accused Products
Abstract
Provided is a measurement apparatus including a first timing detecting section that detects first change timings of a signal under measurement, a second timing detecting section that detects second change timings of the signal under measurement, a buffer section that buffers data indicating the first change timings detected by the first timing detecting section and data indicating the second change timings detected by the second timing detecting section, and a calculating section that acquires, from the buffer section, the data indicating the first change timings and the data indicating the second change timings, calculates a temporal relationship between the first change timings and the second change timings, and outputs the temporal relationship.
3 Citations
10 Claims
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1. A measurement apparatus comprising:
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a first timing detecting section that detects first change timings of a signal under measurement; a second timing detecting section that detects second change timings of the signal under measurement; a buffer section that buffers data indicating the first change timings detected by the first timing detecting section and data indicating the second change timings detected by the second timing detecting section; and a calculating section that acquires, from the buffer section, the data indicating the first change timings and the data indicating the second change timings, calculates a time difference between the first change timings and the second change timings, and outputs the time difference, wherein the buffer section includes; a first FIFO section that sequentially stores pieces of the data indicating the first change timings detected by the first timing detecting section, and sequentially outputs the stored pieces of data in an order in which the pieces of data were received; and a second FIFO section that sequentially stores pieces of the data indicating the second change timings detected by the second timing detecting section, and sequentially outputs the stored pieces of data in an order in which the pieces of data were received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A measurement method comprising:
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detecting first change timings of a signal under measurement; detecting second change timings of the signal under measurement; sequentially storing, in a first FIFO section, pieces of data indicating the first change timings, and sequentially outputting the stored pieces of data in an order in which the pieces of data were received; sequentially storing, in a second FIFO section, pieces of data indicating the second change timings and sequentially outputting the stored pieces of data in an order in which the pieces of data were received; and acquiring the data indicating the first change timings from the first FIFO section and the data indicating the second change timings from the second FIFO section, calculating a time difference between the first change timings and the second change timings, and outputting the time difference.
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10. A test apparatus that tests a device under test, comprising:
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a test signal supplying section that supplies the device under test with a test signal for testing the device under test; and a measurement apparatus that measures a timing of a response signal output by the device under test in response to the test signal, wherein the measurement apparatus includes; a first timing detecting section that detects first change timings of the response signal; a second timing detecting section that detects second change timings of the response signal; a first FIFO section that buffers the first change timings detected by the first timing detecting section; a second FIFO section that buffers the second change timings detected by the second timing detecting section; and a calculating section that acquires, from the first FIFO section and the second FIFO section, the first change timings and the second change timings, calculates a temporal relationship between the first change timings and the second change timings, and outputs the temporal relationship.
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Specification