Method and device for pulse width estimation
First Claim
1. A pulse width estimation method applied between an integrated circuit and a circuit system, the circuit system being configured to generate a reference pulse with a predetermined pulse width, the pulse width estimation method comprising steps of:
- generating an under-test pulse with an under-test pulse width by the integrated circuit;
delivering the under-test pulse and the reference pulse to the integrated circuit for multiplying the under-test pulse width of the under-test pulse and the predetermined pulse width of the reference pulse by a timing gain and thereby obtaining a gained under-test pulse and a gained reference pulse, respectively;
providing a count pulse for sampling the gained under-test pulse and the gained reference pulse by the integrated circuit, and thereby obtaining a first count number and a second count number, respectively; and
estimating the under-test pulse width by using the predetermined pulse width, the first count number and the second count number.
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Abstract
A pulse width estimation method, applied between an integrated circuit and a circuit system for generating a reference pulse with a predetermined pulse width, includes steps for the following: generating an under-test pulse with an under-test pulse width by the integrated circuit; delivering the under-test and reference pulses to the integrated circuit for multiplying the under-test pulse width and the predetermined pulse width thereof by a timing gain and thereby obtaining a gained under-test pulse and a gained reference pulse, respectively; providing, by the integrated circuit, a count pulse for sampling the gained under-test pulse and the gained reference pulse and thereby obtaining a first count number and a second count number, respectively; and estimating the under-test pulse width by using the predetermined pulse width, the first count number and the second count number. A pulse width estimation device is also provided.
110 Citations
15 Claims
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1. A pulse width estimation method applied between an integrated circuit and a circuit system, the circuit system being configured to generate a reference pulse with a predetermined pulse width, the pulse width estimation method comprising steps of:
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generating an under-test pulse with an under-test pulse width by the integrated circuit; delivering the under-test pulse and the reference pulse to the integrated circuit for multiplying the under-test pulse width of the under-test pulse and the predetermined pulse width of the reference pulse by a timing gain and thereby obtaining a gained under-test pulse and a gained reference pulse, respectively; providing a count pulse for sampling the gained under-test pulse and the gained reference pulse by the integrated circuit, and thereby obtaining a first count number and a second count number, respectively; and estimating the under-test pulse width by using the predetermined pulse width, the first count number and the second count number. - View Dependent Claims (2, 3, 4, 5)
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6. A pulse width estimation device in an integrated circuit, the integrated circuit being configured to receive a reference pulse generated by an external circuit system, the reference pulse having a predetermined pulse width, the pulse width estimation device comprising:
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an under-test pulse generator configured to generate an under-test pulse with an under-test pulse width; a processing unit, in communication with the under-test pulse generator and the circuit system, configured to receive the under-test pulse and the reference pulse, multiply the under-test pulse width of the under-test pulse and the predetermined pulse width of the reference pulse by a timing gain and thereby obtaining a gained under-test pulse and a gained reference pulse, respectively; a count pulse generator configured to generate a count pulse; and a counting unit, in communication with the processing unit and the count pulse generator, configured to sample the gained under-test pulse and the gained reference pulse by using the count pulse and thereby obtaining a first count number and a second count number, respectively, for estimating the under-test pulse width. - View Dependent Claims (7, 8, 9, 10)
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11. A pulse width estimation device arranged in an integrated circuit, the integrated circuit being configured to receive a reference pulse generated by an external circuit system, the reference pulse having a predetermined pulse width, the pulse width estimation device comprising:
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an under-test pulse generator configured to generate an under-test pulse with an under-test pulse width; a processing unit, in communication with the under-test pulse generator and the external circuit system, configured to receive the under-test pulse and the reference pulse, multiply the under-test pulse width of the under-test pulse and the predetermined pulse width of the reference pulse by a timing gain and thereby obtaining a gained under-test pulse and a gained reference pulse, respectively; a count pulse generator configured to generate a count pulse; and a counting unit, in communication with the processing unit and the count pulse generator, configured to sample the gained under-test pulse and the gained reference pulse by using the count pulse and thereby obtaining a first count number and a second count number, respectively, and transmit the first count number and the second count number to the circuit system, wherein the circuit system is configured to calculate the under-test pulse width by using the predetermined pulse width, the first count number and the second count number. - View Dependent Claims (12, 13, 14, 15)
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Specification