Patent ID: 11948650
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A testing method performed by a testing device comprising a first sampling circuit, a second sampling circuit and an analysis circuit, the method comprising:
receiving, by the first sampling circuit and the second sampling circuit, a to-be-tested pulse signal;
generating, by the first sampling circuit and the second sampling circuit, a first sampled signal and a second sampled signal according to the to-be-tested pulse signal respectively; and
obtaining, by the analysis circuit, the first sampled signal and the second sampled signal, and obtaining a width of the to-be-tested pulse signal according to the first sampled signal and the second sampled signal,
wherein the second sampled signal and the first sampled signal have a phase difference, the phase difference being equal to a pulse width of the to-be-tested pulse signal,
wherein generating, by the first sampling circuit, the first sampled signal comprises:
sampling, by a first temporary storage unit of the first sampling circuit, a first to-be-sampled signal in response to the to-be-tested pulse signal so as to generate a first temporary storage signal, wherein a triggering type of the first temporary storage unit is edge triggering, and an edge of the first temporary storage signal corresponds to a first edge of the to-be-tested pulse signal; and
outputting, by the first temporary storage unit, the first temporary storage signal as the first sampled signal, and
wherein the second sampling module comprises a transmission gate and a second temporary storage unit.