Signal adjusting device, signal adjusting method, and test equipment

A signal adjusting method comprising:

• performing a level adjustment to an acquired first signal, to generate at least one level signal;
• comparing the at least one level signal with a preset reference signal to obtain a comparison result, and generating a corresponding feedback signal, based on the comparison result;
• and
• outputting, as an adjusted signal, the level signal corresponding to the feedback signal;
• wherein the comparing the at least one level signal with the preset reference signal to obtain the comparison result, and generating the corresponding feedback signal, based on the comparison result comprises:
• determining a primary difference between the at least one level signal and the preset reference signal;
• determining that the primary difference is greater than a first preset threshold;
• using the at least one level signal corresponding to the primary difference as a primary feedback signal, in response to determining that the primary difference is greater than the first preset threshold;
• determining a secondary difference between the primary feedback signal and an acquired second signal;
• and
• generating the corresponding feedback signal based on the secondary difference.

A test equipment, comprising:

• a display screen;
• a driving circuit, configured to drive the display screen;
• and
• a signal adjusting device, comprising:
• a level controller, at least one level circuit, a comparison circuit, and a selecting circuit;
• wherein the at least one level circuit is electrically connected with the selecting circuit;
• the level controller is electrically connected with the comparison circuit through the at least one level circuit, and is configured to perform a level adjustment to a first signal, so as to generate at least one level signal, and the generated at least one level signal is outputted by the at least one level circuit;
• the comparison circuit is electrically connected to the selecting circuit, and is configured to:
• compare the at least one level signal with a preset reference signal to obtain a comparison result;
• and
• generate and output a corresponding feedback signal to the selecting circuit, based on the comparison result;
• the selecting circuit is configured to output, as an adjusted signal, the level signal corresponding to the feedback signal,
• the selecting circuit comprises a switch controller and a switch circuit;
• the at least one level circuit is electrically connected with the switch circuit;
• the comparison circuit is electrically connected with the switch controller, and is configured to output the feedback signal to the switch controller;
• and
• the switch controller is electrically connected to the switch circuit, and is configured to turn on the switch circuit corresponding to the feedback signal, so as to output, as the adjusted signal, the level signal corresponding to the feedback signal;
• the comparison circuit comprises a first comparator and a second comparator,
• the first comparator is electrically connected with the at least one level circuit;
• the first comparator is electrically connected with the second comparator the second comparator is electrically connected with the switch controller,
• the first comparator is configured to:
• determine a primary difference between the level signal and the preset reference signal;
• determine the primary difference is greater than the first preset threshold;
• and
• output, as a primary feedback signal, the level signal corresponding to the primary difference, in response to determining that the primary difference is greater than the first preset threshold, and
• the second comparator is configured to:
• determine a secondary difference between a second signal and the primary feedback signal;
• and
• generate and output the corresponding feedback signal to the switch controller, based on the secondary difference;
• the signal adjusting device is configured to acquire the first signal from the driving circuit, and to output the adjusted signal to the display screen, and
• the first signal is sampled from a signal output port of the driving circuit.