2results about How to "Erasure implementation" patented technology

This invention discloses a fingerprint module factory testing method, device, and computer-readable storage medium. The method includes: creating an initial password verification factor for the device in the fingerprint module's factory testing mode; setting the device's password to a preset keystore based on the initial password verification factor; when the device's password is successfully set, recording a test value of 1 through a corresponding system attribute; verifying the initial password verification factor and the keystore to obtain verification response body parameters; if the verification response body parameters are not empty, obtaining the verification token of the verification response body, and using the verification token to enable fingerprint verification of the device. This provides an efficient fingerprint module factory testing scheme, greatly simplifying the testing steps for fingerprint modules in smart devices, reducing labor and time costs, and improving productivity.

The invention belongs to the technical field of liquid crystal writing device erasing, and particularly discloses a method and system for improving the erasing voltage of a liquid crystal writing device, and the method comprises the steps: applying a first voltage V1 to all conductive areas on a first conductive layer, and applying a second voltage V2 to all conductive areas on a second conductive layer; driving outputs corresponding to all conductive areas on the first conductive layer are controlled to be in a high-resistance state, a second voltage V2 is kept to be applied to a conductive area at a set position on the second conductive layer, and a first voltage V1 is applied to the remaining conductive areas on the second conductive layer, the electric field of the corresponding position of the conductive area, where the second voltage V2 is applied, on the second conductive layer can be increased to be larger than the erasing starting voltage of the cholesteric liquid crystal, and therefore erasing of writing content at the corresponding position is achieved. On the premise that the original structure of the liquid crystal writing device is not damaged, the erasing voltage can be improved, and the service life of a product is prolonged.