If these methods are closely related in terms of technological innovation, you can file a joint application and write these methods into multiple independent claims of an invention patent. Input methods can only apply for invention patents. There are currently a large number of applications and authorizations for input method patents. However, except for a few giant companies that are used to build technical barriers, there are not many other individual applications that have been converted into large-scale applications. Before applying, it is necessary to measure whether they can be converted.