With reference to the options shown in
“First”, “second”, and the like mentioned in this application are not intended to indicate any order, quantity or importance, but are merely used to differentiate between components. Likewise, “a/an”, “one”, or the like is not intended to indicate a quantity limitation either, but is intended to indicate existing at least one. “Connection”, “l(fā)ink”, or the like is not limited to a physical or mechanical connection, but may include an electrical connection, whether direct or indirect.
A “module” mentioned in this application usually refers to a program or an instruction that is stored in a memory and can implement some functions. A “unit” mentioned in this specification usually refers to a functional structure divided based on logic. The “unit” may be implemented by only hardware, or implemented by a combination of software and hardware.
“A plurality of” mentioned in this application refers to two or more than two. The term “and/or” describes an association relationship for describing associated objects and represents that three relationships may exist. For example, A and/or B may represent the following three cases: Only A exists, both A and B exist, and only B exists. The character “/” generally indicates an “or” relationship between the associated objects.