A visual interface system, comprising: an operation apparatus; and a passive matrix display apparatus, comprising: a first substrate; a display surface located at a first side of the first substrate; and a second substrate disposed opposite to the first substrate and located at a second side of the first substrate relatively opposite to the first side; configured so that, when the operation apparatus is operated on the display surface of the passive matrix display apparatus, an encoded signal is coupled to the operation apparatus from the passive matrix display apparatus, and the encoded signal is received and processed by the operation apparatus to generate a transmission signal, said transmission signal including at least touch coordinate information; wherein the passive matrix display apparatus has a plurality of electrodes disposed on the first substrate or the second substrate, and the encoded signal is applied to the electrode and is then capacitively or inductively coupled to the operation apparatus from the electrode, the encoded signal including a time reference point to identify the electrode that transmits the encoded signal. an operation apparatus; and a passive matrix display apparatus, comprising: a first substrate; a display surface located at a first side of the first substrate; and a second substrate disposed opposite to the first substrate and located at a second side of the first substrate relatively opposite to the first side; configured so that, when the operation apparatus is operated on the display surface of the passive matrix display apparatus, an encoded signal is coupled to the operation apparatus from the passive matrix display apparatus, and the encoded signal is received and processed by the operation apparatus to generate a transmission signal, said transmission signal including at least touch coordinate information; wherein the passive matrix display apparatus has a plurality of electrodes disposed on the first substrate or the second substrate, and the encoded signal is applied to the electrode and is then capacitively or inductively coupled to the operation apparatus from the electrode, the encoded signal including a time reference point to identify the electrode that transmits the encoded signal. a first substrate; a display surface located at a first side of the first substrate; and a second substrate disposed opposite to the first substrate and located at a second side of the first substrate relatively opposite to the first side; configured so that, when the operation apparatus is operated on the display surface of the passive matrix display apparatus, an encoded signal is coupled to the operation apparatus from the passive matrix display apparatus, and the encoded signal is received and processed by the operation apparatus to generate a transmission signal, said transmission signal including at least touch coordinate information; wherein the passive matrix display apparatus has a plurality of electrodes disposed on the first substrate or the second substrate, and the encoded signal is applied to the electrode and is then capacitively or inductively coupled to the operation apparatus from the electrode, the encoded signal including a time reference point to identify the electrode that transmits the encoded signal.