Photoelectric selection signal control circuit, display apparatus, display method and control apparatus

A display device, comprising a control circuit, a display element, and a photoelectric selection signal control circuit,

• wherein the photoelectric selection signal control circuit comprises an output circuit and at least one signal control circuit, the signal control circuit is configured to output a comparison result signal under control of a selection signal and a lighting signal, and the output circuit is configured to output an output signal according to the comparison result signal;
• the control circuit is configured to generate the selection signal and output the selection signal to the signal control circuit of the photoelectric selection signal control circuit, and is configured to control the display element to display according to the output signal of the output circuit of the photoelectric selection signal control circuit;
• and
• the at least one signal control circuit comprises a plurality of signal control circuits,
• the selection signal selects and turns on an input circuit of only one signal control circuit of the plurality of signal control circuits at any moment, and
• the control circuit is configured to determine whether to start a decoding step at a current moment according to the output signal of the photoelectric selection signal control circuit, and is configured to continuously generate and output the selection signal to an input circuit selected at the current moment and continuously receive and decode the output signal to obtain authentication information and to enable a display control function in a case where the decoding step is started.

A control device, comprising:

• a trigger circuit, configured to receive a trigger instruction from a user and send out a trigger signal;
• a signal generation circuit, configured to generate a lighting signal based on a preset code according to the trigger signal;
• and
• a signal sending circuit, configured to transmit the lighting signal to a photosensitive circuit of a photoelectric selection signal control circuit,
• wherein the lighting signal comprises a preamble code, a synchronization code, a data code, and a verification code,
• the preamble code is used to start a decoding step, the synchronization code is used to provide synchronization of timing, the data code comprises data information to be transmitted, and the verification code is used to verify whether transmitted data information is correct.