Wireless transmission device, display device and data transmission method and stream processing method thereof

A display device, comprising:

• a communication interface configured to perform communications with a wireless transmission device;
• a memory storing instructions;
• a signal processor;
• a display;
• and
• one or more processors communicatively coupled with the signal processor, the display, and the memory, wherein the one or more processors are configured to execute the instructions to:
• receive, using the communication interface from the wireless transmission device, guidance information indicating a plurality of different types of additional data comprised in analog content provided by an external device to the wireless transmission device;
• transmit, using the communication interface to the wireless transmission device, a selection signal indicating a selection of at least one type of additional data from among the plurality of different types of additional data comprised in the analog content;
• receive, using the communication interface from the wireless transmission device, a digital transport stream corresponding to the analog content comprising the selected additional data;
• store the received digital transport stream in the memory;
• control the signal processor to acquire a video signal, an audio signal, and additional information by decoding digital audio data, digital video data, and digital additional data, acquired from the digital transport stream;
• and
• control the display to output at least a part of the additional information together with the video signal based on a user input.

A data transmission method of a wireless transmission device, the data transmission method comprising:

• receiving analog data from an external device;
• acquiring analog audio data, analog video data, and analog additional data from the received analog;
• data, the analog additional data comprising a plurality of different types of additional data;
• converting the analog audio data, the analog video data, and the analog additional data, respectively, to digital audio data, digital video data, and digital additional data;
• transmitting, to at least one display device, guidance information indicating the plurality of different types of additional data comprised by the analog additional data;
• receiving, from the at least one display device, a selection signal indicating a selection of at least one of the plurality of different types of additional data;
• configuring a digital transport stream comprising a plurality of packets by separately packetizing the digital audio data, the digital video data, and the digital additional data corresponding to the selection of the at least one of the plurality of different types of additional data, respectively;
• and
• transmitting the digital transport stream to the at least one display device.