Video data transmission device, reception device, and transmission and reception system

A receiving device, comprising:

• a receiver configured to receive video data including active data and sync data, the video data being transmitted by a transmitting device based on a data enable (DE)DE signal;
• a detector configured to, in synchronization with a reference clock, detect from among the received video data:
• blank start (BS) data that the transmitting device transmitted in a first cycle of the reference clock, the first cycle being positioned immediately after a timing at which the DE signal transitions from a first level to a second level,
• blank end (BE) data that the transmitting device transmitted in a second cycle of the reference clock, the second cycle being positioned immediately before a timing at which the DE signal transitions from the second level to the first level, and
• pre blank end (PRE_BE) data that the transmitting device transmitted in a third cycle of the reference clock, the third cycle being positioned at the second level of the DE signal and being positioned for N1 cycles before the second cycle, where N1 is constant;
• a BE reproducer configured to obtain a prediction cycle of the BE data that is positioned for N1 cycles after a detection cycle of the PRE_BE data obtained by the detector, and reproduce the BE data in a detection cycle of the BE data by the detector or in the prediction cycle of the BE data, where N1 is constant;
• a BS reproducer configured to obtain a prediction cycle of the BS data that is positioned for N2 cycles after a reproduction cycle of the BE data obtained by the BE reproducer, where N2 is constant, and reproduce the BS data in a detection cycle of the BS data by the detector or in the prediction cycle of the BS data;
• a DE signal reproducer configured to reproduce the DE signal based on the reproduction cycle of the BE data obtained by the BE reproducer and the reproduction cycle of the BS data obtained by the BS reproducer;
• and
• a separator configured to, based on the DE signal reproduced by the DE signal reproducer, separate the video data received by the receiver into the active data that the transmitting device transmitted during a period in which the DE signal is at the first level and the sync data that the transmitting device transmitted during a period in which the DE signal is at the second level.

A transmitting and receiving system, comprising a transmitting device and a receiving device,

• wherein the transmitting device configured to transmit video data including active data and sync data, comprises:
• an instructor configured to, in synchronization with a reference clock and based on a data enabled (DE) signal that indicates respective sending periods of the active data and the sync data, indicate
• a first cycle of the reference clock, the first cycle being positioned immediately after a timing at which the DE signal transitions from a first level to a second level,
• a second cycle of the reference clock, the second cycle being positioned immediately before a timing at which the DE signal transitions from the second level to the first level, and
• a third cycle of the reference clock, the third cycle being positioned in which the DE signal is at the second level and is positioned for N1 cycles before the second cycle, where N1 is constant;
• and
• a driver configured toto:
• transmit blank start (BS) data at the first cycle,
• transmit blank end (BE) data at the second cycle,
• transmit pre blank end (PRE_BE) data at the third cycle,
• transmit the active data during a period in which the DE signal is at the first level, and
• transmit the sync data during a period in which the DE signal is at the second level;
• and
• wherein the receiving device comprises:
• a receiver configured to receive the video data including the active data and the sync data, the video data being transmitted by the transmitting device based on the DE signal;
• a detector configured to, in synchronization with a reference clock, detect from among the received video data:
• BS data that the transmitting device transmitted in a first cycle of the reference clock, the first cycle being positioned immediately after a timing at which the DE signal transitions from a first level to a second level,
• BE data that the transmitting device transmitted in a second cycle of the reference clock, the second cycle being positioned immediately before a timing at which the DE signal transitions from the second level to the first level, and
• PRE_BE data that the transmitting device transmitted in a third cycle of the reference clock, the third cycle being positioned at the second level of the DE signal and being positioned for N1 cycles before the second cycle, where N1 is constant;
• a BE reproducer configured to obtain a prediction cycle of the BE data that is positioned for N1 cycles after a detection cycle of the PRE_BE data obtained by the detector, and reproduce the BE data in a detection cycle of the BE data by the detector or in the prediction cycle of the BE data, where N1 is constant;
• a BS reproducer configured to obtain a prediction cycle of the BS data that is positioned for N2 cycles after a reproduction cycle of the BE data obtained by the BE reproducer, where N2 is constant, and reproduce the BS data in a detection cycle of the BS data by the detector or in the prediction cycle of the BS data;
• a DE signal reproducer configured to reproduce the DE signal based on the reproduction cycle of the BE data obtained by the BE reproducer and the reproduction cycle of the BS data obtained by the BS reproducer;
• and
• a separator configured to, based on the DE signal reproduced by the DE signal reproducer, separate the video data received by the receiver into the active data that the transmitting device transmitted during a period in which the DE signal is at the first level and the sync data that the transmitting device transmitted during a period in which the DE signal is at the second level.