Device and method for transmitting video signals, and system for playing video signals

A system for playing video signals, comprising a display and the device for transmitting video signals, the device for transmitting video signals comprising:

• two or more signal channels respectively connected to input signal sources, wherein the signal channel comprises two or more of a DisplayPort channel, a high definition multimedia channel, a digital video channel, and a video graphics array channel;
• two or more trigger switch units respectively disposed corresponding to the signal channels, wherein when the signal channel is the DisplayPort channel, the high definition multimedia channel, or the digital video channel, the trigger switch unit comprises a hot plug electronic switch, and when the signal channel is the video graphics array channel, the trigger switch unit comprises a plurality of sub-switches corresponding to the respective color channels;
• a switch control unit configured to determine a target signal channel according to a channel selection signal, and to turn on the trigger switch unit corresponding to the target signal channel and to turn off the other trigger switch units, wherein, when the switch control unit turns on the trigger switch unit corresponding to the target signal channel and turns off the other trigger switch units corresponding to the other signal channels, each of the signal channel directly determines whether the signal channel needs to be put into operation or standby through a hot plug detection of the hot plug electronic switch or through states of the sub-switches;
• and
• a signal source control unit disposed at each of the input signal sources, and configured to control the operation and standby of the input signal source according to the turning on and turning off of the trigger switch unit of the signal channel connected to the input signal source, wherein the signal source control unit is configured to control the input signal source to be in the operation when the input signal source receives a signal that the trigger switch unit is the turning on, and to control the input signal source to be in the standby when the input signal source receives a signal that the trigger switch unit is the turning off, so as to reduce power consumption.

A method for transmitting video signals for a device for transmitting video signals, wherein the device for transmitting video signals, comprises:

• two or more signal channels respectively connected to input signal sources, wherein the signal channel comprises two or more of a DisplayPort channel, a high definition multimedia channel, a digital video channel, and a video graphics array channel;
• two or more trigger switch units respectively disposed corresponding to the signal channels, wherein when the signal channel is the DisplayPort channel, the high definition multimedia channel, or the digital video channel, the trigger switch unit comprises a hot plug electronic switch, and when the signal channel is the video graphics array channel, the trigger switch unit comprises a plurality of sub-switches corresponding to the respective color channels;
• a switch control unit configured to determine a target signal channel according to a channel selection signal, and to turn on the trigger switch unit corresponding to the target signal channel and to turn off the other trigger switch units, wherein, when the switch control unit turns on the trigger switch unit corresponding to the target signal channel and turns off the other trigger switch units corresponding to the other signal channels, each of the signal channel directly determines whether the signal channel needs to be put into operation or standby through a hot plug detection of the hot plug electronic switch or through states of the sub-switches;
• and a signal source control unit disposed at each of the input signal sources, and configured to control the operation and standby of the input signal source according to the turning on and turning off of the trigger switch unit of the signal channel connected to the input signal source, wherein the signal source control unit is configured to control the input signal source to be in the operation when the input signal source receives a signal that the trigger switch unit is the turning on, and to control the input signal source to be in the standby when the input signal source receives a signal that the trigger switch unit is the turning off, so as to reduce power consumption, and the method comprises:
• determining a target signal channel according to a channel selection signal, turning on the trigger switch unit corresponding to the target signal channel, and turning off the other trigger switch units;
• and
• controlling the operation and standby of each input signal source connected to each of the signal channels according to turning on and turning off of each of the trigger switch units corresponding to the signal channels.