Video processing system, video output apparatus, video display apparatus and video processing method

1. A video processing system, comprising:

a video output device; and

a video display device connected to the video output device so that bidirectional communication is possible, wherein

the video output device comprises:

a first resolution converter configured to perform resolution conversion processing for converting video data with a first resolution into video data with a second resolution higher than the first resolution, at a first level indicating performance of the resolution conversion processing;

a first reception module configured to receive a second level indicating performance of resolution conversion processing of the video display device from the video display device through the bidirectional communication;

a first determination module configured to determine whether the first level is higher than the second level; and

a first transmission module configured to transmit the video data to the video display device, and

the first resolution converter is configured to convert the video data with the first resolution into the video data with the second resolution when the first level is higher than the second level, and

the video display device comprises:

a second reception module configured to receive the video data from the video output device;

a second resolution converter configured to perform resolution conversion processing for converting the video data with the first resolution into the video data with the second resolution at the second level; and

a display configured to display the video data with the second resolution, and

the second resolution converter is configured not to perform the resolution conversion processing when the video data with the second resolution is received.

2. A video output device, comprising:

a resolution converter configured to perform resolution conversion processing for converting video data with a first resolution into video data with a second resolution higher than the first resolution, at a first level indicating performance of the resolution conversion processing;

a reception module configured to receive, from a video display device connected to the video output device so that bidirectional communication is possible, a second level indicating performance of resolution conversion processing of the video display device through the bidirectional communication;

a determination module configured to determine whether the first level is higher than the second level; and

a transmission module configured to transmit the video data to the video display device, wherein

the resolution converter is configured to convert the video data with the first resolution into the video data with the second resolution when the first level is higher than the second level.

3. The video output device of claim 2 , wherein

when the first level is not higher than the second level, the resolution converter is configured not to perform resolution conversion processing on the video data with the first resolution, and

the transmission module is configured to transmit the video data with the first resolution to the video display device.

4. The video output device of claim 2 , wherein

the reception module is configured to receive second vendor information indicating a manufacturer of the video display device from the video display device through the bidirectional communication, and

the determination module is configured to determine whether the second vendor information matches first vendor information indicating a manufacturer of the video output device and determine, when the second vendor information matches the first vendor information, whether the first level is higher than the second level.

5. The video output device of claim 4 , wherein when the second vendor information does not match the first vendor information, the resolution converter is configured to convert the video data with the first resolution into the video data with the second resolution.

6. The video output device of claim 2 , wherein when the resolution converter has not performed the resolution conversion processing, the transmission module is configured to transmit notification indicating that resolution conversion processing has not been performed on the video data to the video display device thorough the bidirectional communication.

7. The video output device of claim 2 , wherein

the first level comprises a plurality of first levels,

the second level comprises a plurality of second levels,

the resolution converter is configured to perform the resolution conversion processing at the plurality of first levels,

the video display device is configured to perform the resolution conversion processing at the plurality of second levels,

the reception module is configured to receive a highest second level among the plurality of second levels from the video display device through the bidirectional communication,

the determination module is configured to determine whether a highest first level among the plurality of first levels is higher than the highest second level, and

the resolution converter is configured to convert the video data with the first resolution into the video data with the second resolution when the highest first level is higher than the highest second level.

8. A video processing method performed in a video output device and a video display device connected to the video output device so that bidirectional communication is possible,

the video output device configured to perform resolution conversion processing for converting video data with a first resolution into video data with a second resolution higher than the first resolution, at a first level indicating performance of the resolution conversion processing, and

the video display device configured to perform resolution conversion processing for converting the video data with the first resolution into the video data with the second resolution, at a second level indicating performance of the resolution conversion processing, and

the video processing method comprising:

receiving, by the video output device, the second level from the video display device through the bidirectional communication;

determining, by the video output device, whether the first level is higher than the second level;

converting, by the video output device, the video data with the first resolution into the video data with the second resolution when the first level is higher than the second level;

transmitting, by the video output device, the video data to the video display device;

receiving, by the video display device, the video data from the video output device; and

when the video data with the second resolution is received, displaying, by the video display device, the video data with the second resolution without performing the resolution conversion processing.