TRANSMITTING APPARATUS, RECEIVING APPARATUS, SYSTEM, AND METHOD USED THEREIN
A transmitting apparatus for transmitting transmission data to a receiving apparatus is disclosed which includes: means for obtaining apparatus information of the receiving apparatus; a source of video data and its auxiliary data; means for determining whether or not to synthesize the video data and the auxiliary data with each other, based on the obtained apparatus information; means for synthesizing, according to the above determination, the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate the transmission data, wherein the frame data is included in a video data arranging area of the video data; and means for transmitting the transmission data to the receiving apparatus. Furthermore, a receiving apparatus is also disclosed which extracts the frame data from the video data arranging area of received data.
1 . A transmitting apparatus for transmitting transmission data to a receiving apparatus, the transmitting apparatus comprising:
means for obtaining apparatus information of the receiving apparatus; a source of video data and its auxiliary data;
means for determining whether or not to synthesize the video data and the auxiliary data with each other, based on the obtained apparatus information;
means for synthesizing, according to the above determination, the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate the transmission data, wherein the frame data is included in a video data arranging area of the video data; and
means for transmitting the transmission data to the receiving apparatus.
2 . The transmitting apparatus according to claim 1 , wherein the synthesizing means provides an area including the frame data in the video data arranging area.
3 . The transmitting apparatus according to claim 2 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
the area including the frame data is an active pixel period which is additionally provided in a horizontal scanning line period within a vertical blanking interval.
4 . The transmitting apparatus according to claim 1 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
the synthesizing means replaces part of the video data, said part being arranged in at least one predetermined active pixel period of a horizontal scanning line period, with the frame data.
5 . The transmitting apparatus according to claim 4 , wherein pixels replaced with the frame data are positioned at an outer edge of the video data arranging area.
6 . The transmitting apparatus according to claim 1 , wherein the synthesizing means increases the number of bits of pixel data which indicates color of each pixel of the video data, and stores the frame data in the added bits.
7 . A transmitting apparatus for transmitting transmission data to a receiving apparatus, the transmitting apparatus comprising:
a source of video data and its auxiliary data;
a data synthesizer for synthesizing the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate the transmission data, wherein the frame data is included in a video data arranging area of the video data;
a CPU;
a transmitter
wherein:
the CPU is configured to:
obtain apparatus information of the receiving apparatus;
determine whether or not to synthesize the video data and the auxiliary data with each other, based on the obtained apparatus information; and
make the transmitter transmit the transmission data generated by the data synthesizer to the receiving apparatus when it is determined to synthesize the video data and the auxiliary data.
8 . The transmitting apparatus according to claim 7 , wherein the data synthesizer includes:
a clock generator for generating a clock signal in which one period corresponds to one pixel;
a pixel counter for performing counting of the clock signal so as to generate a horizontal synchronization signal;
a line counter for performing counting of the horizontal synchronization signal so as to generate a vertical synchronization signal;
a data arranging unit for performing counting of the clock signal and the horizontal synchronization signal so as to arrange the transmission data in the video data arranging area; and
a data writer configured by the CPU which inputs the video data and the auxiliary data into the data arranging unit.
9 . The transmitting apparatus according to claim 7 , wherein:
the auxiliary data is a time code of the video data; and
the source of the auxiliary data is configured by the CPU which computes the time code based on the frame rate of the video data.
10 . The transmitting apparatus according to claim 7 , wherein when the data synthesizer generates the transmission data, the data synthesizer provides an area including the frame data in the video data arranging area.
11 . The transmitting apparatus according to claim 10 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
the area including the frame data is an active pixel period which is additionally provided in a horizontal scanning line period within a vertical blanking interval.
12 . The transmitting apparatus according to claim 7 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
when the data synthesizer generates the transmission data, the data synthesizer replaces part of the video data, said part being arranged in at least one predetermined active pixel period of a horizontal scanning line period, with the frame data.
13 . The transmitting apparatus according to claim 12 , wherein pixels replaced with the frame data are positioned at an outer edge of the video data arranging area.
14 . The transmitting apparatus according to claim 7 , wherein when the data synthesizer generates the transmission data, the data synthesizer increases the number of bits of pixel data which indicates color of each pixel of the video data, and stores the frame data in the added bits.
15 . The transmitting apparatus according to claim 7 , wherein the transmission data is based on the HDMI standard.
16 . A receiving apparatus comprising:
means for receiving data which includes video data and frame data which is arranged in a video data arranging area of each frame of the video data, and is associated with the frame;
means for extracting the frame data from the video data arranging area;
means for synthesizing the video data with the frame data for each frame; and
means for outputting the synthesized video data and frame data.
17 . The receiving apparatus according to claim 16 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
the extracting means extracts the frame data, which is included in the active pixel periods, and generates video data, from which each active pixel period from which the frame data has been extracted is removed.
18 . The receiving apparatus according to claim 16 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
the extracting means extracts the frame data included in at least one predetermined active pixel period of the video data.
19 . The receiving apparatus according to claim 18 , wherein pixels from which the frame data is extracted are positioned at an outer edge of the video data arranging area.
20 . The receiving apparatus according to claim 16 , wherein the extracting means extracts the frame data included in predetermined bits of pixel data which indicates color of each pixel of the video data, and generates video data from which the predetermined bits are removed.
21 . A receiving apparatus comprising:
a receiver for receiving data which includes video data and frame data which is arranged in a video data arranging area of each frame of the video data, and is associated with the frame;
a CPU; and
an output unit for outputting the synthesized video data and frame data, wherein the CPU is configured to:
extract the frame data from the video data arranging area; and
synthesize the video data and the frame data for each frame.
22 . The receiving apparatus according to claim 21 , wherein:
the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
when extracting the frame data, the CPU extracts the frame data included in the active pixel periods, and generates video data, from which each active pixel period from which the frame data has been extracted is removed.
23 . The receiving apparatus according to claim 21 , wherein: the video data arranging area is active pixel periods in a plurality of horizontal scanning line periods; and
when extracting the frame data, the CPU extracts the frame data included in at least one predetermined active pixel period of the video data.
24 . The receiving apparatus according to claim 23 , wherein pixels from which the frame data is extracted are positioned at an outer edge of the video data arranging area.
25 . The receiving apparatus according to claim 21 , wherein when extracting the frame data, the CPU extracts the frame data included in predetermined bits of pixel data which indicates color of each pixel of the video data, and generates video data from which the predetermined bits are removed.
26 . A system having a transmitting apparatus and a receiving apparatus which is connected to the transmitting apparatus, wherein:
the transmitting apparatus comprises:
means for obtaining apparatus information of the receiving apparatus; a source of video data and its auxiliary data;
means for determining whether or not to synthesize the video data and the auxiliary data with each other, based on the obtained apparatus information;
means for synthesizing, according to the above determination, the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate transmission data, wherein the frame data is included in a video data arranging area of the video data; and
means for transmitting the transmission data to the receiving apparatus; and the receiving apparatus comprises:
means for receiving the transmission data;
means for extracting the frame data from the video data arranging area;
means for synthesizing the video data with the frame data for each frame; and
means for outputting the synthesized video data and frame data.
27 . A method for transmitting transmission data to a receiving apparatus, the method comprising the steps of:
obtaining apparatus information of the receiving apparatus;
determining whether or not to synthesize supplied video data and auxiliary data with each other, based on the obtained apparatus information;
synthesizing, according to the above determination, the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate the transmission data, wherein the frame data is included in a video data arranging area of the video data; and
transmitting the transmission data to the receiving apparatus.
28 . A method comprising the steps of:
receiving data which includes video data and frame data which is arranged in a video data arranging area of each frame of the video data, and is associated with the frame;
extracting the frame data from the video data arranging area;
synthesizing the video data with the frame data for each frame; and
outputting the synthesized video data and frame data.