System time frequency and time information

1. A method of a reception apparatus for receiving transmission frames, the method comprising:

receiving, by circuitry of the reception apparatus, the transmission frames, each of the transmission frames including a bootstrap, a preamble, and a payload; and

determining, by the circuitry, an absolute point of time at which a first symbol of the bootstrap in one of the transmission frames was transmitted based on first time information included in the preamble of the one of the transmission frames, wherein

the one of the transmission frames is included in a plurality of transmission frames, and

the one of the transmission frames is the only transmission frame of the plurality of transmission frames that includes the first time information.

2. The method according to claim 1 , wherein the absolute point of time indicates a time at which a first symbol of the bootstrap in a first one of the transmission frames was transmitted.

3. The method according to claim 2 , wherein the first symbol is aligned with a one millisecond boundary on which the first one of the transmission frames is transmitted.

4. The method according to claim 1 , wherein the step of receiving the transmission frames comprises:

receiving a digital television broadcast signal.

5. The method according to claim 1 , wherein sampling frequencies of the preamble and the payload of each of the transmission frames are the same.

6. The method according to claim 1 , wherein the first time information represents time with respect to Jan. 1, 1970.

7. The method according to claim 1 , wherein the first time information includes second information.

8. The method according to claim 7 , wherein the first time information includes millisecond information.

9. The method according to claim 8 , wherein the first time information includes microsecond information.

10. The method according to claim 9 , wherein the first time information includes nanosecond information.

11. The method according to claim 1 , wherein the first time information includes millisecond information.

12. A non-transitory computer-readable medium storing instructions which when executed by a computer cause the computer to perform a method for receiving transmission frames, the method comprising:

receiving the transmission frames, each of the transmission frames including a bootstrap, a preamble, and a payload; and

determining an absolute point of time at which a first symbol of the bootstrap in one of the transmission frames was transmitted based on first time information included in the preamble of the one of the transmission frames, wherein

the one of the transmission frames is included in a plurality of transmission frames, and

the one of the transmission frames is the only transmission frame of the plurality of transmission frames that includes the first time information.

13. A reception apparatus, comprising:

circuitry configured to

receive transmission frames, each of the transmission frames including a bootstrap, a preamble, and a payload; and

determine an absolute point of time at which a first symbol of the bootstrap in one of the transmission frames was transmitted based on first time information included in the preamble of the one of the transmission frames, wherein

the one of the transmission frames is included in a plurality of transmission frames, and

the one of the transmission frames is the only transmission frame of the plurality of transmission frames that includes the first time information.

14. The reception apparatus according to claim 13 , wherein the absolute point of time indicates a time at which a first symbol of the bootstrap in a first one of the transmission frames was transmitted.

15. The reception apparatus according to claim 14 , wherein the first symbol is aligned with a one millisecond boundary on which the first one of the transmission frames is transmitted.

16. The reception apparatus according to claim 13 , wherein the circuitry is configured to receive a digital television broadcast signal that includes the stream of transmission frames.

17. The reception apparatus according to claim 13 , wherein sampling frequencies of the preamble and the payload of each of the transmission frames are the same.

18. The reception apparatus according to claim 13 , wherein the first time information represents time with respect to Jan. 1, 1970.

19. A method of an information providing apparatus for providing a stream of transmission frames, comprising:

generating, by circuitry of the information providing apparatus, first time information that indicates an absolute point of time at which a first symbol of a bootstrap in one of the transmission frames was transmitted;

generating the transmission frames, the generated first time information being included in the preamble of one of the transmission frames; and

transmitting, by the circuitry, the transmission frames, wherein

each of the plurality of transmission frames includes a bootstrap, a preamble, and a payload,

the one of the transmission frames is included in a plurality of transmission frames, and

the one of the transmission frames is the only transmission frame of the plurality of transmission frames that includes the first time information.

20. The method according to claim 19 , wherein the absolute point of time indicates a time at which a first symbol of the bootstrap in a first one of the transmission frames is transmitted.

21. The method according to claim 20 , wherein the first symbol is aligned with a one millisecond boundary on which the first one of the transmission frames is transmitted.

22. The method according to claim 19 , wherein the first time information represents time with respect to Jan. 1, 1970.