1. A termination structure for a superconducting cable, comprising:
a first tube including a conductive rod therein to form a room temperature section; and
a second tube including a conductive rod therein to form a temperature gradient section;
wherein the first tube and the second tube are directly joined by a spacer as a seal between the room temperature section and the temperature gradient section,
the spacer comprises a conductive connector passing therethrough and contacting the conductive rods inside the first and the second tubes for electrical connection therebetween, and
the first and second tubes are joined to be separable from each other.
2. The termination structure according to claim 1, wherein:
flange portions are provided on outer peripheral surfaces of the first and second tubes;
end portions of the spacer are inserted into the flange portions; and
the first and second tubes and the spacer are fastened by a fastening member.
3. The termination structure according to claim 1, further comprising:
a hand hole member configured to separate and assemble the conductive rods, the hand hole member being formed on a side surface of the first tube.
4. The termination structure according to claim 2, further comprising:
a hand hole member configured to separate and assemble the conductive rods, the hand hole member being formed on a side surface of the first tube.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for implementing a Hyper Text Transfer Protocol HTTP-based streaming service, comprising:
receiving, by a server, a request from a client, and returning a response that carries a media presentation description file according to the request for the media presentation description file to the client;
setting up a time synchronization relationship between the server and the client; and
receiving, by the server, a uniform resource locator from the client, obtaining a corresponding media fragment file, and returning the media fragment file to the client for playing on the client, wherein the uniform resource locator is a uniform resource locator of a media fragment that is determined by the client and is required to be played, and is used by the client to request the media fragment file from the server.
2. The method according to claim 1, wherein:
the returning, by the server, the response that carries the media presentation description file according to the request for the media presentation description file to the client further comprises:
letting time of generating the media presentation description file be carried in the media presentation description file or in a Hyper Text Transfer Protocol HTTP header Last-Modified, and letting time of originating the response be carried in a Hyper Text Transfer Protocol HTTP header Date to notify the client.
3. The method according to claim 1, wherein:
the server generates the media presentation description file when a live play starts, wherein the media presentation description file describes basic information of media data that is to be generated.
4. The method according to claim 1, wherein the media presentation description file comprises:
a uniform resource locator template, wherein the template is used for the client to generate a uniform resource locator corresponding to a media fragment that is required to be played, and the uniform resource locator is used to indicate a location of a media fragment file that is required to be played.
5. The method according to claim 4, wherein:
the media presentation description file further comprises time length of the media fragment, wherein the time length of the media fragment is used for the client to determine, according to the time length of the media fragment, location information of the media fragment that is required to be played.
6. The method according to claim 1, wherein:
the media fragment file comprises a single media representation, or a combination of different media representations.
7. A method for implementing a Hyper Text Transfer Protocol HTTP-based streaming service, comprising:
sending, by a client, a request to a server, wherein the request is used for the server to return, according to the request, a response that carries a media presentation description file to the client;
setting up, by the client, a time synchronization relationship with the server;
determining, by the client, a uniform resource locator URL of a media fragment that is required to be played;
by the client, sending, to the server, the uniform resource locator corresponding to the media fragment that is required to be played, to request a media fragment file; and
receiving the media fragment file that is corresponding to the uniform resource locator and is returned by the server, and playing the media fragment file.
8. The method according to claim 7, further comprising:
using, by the client, a file sequence number that increases incrementally as a sequence number of a file that is to be obtained subsequently, replacing a variable in a uniform resource locator template with the sequence number to generate a uniform resource locator URL corresponding to a media fragment that is to be obtained, and requesting and obtaining subsequent media fragment files continuously.
9. The method according to claim 1, wherein:
the media presentation description file is generated by the server when a live play starts, and the media presentation description file describes basic information of media data that is to be generated.
10. The method according to claim 7, wherein:
according to current time of the server and live play start time, the client calculates a sequence number L of a latest media fragment file being played live, and assigns the file sequence number L to a local variable N that represents a sequence number of a file that is to be obtained, wherein L is obtained through:
L=int((T\u2212T0)Ts),
wherein
T is the current time of the server, T0 is the live play start time, Ts is time length of the media fragment, int( )is a rounding function, and int(x) represents a maximum integer not greater than x.
11. The method according to claim 10, wherein:
if the client specifies a past time T1 as start time of watching, server time corresponding to the local time is obtained through T2=T1\u2212\u0394T according to time offset \u0394T between the current time of the server and the local time, wherein T2 fulfills: T0\u2266T2\u2266T; a sequence number L\u2032 of the media fragment file that is watched starting from the past time T1 is calculated according to the formula L\u2032=int((T2\u2212T0)Ts), and the sequence number L\u2032 of the file is assigned to the local variable N.
12. The method according to claim 7, wherein the media presentation description file comprises:
a uniform resource locator template, wherein the template is used for the client to generate a uniform resource locator corresponding to a media fragment that is required to be played, and the uniform resource locator is used to indicate a location of a media fragment file that is required to be played.
13. The method according to claim 12, wherein the media presentation description file further comprises:
time length of the media fragment, wherein the time length of the media fragment is used for the client to determine, according to the time length of the media fragment, location information of the media fragment that is required to be played.
14. The method according to claim 7, wherein:
the media fragment file comprises a single media representation, or a combination of different media representations.