1. An apparatus for rapidly heating and cooling plastic tubing to be formed, molded or welded, said apparatus comprising in combination:
a) a mold for the plastic tubing;
b) a spool supporting a coil for inductively heating said mold, said spool including an aperture for encircling said mold at a distance from said mold to define an air space about said mold;
c) a source of gas; and
d) a manifold for receiving the gas from said source of gas and for directing the gas through the space intermediate said mold and said spool after the plastic tubing has been heated to cause rapid dissipation of heat from said mold and cooling of said mold.
2. The apparatus as set forth in claim 1, including an RF generator for providing RF energy to said coil to inductively heat said mold.
3. The apparatus as set forth in claim 1 wherein said mold includes a center section generally coincident with the aperture in said spool, a first thermal choke on one side of said center section; a first heat sink extending from said first thermal choke, a second thermal choke on the other side of said center section and a second heat sink extending from said second thermal choke.
4. The apparatus as set forth in claim 3, including a passageway disposed in said mold for receiving and supporting the plastic tubing.
5. The apparatus as set forth in claim 2, wherein said manifold includes an annular outlet adapted to direct a flow of cooling gas about the exterior surface of said center section.
6. An apparatus for rapidly heating and cooling plastic tubing to be formed, molded or welded, said apparatus comprising in combination:
a) a mold for the plastic tubing;
b) a spool supporting a coil for inductively heating said mold, said spool including an aperture for encircling said mold at a distance from said mold to define an air space about said mold;
c) an RF generator for providing RF energy to said coil to inductively heat said mold;
d) a source of gas; and
e) a manifold for receiving the gas from said source of gas and for directing the gas through the space intermediate said mold and said spool after the plastic tubing has been heated to cause rapid dissipation of heat from said mold and cooling of said mold, said manifold including an annular outlet adapted to direct a flow of cooling gas about the exterior surface of said center section and an inlet for receiving the cooling gas, a cone shaped interior surface in fluid communication with said inlet, a cone disposed within and spaced apart from said interior surface to define said annular outlet for directing the cooling gas about said center section.
7. An apparatus for rapidly heating and cooling plastic tubing to be formed, molded or welded, said apparatus comprising in combination:
a) a mold for the plastic tubing, including a center section extending into said aperture of said spool, means for selectively repositioning said spool along said center section to provide a heat profile along said center section;
b) a spool supporting a coil for inductively heating said mold, said spool including an aperture for encircling said mold at a distance from said mold to define an air space about said mold;
c) a source of gas; and
d) a manifold for receiving the gas from said source of gas for directing the gas through the space intermediate said mold and said spool after the plastic tubing has been heated to cause rapid dissipation of heat from said mold and cooling of said mold.
8. The apparatus as set forth in claim 1, wherein said mold includes a passageway extending axially therethrough for receiving a mandrel to support a length of plastic tubing to be formed, molded or welded within said mold.
9. The apparatus as set forth in claim 3, wherein said manifold includes a plurality of inlets for receiving the cooling gas and a corresponding number of passageways for directing the cooling gas about said center section.
10. The apparatus as set forth in claim 1, wherein said mold is split into first and second parts to permit withdrawal of a formed, molded or welded length of plastic tubing upon lateral displacement of the first and second parts relative to one another and within said aperture of said spool.
11. An assembly for molding catheter tubing, said assembly comprising in combination;
a) a catheter mold;
b) a coil encircling said mold for heating said mold by induction;
c) a housing for supporting said mold and said coil;
d) an annular space disposed intermediate said mold and said coil; and
e) a manifold for directing a stream of air at least into said space for cooling said mold on completion of heating the mold.
12. The apparatus as set forth in claim 11, wherein said mold includes a passageway extending therethrough for receiving a mandrel to support the tubing within said mold.
13. The apparatus as set forth in claim 11, wherein said manifold includes an annular outlet for directing the stream of air into said space.
14. An assembly for molding catheter tubing, said assembly comprising in combination;
a) a catheter mold;
b) a coil encircling said mold for heating said mold by induction;
c) means for relocating said coil along a section of said mold to concentrate heating at a location along said section;
d) a housing for supporting said mold and said coil;
e) an annular space disposed intermediate said mold and said coil; and
f) a manifold for directing a stream of air at least into said space for cooling said mold on completion of heating the mold.
15. The apparatus as set forth in claim 11, wherein said mold includes a center section wherein the tubing is formed, molded or welded, a thermal choke disposed on each opposed side of said center section and a heat sink connected to each of said thermal chokes.
16. The apparatus as set forth in claim 15, wherein the exterior surface of said center section is slotted.
17. The apparatus as set forth in claim 15, wherein said center section is tapered.
18. The apparatus as set forth in claim 15, wherein at least one of said heat sinks is slotted.
19. An assembly for molding catheter tubing, said assembly comprising in combination;
a) a catheter mold, said mold including a center section wherein the tubing is formed, molded or welded, a thermal choke disposed on each of opposed sides of said center section and a heat sink connected to each of said thermal chokes, at least one of said heat sinks including passageways for increasing the surface area of said heat sink;
b) a coil encircling said mold for heating said mold by induction;
c) a housing for supporting said mold and said coil;
d) an annular space disposed intermediate said mold and said coil; and
e) a manifold for directing a stream of air at least into said space for cooling said mold on completion of heating the mold.
20. An induction heated apparatus for molding thermoplastic material, said apparatus comprising in combination:
a) a mold for forming, molding or welding the material;
b) a coil for inductively heating said mold;
c) a space disposed about said mold and intermediate said coil and said mold;
d) a manifold having at least one passageway adapted for channeling a flow of air into said space to cool said mold; and
e) a housing for supporting said mold and said manifold and for dissipating the air flow through said space.
21. The apparatus as set forth in claim 20, including a spool for supporting said coil, said spool including a central aperture defining said space between said spool and said mold.
22. An induction heated apparatus for molding thermoplastic material, said apparatus comprising in combination:
a) a mold for forming, molding or welding the material;
b) a coil for inductively heating said mold;
c) a spool for supporting said coil, said spool including a central aperture defining said space between said spool and said mold;
d) a space disposed about said mold and intermediate said coil and said mold;
e) a manifold having at least one passageway adapted for channeling a flow of air into said space to cool said mold;
f) a housing for supporting said mold and said manifold and for dissipating the air flow through said space; and
g) means for relocating said spool relative to said housing for concentrating induction heating of said mold at a predetermined location on said mold.
23. The apparatus as set forth in claim 20, said mold including a center section within which forming, molding or welding of the material occurs, a thermal choke disposed on each opposed side of said center section and a heat sink extending from each of said thermal chokes.
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 transmitting a broadcast signal, comprising:
a step of demultiplexing at least one or more input streams into a plurality of DPs (Data Pipes), wherein the step of demultiplexing at least one or more input streams comprises:
a step of dividing the input stream into a plurality of DPs in which data of the plurality of DPs include one or more consecutive input packets,
a step of segmenting the data of the plurality of DPs into data units each having the same length as that of a payload of a BB frame,
a step of cyclic-shifting the input packets of the divided data,
a step of allocating the cyclic-shifted input packets to the payload of the BB frame, and
a step of inserting a header before the payload of the BB frame; and
a step of processing and transmitting the data of the plurality of DPs per DP.
2. The method of claim 1, wherein the step of cyclic-shifting the input packets of the divided data comprises:
a step of performing shifting so as to allocate, among the input packets of the segmented data, a first input packet being uncut to a beginning of the payload.
3. The method of claim 2, wherein the step of cyclic-shifting the input packets of the divided data further comprises:
a step of performing shifting so as to allocate, among the input packets of the shifted data, an input packet having its front portion cut out to the end of the payload.
4. The method of claim 1, wherein the step of processing and transmitting the data of the plurality of DPs per DP comprises:
a step of encoding data of the plurality of DPs per DP in accordance with a code rate,
a step of mapping the encoded data of the DP so as to generate at least one signal frame, and
a step of modulating data of the signal frame being generated by using an OFDM (Orthogonal Frequency Division Multiplexing) method and transmitting a broadcast signal including data of the modulated signal frame.
5. A method for receiving a broadcast signal, comprising:
a step of receiving a broadcast signal and processing data of a plurality of DPs being included in the received broadcast signal; and
a step of multiplexing the plurality of DPs to at least one or more output streams, wherein the step of multiplexing to at least one or more output streams comprises:
a step of gaining a new packet pointer by parsing a header of data of a DP, wherein the data of the DP includes at least one or more consecutive packets,
a step of cyclic-shifting packets of the data of the DP by using the new packet pointer, and
a step of merging the cyclic-shifted data into a consecutive output stream.
6. The method of claim 5, wherein the step of cyclic-shifting packets of the data of the DP comprises:
a step of relocating a packet fragment located at an end portion of the data of the DP having been shifted by a transmitting end back to a beginning of the data of the DP.
7. The method of claim 6, wherein the step of cyclic-shifting packets of the data of the DP further comprises:
a step of shifting the data of the DP having its packet fragment relocated.
8. The method of claim 5, wherein the step of receiving a broadcast signal and processing data of a plurality of DPs being included in the received broadcast signal comprises:
a step of receiving a broadcast signal and demodulating data of a signal frame included in the received broadcast signal by using an OFDM method,
a step of parsing a signal frame by de-mapping data of the plurality of DPs, and
a step of decoding the data of the plurality of DPs per DP in accordance with the code rate.
9. The method of claim 8, wherein the step of decoding the data of the plurality of DPs per DP in accordance with the code rate performs decoding by using data being included in a packet header of packets of the data of the DP.
10. An apparatus for transmitting a broadcast signal, comprising:
an input formatting module configured to demultiplex at least one or more input streams into a plurality of DPs (Data Pipes), wherein the input formatting module comprises:
a first block configured to divide the input stream into a plurality of DPs in which data of the plurality of DPs include one or more consecutive input packets,
a second block configured to segment the data of the plurality of DPs into data units each having the same length as that of a payload of a BB frame,
a third block configured to cyclic-shift the input packets of the divided data and to allocate the cyclic-shifted input packets to the payload of the BB frame, and
a fourth block configured to insert a header before the payload of the BB frame; and
a data processing module configured to process and transmit the data of the plurality of DPs per DP.
11. The apparatus of claim 10, wherein the third block is configured to perform shifting so as to allocate, among the input packets of the segmented data, a first input packet being uncut to a beginning of the payload.
12. The apparatus of claim 11, wherein the third block is configured to perform shifting so as to allocate, among the input packets of the shifted data, an input packet having its front portion cut out to the end of the payload.
13. The apparatus of claim 10, wherein the data processing module comprises:
an encoding block configured to encode data of the plurality of DPs per DP in accordance with a code rate,
a frame building block configured to map the encoded data of the DP so as to generate at least one signal frame, and
an OFDM block configured to modulate data of the signal frame being generated by using an OFDM (Orthogonal Frequency Division Multiplexing) method and to transmit a broadcast signal including data of the modulated signal frame.
14. An apparatus for receiving a broadcast signal, comprising:
a data processing module configured to receive a broadcast signal and to process data of a plurality of DPs being included in the received broadcast signal; and
an output processor module configured to multiplex the plurality of DPs to at least one or more output streams, wherein the output processor module comprises:
a first block configured to gain a new packet pointer by parsing a header of data of a DP, wherein the data of the DP includes at least one or more consecutive packets,
a second block configured to cyclic-shift packets of the data of the DP by using the new packet pointer, and
a third block configured to merge the cyclic-shifted data into a consecutive output stream.
15. The apparatus of claim 14, wherein the second block is configured to relocate a packet fragment located at an end portion of the data of the DP having been shifted by a transmitting end back to a beginning of the data of the DP.
16. The apparatus of claim 15, wherein the second block is configured to shift the data of the DP having its packet fragment relocated.
17. The apparatus of claim 14, wherein the data processing module comprises:
an OFDM block configured to receive a broadcast signal and to demodulate data of a signal frame included in the received broadcast signal by using an OFDM method,
a frame parser block configured to parse a signal frame by de-mapping data of the plurality of DPs, and
a decoding block configured to decode the data of the plurality of DPs per DP in accordance with the code rate.
18. The apparatus of claim 17, wherein the decoding block performs decoding by using data being included in a packet header of packets of the data of the DP.