1. A decoding method, comprising:
detecting a synchronization code at a plurality of synchronization code inserting positions periodically provided in an input code string, the input code string including a multiplexed code string obtained by multiplexing a plurality of variable length code strings, each of the plurality of variable length code strings having a code word capable of being decoded in forward and backward directions, the code word being generated by compressing and coding an image signal;
demultiplexing the multiplexed code string in the input code string based on a position of the detected synchronization code to generate the variable length code; and
decoding the generated variable length code to output a reproduced image signal.
2. A decoder, comprising:
a synchronization code detector configured to detect a synchronization code at a plurality of synchronization code inserting positions periodically provided in an input code string, the input code string including a multiplexed code string obtained by multiplexing a plurality of variable length code strings, each of the plurality of variable length code strings having a code word capable of being decoded in forward and backward directions, the code word being generated by compressing and coding an image signal;
a demultiplexer configured to demultiplex the multiplexed code string in the input code string based on a position of the synchronization code detected by the synchronization code detector to generate the variable length code; and
a decoder configured to decode the generated variable length code to output a reproduced image signal.
3. The decoder according to claim 2, further comprising:
a code string converter configured to convert a code string except for the synchronization code converted so that a Hamming distance for the synchronization code at the synchronization code inserting position of the input code string becomes a predetermined value, into an original code string.
4. The decoder according to claim 2,
wherein the multiplexed code string is generated by multiplexing the variable length codes in units of one frame of the image signal; and
the demultiplexer demultiplexes the multiplexed code string in units of one frame.
5. The decoder according to claim 4, further comprising:
a code string converter configured to convert a code string, except for the synchronization code, into an original code string, the code string converter converting the code string so that a Hamming distance for the synchronization code at the synchronization code inserting position of the input code string becomes a predetermined distance.
6. The decoder according to claim 2,
wherein the multiplexed code string is generated by multiplexing the variable length codes in units of a partial area of each frame of the image signal; and
the demultiplexer demultiplexes the multiplexed code string in units of the partial area.
7. The decoder according to claim 6, further comprising:
a code string converter configured to convert a code string, except for the synchronization code, into an original code string, the code string converter converting the code string so that a Hamming distance for the synchronization code at the synchronization code inserting position of the input code string becomes a predetermined distance.
8. The decoder according to claim 2,
wherein the multiplexed code string is generated by multiplexing the variable length codes in units of one frame of the image signal;
the synchronization code detector detects the synchronization code at the synchronization code inserting position positioned immediately before or after an end portion in each multiplexed unit multiplexed in units of one frame of the multiplexed code string; and
the demultiplexer demultiplexes the multiplexed code string in units of one frame.
9. The decoder according to claim 8, further comprising:
a code string converter configured to convert a code string, except for the synchronization code, into an original code string, the code string converter converting the code string so that a Hamming distance for the synchronization code at the synchronization code inserting position of the input code string becomes a predetermined distance.
10. The decoder according to claim 2,
wherein the multiplexed code string is generated by multiplexing the variable length codes in units of a partial area of each frame of the image signal;
the synchronization code detector detects the synchronization code at the synchronization code inserting position positioned immediately before or after an end portion in each multiplexed unit multiplexed in units of the partial area of the multiplexed code string; and
the demultiplexer demultiplexes the multiplexed code string in units of the partial area.
11. The decoder according to claim 10, further comprising:
a code string converter configured to convert a code string, except for the synchronization code, into an original code string, the code string converter converting the code string so that a Hamming distance for the synchronization code at the synchronization code inserting position of the input code string becomes a predetermined distance.
12. The decoder according to claim 2,
wherein the input code string has a stuffing bit, a Hamming distance between the synchronization code, or a portion of the synchronization code being equal to or more than a predetermined value.
13. The decoder according to claim 12,
wherein the stuffing bit is arranged immediately before the synchronization code in the input code string.
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 speaker structure comprising:
a speaker unit;
a food container, having an open top, a bottom, a continuous circumferential wall extending between the top and the bottom, wherein said open top, said bottom, and said continuous circumferential wall together defines a hollow space therein; and
a baffling device, comprising:
a baffle, covering said open top of said food container, having an opening formed therein for accommodating said speaker unit; and
means for retaining said open top of said food container, which is detachably attached to an inner side of said baffle,
wherein said food container is removable from said baffling device, and when said food container is attached to said baffling device, said food container is adapted to work as a resonant box for said speaker unit and when said food container is detached from said baffling device, said food container is adapted to hold food in said hollow space.
2. The speaker structure of claim 1, further comprising a support portion connected with said baffle for supporting said speaker structure.
3. The speaker structure of claim 2, further comprising a biasing portion connected with said support portion, said biasing portion being configured to retain said bottom of said food container and resiliently biasing the open top of the food container toward the baffle of the baffling device, so that said food container can be firmly attached to the baffling device.
4. The speaker structure of claim 3, wherein said biasing portion of said baffling device is connected with said support portion of said baffling device through a spring plate.
5. The speaker structure of claim 4, wherein said baffle of said baffling device is located higher than said biasing portion of said baffling device.
6. The speaker structure of claim 4, further comprising a vent pipe, said baffle of said baffling device having a through hole therein, said through hole being adjacent to said opening of said baffle, and said vent pipe being positioned in said through hole.
7. The speaker structure of claim 4, wherein said means for retaining said open top of said food container is integrally formed with said baffle of said baffling device.
8. The speaker structure of claim 4, wherein said means for retaining said open top of said food container is in the form of a ring-shaped washer, said open top of said food container being retained by an outer periphery of said ring-shaped washer.
9. The speaker structure of claim 8, wherein said ring-shaped washer has a flange having plural holes therein so that fasteners can be incorporated and it can be attached to said inner side of said baffle, and said outer periphery of said ring-shaped washer is zigzag so that it can be tightly fitted with said open top of said food container.
10. The speaker structure of claim 4, wherein said means for retaining said open top of said food container is composed of at least one protrusion.
11. The speaker structure of claim 2, wherein said food container is a cup.
12. The speaker structure of claim 9, further comprising a piece of sponge, which is disposed within the food container to serve as sound-absorbing material when the food container is attached to the baffling device, and is used for cleaning the food container when the food container is detached from the baffling device.
13. The speaker structure of claim 1, further comprising a support portion having two legs extending downward therefrom.
14. The baffling device of claim 13, further comprising a vent pipe, said baffle of said baffling device having a through hole therein, said through hole being adjacent to said opening of said baffle, and said vent pipe being positioned in said through hole.
15. The baffling device of claim 14, wherein said means for retaining said open top of said food container is in the form of a ring-shaped washer, said open top of said food container being retained by an outer periphery of said ring-shaped washer.
16. The baffling device of claim 15, wherein said ring-shaped washer has a flange having plural holes therein so that fasteners can be incorporated and it can be attached to said inner side of said baffle, and said outer periphery of said ring-shaped washer is zigzag so that it can be tightly fitted with said open top of said food container.
17. The baffling device of claim 13, wherein said means for retaining said open top of said food container comprises a annular flange fixed to said inner side of said baffle, and a separate annular washer, said annular flange having a threaded outer circumference so that it can be detachably engaged with a threaded inner circumference of said annular washer.
18. The baffling device of claim 17, wherein said annular washer comprises a waved surface so that it can be tightly fitted with said open top of said food container.