1. A recording medium in which multiplexed data obtained by multiplexing audio data and coded picture data obtained by coding pictures constituting a moving image are recorded, wherein:
said coded picture data recorded in the recording medium includes
a P picture encodable by p-mode inter-picture prediction, or
a B picture encodable by b-mode inter-picture prediction,
said coded picture data having been coded with referring to a reference picture selected from I pictures or P pictures, without referring to a B picture, when said coded picture data is a P picture, and
said coded picture data having been coded with referring to reference pictures selected from (i) one or more B picture which is positioned between forward and backward I or P pictures which are closest to the coded picture data in display order, and (ii) forward and backward I or P pictures which are closest to the coded picture in display order, without one or more B picture which is not positioned between forward and backward I or P pictures which are closest to the coded picture data in display order being selected as reference pictures, when said coded picture data is a B picture.
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 shield used for electron beam container sterilization equipment that sterilizes a container with electron beams emitted to the container,
the shield including a composite shield of a magnetic shield layer and an X-ray shield layer between a pair of corrosion resistant layers for protection against a corrosive atmosphere, the magnetic shield layer blocking magnetism while the X-ray shield layer blocks X-rays generated by reflection and diffraction of electron beams,
the composite shield including an insulating layer interposed between one of the corrosion resistant layers and the magnetic shield layer, between the magnetic shield layer and the X-ray shield layer, and between the X-ray shield layer and the other corrosion resistant layer.
2. A shield used for electron beam container sterilization equipment that sterilizes a container with electron beams emitted to the container,
the shield being composed of a plurality of composite shield blocks,
the composite shield block including a magnetic shield and an X-ray shield in a hollow section of a board-shaped shell made of a corrosion resistant material, and an insulating layer between one surface of the board-shaped shell and the magnetic shield, between the magnetic shield and the X-ray shield, and between the X-ray shield and another surface of the board-shaped shell.
3. Electron beam container sterilization equipment that inserts, from a mouth of a container, an electron beam irradiation nozzle having an exit window on a distal end of the irradiation nozzle and sterilizes an inner surface of the container,
the electron beam irradiation nozzle being surrounded by a shield,
the shield being composed of the shield according to claim 1.
4. Electron beam container sterilization equipment that holds containers kept in an upright position, move the containers along a circular path around a vertical pivot axis, moves electron beam irradiation nozzles in synchronization with the containers, moves at least one of the electron beam irradiation nozzle and the container upward or downward, inserts the electron beam irradiation nozzle into a mouth of the container, and sterilizes an inner surface of the container with electron beams emitted from the electron beam irradiation nozzle,
the equipment including an inner shield along an inner periphery of the circular path and an outer shield along an outer periphery of the circular path,
the inner and outer shields each being composed of the shield according to claim 1.
5. Electron beam container sterilization equipment that inserts, from a mouth of a container, an electron beam irradiation nozzle having an exit window on a distal end of the irradiation nozzle and sterilizes an inner surface of the container,
the electron beam irradiation nozzle being surrounded by a shield,
the shield being composed of the shield according to claim 2.
6. Electron beam container sterilization equipment that holds containers kept in an upright position, move the containers along a circular path around a vertical pivot axis, moves electron beam irradiation nozzles in synchronization with the containers, moves at least one of the electron beam irradiation nozzle and the container upward or downward, inserts the electron beam irradiation nozzle into a mouth of the container, and sterilizes an inner surface of the container with electron beams emitted from the electron beam irradiation nozzle,
the equipment including an inner shield along an inner periphery of the circular path and an outer shield along an outer periphery of the circular path,
the inner and outer shields each being composed of the shield according to claim 2.