1. System comprising:
an optical element (102) for generating a periodic array of light spots (103) intended to be applied to an information carrier (101),
said information carrier (101) comprising a first periodic structure (108) being intended to interfere with said periodic array of light spots (103) for generating a first moir\xe9 pattern, and a second periodic structure (109) being intended to interfere with said periodic array of light spots (103) for generating a second moir\xe9 pattern, said second periodic structure (109) being placed perpendicularly to said first periodic structure (108),
first analysis means (118) for deriving from said first and second moir\xe9 patterns, the spatial position (x,y) between said periodic array of light spots (103) and said information carrier (101),
first actuation means (AC1-AC2) for adjusting the spatial position of said information carrier (101) with respect to said array of light spots (103), based on control signals (122) derived from said spatial position (x,y).
2. System as claimed in claim 1, wherein said information carrier also comprises a third periodic structure (112) intended to interfere with said periodic array of light spots (103) for generating a third moir\xe9 pattern, said third periodic structure (112) being placed parallel and opposite to said first periodic structure (108), said system also comprising
second analysis means (119) for deriving from said first and third moir\xe9 patterns, the angle value (\u03b8) between said periodic array of light spots (103) and said information carrier (101),
second actuation means (AC3-AC4-AC5) for adjusting the angular position of said information carrier (101) with respect to said array of light spots (103), based on control signals (123) derived from said angle value (\u03b8).
3. System as claimed in claim 1, wherein said information carrier also comprises a third periodic structure (112) intended to interfere with said periodic array of light spots (103) for generating a third moir\xe9 pattern, and a fourth periodic structure (114) intended to interfere with said periodic array of light spots (103) for generating a fourth moir\xe9 pattern, said third periodic structure (112) being placed parallel and opposite to said first periodic structure (108), and said fourth periodic structure (114) being placed parallel and opposite to said second periodic structure (109), said system also comprising:
second analysis means (119) for deriving from said first and third moir\xe9 patterns, and from said second and fourth moir\xe9 patterns, the angle value (\u03b8) between said periodic array of light spots (103) and said information carrier (101),
second actuation means (AC3-AC4-AC5) for adjusting the angular position of said information carrier (101) with respect to said array of light spots (103), based on control signals (123) derived from said angle value (\u03b8).
4. System as claimed in claim 2, also comprising:
third analysis means (120) for deriving a measure of the period(s) of said first, second, third or fourth periodic structure (108, 109, 112, 114), from the period (p) of said periodic array of light spots (103), said angle value (\u03b8), and the angle (\u03c6) between said first, second, third or fourth periodic structure (108, 109, 112, 114), and said first, second, third or fourth moir\xe9 pattern,
third actuation means (PF) for adjusting the period of said first, second, third or fourth periodic structure (108, 109, 112, 114), based on control signals (124) derived from the measure of said period(s).
5. System as claimed in claim 1, also comprising:
fourth analysis means (121) for deriving a contrast value of at least one of said first, second, third or fourth moir\xe9 pattern,
fourth actuation means (AC6) for adjusting the distance between said information carrier (101) and said array of light spots (103), based on control signals (125) derived from said contrast value.
6. Information carrier (101) intended to be read andor written by a periodic array of light spots, said information carrier (101) comprising:
a data area (105) defined by a set of elementary data areas,
a first periodic structure (108) intended to interfere with said periodic array of light spots for generating a first moir\xe9 pattern,
a second periodic structure (109) intended to interfere with said periodic array of light spots for generating a second moir\xe9 pattern, said second periodic structure (109) being arranged perpendicularly to said first periodic structure (108).
7. Information carrier as claimed in claim 6, wherein said first and second periodic structures (108, 109) are placed on the periphery of said data area (105), or arranged according to a cross inside said data area (105).
8. Information carrier (101) intended to be read andor written by a periodic array of light spots, said information carrier (101) comprising:
a data area (105) defined by a set of elementary data areas,
a first periodic structure (108) intended to interfere with said periodic array of light spots for generating a first moir\xe9 pattern, said first periodic structure (108) being placed on the periphery of said data area (105),
a second periodic structure (109) intended to interfere with said periodic array of light spots for generating a second moir\xe9 pattern, said second periodic structure (109) being placed on the periphery of said data area (105) and arranged perpendicularly to said first periodic structure (108),
a third periodic structure (112) intended to interfere with said periodic array of light spots for generating a third moir\xe9 pattern, said third periodic structure (112) being identical with said first periodic structure (108), placed on the periphery of said data area (105) and arranged parallel and opposite to said first periodic structure (108).
9. Information carrier as claimed in claim 8, further comprising a fourth periodic structure (114) intended to interfere with said periodic array of light spots for generating a fourth moir\xe9 pattern, said fourth periodic structure (114) being identical with said second periodic structure (109), placed on the periphery of said data area (105) and arranged parallel and opposite to said second periodic structure (109).
10. Information carrier (101) intended to be read andor written by a periodic array of light spots, said information carrier (101) comprising:
a data area (105) defined by a set of elementary data areas,
a two-dimensional periodic structure (TD) intended to interfere with said periodic array of light spots for generating a moir\xe9 pattern, said two-dimensional periodic structure (TD) being intermingled with said elementary data areas.
11. Information carrier as claimed in claim 10, wherein said two-dimensional periodic structure (TD) defines a grid.
12. Information carrier as claimed in claim 6, further comprising a transparent layer (PF) made of a polymer film, the size of said transparent layer (PF) being controllable by a voltage (V).
13. Apparatus for reading andor writing data on an information carrier, said apparatus comprising a system as claimed in claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A mobile communication system comprising:
a determination unit configured to determine as to layers of data to be transmitted by base stations to mobile stations for respective radio areas, based on area resource information concerning radio resources for the respective radio areas covered by the base stations; and
a radio transmitter configured to transmit the data to the mobile stations according to a determination of the determination unit.
2. A radio network controller comprising:
a determination unit configured to determine as to layers of data to be transmitted by base stations to mobile stations for respective radio areas, based on area resource information concerning radio resources for the respective radio areas covered by the base stations; and
a data transmitter configured to transmit the data to the base stations according to a determination of the determination unit.
3. The radio network controller of claim 2, wherein
the determination unit determines the layers from among the data being layered, and
the data transmitter transmits the data of the layers determined by the determination unit.
4. The radio network controller of claim 2, wherein
the determination unit determines layering methods for layering the data, further comprising:
a layered data converter configured to layer the data for the respective radio areas using the layering methods determined by the determination unit, wherein
the data transmitter transmits the data layered by the converter.
5. The radio network controller of claim 2, further comprising:
a resource information receiver configured to receive the area resource information from the base stations,
the determination unit determines based on the area resource information received by the resource information receiver.
6. A base station comprising:
a determination unit configured to determine as to layers of data to be transmitted to mobile stations for respective radio areas, based on area resource information concerning radio resources for the respective radio areas covered by the base station; and
a radio transmitter configured to transmit the data to the mobile stations according to a determination of the determination unit.
7. The base station of claim 6, wherein
the determination unit determines the layers from among the data being layered, and
the radio transmitter transmits the data of the layers determined by the determination unit.
8. The base station of claim 6, wherein
the determination unit determines layering methods for layering the data, further comprising:
a layered data converter configured to layer the data for the respective radio areas using the layering methods determined by the determination unit, wherein
the radio transmitter transmits the data layered by the converter.
9. The base station of claim 6, further comprising:
a resource information collection unit configured to collect the area resource information, wherein
the determination unit determines based on the area resource information collected by the resource information collection unit.
10. A base station comprising:
a notification unit configured to notify a radio network controller of area resource information concerning radio resources for respective radio areas covered by the base station;
a data receiver configured to receive data being layered for the respective radio areas transmitted from the radio network controller based on the area resource information notified by the notification unit; and
a radio transmitter configured to transmit the data received by the data receiver to mobile stations for the respective radio areas.
11. The base station of claim 10, further comprising:
a resource information collection unit configured to collect the area resource information, wherein
the notification unit notifies of the area resource information collected by the resource information collection unit.
12. A communication method comprising:
determining as to layers of data to be transmitted by base stations to mobile stations for respective radio areas, based on area resource information concerning radio resources for the respective radio areas covered by the base stations; and
transmitting the data to the mobile stations according to a determination.