1. A method for communication between an emitting motor vehicle (Ve) and at least one target, the emitting vehicle (Ve) including at least one light device, the method comprising the following step:
automatically modulating a light signal (S) emitted by the light device for a communication between the vehicle (Ve) and the target;
the light device being chosen from: a lighting device, a daytime running light (DRL), a position light.
2. The method according to claim 1, wherein the light device comprises at least one light-emitting diode arranged to participate in the modulated light signal (S).
3. The method according to claim 1, wherein the modulated light signal (S) is arranged to be perceptible to the human eye.
4. The method according to claim 1, wherein the light device is arranged to fulfill a predetermined regulatory photometric function, chosen from:
a high beam;
a low beam;
a DRL light (Daytime Running Light);
a signalling light; or
a fog beam;
the modulated light signal (S) corresponding to the modulation of the predetermined photometric function.
5. The method according to claim 1, wherein the light device is capable of producing a road lighting and that the modulated light signal (S) corresponds to the modulation of this road lighting.
6. The method according to claim 1, wherein the target includes at least one photosensitive electronic sensor, arranged to receive the modulated light signal (S).
7. The method according to claim 1, wherein the emitting vehicle (Ve) includes a photosensitive electronic sensor arranged to receive a modulated light signal (S2) emitted by a lighting andor signalling device of a third-party vehicle.
8. The method according to claim 1, wherein the modulated light signal (S) is arranged to carry at least one information item, notably binary.
9. The method according to claim 8, wherein the information item carried by the modulated light signal (S) relates, for example, to a traffic condition around the emitting vehicle (Ve), to the state of the emitting vehicle (Ve), to a message.
10. The method according to claim 9, wherein the emission of the modulated light signal (S) is generated by an automatic control device.
11. A system for communication between an emitting motor vehicle (Ve) and a target, this system comprising:
at least one light device; and
a modulation device for automatically modulating the light signal (S) emitted by the light device for a communication between the vehicle (Ve) and the target.
12. The system according to claim 11, wherein the light device is arranged to fulfill a predetermined regulatory photometric function, chosen from:
a high beam;
a low beam;
a DRL light (Daytime Running Light);
a signalling light; or
a fog beam;
the modulated light signal (S) corresponding to the modulation of the predetermined photometric function.
13. The method according to claim 2, wherein the modulated light signal (S) is arranged to be perceptible to the human eye.
14. The method according to claim 2, wherein the light device is arranged to fulfill a predetermined regulatory photometric function, chosen from:
a high beam;
a low beam;
a DRL light (Daytime Running Light;
a signalling light; or
a fog beam;
the modulated light signal (S) corresponding to the modulation of the predetermined photometric function.
15. The method according to claim 3, wherein the light device is arranged to fulfill a predetermined regulatory photometric function, chosen from:
a high beam;
a low beam;
a DRL light (Daytime Running Light;
a signalling light; or
a fog beam;
the modulated light signal (S) corresponding to the modulation of the predetermined photometric function.
16. The method according to claim 2, wherein the light device is capable of producing a road lighting and that the modulated light signal (S) corresponds to the modulation of this road lighting.
17. The method according to claim 3, wherein the light device is capable of producing a road lighting and that the modulated light signal (S) corresponds to the modulation of this road lighting.
18. The method according to claim 2, wherein the target includes at least one photosensitive electronic sensor, arranged to receive the modulated light signal (S).
19. The method according to claim 3, wherein the target includes at least one photosensitive electronic sensor, arranged to receive the modulated light signal (S).
20. The method according to claim 2, wherein the emitting vehicle (Ve) includes a photosensitive electronic sensor arranged to receive a modulated light signal (S2) emitted by a lighting andor signalling device of a third-party vehicle.
21. The method according to claim 3, wherein the emitting vehicle (Ve) includes a photosensitive electronic sensor arranged to receive a modulated light signal (S2) emitted by a lighting andor signalling device of a third-party vehicle.
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. An information recording medium having at least a read only area and a recording and reproducing area comprising at least:
a substrate;
a recording layer formed on the substrate so as to record and reproduce information; and
a light transmitting layer having transparency formed on the recording layer,
the information recording medium further comprising a wobbling groove corresponding to the read only area and another wobbling groove corresponding to the recording and reproducing area formed on the substrate without overlapping each other,
wherein the recording and light transmitting layers are continuously adhered over at least two areas of the read only area and the recording and reproducing area, and
wherein reflectivity of the recording layer is more than 5%, and
wherein a push-pull signal output T3 reproduced from the read only area and another push-pull signal output T4 reproduced from the recording and reproducing area before recording satisfies relations of T3\u22670.1 and T4\u22670.1, and
wherein the wobbling groove corresponding to the read only area contains a wobbling groove modulated by the frequency-shift keying method, and
wherein the other wobbling groove corresponding to the recording and reproducing area contains a wobbling groove modulated by the phase-shift keying method, and
wherein the wobbling groove corresponding to the read only area is recorded with a control data in a wobbling shape, and
wherein the control data is a specific code data of a reproduction power information, and
wherein a track pitch of the wobbling groove corresponding to the read only area is P3, another track pitch of the other wobbling groove corresponding to the recording and reproducing area is P4, a wavelength of reproducing light beam is \u03bb and a numerical aperture of an objective lens for reproduction is NA, and
wherein P3, P4, \u03bb and NA satisfy relations of P3\u2266\u03bbNA, P4\u2266\u03bbNA and P3>P4.
2. A reproducing method of an information recording medium having at least a read only area and a recording and reproducing area,
the information recording medium comprising at least:
a substrate;
a recording layer formed on the substrate so as to record and reproduce information;
a light transmitting layer having transparency formed on the recording layer; and
a wobbling groove corresponding to the read only area and another wobbling groove corresponding to the recording and reproducing area formed on the substrate without overlapping each other,
wherein the recording and light transmitting layers are continuously adhered over at least two areas of the read only area and the recording and reproducing area, and
wherein reflectivity of the recording layer is more than 5%, and
wherein a push-pull signal output T3 reproduced from the read only area and another push-pull signal output T4 reproduced from the recording and reproducing area before recording satisfies relations of T3\u22670.1 and T4\u22670.1, and
wherein the wobbling groove corresponding to the read only area contains a wobbling groove modulated by the phase-shift keying method, and
wherein the wobbling groove corresponding to the read only area is recorded with a control data in a wobbling shape, and
wherein the control data is a specific code data of a reproduction power information, and
wherein the other wobbling groove corresponding to the recording and reproducing area contains a wobbling groove modulated by the frequency-shift keying method, and
wherein a track pitch of the wobbling groove corresponding to the read only area is P3, another track pitch of the other wobbling groove corresponding to the recording and reproducing area is P4, a wavelength of reproducing light beam is \u03bb and a numerical aperture of an objective lens for reproduction is NA, and wherein P3, P4, \u03bb and NA satisfy relations of P3\u2266\u03bbNA, P4\u2266\u03bbNA and P3>P4,
the reproducing method comprising the steps of:
reading the read only area; and
reading the recording and reproducing area, wherein the step of reading the recording and reproducing area is sequentially conducted after the step of reading the read only area.