1. A switchable planetary gearbox for a hand-held power tool, the planetary gearbox comprising:
a planetary carrier;
a rotatable sleeve having a sun wheel toothing and arranged centrally on an end face of the planetary carrier, wherein the rotatable sleeve comprises a radial section having an outer circumferential toothing;
planet wheels resting against the end face of the planetary carrier and permanently meshing with the sun wheel toothing of the rotatable sleeve, wherein the radial section of the rotatable sleeve is arranged on a side of the planet wheels facing away from the planetary carrier and projects radially past the planet wheels;
a switching ring gear surrounding the planet wheels and having an inner circumferential toothing permanently meshing with the planet wheels, wherein the switching ring gear is axially moveable on the planet wheels from a first end position into a second end position for switching a transmission stage of the planetary gearbox, wherein in the second end position the switching ring gear engages the outer circumferential toothing of the radial section;
a synchronization disk positioned between the planet wheels and the radial section, wherein the synchronization disk is connected to the rotatable sleeve so as to rotate with the rotatable sleeve;
wherein the synchronization disk acts directly or indirectly by friction on the switching ring gear when the switching ring gear is moved from the first end position into the second end position.
2. The planetary gearbox according to claim 1, wherein the synchronization disk extends at least approximately into the area of the outer circumferential toothing.
3. The planetary gearbox according to claim 2, wherein the synchronization disk has a diameter matching approximately a diameter of a tip circle of the inner circumferential toothing of the swicthing ring gear.
4. The planetary gearbox according to claim 1, wherein the synchronization disk has an inner circumference with at least one radial nose, wherein the at least one radial nose engages the sun wheel toothing of the rotatable sleeve.
5. The planetary gearbox according to claim 4, wherein several of the at least one radial nose are provided and are spaced from one another at a rotary angle spacing that is matched to a pitch of the sun wheel toothing.
6. The planetary gearbox according to claim 1, wherein the synchronization disk has an outer circumference provided with an angled edge.
7. The planetary gearbox according to claim 1, wherein the synchronization disk has an outer circumference provided with several displaceable contact sections.
8. The planetary gearbox according to claim 7, wherein the contact sections are comprised of contact jaws and spring arms, wherein the spring arms are springy within a plane of the synchronization disk and the contact jaws are connected radial outwardly to the spring arms.
9. The planetary gearbox according to claim 8, wherein the spring arms are created by cutouts in the synchronization disk.
10. The planetary gearbox according to claim 1, wherein the synchronization disk has a thickness of less than 2 mm.
11. The planetary gearbox according to claim 10, wherein the synchronization disk has a thickness of 0.5 mm.
12. The planetary gearbox according to claim 1, wherein the radial section is a planetary carrier of an axially aligned second gear stage of the planetary gearbox.
13. The planetary gearbox according to claim 1, wherein the synchronization disk has a diameter that is minimally oversized relative to a diameter of a tip circle of the inner circumferential toothing of the switching ring gear.
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. An optical disc comprising a data area in which information signals are recorded, a lead-in area and a lead-out area provided before and after the data area, and a program memory area for temporarily storing address information necessary for additionally writing information signals,
wherein a subcode Q of the lead-in area andor a subcode Q of the program memory area is provided with identification information for identifying the subcodes.
2. The optical disc as claimed in claim 1, wherein the identification information is provided at least in one of address (ADR), track number (TNO), and zero (ZERO) constituting the subcode Q of the lead-in area andor the program memory area.
3. The optical disc as claimed in claim 1, wherein the identification information provided in the subcode Q of the lead-in area andor the subcode Q of the program memory area is constituted by information of at least 2 bits.
4. The optical disc as claimed in claim 1, wherein a wobbled track groove is formed.
5. The optical disc as claimed in claim 4, wherein position information is included in wobbling information of the track groove.
6. The optical disc as claimed in claim 1, wherein the respective areas are arranged in the order of the program memory area, the lead-in area, the data area, and the lead-out area from the inner circle toward the outer circle.
7. The optical disc as claimed in claim 6, wherein a power calibration area for calibrating the laser power at the time of data recording is further provided on the inner side than the program memory area.
8. An optical disc comprising a data area in which a wobbled track groove is formed and information signals are recorded, a lead-in area and a lead-out area provided before and after the data area, and a program memory area provided on the inner side than the lead-in area and adapted for temporarily storing address information necessary for additionally writing information signals,
wherein a subcode Q of the lead-in area andor a subcode Q of the program memory area is provided with identification information for identifying the subcodes.
9. The optical disc as claimed in claim 8, wherein the identification information is provided at least in one of address (ADR), track number (TNO), and zero (ZERO) constituting the subcode Q of the lead-in area andor the program memory area.
10. The optical disc as claimed in claim 8, wherein the identification information provided in the subcode Q of the lead-in area andor the subcode Q of the program memory area is constituted by information of at least 2 bits.
11. The optical disc as claimed in claim 8, wherein position information is included in wobbling information of the track groove.
12. The optical disc as claimed in claim 8, wherein a power calibration area for calibrating the laser power at the time of data recording is further provided on the inner side than the program memory area.
13. An optical disc driving device for carrying out recording andor reproduction of information signals by casting a light beam onto an optical disc comprising a data area in which information signals are recorded, a lead-in area and a lead-out area provided before and after the data area, and a program memory area for temporarily storing address information necessary for additionally writing information signals,
the device comprising a data processing section for processing data obtained from a reflected light from the optical disc, wherein a subcode Q of the lead-in area and a subcode Q of the program memory area are discriminated on the basis of identification information provided for the subcode Q of the lead-in area andor the subcode Q of the program memory area.
14. The optical disc driving device as claimed in claim 13, wherein the identification information is provided at least in one of address (ADR), track number (TNO), and zero (ZERO) constituting the subcode Q of the lead-in area andor the program memory area.
15. The optical disc driving device as claimed in claim 13, wherein the identification information provided in the subcode Q of the lead-in area andor the subcode Q of the program memory area is constituted by information of at least 2 bits.
16. The optical disc driving device as claimed in claim 13, wherein a wobbled track groove is formed on the optical disc.
17. The optical disc driving device as claimed in claim 16, wherein position information is detected on the basis of position information included in wobbling information of the track groove.
18. The optical disc driving device as claimed in claim 13, wherein the respective areas are arranged on the optical disc in the order of the program memory area, the lead-in area, the data area, and the lead-out area from the inner circle toward the outer circle.
19. The optical disc driving device as claimed in claim 18, wherein a power calibration area for calibrating the laser power at the time of data recording is further provided on the inner side than the program memory area on the optical disc, and calibration of the laser power is carried out by using the power calibration area at the time of recording.