1. Intervertebral implant (1) with a hollow cylindrical shape, said implant being provided with an outer thread (2) for screwing in the implant into the intermediate space between two adjacent vertebrae and being provided with openings (3) in its wall through which bone can grow in into the implant (1), with the implant (1) being manufactured of a material which is transparent for X-rays.
2. Intervertebral implant in accordance with claim 1, in which the material which is transparent for X-rays comprises a plastic or is manufactured of a plastic.
3. Intervertebral implant in accordance with claim 1 or claim 2, in which the material which is transparent for X-rays comprises a plastic which is reinforced by a fiber material.
4. Intervertebral implant in accordance with claim 2 or claim 3, in which the plastic is an injection moldable plastic.
5. Intervertebral implant in accordance with any one of the claims 3 or 4, in which the fiber material comprises carbon fibers and the plastic is polyether ether ketone (PEEK).
6. Intervertebral implant in accordance with any one of the claims 3 to 5, in which the implant (1c) comprises a hollow cylindrical body (4c) of fiber material which is embedded in plastic, with the hollow cylindrical body (4c) of fiber material extending over the entire length of the implant (1c).
7. Intervertebral implant in accordance with any one of the claims 3 to 5, in which the implant (1, 1a, 1b) comprises three bodies (4, 5, 6; 4a, 5a, 6a; 4b, 5b, 6b) which are manufactured of fiber material, which are formed in ring shape and which are embedded in plastic.
8. Intervertebral implant (1, 1b) in accordance with claim 7, in which one of the bodies (4a, 4b) which is formed in ring shape is arranged in the central region (10, 10b) of the implant and the other two (5, 6; 5b, 6b) in the respective end region (11, 12; 11b, 12b) of the implant.
9. Intervertebral implant (1a) in accordance with claim 7, in which all three ring-shaped bodies (4a, 5a, 6a) are arranged in the central region (10a) of the implant (1a) and in which the end regions (11a, 12a) of the implant (1a) are provided with a chamfer (110a, 120a).
10. Intervertebral implant (1d) in accordance with any one of the claims 3 to 5, in which the implant (1d) comprises a body (4d) of fiber material which winds uniformly helically around the longitudinal axis of the implant and which is embedded in plastic, and indeed in such a manner that the ridges (20d) of the outer thread (2d) of the implant (1d) are arranged around the windings of the helical body (4d) and the base (21d) of the outer thread (2d) is arranged between the windings of the helical body (4d).
11. Intervertebral implant in accordance with any one of the preceding claims, in which the surface of the implant is provided with a material which furthers the osteo-integration, in particular with hydroxylapatite ceramic.
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 signal discrimination apparatus for classifying a type of an input signal into a voice and a data, the discrimination apparatus comprising:
first detection means for detecting a tone signal of a specific frequency from said input signal;
second detection means for detecting a specific signal used in a start-up procedure of a modem signal from said input signal; and
discrimination means for classifying the type of said input signal based on outputs of said first and second detection means;
wherein, when said specific signal has not been detected, a signal discrimination result in the case of said tone signal being detected is made to be a voice state, and when said specific signal has been detected, a signal discrimination result in the case of said tone signal being detected is not made to be a voice state.
2. The signal discrimination apparatus according to claim 1, wherein said start-up procedure is a V.34 procedure.
3. The signal discrimination apparatus according to claim 1, wherein said start-up procedure is a V.8 procedure.
4. The signal discrimination apparatus according to claim 1, wherein said second detection means is an ANSam signal detector for detecting the ANSam signal in the V.8 procedure.
5. The signal discrimination apparatus according to claim 4, wherein, instead of said ANSam signal detector, third detection means for detecting a tone signal of a specific frequency from said input signal is used.
6. The signal discrimination apparatus according to claim 5, wherein the tone signal of the specific frequency which said third detection means detects is a tone signal of 2100 Hz.
7. The signal discrimination apparatus according to claim 1, wherein said second detection means is a V.21 modem signal detector which detects a V.21 (channel No. 2) modem signal in the V.8 procedure.
8. The signal discrimination apparatus according to claim 1, wherein said second detection means is a JM signal detector which detects a JM signal in the V.8 procedure.
9. The signal discrimination apparatus according to claim 1, wherein said second detection means is an INFO0a signal detector which detects an INFO0a signal in the start-up procedure of the modem.
10. The signal discrimination apparatus according to claim 1, further comprising an activity detector for judging an activeinactive state of said input signal, wherein, after a specific signal used in the start-up procedure of the modem signal has been detected, when an inactive state continues for a predetermined time, a detection state of said specific signal is initialized.
11. The signal discrimination apparatus according to claim 1, further comprising a first activity detector for judging an activeinactive state of a transmitting side signal and a second activity detector for judging an activeinactive state of a receiving side signal, wherein, after a specific signal used in the start-up procedure of the modem signal has been detected, when both the transmitting side and the receiving side continue to be in an inactive state for a predetermined time, the detection state of said specific signal is initialized.
12. The signal discrimination apparatus according to claim 1, further comprising a continuity check test tone detector for detecting a tone signal of a specific frequency sent for the purpose of a continuity check test of a channel from said input signal, wherein, after said specific signal used for the start-up procedure of modem signal has been detected, when the tone signal of the specific frequency sent for the purpose of the continuity check test of said channel is detected, the detection state of said specific signal is initialized.
13. The signal discrimination apparatus according to claim 1, wherein the tone signal of the specific frequency which said first detection means detects is a tone signal of 2400 Hz.
14. A signal discrimination method for classifying a type of an input signal into a voice and a data, said signal discrimination method including:
a first step of detecting a tone signal of a specific frequency from said input signal:
a second step of detecting a specific signal used in a start-up procedure of a modem signal from said input signal; and
a third step of setting a specific signal detection flag when said specific signal is detected,
wherein, when said specific signal detection flag is not set, a signal discrimination result in the case of the tone signal of said specific frequency being detected is made to be a voice state, and when said specific signal detection flag is set, a signal discrimination result in the case of the tone signal of said specific frequency being detected is not made to be a voice state.
15. The signal discrimination method according to claim 14, wherein said start-up procedure is a V.34 procedure.
16. The signal discrimination method according to claim 14, wherein said start-up procedure is a V.8 procedure.
17. The signal discrimination method according to claim 14, wherein said specific signal is an ANSam signal in the V.8 procedure.
18. The signal discrimination method according to claim 14, wherein said specific signal is a V.21 (channel No. 2) modem signal in the V.8 procedure.
19. The signal discrimination method according to claim 14, wherein said specific signal is an INFO0a signal in the start-up procedure of the modem.
20. The signal discrimination method according to claim 14, wherein, after said specific signal used in the start-up procedure of modem signal has been detected, when both a transmitting side and a receiving side continue to be in an inactive state for a predetermined time, a detection state of said specific signal is initialized.
21. The signal discrimination method according to claim 14, further comprising a fourth step of detecting a tone signal of a specific frequency sent for the purpose of a continuity check test of a channel from said input signal, wherein, after said specific signal used for the start-up procedure of modem signal has been detected, when the tone signal of the specific frequency sent for the purpose of the continuity check test of said channel is detected, the detection state of said specific signal is initialized.
22. The signal discrimination method according to claim 14, wherein the tone signal of the specific frequency detected in said first step is a tone signal of 2400 Hz.
23. A transmission equipment comprising:
a signal discrimination apparatus according to claim 1 for classifying a type of an input signal into a voice and a data;
encoding means for encoding said input signal at an adequate encoding bit rate in a low bit rate encoding fashion based on a signal discrimination result of said signal discrimination apparatus;
transmitting means for transmitting encoded data encoded by said encoding means;
receiving means for receiving the encoded data sent by an opposed equipment side; and
decoding means for decoding the encoded data received from said receiving means.