What is claimed is:
1. A code division multiple access receiver which measures the reception level of a received base band signal in code division multiple communication, outputs amplitude-adjusting signals corresponding to the reception level, and performs bit operation processes for removing invalid bit data from the correlation computation results of the received base band signal.
2. A code division multiple access receiver for demodulating a complex-spread and demodulated received base band signal, the receiver comprising:
an amplitude-adjusting section which performs electric power computations based on the results of correlation computations of the in-phase component and quadrature component of a received base band signal and spread signals corresponding to the in-phase component and quadrature component of the received base band signal, outputs electric power values and performs bit operation processes for removing invalid bit data on the correlation computation results based on input amplitude-adjusting signals, and
a control section which measures the reception level of the received base band signal based on the electric power values and outputs amplitude-adjusting signals corresponding to the reception level.
3. The receiver of claim 2, wherein the amplitude-adjusting section comprises:
an electric power-computing section which performs electric power computations based on the correlation computation results of the in-phase component and the quadrature component and outputs an electric power value corresponding to each component to the control section, and
a multiplication section which performs the bit operation processes using the amplitude-adjusting signals output from the control section and the correlation computation results of both components.
4. The receiver of claim 2, wherein the amplitude-adjusting section comprises:
an electric power-computing section which performs electric power computations based on the correlation computation results of the in-phase component and the quadrature component and outputs an electric power value corresponding to each component to the control section,
an averaging section which averages the electric power values output from the electric power-computing section and outputs the obtained average electric power value to the control section, and
a multiplication section which performs the bit operation processes using the amplitude-adjusting signals output from the control section and the correlation computation results of both components.
5. The receiver of claim 2, wherein the amplitude-adjusting section compares the correlation computation result with the bit operation result to detect whether the bit operation result has an overflow and outputs the result of the detection to the control section when the overflow is detected, and the control section makes a correction based on the result of the overflow detection so as to decrease bit data to be removed in the amplitude-adjusting section.
6. The receiver of claim 5, wherein the amplitude-adjusting section comprises:
an electric power-computing section which performs electric power computations based on the correlation computation results of the in-phase component and the quadrature component and outputs an electric power value corresponding to each component to the control section,
an averaging section which averages the electric power values output from the electric power-computing section and outputs the obtained average electric power value to the control section,
a multiplication section which performs the bit operation processes using the amplitude-adjusting signals output from the control section and the correlation computation results of both components, and
an overflow-detecting section which compares the correlation computation result with the bit operation result to detect whether the bit operation result has an overflow and outputs the result of the detection to the control section when the overflow is detected.
7. The receiver of claim 5, wherein the amplitude-adjusting section comprises:
an electric power-computing section which performs electric power computations based on the correlation computation results of the in-phase component and the quadrature component and outputs an electric power value corresponding to each component to the control section,
an averaging section which averages the electric power values output from the electric power-computing section and outputs the obtained average electric power value to the control section,
a multiplication section which performs the bit operation processes using the amplitude-adjusting signals output from the control section and the correlation computation results of both components,
an overflow-detecting section which compares the correlation computation result with the bit operation result to detect whether the bit operation result has an overflow and outputs the result of the detection when the overflow is detected, and
a limiter section which makes an adjustment to the bit operation result in which the overflow is detected based on the detection result so that overflow is set to be a predetermined upper or lower limit.
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. Contraceptive device comprising an obturator having a body with a cylindrical configuration, made of a flexible material and including two stabilizing deformable stiffeners or wings that can be folded back along the body of the obturator when unactivated, spreading out radially in a fitted situation in an isthmic part of a Fallopian tube, the two stabilizing deformable stiffeners or wings being in opposite positions so that a distal one of the two stabilizing deformable stiffeners or wings is situated to fit in the isthmic part of the Fallopian tube and a proximal one of the two stabilizing deformable stiffeners or wings is situated on edges of a tubal ostium, wherein the device further comprises, along the body, a plurality of projecting forms, having a ridged configuration, running along an entire length of said obturator body in a continuous manner from a tapered bulge of the proximal end to a spherical distal end of a head and having a dual function of blocking a tubal lumen and protecting tubal haustrations, the projecting forms accommodating themselves within alveoli formed in a body of the Fallopian tube and being in contact with some of mucosal folds or haustrations, causing deformation of the alveoli to block and obstruct spermatozoa and to close off other mucosal folds in order to protect their surface and ensure protection of other closed mucosal folds not in direct contact, the contraceptive function of the contraceptive device being reversible.
2. Device according to claim 1, wherein the obturator comprises a silicone-based material.
3. Device according to claim 1, wherein the projecting forms are identical.
4. Device according to claim 1, wherein the projecting forms are different.
5. Device according to claim 1, wherein the projecting forms are regularly spaced along the obturator body.
6. Device according to claim 1, wherein the projecting forms are irregularly spaced along the obturator body.
7. Device according to claim 1, wherein the two stabilizing deformable stiffeners or wings are oppositely directed.
8. Device according to claim 7, further comprising a marker to be identified and located by a reading means using ultrasonography.
9. Device according to claim 7, further comprising a reach-through opening arranged behind the proximal one of the two stabilizing deformable stiffeners or wings and enabling device withdrawal.
10. Apparatus for fitting and introducing the device according to claim 1, comprising a sheath ensuring positioning of the two stabilizing deformable stiffeners or wings along the obturator body before anchoring the device.
11. Apparatus for fitting and introducing the device according to claim 10, further comprising a plunger for positioning the device by pushing until the obturator device is released in the isthmic part of the Fallopian tube by withdrawing the sheath.
12. Device according to claim 1, wherein the obturator comprises a non-recolonizable material.