1. A harness assembly for suspending a user, said harness assembly comprising:
a support including a back plate having a shape corresponding to a user’s back for supporting the user’s back in a predetermined configuration,
a torso connector connected to the support for engaging the user’s torso and releasably fastening the support to the user’s torso adjacent the user’s back;
a leg loop connected to the support and sized for surrounding the user’s leg to fasten the support to the user’s leg; and
a suspender extendable outward from the support for suspending the user fastened to the support.
2. The harness assembly of claim 1, wherein the back plate has a vertical length extending in use along a user’s spine from a lower portion adjacent a user’s waist upward to an upper position adjacent a user’s scapula.
3. The harness assembly of claim 1, wherein the back plate has an S-shaped front surface contour to conform to the user’s back.
4. The harness assembly of claim 1, wherein the back plate comprises a resiliently flexible material.
5. The harness assembly of claim 1, wherein the back plate comprises a material having a substantially uniform thickness.
6. The harness assembly of claim 1, wherein the torso connector comprises at least one waist strap for surrounding the waist of the user.
7. The harness assembly of claim 6, wherein the suspender comprises a shoulder strap connected to the waist strap and looped above a shoulder of the user.
8. The harness assembly of claim 7, wherein the shoulder strap extends from the leg loop.
9. The harness assembly of claim 7, wherein the shoulder strap comprises a suspension ring configured for releasably attaching to a suspender.
10. The harness assembly of claim 1, wherein the back plate is selected from a group of interchangeable back plates varying in stiffness.
11. A harness assembly for supporting a back of a user comprising:
a support including a back plate having a shape corresponding to a user’s back for supporting the user’s back in a predetermined configuration, the back plate having a vertical length extending in use along a user’s spine from a lower portion adjacent a user’s waist upward to an upper position adjacent a user’s scapula;
a torso connector connected to the support for engaging the user’s torso and releasably fastening the support to the user’s torso adjacent the user’s back; and
a shoulder strap connected to the torso connector and looped above a shoulder of the user.
12. A physical therapy support device comprising:
a framework sized for at least partially surrounding a user, the framework having a frame member and a plurality of legs extending downward from the frame member to casters positioned at lower ends of the legs; and
a hoist secured to the frame member for adjustably suspending the user within the framework, the hoist comprising a suspension connector releasably connectable to the user and a suspension cable connected to the connector and adapted to selectively raise and lower the suspension connector thereby raising and lowering the user within the framework when connected thereto.
13. The physical therapy support device of claim 12, wherein the hoist further comprises a winch mounted on the frame member and connected to the suspension cable for raising and lowering the suspension cable to raise and lower the suspension connector.
14. The physical therapy support device of claim 12, wherein the hoist further comprises a track mounted on the frame member extending between a forward end and a rearward end, and a guide for holding the suspension cable, the guide configured to travel along the track to adjust a position of the user relative to the framework.
15. The physical therapy support device of claim 14, wherein the user is raised and lowered relative to the framework as the guide travels along the track.
16. The physical therapy support device of claim 14, wherein the guide is biased toward the forward end of the track.
17. The physical therapy support device of claim 14, wherein the hoist further comprises a winch mounted on the frame member, the winch including a spool operatively connected to the guide for moving the guide along the track.
18. The physical therapy support device of claim 17, further comprising a yoke mounted on the guide and a guide cable attached to the yoke, said guide cable being wound on the spool so that the yoke moves parallel to the track as the winch winds and unwinds the guide cable.
19. The physical therapy support device of claim 18, wherein:
the suspension cable extends from the yoke forward to a cable guide mounted on the frame member and from the cable guide rearward to a mount mounted on the frame member; and
the support device further comprises a harness guide mounted on the suspension cable between the cable guide and the mount, and a harness assembly suspended from the harness guide for holding a user, said assembly being raised and lowered as the yoke moves parallel to the track.
20. The physical therapy support device of claim 19, wherein the harness assembly comprises:
a back plate having a shape corresponding to a user’s back for supporting the user’s back in a predetermined configuration,
a torso connector for releasably fastening the support to the user’s torso adjacent the user’s back; and
a physical therapy support device operatively connected to the back plate for suspending harness assembly from the harness guide.
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 apparatus comprising:
a digitally-controlled oscillator (DCXO) to generate a reference frequency signal, the DCXO including a capacitor array configured to adjust the reference frequency signal by switching in and out capacitors of the capacitor array to compensate for drift in the reference frequency signal;
a local oscillator coupled to receive the reference frequency signal and to provide an output signal based on the reference frequency signal; and
a frequency correction module, coupled to the DCXO and to the local oscillator, to provide a first compensation signal to control the capacitor array and to provide a second compensation signal to the local oscillator to adjust for variations of the reference frequency signal remaining in the reference frequency signal after performing compensation in the digitally-controlled oscillator.
2. The apparatus of claim 1, wherein the local oscillator to utilize a phase-locked loop to generate the output signal.
3. The apparatus of claim 2, wherein the local oscillator to provide the output as a local oscillation signal to a radio frequency (RF) stage of a communication device.
4. The apparatus of claim 2, wherein the local oscillator to provide the output as a local oscillation signal to a radio frequency (RF) stage of a mobile phone.
5. The apparatus of claim 2, wherein the local oscillator to provide the output to generate clock signals to a digital stage of a communication device.
6. The apparatus of claim 2, wherein the local oscillator to provide the output to generate clock signals to a digital stage of a mobile phone.
7. The apparatus of claim 1, wherein the first compensation signal is applied to the capacitor array to control the switching in and out capacitors of the capacitor array.
8. The apparatus of claim 7, wherein the first and second compensation signals are utilized to compensate for overlap or discontinuity of the reference frequency signal caused by switching the capacitor array.
9. An apparatus comprising:
a digitally-controlled crystal oscillator (DCXO) to generate a reference frequency signal, the DCXO including a capacitor array configured to adjust the reference frequency signal by switching in and out capacitors of the capacitor array to compensate for drift in the reference frequency signal;
a phase-locked loop (PLL) coupled to receive the reference frequency signal and to provide an output signal based on the reference frequency signal; and
a frequency correction module, coupled to the DCXO and the PLL, to provide a first compensation signal to the capacitor array to compensate for drift of the reference frequency signal by selecting capacitors of the capacitor array, in which the first compensation signal also to adjust for overlap or discontinuity of the reference frequency signal caused by switching capacitors in the capacitor array, the frequency correction module to also provide a second compensation signal to the PLL to adjust for variations of the reference frequency signal remaining in the reference frequency signal after performing compensation for the DCXO in the capacitor array.
10. The apparatus of claim 9, wherein the PLL to provide the output signal as a local oscillation signal to a radio frequency (RF) receiver of a communication device.
11. The apparatus of claim 9, wherein the local oscillator to provide the output signal to generate clock signals to a digital stage of a communication device.
12. The apparatus of claim 10, further including a baseband module to provide baseband processing for the communication device, wherein the frequency correction module is part of the baseband module.
13. The apparatus of claim 12, wherein the output signal from the PLL is also coupled as a reference input to a second PLL, in which the second PLL to provide a transmit local oscillation signal to a radio frequency (RF) transmitter of the communication device.
14. The apparatus of claim 13, wherein the communication device is a mobile phone.
15. The apparatus of claim 9, wherein the capacitor array includes a coarse adjustment capacitor array and a fine adjustment capacitor array to coarse adjust and fine adjust the DCXO.
16. The apparatus of claim 15, wherein the first compensation signal adjusts for overlap or discontinuity when switching between the coarse adjustment capacitor array and the fine adjustment capacitor array.
17. A method comprising:
providing a first compensation signal from a frequency correction module to a capacitor array of a digitally-controlled crystal oscillator (DCXO) to compensate for drift of a reference frequency signal generated by the DCXO by selecting capacitors of the capacitor array, in which the first compensation signal also to adjust for overlap or discontinuity of the reference frequency signal caused by switching capacitors in the capacitor array; and
providing a second compensation signal from the frequency correction module to a phase-locked loop (PLL) that receives the reference frequency signal from the DCXO to adjust for variations of the reference frequency signal remaining in the reference frequency signal after performing compensation for the DCXO by the capacitor array.
18. The method of claim 17, wherein the first compensation signal provides control words to a digital-to-analog converter that switches the capacitors of the capacitor array.
19. The method of claim 17, wherein the first compensation signal is based on a curve that adjusts for offsets when switching the capacitors in the capacitor array.
20. The method of claim 17, wherein the first compensation signal is based on a curve that adjusts for offsets when switching the capacitors to provide coarse adjustment in the capacitor array.