초록 ▼

An optical information recording/reproducing apparatus enabling fine actuation of almost several nm order for performing the tracking correction includes a pair of fixed electrodes so as to put a probe therebetween in a direction perpendicular to the direction of data row arrangement on a recording

An optical information recording/reproducing apparatus enabling fine actuation of almost several nm order for performing the tracking correction includes a pair of fixed electrodes so as to put a probe therebetween in a direction perpendicular to the direction of data row arrangement on a recording medium and a voltage applying medium for applying the voltage between the respective fixed electrodes and the probe. The position of the tip end of the probe is controlled by the action of electrostatic attractive force between the fixed electrodes and the probe caused by applying the voltage thereacross. The probe is constructed with center core clad therearound. The base part is fixed and the sharpened tip end is free, as a so-called cantilever structure. The apparatus further enables to obtain the tracking error. Laser light is emitted from the tip end and radiated onto the information recording medium. The light reflected on the recording medium is converted optoelectrically. The average value of the electric signal is outputted as the tracking error signal. An information recording/reproducing apparatus capable of improving the stability of the control voltage for tracking the probe includes control voltages and bias voltage applying members respectively independent from each other.

대표청구항 ▼

An optical information recording/reproducing apparatus enabling fine actuation of almost several nm order for performing the tracking correction includes a pair of fixed electrodes so as to put a probe therebetween in a direction perpendicular to the direction of data row arrangement on a recording

An optical information recording/reproducing apparatus enabling fine actuation of almost several nm order for performing the tracking correction includes a pair of fixed electrodes so as to put a probe therebetween in a direction perpendicular to the direction of data row arrangement on a recording medium and a voltage applying medium for applying the voltage between the respective fixed electrodes and the probe. The position of the tip end of the probe is controlled by the action of electrostatic attractive force between the fixed electrodes and the probe caused by applying the voltage thereacross. The probe is constructed with center core clad therearound. The base part is fixed and the sharpened tip end is free, as a so-called cantilever structure. The apparatus further enables to obtain the tracking error. Laser light is emitted from the tip end and radiated onto the information recording medium. The light reflected on the recording medium is converted optoelectrically. The average value of the electric signal is outputted as the tracking error signal. An information recording/reproducing apparatus capable of improving the stability of the control voltage for tracking the probe includes control voltages and bias voltage applying members respectively independent from each other. Card modules, comprising: a frame including one or more slots for receiving PC Card modules; a module connector comprised in said frame including a plurality of contacts; a socket connector attached to said frame adapted for connection to a mating socket, wherein said socket connector is electrically connected to said plurality of contacts on said module connector; and one or more PC Card modules adapted for removable insertion into said one or more slots of said frame, wherein each of said one or more PC Card modules is inserted into one of said one or more slots, said electrical contacts on said PC Card module electrically contact at least a plurality of said plurality of contacts on said module connector, and wherein each of said PC Card modules comprises: a molded frame having electrical contacts; a composite substrate; a cover plate; a laminate circuit; film adhesive: and a plurality of semiconductors on said substrate. 2. The modular PC Card of claim 1, wherein said modular PC Card complies with the PC Card Standard promulgated by the Personal Computer Memory Card International Association. 3. The modular PC Card of claim 1, wherein said socket connector is adapted for insertion into a PC Card adapter socket of a computer system. 4. The modular PC Card of claim 1, wherein said socket connector is adapted for insertion into a PC Card adapter socket of a personal digital assistant. 5. The modular PC Card of claim 1, wherein said frame includes one or more slot openings, wherein said one or more PC Card modules are insertable through said one or more slot openings to be received in said one or more slots. 6. The modular PC Card of claim 1, wherein said frame includes first and second opposite sides and first and second opposite ends, wherein said socket connector is comprised on said first end, and wherein said frame includes said one or more slot openings on said second end of said frame. 7. The modular PC Card of claim 6, wherein said frame includes a telephone connector on said second end of said frame. 8. The modular PC Card of claim 6, wherein said frame includes a network connector on said second end of said frame. 9. The modular PC Card of claim 1, wherein said frame includes first and second opposite sides and first and second opposite ends, wherein said connector is comprised on said first end, and wherein one or more of said one or more slots are comprised on each of said first and second opposite sides. 10. The modular PC Card of claim 9, wherein said frame includes a telephone connector on said second end of said frame. 11. The modular PC Card of claim 9, wherein said frame includes a network connector on said second end of said frame. 12. The modular PC Car of claim 1, wherein said frame includes first and second opposite sides and first and second opposite ends, wherein said socket connector is comprised on said first side. 13. The modular PC Card of claim 1, wherein said frame includes first and second opposite sides and first and second opposite ends, wherein said modular connector is positioned approximately central to said frame approximately equidistant from said first and second opposite sides, wherein said module connector includes contacts on either side of said module connector. 14. The modular PC Card of claim 13, further comprising a rotatable cam positioned with said modular connector inside said frame, wherein said rotatable cam is rotated to move said contacts on said module connector outward to electrically connect said contacts on said module connector to said contacts on one of said one or more PC Card modules when said PC Card module is inserted into one of said one or more slots in said modular PC Card. 15. The modular PC Card of claim 1, further comprising a circuit board comprised within said frame, wherein said circuit board interfaces said one or more PC Card modules to said socket connector. 16. The modular PC Card of claim 1, wherein said frame includes only one slot a nd said modular PC Card is adapted to receive only one PC Card module. 17. The modular PC Card of claim 1, wherein said frame includes only two slots and said modular PC Card is adapted to receive two PC Card modules. 18. The modular PC Card of claim 1, wherein said frame includes four slots and said modular PC Card is adapted to receive four PC Card modules. 19. A PC Card, comprising: a PC Card frame including at least one slot for removably receiving modules within said PC Card frame; a socket connector attached to said PC Card frame for mating to a PC Card socket; and at least one module adapted for removable insertion into said slot of said PC Card frame, wherein said at least one module comprises: a frame having a floor member defining an interior portion; a plurality of electrical contacts along an edge of said frame; a composite substrate comprising: a circuit layer, a substrate cover plate, and means for adhering said circuit layer to said substrate cover plate; a plurality of semiconductor devices mounted to said composite substrate to form a composite semiconductor substrate subassembly, wherein said composite substrate is attached to said frame such that at least a portion of said composite semiconductor substrate subassembly is received in said interior portion of said frame and wherein said plurality of semiconductor devices are electrically coupled together; and electrical connecting means for electrically connecting said semiconductor devices on said composite substrate to said electrical contacts on said edge of said frame. 20. The modular PC Card of claim 19, further comprising: a module connector comprised in said frame including a plurality of contacts; wherein said socket connector is electrically connected to said plurality of contacts on said module connector; and wherein said one or more PC Card modules includes electrical contacts, wherein when one of said one or more PC Card modules is inserted into one of said one or more slots, said electrical contacts on said PC Card module electrically contact at least a plurality of said plurality of contacts on said module connector. 21. The modular PC Card of claim 19, wherein said modular PC Card complies with the PC Card Standard promulgated by the Personal Computer Memory Card International Association. 22. A computer system comprising: a computer housing including a PC Card adapter slot and a PC Card connector for receiving a PC Card; and a modular PC Card, comprising: a frame including one or more slots for receiving PC Card modules; for each of said one or more slots, a module connector including a plurality of electrical contacts; a PCMCIA connector attached to said frame adapted for connection to said PC Card connector, wherein said PCMCIA connector is electrically connected to said plurality of electrical contacts on said module connector of each of said slots; and one or more PC Card modules adapted for removable insertion into said one or more slots of said modular PC Card, wherein each of said one or more PC Card modules includes electrical contacts, wherein when one of said one or more modules is inserted into one of said one or more slots, said electrical contacts on said PC Card module electrically contact at least a plurality of contacts on said module connector and wherein said one or more PC Card modules each comprise: a frame having a floor member defining an interior portion; a plurality of electrical contacts along an edge of said frame; a composite substrate comprising: a circuit layer, a substrate cover plate, and means for adhering said circuit layer to said substrate cover plate; a plurality of semiconductor devices mounted to said composite substrate to form a composite semiconductor substrate subassembly, wherein said composite substrate is attached to said frame such that at least a portion of said composite semiconductor substrate subassembly is received in said interior portion of said frame and w herein said plurality of semiconductor devices are electrically coupled together; and electrical connecting means for electrically connecting said semiconductor devices on said composite substrate to said electrical contacts on said edge of said frame. cording to claim 1, wherein, once said power switch has been switched on, said compensation signal is a linearly rising signal. 9. The circuit configuration according to claim 1, wherein, once said power switch has been switched on, said compensation signal is a signal rising in accordance with a square law. 10. The circuit configuration according to claim 1, wherein, once said power switch has been switched on, said compensation signal is a signal rising in accordance with a power function. 11. The circuit configuration according to claim 1, wherein: said compensation signal has a profile; and at least one of said constant reference signal and said profile of the compensation signal is adjustable. 12. The circuit configuration according to claim 1, wherein: said compensation signal has a profile; and at least one of said constant reference signal and said profile of the compensation signal adjust. 13. The circuit configuration according to claim 1, wherein: a first non-reactive resistor is supplied with a constant reference voltage; a second non-reactive resistor is supplied with an alternating signal alternating in time with said clock frequency; a third non-reactive resistor is connected to a reference ground potential; a fourth non-reactive resistor is connected to said reference ground potential; said compensation signal source is a differential amplifier having: a non-inverting input: supplied with said constant reference voltage through said first non-reactive resistor; supplied with said alternating signal through said second non-reactive resistor; and connected through said third non-reactive resistor to said reference ground potential; an inverting input connected to said reference ground potential through said fourth non-reactive resistor; and an output producing an output voltage; a non-reactive coupling resistor is connected to said inverting input and to said output and feeds said output back to said inverting input; a non-reactive output resistor is connected to said output; a reference voltage is tapped off across said non-reactive output resistor; and an output capacitor connects said non-reactive output resistor to said reference ground potential. 14. The circuit configuration according to claim 13, including a switch connected in parallel with said non-reactive output resistor and, when closed, bridges said non-reactive output resistor, said switch being closed when said output voltage is low and being opened when said output voltage is high. 15. The circuit configuration according to claim 14, wherein said switch is a transistor. 16. The circuit configuration according to claim 15, wherein said switch is opened and closed in time with said power switch. 17. The circuit configuration according to claim 13, including a switch connected in parallel with a compensating resistor and, when closed, bridges said compensating resistor, said switch being closed when said output voltage is low and being opened when said output voltage is high. 18. The circuit configuration according to claim 1, wherein: a first non-reactive resistor is supplied with a constant reference voltage; a second non-reactive resistor is provided; a third non-reactive resistor is connected to a reference ground potential; a bipolar transistor is connected in series with said second non-reactive resistor and has a base; a clock voltage signal is connected to and drives said base; said compensation signal source is a differential amplifier having: a non-inverting input: supplied with said constant reference voltage through said first non-reactive resistor; connected through said third non-reactive resistor to said reference ground potential; and with aid of said bipolar transistor, is connected to said reference-ground potential in time with said clock frequency through said second non-reactive resistor; an inverting input; and an output producing an output voltage; a non-reactive output resi stor is connected to said inverting input and to said output and feeds said output back to said inverting input; a reference voltage is tapped off across said non-reactive output resistor; and an output capacitor connects said non-reactive output resistor to said reference ground potential. 19. The circuit configuration according to claim 18, including a switch connected in parallel with said non-reactive output resistor and, when closed, bridges said non-reactive output resistor, said switch being closed when said output voltage is low and being opened when said output voltage is high. 20. The circuit configuration according to claim 19, wherein said switch is a transistor. 21. The circuit configuration according to claim 20, wherein said switch is opened and closed in time with said power switch. 22. The circuit configuration according to claim 18, including a switch connected in parallel with a compensating resistor and, when closed, bridges said compensating resistor, said switch being closed when said output voltage is low and being opened when said output voltage is high. 23. The circuit configuration according to claim 1, wherein: said constant reference signal is a constant reference voltage; a first non-reactive resistor is supplied with said constant reference voltage; a second non-reactive resistor is supplied with an alternating signal alternating in time with said clock frequency; a third non-reactive resistor is connected to a reference ground potential; a fourth non-reactive resistor is connected to said reference ground potential; said compensation signal source is a differential amplifier having: a non-inverting input: supplied with said constant reference voltage through said first non-reactive resistor; supplied with said alternating signal through said second non-reactive resistor; and connected through said third non-reactive resistor to said reference ground potential; an inverting input connected to said reference ground potential through said fourth non-reactive resistor; and an output producing an output voltage; a non-reactive coupling resistor is connected to said inverting input and to said output and feeds said output back to said inverting input; a non-reactive output resistor is connected to said output; said reference signal is a reference voltage tapped off across said non-reactive output resistor; and an output capacitor connects said non-reactive output resistor to said reference ground potential. 24. The circuit configuration according to claim 1, wherein: said constant reference signal is a constant reference voltage; a first non-reactive resistor is supplied with said constant reference voltage; a second non-reactive resistor is provided; a third non-reactive resistor is connected to a reference ground potential; a bipolar transistor is connected in series with said second non-reactive resistor and has a base; a clock voltage signal is connected to and drives said base; said compensation signal source is a differential amplifier having: a non-inverting input: supplied with said constant reference voltage through said first non-reactive resistor; connected through said third non-reactive resistor to said reference ground potential; and with aid of said bipolar transistor, is connected to said reference-ground potential in time with said clock frequency through said second non-reactive resistor; an inverting input; and an output producing an output voltage; a non-reactive output resistor is connected to said inverting input and to said output and feeds said output back to said inverting input; said reference signal is a reference voltage tapped off across said non-reactive output resistor; and an output capacitor connects said non-reactive output resistor to said reference ground potential. 25. A switch-mode power supply controller, comprising: a circuit configuration according to claim 1. 26. The switch-mode power supply controller acc