1. A method of operating a static random access memory (SRAM) cell comprising first and second cross-coupled logic gates, wherein a first power supply line is connected with the first cross-coupled logic gate, wherein a second power supply line is connected with the second cross-coupled logic gate, the method comprising:
maintaining the first power supply line at a first power level during a first read operation;
permitting the first power supply line to transition from the first power level to a second power level during a first write operation to store a first logic state in the SRAM cell;
maintaining the second power supply line at the first power level during the first read operation; and
maintaining the second power supply line at the first power level during the first write operation.
2. The method of claim 1, wherein the first power level corresponds to a reference voltage and the second power level corresponds to a voltage less than the reference voltage.
3. The method of claim 1, wherein the first power level corresponds to a reference current and the second power level corresponds to a current less than the reference current.
4. The method of claim 1, further comprising maintaining the first power supply line at the first power level during a second write operation to store a second logic state in the SRAM cell.
5. The method of claim 4, further comprising maintaining the second power supply line at the first power level during the second write operation.
6. The method of claim 4, further comprising permitting the second power supply line to transition from the first power level to the second power level during the second write operation.
7. A method of operating a static random access memory (SRAM) cell comprising first and second cross-coupled logic gates, wherein first and second power supply lines are connected with the first cross-coupled logic gate, the method comprising:
maintaining the first power supply line at a first power level during a first read operation;
permitting the first power supply line to transition from the first power level to a second power level during a first write operation to store a first logic state in the SRAM cell;
maintaining the second power supply line at a third power level during the first read operation; and
maintaining the second power supply line at the third power level during the first write operation.
8. The method of claim 7, wherein the first power level corresponds to a first reference voltage and the third power level corresponds to a second reference voltage less than the first reference voltage.
9. The method of claim 7, wherein the first power level corresponds to a reference voltage and the second power level corresponds to a voltage less than the reference voltage.
10. The method of claim 7, wherein the first power level corresponds to a first reference current and the third power level corresponds to a second reference current less than the first reference current.
11. The method of claim 7, wherein the first power level corresponds to a reference current and the second power level corresponds to a current less than the reference current.
12. The method of claim 7, further comprising maintaining the first power supply line at the first power level during a second write operation to store a second logic state in the SRAM cell.
13. The method of claim 12, further comprising maintaining the second power supply line at the third power level during the second write operation.
14. The method of claim 12, further comprising permitting the second power supply line to transition from the third power level to a fourth power level during the second write operation.
15. The method of claim 14, wherein the third power level corresponds to a reference voltage and the fourth power level corresponds to a voltage less than the reference voltage.
16. The method of claim 15, wherein the third power level corresponds to a reference current and the fourth power level corresponds to a current less than the reference current.
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 elevator belt for an elevator installation, comprising:
a belt body in which a plurality of tensile carriers formed as strands or cables for transmission of a tension force in a longitudinal direction of the elevator belt is arranged; and
wherein a plurality of discrete profile bodies is embedded in the belt body and extends in the longitudinal direction of the elevator belt, each of said profile bodies is arranged between adjacent tensile carriers and spaces said adjacent tensile carriers from one another, said belt body, said tensile carriers, and said profile bodies are formed from different materials from each other and at least two of said profile bodies having different cross-sectional shapes from each other.
2. The elevator belt according to claim 1 wherein said tensile carriers are arranged in a common plane.
3. The elevator belt according to claim 1 wherein each of said profile bodies has a cross-sectional shape that is one of circular, oval, T-shaped, double T-shaped, U-shaped, triangular and quadrangular.
4. The elevator belt according to claim 1 wherein each said profile body is made from a thermoplastic synthetic material selected from a group consisting of polyamide, polyethylene, polyester, polyethyleneterephthalate, polycarbonate, polypropylene, polystyrol, polyacetal, polybutyleneterephthalate, polyethersulfone, polyphenylenesulfide, polytetrafluoroethylene, polyetheretherketone, polyimide, polyvinylchloride, and polyblends of several thermoplastic synthetic materials.
5. The elevator belt according to claim 1 wherein said belt body is made from an elastomer selected from a group consisting of polyurethane, polychloroprene, natural rubber and ethylene-propylene-diene rubber.
6. The elevator belt according to claim 1 wherein said belt body has a coating on a traction side for engagement with a drive wheel.
7. The elevator belt according to claim 1 wherein said belt body has on a traction side at least one wedge rib for engagement with a complementary groove of a drive wheel.
8. The elevator belt according to claim 1 wherein the belt body has on a rear side, opposite a traction side for engagement with a drive wheel, a back layer made from a thermoplastic synthetic material selected from a group consisting of polyamide, polyethylene, polyester, polyethyleneterephthalate, polycarbonate, polypropylene, polybutyleneterephthalate, polyethersulfone, polytetrafluorethylene, polyvinylchloride and polyblends of a thermoplastic synthetic material.
9. The elevator belt according to claim 8 wherein said tensile carriers and said profile body bear against said back layer of said belt body.
10. An elevator belt for an elevator installation, comprising:
a belt body in which a plurality of tensile carriers formed as strands or cables for transmission of a tension force in a longitudinal direction of the elevator belt is arranged in a common plane; and
wherein a plurality of discrete profile bodies is embedded in the belt body and extends in the longitudinal direction of the elevator belt, each of said profile bodies is arranged between adjacent ones of said tensile carriers and spaces said adjacent tensile carriers from one another, said belt body, said tensile carriers, and said profile bodies are formed from different materials from each other, said profile bodies having circular cross-sectional shapes with at least two of said profile bodies having different diameters from each other.
11. The elevator belt according to claim 10 wherein each said profile body is made from a thermoplastic synthetic material selected from a group consisting of polyamide, polyethylene, polyester, polyethyleneterephthalate, polycarbonate, polypropylene, polystyrol, polyacetal, polybutyleneterephthalate, polyethersulfone, polyphenylenesulfide, polytetrafluoroethylene, polyetheretherketone, polyimide, polyvinylchloride, and polyblends of several thermoplastic synthetic materials.
12. The elevator belt according to claim 10 wherein said belt body is made from an elastomer selected from a group consisting of polyurethane, polychloroprene, natural rubber and ethylene-propylene-diene rubber.
13. The elevator belt according to claim 10 wherein said belt body has a coating on a traction side for engagement with a drive wheel.
14. The elevator belt according to claim 10 wherein said belt body has on a traction side at least one wedge rib for engagement with a complementary groove of a drive wheel.
15. The elevator belt according to claim 10 wherein the belt body has on a rear side, opposite a traction side for engagement with a drive wheel, a back layer made from a thermoplastic synthetic material selected from a group consisting of polyamide, polyethylene, polyester, polyethyleneterephthalate, polycarbonate, polypropylene, polybutyleneterephthalate, polyethersulfone, polytetrafluorethylene, polyvinylchloride and polyblends of a thermoplastic synthetic material.
16. The elevator belt according to claim 15 wherein said tensile carriers and said profile body bear against said back layer of said belt body.
17. An elevator belt for an elevator installation, comprising:
a belt body in which a plurality of tensile carriers formed as strands or cables for transmission of a tension force in a longitudinal direction of the elevator belt is arranged in a common plane; and
wherein a plurality of discrete profile bodies is embedded in the belt body and extends in the longitudinal direction of the elevator belt, each of said profile bodies is arranged between adjacent ones of said tensile carriers and spaces said adjacent tensile carriers from one another, said belt body, said tensile carriers, and said profile bodies are formed from different materials from each other, said belt body having on a rear side, which is opposite a traction side for engagement with a drive wheel, a back layer formed from a thermoplastic synthetic material, and said tensile carriers and said profile bodies bear against said back layer
wherein one of a) at least two of said profile bodies have a circular cross-sectional shape, the shapes being of different diameters from each other, and b) at least two of said profile bodies have different cross-sectional shapes from each other.
18. The elevator belt according to claim 17 wherein each said profile body has a cross-sectional shape that is one of circular, oval, T-shaped, double T-shaped, U-shaped, triangular and quadrangular.
19. The elevator belt according to claim 17 wherein said back layer is made from a thermoplastic synthetic material selected from a group consisting of polyamide, polyethylene, polyester, polyethyleneterephthalate, polycarbonate, polypropylene, polybutyleneterephthalate, polyethersulfone, polytetrafluorethylene, polyvinylchloride and polyblends of a thermoplastic synthetic material.