Elevator system

Claim 2

An elevator system comprising: a structure having a plurality of landings, an elevator car mounted in said structure to serve at least certain of the landings, call registering means for registering landing related calls for elevator service, first serializing means responsive to said call registering means, said first serializing means serializing said landing related calls to provide a first serial signal in which the calls for elevator service appear according to the landings to which they are related, second serializing means responsive to said first serial signal, said second serializing means providing a second serial signal which is a higher speed image of said first serial signal, and means responsive to said second serial signal for controlling said elevator car to serve the calls for elevator service.

Claim 3

The elevator system of claim 1 wherein the first serial signal includes a plurality of landing related time intervals which occur at a predetermined first rate, and the second serial signal includes a plurality of landing related time intervals which occurs at a predetermined second rate, with the first and second rates being selected such that all of the landing related time intervals of the second serial signal occur at least once during each landing related time interval of the first serial signal.

Claim 4

The elevator system of claim 1 wherein the first serial signal includes a plurality of landing related time intervals which occur at a predetermined first rate, with a landing related call occupying a predetermined portion of the time interval related to the same landing, and the second serial signal includes a plurality of landing related time intervals which occur at a predetermined second rate, with the first and second rates being selected such that all of the landing related time intervals of the second serial signal occur at least once during the predetermined portion of a time interval of the first serial signal which may include a call for elevator service.

Claim 5

The elevator system of claim 1 wherein the first and second serializing means include first and second counting means, respectively, which clock the first and second serial signals, respectively.

Claim 6

The elevator system of claim 4 wherein the first counting means counts through a predetermined group of numbers at a first predetermined rate, with the landings being associated with predetermined numbers of the group, the second counting means counts through the predetermined group of numbers at a second predetermined rate, said second predetermined rate being selected such that the second counting means counts through the group of numbers at least once while the first counting means is on each number of the group, and means coupling the first serial signal and the second serializing means during the time the second counting means is on the same number as the first counting means, to update the second serial signal at the rate of the first counting means.

Claim 7

The elevator system of claim 4 wherein the first counting means counts through a predetermined group of numbers at a first predetermined rate, with the landings being associated with predetermined counts of the group, and with a call for elevator service associated with a landing appearing in the first serial signal during the count of the first counting means associated with this landing.

Claim 8

The elevator system of claim 6 wherein the second counting means counts through the predetermined group of numbers at least once during the portion of each count of the first counting means which corresponds to the location where a call for elevator service for an associating landing would be located in the first serial signal, and means coupling the first serial signal and the second serializing means when the counts of the first and second counting meAns are equal, to update the second serial signal during each count of the first counting means.

Claim 9

An elevator system, comprising: a structure having a plurality of landings, an elevator car mounted in said structure to serve the landings, call registering means for registering landing related calls for elevator service, first counting means repetitively counting through a predetermined group of numbers at a first predetermined rate, each of said landings being associated with a different count, first serializing means responsive to said call registering means and to said first counting means, said first serializing means providing a first serial signal in which a call for elevator service appears when the first counting means is on the count associated with the same landing the call for serivce is associated with, rate converter means providing a second serial signal which is a higher speed image of the first serial signal, and selector means responsive to said second serial signal for controlling said elevator car to serve calls for elevator service.

Claim 10

An elevator system, comprising: a structure having a plurality of landings, an elevator car mounted in said structure to serve the landings, call registering means for registering landing related calls for elevator service, first counting means repetitively counting through a predetermined group of numbers at a first predetermined rate, each of said landings being associated with a different count, first serializing means responsive to said call registering means and to said first counting means, said first serializing means providing a first serial signal in which a call for elevator service appears when the first counting means is on the count associated with the same landing the call for serivce is associated with, rate converter means providing a second serial signal which is a higher speed image of the first serial signal, and selector means responsive to said second serial signal for controlling said elevator car to serve calls for elevator service.

Claim 11

The elevator system of claim 8 wherein the rate converter means includes second counting means repetitively counting through the predetermined group of numbers at a second predetermined rate which is selected such that the second counting means counts through the group of numbers at least once during the time a call for elevator service appears in the first serial signal, comparator means responsive to the first and second counting means and providing a signal when the counts of the first and second counting means are equal, and second serializing means providing the high speed image of the first serial signal in response to the first serial signal, to said second counting means, and to the signal provided by said comparator means.

Claim 12

The elevator system of claim 9 wherein the second serializing means includes a shift register clocked by the second counting means.

Claim 13

The elevator system of claim 9 wherein the second serializing means includes an input register for storing calls for elevator service from the first serial signal and a shift register, with said input and shift registers being clocked by the second counting means, and wherein a call for elevator service stored in the input register is transferred into the shift register when the comparator means provides a signal indicating the counts of the first and second counting means are equal.

Claim 14

An elevator system, comprising: a structure having a plurality of landings, an elevator car mounted for movement in said structure to serve at least certain of the landings, call registering means for registering landing related calls for elevator service, first serializing means serializing said landing related calls to provide a first serial signal for transmission of calls at a rate consistent with system electrical noise, rate converter means providing a second serial signal which is a higher speed image of said first serial signal for transmission of calls at a rate consistent with the maximum speed of the elevator car and the minimum distance between two adjacent landings, and floor selector means responsive to said second serial signal for controlling the operation of said elevator car to serve said landing related calls for elevator service.

Claim 15

An elevator system, comprising: a structure having a plurality of landings, an elevator car mounted for movement in said structure to serve at least certain of the landings, call registering means for registering landing related calls for elevator service, first serializing means serializing said landing related calls to provide a first serial signal for transmission of calls at a rate consistent with system electrical noise, rate converter means providing a second serial signal which is a higher speed image of said first serial signal for transmission of calls at a rate consistent with the maximum speed of the elevator car and the minimum distance between two adjacent landings, and floor selector means responsive to said second serial signal for controlling the operation of said elevator car to serve said landing related calls for elevator service.

Claim 16

The elevator system of claim 12 wherein the rate of the second serial signal is selected such that the second serial signal presents signals relative to all of the landings served by the elevator car while the first serial signal is presenting a signal relative to a single landing.

Claim 17

The elevator system of claim 12 wherein the rate converter means includes second serializing means and means effectively coupling the first serial signal and second serializing means to update the second serial signal only when the first and second serial signals are simultaneously presenting information relative to the same landing.