Card reader data logic with position indication and error detection

Claim 2

A card reader system in combination with a plurality of cards having information indicia thereon and adapted to be inserted into said system, said system comprising: means for indicating whether each of said plurality of cards is in a first or a second position, means for detecting said information indicia to produce a plurality of first signals corresponding to said information indicia, means responsive to said indicating means and to said detecting means for generating a plurality of second signals, said plurality of second signals being less in number than said plurality of first signals, and means responsive to said detecting means and said indicating means for producing an error signal indicating that said detecting means has detected incorrect information.

Claim 3

A system as defined in claim 1 wherein said means for indicating provides a third signal when said card is in said first position and a fourth signal when said card is in said second position.

Claim 4

A system as defined in claim 2 wherein said generating means is responsive to both said third and said fourth signals of said indicating means and wherein said generating means includes first means responsive to said third signals and second means responsive to said fourth signals and wherein said second plurality of signals is identical whether generated by said first or said second responsive means.

Claim 5

A system as defined in claim 3 wherein said first position is a face up position and said second position is a face down position.

Claim 6

Card reader data logic for reading information from a stack of punch cards having coded information stated thereon in spaced columns after a leading edge to a data processor, said cards provided in either a first or second position, said logic comprising: a first plurality of gates for controlling the transfer of coded information read from said cards in said first position, a second plurality of gates for controlling the transfer of coded information read from said cards in said second position, means for transmitting a signal upon sensing said leading edge of said card, and means responsive to said transmitting means for disabling either said first of said second plurality of gates, said disabling means allowing a transfer of information from said card through the undisabled plurality of gates, whereby said information from said punched cards is provided to said data processor.

Claim 7

Card reader data logic for reading information from a stack of punch cards having coded information stated thereon in spaced columns after a leading edge to a data processor, said cards provided in either a first or second position, said logic comprising: a first plurality of gates for controlling the transfer of coded information read from said cards in said first position, a second plurality of gates for controlling the transfer of coded information read from said cards in said second position, means for transmitting a signal upon sensing said leading edge of said card, and means responsive to said transmitting means for disabling either said first of said second plurality of gates, said disabling means allowing a transfer of information from said card through the undisabled plurality of gates, whereby said information from said punched cards is provided to said data processor.

Claim 8

Data logic as defined in claim 5 and further including: first means responsive to one of said plurality of first gates for providing a compressed code when said cards are in said first position and for providing a checking code when said cards are in said second position, second means responsive to one of said second plurality of gates for providing a compressed code when said cards are in said second position and for providing a checking code when said cards are in said first position, and wherein a predetermined number of said first and said second plurality of gates are coupled to said first and second providing means for providing a compressed binary code.

Claim 9

Data logic as defined in claim 6 and further including: error detecting means responsive to said first providing means, said second providing means and said transmitting means for providing an error signal indicative of incorrect coded information in said column on said card.

Claim 10

A card reader system for reading information from a stack of punched cards having coded information stored therein in spaced columns, said system comprising: means for detecting said coded information, means responsive to said detecting means for providing first signals corresponding to said coded inforMation, means for indicating a first or a second position of each of said cards, a first plurality of gates each responsive to one of said first signals of said detecting means and said indicating means, for translating said first signals to second signals, a second plurality of gates responsive to a plurality of said first signals from said detecting means and said indicating means for compressing said plurality of first signals to a plurality of third signals, said plurality of signals being less in number than said plurality of first signals, a third plurality of gates responsive to one of said third signals and said indicating means for translating said third signals to fourth signals, and a fourth plurality of gates responsive to a pair of said third signals for providing a fifth signal indicative of an error condition.

Claim 11

A card reader system for reading information from a stack of punched cards having coded information stored therein in spaced columns, said system comprising: means for detecting said coded information, means responsive to said detecting means for providing first signals corresponding to said coded inforMation, means for indicating a first or a second position of each of said cards, a first plurality of gates each responsive to one of said first signals of said detecting means and said indicating means, for translating said first signals to second signals, a second plurality of gates responsive to a plurality of said first signals from said detecting means and said indicating means for compressing said plurality of first signals to a plurality of third signals, said plurality of signals being less in number than said plurality of first signals, a third plurality of gates responsive to one of said third signals and said indicating means for translating said third signals to fourth signals, and a fourth plurality of gates responsive to a pair of said third signals for providing a fifth signal indicative of an error condition.

Claim 12

The system as defined in claim 8 wherein said indicating means provides a face up signal when said card is in said first position and a face down signal when said card is in a said second position.

Claim 13

The system as defined in claim 9 wherein said second plurality of gates comprises a first set of gates responsive to a face up signal of said indicating means and a second set of gates responsive to a face down signal of said indicating means and wherein each of said fourth plurality of gates is responsive to one of said third signals from said first set of said second gates and one of said third signals from said second set of said second gates.

Claim 14

The system as defined in claim 10 wherein said one of said first set of second gates and said said one of said second set of second gates are mutually complementary.

Claim 15

The system as defined in claim 11 and further including: a fifth plurality of gates coupled to said first and third plurality of gates for providing a plurality of sixth signals representing said coded information, and means responsive to said fifth plurality of gates for storing said sixth signals.

Claim 16

The system as defined in claim 12 and further including: a data processor, and means for strobing said storing means, said strobing means providing said sixth signals to said data processor, said sixth signals indicating a character provided in a corresponding column of said punched card of said coded information.