CARD CONTROL OF RADIO TELEPHONE

• US 3,581,019 A
• Filed: 07/30/1968
• Issued: 05/25/1971
• Est. Priority Date: 07/30/1968
• Status: Expired due to Term

• Current Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Original Assignee: Donald P. Ryan
• Inventors: Ryan, Donald P.
• Application Number:
  US04/748,813
• Time in Patent Office: 1,029 Days
• US Class Current: 455/558
• CPC Class Codes: H04M 1/675 the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/183 Processing at user equipment or user record carrier

Abstract

Card control of radiotelephone facility. A matrix circuit receives a card, which is apertured, punched or embossed in accordance with the number which the radiotelephone equipment is to respond, the channels in which it is to be operative, to complete transmitter and receiver circuits therefor, and disable channels not used and otherwise control use of the facility by authorized persons. Other features of the invention are disclosed in the specification and drawings.

Claims

1. In a card controlled telephone number responding device for rendering a radiotransceiver in a radiotelephone system responsive to a received call number matching a number stored on a card, said radio transceiver including means for receiving a call signal bearing information representing the digits of a number stored on said card, means for converting said call signal to sets of dial pulses, in the sequence received digit for received digit, counter means for converting each set of said dial pulse sets to a digit corresponding to the number of said dial pulses, said counter having an output corresponding to each digit, a crossbar matrix having rows and columns of matrix crosspoints, means connecting one side of said crossbar matrix to the outputs of said counter means, digit for digit, a call number bearing control card, means guiding said control card into registry with said crossbar matrix, said control card having a plurality of matrix positions corresponding in number and position to the number and positions of said matrix cross-points, selected ones of said positions on said card having means for making a cross-point connection in said crossbar matrix, digit sequence storage means, said digit sequence storage means comprising a plurality of cascaded digit storage register circuits, each having as one input an output from said matrix and each of said trigger circuits except the first being rendered operable in sequence from the second to the last on operation of a preceding trigger and an output from said matrix at a corresponding cross-point made by said means on said card for making a cross-point connection at a selected position, respectively, an alarm device actuated on actuation of the last of said trigger circuits, means for mounting said radio transceiver on a vehicle having a key-operated ignition switch, and means connectable in circuit with said ignition switch for preventing insertion of said control card into operative relationship with said crossbar matrix unless the ignition switch has been turned on by a key therein.

2. The invention defined in claim 1, wherein said means includes a reciprocatable plunger normally blocking passage of said control card to operative relation with said crossbar matrix, a solenoid for actuating said plunger, conductors connecting said solenoid in circuit with a power supply on the vehicle, a switch in series circuit with said conductors, said control card having an interlock aperture therein whereby said plunger traverses said interlock aperture upon deenergization of said solenoid to prevent withdrawal of said card upon opening of said ignition switch and prevents introduction of said card into said operative relationship when said ignition key switch has not been actuated.

3. In a radio telephone system improvements in devices for the conditioning of an individual unit in said system to respond only to an assigned telephone number comprising, an electromechanical call number selection matrix having a plurality of opposed conductors on opposite sides thereof, means operating in response to received dial signals for supplying digits in accordance with received numbers to conductors on one side of said matrix, an apertured insulaTed card insertable into operative relationship between opposed conductors and permitting selected ones thereof to make contact through permutated aperture positions in said card, a digit register on the other side of said number selection matrix for sequential registration of digits supplied thereto through apertures in said card, alarm means operated in response to registration of the assigned number in said digit register, means mounting said individual unit on a vehicle having a key-operated ignition switch, and means connectable in circuit with said ignition switch for preventing insertion of said insulated card into operative relationship unless said ignition switch has been turned on.