Apparatus to furnish instantaneous vehicle position in terms of latitude and longitude coordinates

• US 3,364,343 A
• Filed: 04/30/1959
• Issued: 01/16/1968
• Est. Priority Date: 04/30/1959
• Status: Expired due to Term

• Current Assignee: John M. Hunt
• Original Assignee: John M. Hunt
• Inventors: Hunt, John M.
• Application Number:
  US03/810,173
• Time in Patent Office: 3,183 Days
• US Class Current: 701/300
• CPC Class Codes: G06F 7/548 Trigonometric functions; Co-ordinate transformations
• CPC Class Codes: G06G 7/78 for direction-finding, locating, distance or velocity measuring, or navigation systems
• CPC Class Codes: G06J 1/00 Hybrid computing arrangements digitally-programmed analogue computers G06G7/06

Claims

1. A COMPUTER DEVICE COMPRISING:

INTEGRATING MEANS RESPONSIVE TO ANALOG COMPUTER INPUT QUANTITIES AND OPERATIVE TO INTEGRATE SAID COMPUTER INPUT QUANTITIES WITH RESPECT TO TIME TO PROVIDE ANALOG COMPUTER OUTPUT QUANTITIES;

CONVERTING MEANS RESPONSIVE TO SAID COMPUTER OUTPUT QUANTITIES AND OPERATIVE TO DERIVE PAIRS OF OUTPUT QUANTITIES, EACH PAIR BEING COMMENSURATE WITH A DIFFERENT COMPUTER OUTPUT QUANTITY AND INCLUDING A DIGITAL SIGNAL COMMENSURATE WITH THE QANTIZED MAGNITUDE OF THE COMPUTER OUTPUT QUANTITY AND AN ANALOG INTERPOLATION SIGNAL COMMENSURATE WITH THE DIFFERENCE BETWEEN THE QUANTIZED MAGNITUDE AND THE ACTUAL MAGNITUDE OF THE COMPUTER OUTPUT QUANTITY;

SIMULATING MEANS FOR PROVIDING FURTHER PAIRS OF OUTPUT QUANTITIES, EACH OF SAID FURTHER PAIRS OF OUTPUT QUANTITIES BEING COMMENSURATE WITH A SIMULATED COMPUTER OUTPUT QUANTITY AND AT LEAST ONE SIMULATED COMPUTER OUTPUT QANTITY BEING ASSOCIATED WITH EACH OF SAID COMPUTER OUTPUT QUANTITIES, EACH OF SAID FURTHER PAIRS OF OUTPUT QUANTITIES INCLUDING A SIMULATED DIGITAL SIGNAL COMMENSURATE WITH THE QUANTIZED MAGNITUDE OF THE SIMULATED COMPUTER QUANTITY AND A SIMULATED INTERPOLATION SIGNAL COMMENSURATE WITH THE DIFFERENCE BETWEEN THE QUANTIZED MAGNITUDE AND THE ACTUAL MAGNITUDE OF THE SIMULATED COMPUTER QUANTITY;

ARITHMETIC COMPUTING MEANS RESPONSIVE TO SAID PAIRS AND SAID FURTHER PAIRS OF OUTPUT QUANTITIES AND OPERATIVE TO DERIVE DIGITAL OUTPUT QUANTITIES AND INTERPOLATION OUTPUT QUANTITIES, EACH OF SAID DIGITAL OUTPUT QUANTITIES BEING COMMENSURATE WITH THE DIFFERENCE OF THE DIGITAL SIGNAL AND ITS ASSOCIATED SIMULATED DIGITAL SIGNAL AND EACH OF SAID INTERPOLATION OUTPUT QUANTITIES BEING COMMENSURATE WITH THE DIFFERENCE OF THE