Digital transponder universal pulse assembly

• US 4,067,011 A
• Filed: 10/22/1976
• Issued: 01/03/1978
• Est. Priority Date: 10/22/1976
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Althaus, Raymond L.
• Primary Examiner(s): Tubbesing, T.H.
• Application Number:
  US05/734,786
• Time in Patent Office: 438 Days
• Field of Search: 343/6.8 R, 343/6.8 LC
• US Class Current: 342/51
• CPC Class Codes: G01S 13/784 Coders or decoders therefor; Degarbling systems; Defruiting systems

Abstract

A combination of large scale integrated digital circuits for providing universally selectable decoding, encoding and over-interrogation control functions in a radar transponder. The circuits are implemented in semiconductor chip and hybrid circuit form and selection of desired functions may be accomplished by external switches, by jumper wiring or by custom designed printed circuit boards.

The use of large scale integrated circuit techniques allows facilitation of multiple control functions without necessity of bulky assemblies or high power consumption.

Claims

1. A universal pulse assembly apparatus for a transponder the transponder having a receiver and a transmitter, the apparatus in combination comprising:

means for decoding a coded video pulse signal from the receiver, said decoding means having first selecting means for determining one of a plurality of predetermined video pulse codes;

means for encoding a modulating pulse signal for the transmitter, said encoding means having second selecting means for determining one of a plurality of predetermined transmitter pulse codes; and

means for controlling the pulse response rate of the transponder;

said controlling means having third selecting means for determining one of a plurality of maximum allowable transponder response rates, said controlling means operable to limit modulation of the transponder when said response rate of the transponder exceeds said selectable maximum response rate.

2. A universal digital pulse assembly apparatus for a transponder the transponder having receiver and a transmitter, the apparatus in combination comprising:

means for digitally decoding a coded video pulse signal from the receiver, said digital decoding means having first selecting means for determining one of a plurality of predetermined video pulse codes;

means for digitally encoding a modulating pulse signal for the transmitter, said digital encoding means having second selecting means for determining one of a plurality of predetermined transmitter pulse codes; and

means for digitally controlling the pulse response rate of the transponder;

said controlling means having third selecting means for determining one of a plurality of maximum allowable transponder response rates, said controlling means operable to limit modulation of the transponder when said response rate of the transponder exceeds said selectable maximum response rate.

3. The apparatus according to claim 2 wherein at least one of said digital decoding means, said digital encoding means and said digital control means is embodied on a large scale CMOS circuit chip.

4. The apparatus according to claim 2 wherein at least one of said first, second and third selecting means comprises switches for determining which of said predetermined functions is selected.

5. The apparatus according to claim 2 wherein at least one of said first, second and third selecting means comprises jumper wires for determining which of said predetermined functions is selected.

6. The apparatus according to claim 2 wherein at least one of said first, second and third selecting means comprises a wiring pattern on a printed circuit board, for determining which of said predetermined functions is selected, said printed circuit board being utilized to mount the combination comprising said digital decoder means, said digital encoder means and said digital controlling means.