Radar recording and reproducing system with pulse modulation and time division multiplexing

Claim 2

In a single track magnetic tape recording/reproducing system, a signal processor for combining and separating CRT information including video, horizontal and vertical deflection signals, and blanking pulse, comprising: combining means for receiving the CRT information wherein the horizontal and vertical deflection signals are encoded in pulse width modulation form during the blanking period and timemultiplexed with the video during the nonblanking period to form a composite output signal for recording on the single track tape; and separating means connected to receive the composite output signal on the tape for recovering the blanking pulse, deflection and video signals.

Claim 3

A signal processor according to claim 1 wherein said combining means further comprises: timing means formed to receive the blanking pulse for providing a sampling pulse, horizontal and vertical record pulses, and sync pulses; encoding means formed to receive the horizontal and vertical deflection signals and connected to receive the sampling pulse and the record pulses for encoding the deflection signals into pulse width modulation form and for providing horizontal and vertical pulse width signals proportional to the amplitude of the horizontal and vertical deflection signals; buffer means connected to receive the sync pulses and the horizontal and vertical pulse width signals and for providing a serial output signal; and multiplexing means formed to receive the video and blanking pulse and connected to receive the serial output signal for providing the composite signal.

Claim 4

A signal processor according to claim 2 wherein said separating means further comprises: timing means formed to receive the composite signal for regenerating the blanking pulse and the record pulses; demultiplexing means formed to receive the composite signal, and connected to receive the regenerated blanking pulse and the record pulses for separating the horizonal and vertical pulse width signals from the composiTe signal; decoding means connected to receive the separated horizontal and vertical pulse width signals for providing decoded analog signals thereof; deflection signal generating means connected to receive the regenerated blanking pulse and decoded analog signals for regenerating the horizontal and vertical deflection signals; and switching means formed to receive the composite signal and connected to receive the regenerated blanking pulse for passing the video.

Claim 5

In a single track magnetic tape recording system, a signal processor for combining CRT information including video, horizontal and vertical deflection signals, and blanking pulse, comprising: timing means formed to receive the blanking pulse and for providing a sampling pulse, horizontal and vertical record pulses, and sync pulses; encoding means formed to receive the horizontal and vertical deflection signals and connected to receive the sampling pulse and the record pulses for encoding the deflection signals into pulse width modulation form and for providing horizontal and vertical pulse width signals proportional to the amplitude of the horizontal and vertical deflection signals; buffer means connected to receive the sync pulses and the horizontal and vertical pulse width signals and for providing a serial output signal; and time multiplexing means formed to receive the video and blanking pulse and connected to receive the serial output signal for providing a composite signal having the serial output signal for recording during blanking time and the video for recording during nonblanking time.

Claim 6

In a single track magnetic tape recording system, a signal processor for combining CRT information including video, horizontal and vertical deflection signals, and blanking pulse, comprising: timing means formed to receive the blanking pulse and for providing a sampling pulse, horizontal and vertical record pulses, and sync pulses; encoding means formed to receive the horizontal and vertical deflection signals and connected to receive the sampling pulse and the record pulses for encoding the deflection signals into pulse width modulation form and for providing horizontal and vertical pulse width signals proportional to the amplitude of the horizontal and vertical deflection signals; buffer means connected to receive the sync pulses and the horizontal and vertical pulse width signals and for providing a serial output signal; and time multiplexing means formed to receive the video and blanking pulse and connected to receive the serial output signal for providing a composite signal having the serial output signal for recording during blanking time and the video for recording during nonblanking time.

Claim 7

A signal processor according to claim 4 wherein the sampling pulse, horizontal and vertical record pulses, and the sync pulses provided by said timing means are produced during the blanking time.

Claim 8

A signal processor according to claim 5 wherein the encoding means further comprises: a horizontal sample and hold circuit formed to receive the horizontal deflection signal and connected to receive the sampling pulse for providing a horizontal sample pulse which amplitude is representative of the sampled level of the horizontal deflection signal; a vertical sample and hold circuit formed to receive the vertical deflection signal and connected to receive the sampling pulse for providing a vertical sample pulse which amplitude is representative of the sampled level of the vertical deflection signal; a first ramp generator connected to receive the horizontal record pulse for generating a horizontal ramp signal; a second ramp generator connected to receive the vertical record pulse for generating a vertical ramp signal; a first comparator amplifier connected to receive the horizontal sample pulse and the horizontal ramp signal for providing the horizontal pulse width signal; and a second comparator amplifier connected to receive the vertical sample pulse and the vertical ramp signal for providing the vertical pulse width signal.

Claim 9

A signal processor according to claim 6 wherein said recording is accomplished utilizing frequency modulation with transverse scan of said magnetic tape.

Claim 10

In a single track magnetic tape playback system, a signal processor for separating a composite signal of CRT information including video, horizontal and vertical pulse width signals, and sync pulses, comprising: timing means formed to receive the composite signal of the CRT information for regenerating a first output representative of a blanking pulse and a second output representative of horizontal and vertical record pulses; time demultiplexing means formed to receive the composite signal, and connected to receive the regenerated blanking pulse and the record pulses for separating the horizontal and vertical pulse width signals from the composite signal during the CRT blanking time; decoding means connected to receive the separated horizontal and vertical pulse width signals for providing decoded analog signals thereof; deflection signaL generating means connected to receive the regenerated blanking pulse and decoded analog signals for regenerating horizontal and vertical deflection signals; and switching means formed to receive the composite signal and connected to receive the regenerated blanking pulse for passing the video during the CRT nonblanking time.

Claim 11

In a single track magnetic tape playback system, a signal processor for separating a composite signal of CRT information including video, horizontal and vertical pulse width signals, and sync pulses, comprising: timing means formed to receive the composite signal of the CRT information for regenerating a first output representative of a blanking pulse and a second output representative of horizontal and vertical record pulses; time demultiplexing means formed to receive the composite signal, and connected to receive the regenerated blanking pulse and the record pulses for separating the horizontal and vertical pulse width signals from the composite signal during the CRT blanking time; decoding means connected to receive the separated horizontal and vertical pulse width signals for providing decoded analog signals thereof; deflection signaL generating means connected to receive the regenerated blanking pulse and decoded analog signals for regenerating horizontal and vertical deflection signals; and switching means formed to receive the composite signal and connected to receive the regenerated blanking pulse for passing the video during the CRT nonblanking time.

Claim 12

A signal processor according to claim 8 wherein said timing means further comprises: a sync separator formed to receive the composite signal and responsive to the reception of the sync pulses for providing the regenerated blanking pulse; and a playback timing circuit connected to receive the output of said sync separator for providing the record pulses.

Claim 13

A signal processor according to claim 9 wherein said deflection signal generating means further comprises: a first bipolar ramp generator connected to receive the regenerated blanking pulse and the decoded analog horizontal signal for generating a horizontal ramp signal proportional to the level of the decoded analog horizontal signal; a second bipolar ramp generator connected to receive the regenerated blanking pulse and the decoded analog vertical signal for generating a vertical ramp signal proportional to the level of the decoded analog vertical signal; a horizontal deflection driver connected to receive the horizontal ramp signal for providing an amplified horizontal output signal; and a vertical deflection driver connected to receive the vertical ramp signal for providing an amplified vertical output signal.

Claim 14

A signal processor as described in claim 10 wherein said playback is accomplished utilizing frequency modulation detection with transverse scan of said magnetic tape.