Patents by Inventor Henry R. Warren

Henry R. Warren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Recording bias method and circuit
    Patent number: 4635135
    Abstract: A recording system has one signal FM recorded and another signal baseband recorded. The multiple of the FM carrier is used as bias for the baseband recording to eliminate beats.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: January 6, 1987
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Tape threading arrangement for 360 degree wrap tape recorder
    Patent number: 4593330
    Abstract: A tape threading arrangement for a helical scan VTR with a 360 degree wrap angle has two pairs of guides. The first pair wraps the tape around a drum for 360 degrees. The second pair keeps the tape from contacting the tape on the drum and is actuated by a pair of variable length springs coupled between said guide pairs. This allows a compact structure.
    Type: Grant
    Filed: April 26, 1983
    Date of Patent: June 3, 1986
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • AST for a two track VTR
    Patent number: 4583130
    Abstract: A magnetic tape has luminance and chroma components recorded in different tracks with the horizontal sync signal recorded between them. On playback, if there is mistracking, the sync signal will be present in either the luminance or the chroma signal. This is detected and used to control the deflection of a bimorph to correct the mistracking.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: April 15, 1986
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Color moviola for two-track VTR
    Patent number: 4504869
    Abstract: When in the high or low speed editing or "moviola" mode, a VTR switches the inputs of Y and C demodulators between the Y and C heads or switches the demodulator outputs as the heads cross tracks. Thus, the Y and C demodulators always receive or provide at least some Y and C signals respectively, thereby making color display during the moviola mode possible.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: March 12, 1985
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Misregistration prevention in two channel VTRS
    Patent number: 4485395
    Abstract: A tape has Y and C components of a television signal recorded in different tracks. This can lead to mistiming and hence misregistration errors. To correct this a phase error signal is generated from the horizontal sync signals in each track and used to control variable delay lines for the Y and C to correct the misregistration. Separate delay lines for the I and Q components can also be used.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: November 27, 1984
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Crosstalk filtering arrangement with variable frequency filtering to remove effects of FM carrier
    Patent number: 4441090
    Abstract: The effects of crosstalk of an FM carrier from a first signal channel into a second signal channel are reduced by a variable-frequency notch filter coupled in the second channel. The frequency of the notch in the transmission characteristic of the filter is controlled to track the frequency of the FM carrier. Signals in the second channel at the frequency of the FM carrier are attenuated, and therefore the crosstalk signal is attenuated and its effects reduced.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: April 3, 1984
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Crosstalk filtering arrangement with variable frequency filtering to remove effects of FM carrier
    Patent number: 4335394
    Abstract: The effects of crosstalk of an FM carrier from a first signal channel into a second signal channel are reduced by a variable-frequency notch filter coupled in the second channel. The frequency of the notch in the transmission characteristic of the filter is controlled to track the frequency of the FM carrier. Signals in the second channel at the frequency of the FM carrier are attenuated, and therefore the crosstalk signal is attenuated and its effects reduced.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: June 15, 1982
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Stop and variable-speed motion on segmented-scan tape recording
    Patent number: 4317140
    Abstract: In a segmented helical-scan recorder-playback arrangement, alternate scans of the heads across the tape transduce information relating to the top and bottom of the raster. Noise bands and raster distortion occurring during the crossover of a scanning head from track to track during playback in a stop or variable-speed mode is prevented by playback heads having gaps wider than the width of the recorded track and by azimuth separation between adjacent tracks.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: February 23, 1982
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Magnetic recording with reduced cross-talk and interchannel time displacement
    Patent number: 4296430
    Abstract: A multichannel recorder, such as for color video, reduces the width of recording heads that record low frequencies, and interchanges the order of one such head with a high frequency head. This both reduces crosstalk and keeps interchannel time displacement low.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: October 20, 1981
    Assignee: RCA Corporation
    Inventor: Henry R. Warren
  • Headwheel servo lock verification with stationary head
    Patent number: 4263625
    Abstract: In a helical-scan tape recorder, headwheel servo loop locking is verified by a stationary head located downstream from the headwheel at a transverse position relative to the tape path at which the vertical synchronizing or blanking signals occur in normal operation.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: April 21, 1981
    Assignee: RCA Corporation
    Inventor: Henry R. Warren