Patents by Inventor Ludwig Ceshkovsky
Ludwig Ceshkovsky 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).
-
Patent number: 4506355Abstract: A method and apparatus for selectably retrieving information from any of a plurality of spirally-formed information tracks formed in a video disc by means of controlling a carriage for translating the video disc in a forward or a reverse direction relative to radiant beam information recovery means in a video disc player. Each information track is identified by a unique address and means are provided for selecting the address of a particular track to be retrieved. A prescribed sequence of drive signals is applied to a carriage motor dependent on the distance to be traveled by the carriage to retrieve the selected information, the drive signals being successively stepped downward to intermittently redetermine carriage motor speed as predetermined location thresholds are reached during carriage translation.Type: GrantFiled: December 13, 1982Date of Patent: March 19, 1985Assignee: Discovision AssociatesInventors: Wayne R. Dakin, Ludwig Ceshkovsky
-
Patent number: 4488275Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: December 30, 1982Date of Patent: December 11, 1984Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4477890Abstract: Apparatus for generating a map of detectable characteristics of a disc. A scanning signal display device has a detector coupled to the intensity input thereof. The detector detects the characteristics at a location on the disc which is scanned in a spiral pattern and provides a signal representative of the detected characteristics to the display device. A signal is generated and provided to the drive inputs of the display device to cause the trace of the device to follow a spiral pattern corresponding to the scan pattern of the predetermined location.Type: GrantFiled: March 1, 1982Date of Patent: October 16, 1984Assignee: Discovision AssociatesInventors: Donald G. Mooney, Ludwig Ceshkovsky
-
Patent number: 4439848Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: September 1, 1981Date of Patent: March 27, 1984Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4375091Abstract: A method and apparatus for selectably retrieving information from any of a plurality of spirally-formed information tracks formed in a video disc by means of controlling a carriage for translating the video disc in a forward or a reverse direction relative to radiant beam information recovery means in a video disc player. Each information track is identified by a unique address and means are provided for selecting the address of a particular track to be retrieved. A prescribed sequence of drive signals is applied to a carriage motor dependent on the distance to be traveled by the carriage to retrieve the selected information, the drive signals being successively stepped downward to intermittently redetermine carriage motor speed as predetermined location thresholds are reached during carriage translation.Type: GrantFiled: August 24, 1981Date of Patent: February 22, 1983Assignee: Discovision AssociatesInventors: Wayne R. Dakin, Ludwig Ceshkovsky
-
Patent number: 4371899Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: March 17, 1980Date of Patent: February 1, 1983Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4370679Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: March 17, 1980Date of Patent: January 25, 1983Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4358796Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: March 17, 1980Date of Patent: November 9, 1982Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4332022Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: March 17, 1980Date of Patent: May 25, 1982Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: 4228326Abstract: Method and apparatus for controllably rotating an information storage disc relative to a radially movable optical transducer, whereby information is recorded on the disc in a series of substantially circular and concentrically arranged information tracks. The angular velocity of the disc and the radial velocity of the transducer are controllably adjusted to be inversely proportional to the radius of the particular information track being recorded, whereby the track is moved at a constant linear velocity relative to the transducer and the successive tracks are equally spaced with respect to each other, and whereby a uniform information recording density over the surface of the disc is achieved.Type: GrantFiled: November 16, 1978Date of Patent: October 14, 1980Assignee: MCA Discovision Inc.Inventors: Wayne R. Dakin, Ludwig Ceshkovsky
-
Patent number: 4223349Abstract: Method and apparatus for recovering information at a substantially constant rate from a rotatable information storage disc. The information is stored on the disc in a plurality of substantially circular and concentrically arranged information tracks, with a substantially uniform recording density, and it is recovered by controllably rotating the disc, relative to a transducer, at an angular velocity substantially inversely proportional to the radius of the corresponding track. The apparatus includes a coarse speed control potentiometer for producing a measure of the radius of the particular information track from which information is being recovered, and fine speed control means for comparing the relative phase angles of a periodic signal in the recovered information and a periodic reference signal and for producing a fine speed control signal proportional to the phase difference.Type: GrantFiled: November 16, 1978Date of Patent: September 16, 1980Assignee: MCA Discovision, Inc.Inventors: Wayne R. Dakin, Ludwig Ceshkovsky
-
Patent number: RE32051Abstract: A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track.Type: GrantFiled: June 11, 1984Date of Patent: December 17, 1985Assignee: Discovision AssociatesInventors: Ludwig Ceshkovsky, Wayne R. Dakin
-
Patent number: RE32431Abstract: Method and apparatus for recovering information at a substantially constant rate from a rotatable information storage disc. The information is stored on the disc in a plurality of substantially circular and concentrically arranged information tracks, with a substantially uniform recording density, and it is recovered by controllably rotating the disc, relative to a transducer, at an angular velocity substantially inversely proportional to the radius of the corresponding track. The apparatus includes a coarse speed control potentiometer for producing a measure of the radius of the particular information track from which information is being recovered, and fine speed control means for comparing the relative phase angles of a periodic signal in the recovered information and a periodic reference signal and for producing a fine speed control signal proportional to the phase difference.Type: GrantFiled: May 8, 1985Date of Patent: June 2, 1987Assignee: Discovision AssociatesInventors: Wayne R. Dakin, Ludwig Ceshkovsky