公开(公告)号：DE3048900A1

公开(公告)日：1981-09-17

申请号：DE3048900

申请日：1980-12-23

Applicant: RCA CORP

Inventor： JOHN GUNTER

IPC: H04N5/903 ,  G11B3/00 ,  G11B3/085 ,  G11B3/10 ,  G11B3/36 ,  G11B11/16 ,  G11B21/10 ,  H04N5/76

Abstract: A cutting stylus assembly for electromechanically recording short wavelength video signal information in a metal master is supported in a cutterhead suspension apparatus. In the suspension head apparatus the cutting stylus assembly is supported by an air puck device so that the stylus cuts an information track having a given quiescent depth. Two sets of parallel spring steel suspension members are used to mount the cutting stylus assembly and air puck to an electromechanical recording lathe. These suspension members are used to control the cutting stylus assembly and air puck motion, to maintain a fixed stylus assembly to air puck plane relationship and to effect a variable preload for the cutting stylus system.

公开(公告)号：IT8120926D0

公开(公告)日：1981-04-03

申请号：IT2092681

申请日：1981-04-03

Applicant: RCA CORP

Inventor： ROACH WILLIAM RONALD ,  JOHN GUNTER ,  HEYMAN PHILIP MICHAEL ,  BORTFELD DAVID PAUL

IPC: G06K19/06 ,  G11B19/12 ,  G11B23/36 ,  G11B23/40 ,  G11B

公开(公告)号：DE3206978A1

公开(公告)日：1982-09-16

申请号：DE3206978

申请日：1982-02-26

Applicant: RCA CORP

Inventor： KAGANOWICZ GRZEGORZ ,  JOHN GUNTER ,  RAINEY JAMES HARRISON ,  VALEMBOIS PIERRE VICTOR

IPC: B24B19/16 ,  G11B3/56 ,  B23P13/00 ,  B24B9/16 ,  G11B3/48 ,  G11B9/06

公开(公告)号：FR2480980A1

公开(公告)日：1981-10-23

申请号：FR8107822

申请日：1981-04-17

Applicant: RCA CORP

Inventor： ROACH WILLIAM RONALD ,  JOHN GUNTER ,  HEYMAN PHILIP MICHAEL ,  BORTFELD DAVID PAUL

IPC: G06K19/06 ,  G11B19/12 ,  G11B23/36 ,  G11B23/40 ,  G11B3/68 ,  G11B11/00

公开(公告)号：DE3115554A1

公开(公告)日：1982-06-03

申请号：DE3115554

申请日：1981-04-16

Applicant: RCA CORP

Inventor： ROACH WILLIAM RONALD ,  JOHN GUNTER ,  HEYMAN PHILIP MICHAEL ,  BORTFELD DAVID PAUL

IPC: G06K19/06 ,  G11B19/12 ,  G11B23/36 ,  G11B23/40 ,  G11B3/86 ,  G06K7/14 ,  G11B17/04

公开(公告)号：CA1161954A

公开(公告)日：1984-02-07

申请号：CA374768

申请日：1981-04-06

Applicant: RCA CORP

Inventor： JOHN GUNTER ,  HEYMAN PHILIP M ,  BORTFELD DAVID P

IPC: G06K19/06 ,  G11B19/12 ,  G11B7/00 ,  G11B5/82

Abstract: RCA 75,269 A video disc record suitable for use with a video disc player apparatus is provided with a label for identifying the program material stored on the surface of the record. The label is formed in a machine readable format which comprises grooves in the surface of the record. In one format whorls of a spiral groove of a first pitch are spaced alternately with whorls of a spiral groove of a second pitch. A readout apparatus comprises a light beam which is arranged to scan the grooved label and a detector which is arranged to sense the light beam reflected from the disc record surface. Light striking a grooved section of first pitch is reflected in a substantially specular direction while light striking a grooved section of second pitch is substantially scattered out of the specular direction. The detector is arranged to collect the light reflected into the specular direction.