-
公开(公告)号：DE69015438T2
公开(公告)日：1995-07-13
申请号：DE69015438
申请日：1990-05-14
Applicant: IBM
Abstract: A CRT heater circuit for a CRT display is described, the circuit comprising control means (4) for dynamically varying a voltage (Vh) across the cathode heater in response to variations in the beam current density (I) within the CRT. In this way the optimum voltage across the heater coils is maintained, thus preventing "cathode stripping" at times of peak beam currents, and optimising the CRT's working lifetime.
-
公开(公告)号：GB2232044A
公开(公告)日：1990-11-28
申请号：GB8911656
申请日：1989-05-20
Applicant: IBM
Abstract: A CRT heater circuit for a CRT display is described, the circuit comprising control means (4) for dynamically varying a voltage (Vh) across the cathode heater in response to variations in the beam current density (I) within the CRT. In this way the optimum voltage across the heater coils is maintained, thus preventing "cathode stripping" at times of peak beam currents, and optimising the CRT's working lifetime.
-
公开(公告)号：DE69015438D1
公开(公告)日：1995-02-09
申请号：DE69015438
申请日：1990-05-14
Applicant: IBM
Abstract: A CRT heater circuit for a CRT display is described, the circuit comprising control means (4) for dynamically varying a voltage (Vh) across the cathode heater in response to variations in the beam current density (I) within the CRT. In this way the optimum voltage across the heater coils is maintained, thus preventing "cathode stripping" at times of peak beam currents, and optimising the CRT's working lifetime.
-
公开(公告)号：GB2196817A
公开(公告)日：1988-05-05
申请号：GB8626018
申请日：1986-10-30
Applicant: IBM
Inventor： CHASE BRIAN DAVID , CLITHEROE ADRIAN MARK , SHEPHERD EDWARD TREVOR , BEANLANDS PETER
-
Patent Agency Ranking
公开(公告)号：DE69025575T2
公开(公告)日：1996-09-12
申请号：DE69025575
申请日：1990-12-14
Applicant: IBM
Inventor： LEWIS GRIFFITH JOHN , SHEPHERD EDWARD TREVOR , BEETESON JOHN STUART , CLITHEROE ADRIAN MARK
Abstract: A touch sensitive display comprises a display screen (40). Mounting means (41) mounts a plate (20) of a rigid transparent material, on the display screen (40). Touch sensing means (21,22,23,24) cooperates with the mounting means to producing a plurality of electrical signals (25,26,27,28) in response to and indicative of a force corresponding to tactile stimulus applied to the plate (20). The mounting means (41) comprises a film (41) composed of a transparent, elastic, adhesive compound, having a similar refractive index to that of the display screen (40). The compound is applied to one surface of the plate (20) for bonding that surface to the display screen (40).
-
公开(公告)号：DE3786516D1
公开(公告)日：1993-08-19
申请号：DE3786516
申请日：1987-08-18
Applicant: IBM
Inventor： CHASE BRIAN DAVID , CLITHEROE ADRIAN MARK , SHEPHERD EDWARD TREVOR , BEANLANDS PETER
-
公开(公告)号：DE69025575D1
公开(公告)日：1996-04-04
申请号：DE69025575
申请日：1990-12-14
Applicant: IBM
Inventor： LEWIS GRIFFITH JOHN , SHEPHERD EDWARD TREVOR , BEETESON JOHN STUART , CLITHEROE ADRIAN MARK
Abstract: A touch sensitive display comprises a display screen (40). Mounting means (41) mounts a plate (20) of a rigid transparent material, on the display screen (40). Touch sensing means (21,22,23,24) cooperates with the mounting means to producing a plurality of electrical signals (25,26,27,28) in response to and indicative of a force corresponding to tactile stimulus applied to the plate (20). The mounting means (41) comprises a film (41) composed of a transparent, elastic, adhesive compound, having a similar refractive index to that of the display screen (40). The compound is applied to one surface of the plate (20) for bonding that surface to the display screen (40).
-
公开(公告)号：DE3786516T2
公开(公告)日：1994-02-17
申请号：DE3786516
申请日：1987-08-18
Applicant: IBM
Inventor： CHASE BRIAN DAVID , CLITHEROE ADRIAN MARK , SHEPHERD EDWARD TREVOR , BEANLANDS PETER
-
公开(公告)号：GB2239376A
公开(公告)日：1991-06-26
申请号：GB8928557
申请日：1989-12-18
Applicant: IBM
Inventor： CLITHEROE ADRIAN MARK , BEETESON JOHN STUART , SHEPHERD EDWARD TREVOR , LEWIS GRIFFITH JOHN STEADMAN
Abstract: A touch sensitive display comprises a display screen (40). Mounting means (41) mounts a plate (20) of a rigid transparent material, on the display screen (40). Touch sensing means (21,22,23,24) cooperates with the mounting means to producing a plurality of electrical signals (25,26,27,28) in response to and indicative of a force corresponding to tactile stimulus applied to the plate (20). The mounting means (41) comprises a film (41) composed of a transparent, elastic, adhesive compound, having a similar refractive index to that of the display screen (40). The compound is applied to one surface of the plate (20) for bonding that surface to the display screen (40).
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.03 seconds)
