IT1218236B - Foamed plastic cell size determn. appts. - Google Patents
Foamed plastic cell size determn. appts.Info
- Publication number
- IT1218236B IT1218236B IT20485/88A IT2048588A IT1218236B IT 1218236 B IT1218236 B IT 1218236B IT 20485/88 A IT20485/88 A IT 20485/88A IT 2048588 A IT2048588 A IT 2048588A IT 1218236 B IT1218236 B IT 1218236B
- Authority
- IT
- Italy
- Prior art keywords
- rotation
- current
- determn
- appts
- cell size
- Prior art date
Links
- 230000001419 dependent effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
Landscapes
- Details Of Television Scanning (AREA)
Abstract
In a telecine chain, the scanning raster is rotated by applying a magnetic field perpendicular to the axis of the electron beam, and the distortion introduced by such rotation is compensated for. A rotate coil is located about the scanning tube the coil formed so that current passing through it induces the magnetic field and thus effects the rotation of the raster. The degree of rotation is within limits dependent on the current, and the direction of rotation is dependent on the direction of current flow. There is pref. an Absolute Angle Generator which has an input common with the input which controls the current through the Rotate Coil and which provides outputs for the compensation functions. Focus compensation is effected by applying a stimulus to the focus system which is based on the degree of rotation being effected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20485/88A IT1218236B (en) | 1988-05-06 | 1988-05-06 | Foamed plastic cell size determn. appts. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20485/88A IT1218236B (en) | 1988-05-06 | 1988-05-06 | Foamed plastic cell size determn. appts. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8820485A0 IT8820485A0 (en) | 1988-05-06 |
IT1218236B true IT1218236B (en) | 1990-04-12 |
Family
ID=11167660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20485/88A IT1218236B (en) | 1988-05-06 | 1988-05-06 | Foamed plastic cell size determn. appts. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1218236B (en) |
-
1988
- 1988-05-06 IT IT20485/88A patent/IT1218236B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8820485A0 (en) | 1988-05-06 |
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