Title:
【発明の名称】RGB信号を多重ビットコンポーネント信号に変換するための回路
Document Type and Number:
Japanese Patent JP3363920
Kind Code:
B2
Abstract:
Circuits for converting analogue RGB signals to analogue component signals are well known. Normally text signals are added to component signals in an analogue manner. Special problems may arise in case of upconverting such interlace video signals to a higher field frequency. Vertical jitter or unsharpness of the text can be introduced. In the RGB domain text signals can be represented by binarylike amplitude values (R, G, B). Therefore such text signals are generated digitally in the RGB domain and converted digitally to the component domain (Y, U, V). A simple circuitry, including three inverters (11, 12, 13), a latch (14) and two adders (15, 16), is required only.
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Inventors:
David Gillies
Application Number:
JP17793492A
Publication Date:
January 08, 2003
Filing Date:
July 06, 1992
Export Citation:
Assignee:
Thomson Multimedia Society Anonym
International Classes:
H04N9/67; H04N11/24; H04N11/06; (IPC1-7): H04N11/06; H04N11/24
Domestic Patent References:
| JP59108146A |
Attorney, Agent or Firm:
Toshio Yano (2 outside)