Title:
【発明の名称】テレテキスト頁を伝送する方法
Document Type and Number:
Japanese Patent JP2001520811
Kind Code:
A
Abstract:
Teletext page signals are transmitted in a format providing only basic characters and colors, along with extension signals enlarging the character set, colors, and other presentation information which is used by decoders and display systems having more extensive capabilities. Decoders ignore extension signals intended for a higher level display than the associated apparatus. A code is added identifying the level of display for which extension signals are intended, so that extension signals can be transmitted for use only by a display of a given capability, without undesired use by a higher level display.
Inventors:
Van Gestel Henrikus Antonius
Application Number:
JP50635096A
Publication Date:
October 30, 2001
Filing Date:
December 05, 1994
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H04N7/025; H04N7/03; H04N7/035; H04N7/087; H04N7/088; (IPC1-7): H04N7/025; H04N7/03; H04N7/035
Attorney, Agent or Firm:
Susumu Tsugaru (1 person outside)