 Color gain control circuit |
| I claim: 1. A color gain control circuit characterized in that a manual gain control, the bias of ... |
|
| System for processing audio PCM digital signals |
| Accordingly, a object of the present invention is to provide a reproduced signal processing system ... |
|
| Tape recorder with cue processor |
| The present invention is developed from the abovementioned idea. The object of the present ... |
|
| Television circuit arrangement for field and line frequency doubling and picture part magnification |
| What is claimed is: 1. A television circuit arrangement for field and line frequency doubling and ... |
|
| Attachment of lines to objects in interactive draw graphics |
| It is therefore an object of this invention to provide a technique for an interactive computer ... |
|
| Stacking of materials |
| Turning to the drawings, a stacking assemblage 10 in accordance with the invention is positioned ... |
|
| Measurement and dispensing unit |
| In accordance with the invention, an improved and economically disposable dispensing unit is ... |
|
| Automatic frequency change device |
| What is claimed is: 1. An automatic frequency change device comprising: an analog-to-digital ... |
|
| Buffer occupancy control method for use in video buffering verifier |
| To solve the above problem, it is an object of the present invention to provide a buffer occupancy ... |
|
|
Receiver for television and teletext signals, including a teletext decoder and an adaptive waiting time reduction circuit
| Details |
Inventors: Raaijmakers, Thomas A. M.;
Assignee: U.S. Philips Corporation (New York, NY)
Primary Examiner: Kostak; Victor R.
Assistant Examiner:
Attorney, Agent or Firm: Squire; William
A television receiver or video recorder includes a multipage teletext, a programmed control and a non-volatile page number memory with which their teletext pages with their corresponding page numbers are stored in a page number memory. The numbers of frequently consulted pages are automatically stored in the page number memory with reference to the pattern of use, i.e., frequency of use. The number of each requested page is stored in the page number memory. The oldest page number or, if the entered number is already stored, the duplicate identical page number is removed from the memory. The page number memory then always comprises the most recently requested page numbers. |
|
DETAILED DESCRIPTION What is claimed is: 1.
A receiver for television and teletext signals, comprising: an operating system for generating a page number of a teletext page desired by a user; a teletext decoder having a first input for receiving the teletext signals, a second input for receiving page numbers of teletext pages, and a picture signal output, said decoder being adapted to search and store the teletext pages corresponding to the received page numbers; a page number memory for storing at least two page numbers; a control circuit coupled to the page number memory, the operating system and the teletext decoder and being adapted to apply the page numbers stored in the page number memory and page numbers generated by the operating system to the teletext decoder, to select for display the teletext page having the page number generated by the operating system, and to store page numbers generated by the operating system in the page number memory; and a display screen, coupled to the picture signal output of the teletext decoder, for displaying the teletext page selected for display; said control circuit including means for assigning an order of precedence to the page numbers in the page number memory, which order of precedence is related to the sequence in which these page numbers are generated by the operating system.
2.
A receiver for television and teletext signals as claimed in claim 1, characterized in that the means for assigning includes means for assigning the most recent order of precedence to a page number generated by the operating system when this page number is stored in the page number memory, and means for reassigning the orders of precedence of the other page numbers in the page number memory.
3.
A receiver for television and teletext signals as claimed in claim 2, characterized in that the means for assigning includes means for removing a page number having an older order of precedence from the page number memory when a page number generated by the operating system is stored in said memory
|
| Related patents |
|
|
Zero crossing detector arrangements
What is claimed is: 1. A zero crossing detector arrangement which is operable on digitized successive samples of an analogue signal, characterised by means for affording ...
|
|
|
Phase comparator using digital and analogue phase detectors
I claim: 1. A phase detector comprising: a digital phase detector circuit responsive to a first signal having opposite edges, said circuit comprising: means for ...
|
|
|
Teletext decoder apparatus including feature of inhibiting generation of an end-of-page signal
What is claimed is: 1. A teletext decoder comprising: means for detecting the page header of a required teletext page, means for detecting the next following page header,...
|
|
|
Ideographic teletext transmissions
It is an object of the present invention to provide an ideographic teletext transmission which enables non-spacing attributes to be used without the need for coding ...
|
|
|
Combination TV receiver and teletext processor with on-screen message capability
It is an object of the invention to enable the insertion and deletion of on-screen display messages over a teletext displayed page without an indeterminate delay in ...
|
|
|
Solid state imaging apparatus and method with expanded dynamic range
What is claimed is: 1. Solid state imaging apparatus comprising: a charge-coupled frame transfer image sensor including: an image-sensitive integration region for ...
|
|
|
Video system with television receiver and teletext processor capable of switching external RGB signals
What is claimed is: 1. In combination in a video system including a television receiver, control microprocessor means, TTX processor means and an external source of RGB ...
|
|
|
Anti-theft device for hoisting or striking a flag or the like
The present invention relates to a device for automatically hoisting or striking a flag, a pennant, colors etc. relative to a support structure, which device eliminates ...
|
|
|
Automatic color level circuit with peak detector
The invention includes the combination of means for amplifying signals subject to substantial amplitude variations and a closed loop sample-and-hold control system ...
|
|
|
Method of and apparatus for deriving a PAL color television signal corresponding to any desired field in an 8-field PAL sequence from one stored field or picture of a PAL signal
We claim: 1. A method of deriving a PAL color television signal corresponding to any field in an 8-field PAL sequence from one stored field or picture of a PAL signal, ...
|
|
|
Image Analysis 
