INFORMATION SELECTING AND DISPLAYING APPARATUS

• US 3,860,745 A
• Filed: 03/12/1971
• Issued: 01/14/1975
• Est. Priority Date: 03/24/1970
• Status: Expired due to Term

• Current Assignee: Shohei Takada
• Original Assignee: Shohei Takada
• Inventors: Takada, Shohei
• Primary Examiner(s): Richardson, Robert L.
• Assistant Examiner(s): Saffian, Mitchell
• Application Number:
  US05/123,746
• Time in Patent Office: 1,404 Days
• Field of Search: 178/5.6,5.8R,DIG.22,DIG.35,6 35/9,8R
• US Class Current: 348/24
• CPC Class Codes: G09B 7/08 characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question, supplying further information
• CPC Class Codes: H04N 7/002 Special television systems not provided for by H04N7/007 - H04N7/18 still pictures via a television channel H04N1/00098

Abstract

In television broadcasting, a series of special signals carrying different motionless images for different frames are repeatedly sent out, and after being converted into video signals by a receiving section of a television receiver, are applied to a selector means. The selector means picks up a video signal carrying a desired motionless image in accordance with the indication of an indicator means and sends said video signal to a displaying section, where the selected signal is converted into an image and displayed.

Claims

1. An information selecting and displaying apparatus comprising:

transmitter means for repeatedly sending out a series of signals carrying a multiplicity of different pieces of display information, said series of signals including a start signal inserted at the start thereof, each of said signals carrying a piece of display information including a display information signal part and a plurality of number signal parts representing the numbers of predetermined ones of said series of signals carrying predetermined ones of said multiplicity of pieces of display information and including a synchronizing signal;

receiver means for receiving said series of signals and separating said start signal and said synchronizing signals from said series of signals;

counter means, connected to said receiver means, for counting the number of said synchronizing signals appearing after said start signal;

first gate means, connected to said receiver means, for selecting a signal carrying a desired piece of display information from among said series of signals;

separator means, connected to said first gate means, for separating said number signal parts from said signal selected by said first gate means;

first register means, connected to said separator means, for storing said numbers represented by said number signal parts;

displaying means, connected to said separator means, for displaying the display information signal part contained in said selected signal;

answering means for allowing alternative answers to be given to said displayed information on said displaying means;

second gate means, connected to said first register means and said answering means, for selecting one of said numbers in said first register means in accordance with an answer by said answering means;

second register means, connected to said second gate means, for storing said number selected by said second gate means; and

comparator means, connected to said counter means and said second register means, for comparing the number in said counter means with the number in said second register means to produce a coincident signal to be applied to said first gate means for operating said first gate means.

2. An information selecting and displaying apparatus according to claim 1, further comprising memory means connected between said separator means and said displaying means fOr storing the signal carrying said desired piece of display information selected by said first gate means and repeatedly sending said signal to said displaying means.

3. An information selecting and displaying apparatus according to claim 1, in which said transmitter means comprises means for transmitting a broadcast wave corresponding to said series of signals to said receiver means.