Automated language filter

• US 6,166,780 A
• Filed: 10/21/1997
• Issued: 12/26/2000
• Est. Priority Date: 10/21/1997
• Status: Expired due to Term

• Current Assignee: P48, LLC
• Original Assignee: Principle Solutions Incorporated
• Inventors: Bray, James R
• Primary Examiner(s): Lee, Michael
• Application Number:
  US08/954,950
• Time in Patent Office: 1,162 Days
• Field of Search: 348/460, 348/468, 348/5.5, 348/478, 348/482-485, 348/906, 348/632, 348/633, 348/907, 380/20, 704/275, 704/278, 704/251, 704/270
• US Class Current: 348/632
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4396 by muting the audio signal
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 5/60 for the sound signals

Abstract

A method and apparatus for analyzing the closed captioned aspect of a video signal for specific undesirable words or phrases and then muting the audio portion of those words or phrases while not affecting the video portion therein while simultaneously modifying the closed captioned signal in order to display only acceptable words or phrases.

Claims

1. For use in connection with home television video recording, playback, and viewing equipment, apparatus for processing an electronic signal including audio portions and video portions corresponding to audible and visible portions of the electronic signal, with said audio portions containing a spoken component related to the audible portion and with said video portions containing an auxiliary information component providing a visible representation of a respective concurrent spoken component of said electronic signal, said apparatus comprising:

a video input to receive video portion of an electronic signal with said video portion containing a synchronized auxiliary information component corresponding to a visible representation of a concurrent spoken component;

an audio input to receive audio portion of an electronic signal with said audio portion corresponding to said video portion auxiliary information comment;

a video output by which the video portion of an electronic signal is made available to a user of the apparatus;

an audio output by which the audio portion of an electronic signal is made available to a user of the apparatus;

a programmed microcomputer including a data memory for receiving said auxiliary information component from said video portion;

said microcomputer being programmed for analyzing said auxiliary information component in order to determine if said auxiliary information component contains undesirable words or phrases received in said memory;

a switch for muting a corresponding audio portion having a concurrent spoken comment if undesirable words or phrases are detected within an auxiliary information component segment;

said microcomputer being programmed for removing or replacing with another word or phrase any detected undesirable word or phrase found within said auxiliary information segment;

said switch being connected to disable mute at the conclusion of receipt of the modified auxiliary information component segment; and

,

an on-screen display and video combining unit connected to provide a modified auxiliary information component containing signal to said video output.

2. The apparatus of claim 1, wherein said auxiliary information component is a closed caption signal.

3. The apparatus of claim 1, wherein said electronic signal is a television signal.

4. The apparatus of claim 1, wherein said electronic signal is a signal as received from a storage device such as a video cassette recorder.

5. The apparatus of claim 1, further comprising:

means for selecting different levels of operation with respect to the muting of specific words or phrases, with said different levels include;

(1) a very tolerant level in which no word or phrase will be muted,

(2) a medium tolerant level in which a select amount of undesirable words or phrases will be muted,

(3) a strict level in which the list of specific words or phrases in an amount greater than the medium tolerant level will be muted.

6. The apparatus of claim 1 further comprising a computer program subroutine for displaying of said modified and/or unmodified auxiliary information component at the time an undesirable word or phrase is replaced.

7. The apparatus of claim 6 wherein:

said microcomputer is programmed to selectively provide different levels of operation with respect to the displaying of said modified auxiliary information component which include;

(1) a full captioning level in which all modified or unmodified auxiliary information data is displayed;

(2) a normal captioning level in which only modified words or phrases which represent the replacement words or phrases are displayed; and

,

(3) a no captioning level in which no word or phrase is displayed.

8. The apparatus of claim 6, wherein said auxiliary information component is a closed caption signal.

9. The apparatus of claim 7, wherein said auxiliary information component is a closed caption signal.

10. A method of removing undesirable words or phrases from audio and visible television programming having close-captioned text produced by a television set comprising the steps of:

analyzing a synchronized closed-caption component segment of a video signal containing only information corresponding to said audio programming in order to determine if said closed-caption component segment contains undesirable words or phrases;

muting a corresponding concurrent audio segment of an audio signal synchronized with said closed-caption component segment when undesirable words or phrases are detected within said closed-caption component segment of said video signal; and

removing or replacing with another word or phrase any detected undesirable word or phrase found within said closed-caption component segment;

whereby all words or phrases predetermined to be undesirable are prevented from being present in the resulting audio signal or in the closed-caption component of the video signal.

11. The method as recited in claim 10 wherein the closed caption characters are processed through a digital computer with a buffer programmed to replace the characters of each undesirable word or phrase with a different character and to combine such modified closed-caption data in the video signal.

12. The method as recited in claim 10 wherein said undesirable words or phrases are stored in at least one library memory in a microcomputer and characters of closed-caption segments are compared with characters of such undesirable words or phrases for detection thereof.

13. The method as recited in claim 12 wherein there is a second library memory in addition to said at least one library memory, said second library memory having additional undesirable words not present in said at least one library memory.

14. The method as recited in claim 11 wherein said undesirable words or phrases are stored in at least one library memory in a microcomputer and characters of closed-caption segments are compared with characters of such undesirable words or phrases for detection thereof.

15. The method as recited in claim 14 wherein there is a second library memory in addition to said at least one library memory, said second library memory having additional undesirable words not present in said at least one library memory.