Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor

• US 7,248,607 B2
• Filed: 11/07/2001
• Issued: 07/24/2007
• Est. Priority Date: 09/02/1997
• Status: Expired due to Fees

• Current Assignee: Maxell, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Arai, Takao, Yoshiura, Hiroshi, Takeuchi, Toshifumi, Kawamae, Osamu
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): HOANG, THAI D
• Application Number:
  US09/986,090
• Publication Number:
  US 20020049953A1
• Time in Patent Office: 2,085 Days
• Field of Search: 370522-523, 370/528, 369/44.26, 369 47- 48, 369 50- 59, 714746-755
• US Class Current: 370/529
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: H03M 13/13 Linear codes
• CPC Class Codes: H03M 13/6306 Error control coding in combination with Automatic Repeat reQuest [ARQ] and diversity transmission, e.g. coding schemes for the multiple transmission of the same information or the transmission of incremental redundancy H03M13/3761, H03M13/3769 and H03M13/635 take precedence
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04N 1/32149 Methods relating to embedding, encoding, decoding, detection or retrieval operations
• CPC Class Codes: H04N 1/32288 Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
• CPC Class Codes: H04N 19/467 characterised by the embedded information being invisible, e.g. watermarking
• CPC Class Codes: H04N 2201/3284 for error correction

Abstract

In a data transmission method for information data containing additional information data therewith, comprising, at a transmitter side, following steps:

• • adding error correction codes for correcting error to said additional information data;
  • embedding said additional information data added with said error correction codes into the information data by plural times, repetitively; and
  • transmitting the information data embedded with the repetitive additional information data therein, and comprising, at a receiver side, following steps:
  • receiving the transmitted information data embedded with the repetitive additional information data therein;
  • detecting the repetitive additional information data embedded from said transmitted information data received;
  • determining said additional information data on a basis of a majority rule when receiving said information data; and
  • correcting error with using the error correction codes received and determined when said additional information data contains error(s) therein.

Claims

1. A data transmission and reception method for information data containing additional information data, comprising, at a transmitter side, following steps:

a step for preparing data frames of said information data into which the additional information data are to be embedded,

a step for altering at least part of each data frame in accordance with predetermined patterns corresponding to the additional information data to be embedded, for the plural continuous frames, repetitively, and

a step for transmitting the information data embedded with the repetitive additional information data therein; and

further comprising, at a receiver side, following steps;

a step for receiving the transmitted information data embedded with the repetitive additional information data therein,

a step for detecting the repetitive additional information data embedded from said transmitted information data, and

a step for determining said additional information data based on continuity of the repetitive additional information data detected for a predetermined times.

2. A data transmission and reception method as claimed in claim 1, wherein said information data includes at least one of video data, audio data and text data.

3. A data transmission and reception method as claimed in claim 1, wherein said information data includes at least one of video data, audio data and text data.

4. A system comprising:

a data transmitting apparatus for transmitting information data containing additional information data therewith; and

a data reproducing apparatus for reproducing the transmitted information data transmitted by the data transmitting apparatus,

wherein said data transmitting apparatus comprises;

first means for preparing data frames of said information data into which the additional information data are embedded,

second means for altering at least part of each of the data frames in accordance with predetermined patterns corresponding to additional information data to be embedded, for the plural continuous frames, repetitively, and

third means for transmitting the information data embedded with the repetitive additional information data therein, and

wherein said data reproducing apparatus comprises;

first means for receiving the transmitted information data embedded with the repetitive additional information data therein,

second means for detecting the repetitive additional information data embedded from said transmitted information data, and

third means for determining said additional information data based on continuity of the repetitive additional data detected for a predetermined times.