← Back to Patent Explorer
JP2002171397A Expired / Lapsed JP ⏱️ 0.0 years remaining

Digital image transmission device

Assignee: Panasonic Holdings Corp
•
Filing: 2000-12-01
•
Granted: —
•
Expires: 2020-12-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 新たに制御用の伝送路を設けること無く、デ ィジタル画像信号と制御情報の両方を伝送することので きるディジタル画像伝送装置を提供すること。 【解決手段】 ディジタル画像信号31aを複数の周波 数帯域の変換係数列に分割する帯域分割手段45と、デ ィジタル画像信号31aと共に伝送する制御情報33a 固有の疑似乱数列を発生する乱数発生手段47と、変換 係数列と擬似乱数列を乗算合成する乗算器49とを含 み、ディジタルデータ35に制御情報33aを埋め込ん で送信する送信装置30と、伝送路37を介して受信し たディジタルデータ35をディジタル画像信号31bに 帯域合成する帯域合成手段51と、制御情報固有の疑似 乱数列を全て発生する乱数発生手段53と、入力した信 号と疑似乱数列の内積を取る積和演算器55と、得られ た内積の中から最大値をもつ制御情報を判定する判定手 段57とを含み、制御情報33bを抽出する受信装置4 0とを備える。 (57) [Problem] To provide a digital image transmission device capable of transmitting both a digital image signal and control information without newly providing a transmission line for control. SOLUTION: Band dividing means 45 for dividing a digital image signal 31a into a series of transform coefficients of a plurality of frequency bands, and control information 33a transmitted together with the digital image signal 31a. A transmitting device 30 including a random number generating means 47 for generating a unique pseudo random number sequence, a multiplier 49 for multiplying and combining the transform coefficient sequence and the pseudo random number sequence, transmitting the control data 33a by embedding the control information 33a in the digital data 35, Band synthesizing means 51 for synthesizing the digital data 35 received via the path 37 to the digital image signal 31b, random number generating means 53 for generating all pseudo-random number sequences unique to control information, A receiver 4 for extracting the control information 33b, including a product-sum calculator 55 for taking the inner product, and determining means 57 for determining the control information having the maximum value from the obtained inner product. 0.

Inventors

  • 👤 Hideo Oi
  • 👤 秀朗 尾井

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 19:59
CPC Classifications
—

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag