Method and apparatus for detecting motion vectors

• Main Author: OGURA EIJI
• Format: Patent
• Language: English
• Published: 17.04.2001
• Edition: 7
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

A motion vector detecting apparatus has a first storage unit through a fourth storage unit. The first storage unit stores top-field pixel data of odd-numbered rows or odd-numbered columns. The second storage unit stores top-field pixel data of even-numbered rows or even-numbered columns. The third storage unit stores bottom-field pixel data of odd-numbered rows or odd-numbered columns. The fourth storage unit stores bottom-field pixel data of even-numbered rows or even-numbered columns. The selector selects pixel data of a predetermined search block from the pixel data stored in the first storage unit through the fourth storage unit. A fifth storage unit stores at least interleaved pixel data among pixel data of the reference block. A first calculator performs a calculation to obtain the difference between the pixel data of the search block selected by the selector and the pixel data of the reference block stored in the fifth storage unit. A second calculator performs a calculation to obtain the sum of the differences within each search block. A detector detects the search block having the minimum value of the calculations performed by the second calculator. This prevents pipeline processing for transferring pixel data and reduces the power consumption.