Solid-state image pickup device

• US 20020044209A1
• Filed: 10/17/2001
• Published: 04/18/2002
• Est. Priority Date: 10/18/2000
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Saito, Shinichiro
• Granted Patent: US 7,126,633 B2
• Time in Patent Office: Days
• US Class Current: 348/280
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 25/133 including elements passing panchromatic light, e.g. filters passing white light
• CPC Class Codes: H04N 25/135 based on four or more different wavelength filter elements

Abstract

In a single plate type solid-state image pickup device having a color filter with primary color filters, gray filters are disposed at specific pixels of the arrangement of the primary color filters, whereby variation of the sense of resolution with respect to color can be prevented, and outline emphasis is applied to achieve an excellent image.

Claims

1. A single plate type solid-state image pickup device having primary-color type color filters, characterized in that gray filters are arranged at specific pixels of the arrangement of the three primary color filters.

2. The single plate type solid-state image pickup device as claimed in claim 1, wherein the color arrangement of said color filters is Bayer arrangement, and green filters that are adjacent to red filters in the horizontal direction or green filters that are adjacent to blue filters in the horizontal direction are replaced by said gray filters.

3. The single plate type solid-state image pickup device as claimed in claim 1, characterized by comprising:

means for taking carrier balance so that said gray filters have the same frequency characteristic as the other three primary color filters, and means for synthesizing an outline correcting signal.