US 9,071,750 B2Granted

Semiconductor integrated circuit and multi-angle video system

AssigneeRenesas Electronics Corporation

InventorsHiroshi Osuga, Takaaki Suzuki, Atsushi Kiuchi, Kazuhide Kawade, Hiroyuki Hamasaki

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present invention is provided to lessen load on a bus in the case of storing image data captured by a plurality of cameras into a semiconductor memory. To a semiconductor integrated circuit, a plurality of cameras and a semiconductor memory can be coupled. The semiconductor integrated circuit includes a plurality of first interfaces, a second interface, a bus, and a plurality of image processing modules. The image processing modules include a process of performing distortion correction on image data in a pre-designated region, and writing the image data in the region subjected to the distortion correction into the semiconductor memory via the bus and the second interface. By excluding image data out of the pre-designated region from an object of distortion correction in the image processing modules, the amount of image data transferred to the semiconductor memory is reduced.

Claims9

Dependent claims

A semiconductor integrated circuit on a single semiconductor substrate and for use with a plurality of cameras and a semiconductor memory, comprising:

a plurality of first interfaces configured to fetch first image data captured by the plurality of cameras, respectively;
and
a plurality of image processing modules coupled to the plurality of first interfaces and each said image processing module being configured to perform a predetermined data process on the first image data received from the corresponding first interface and being configured to output corrected image data by
extracting second image data from a pre-designated region of the first image data fetched by the corresponding first interface;
performing distortion correction on the extracted second image data to provide the corrected image data;
and
writing the corrected image data into the semiconductor memory via a bus and a second interface,
wherein the bus is coupled to outputs of the plurality of image processing modules, and
wherein the second interface is coupled to the bus and configured to transmit the corrected image data to the semiconductor memory and to receive the corrected image data from the semiconductor memory.

6 more elements

A multi-angle video system comprising:

first to fourth cameras each with a fish-eye lens;
a memory;
a display panel;
and
a semiconductor integrated circuit on a single semiconductor substrate, the semiconductor integrated circuit comprising
first to fourth terminals to which the first to fourth cameras are coupled, respectively;
first to fourth interfaces coupled to the first to fourth terminals, respectively, and each configured to fetch first image data captured by the plurality of cameras, respectively;
first to fourth image processing modules coupled to the first to fourth interfaces, respectively, and each configured to
extract second image data from a predetermined area of the first image data fetched by a corresponding one of the first to fourth interfaces;
perform distortion correction on the extracted second image data to provide the corrected image data;
and
output the corrected image data to be written to the memory;
a bus coupled to the first to fourth image processing modules;
a fifth terminal coupled to the memory;
a fifth interface coupled between the bus and the fifth terminal, the corrected image data from the first to fourth image processing modules being written to the memory via the bus and the fifth interface;
a sixth terminal coupled to the display panel;
and
a display control unit coupled between the bus and the sixth terminal, the corrected image data in the memory being provided to the display panel as ff-display data via the fifth interface, the bus, and display control unit.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/274,324Filed 15 Oct 2011
Priority: JP 2010-24044427 Oct 2010
Published: US 2012/0105679 A13 May 2012
Granted: 30 Jun 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G06T 5/80
Image enhancement or restoration: geometric correction
H04N 5/77
Interface circuits between an apparatus for recording and another apparatus: between a recording apparatus and a television camera
H04N 5/907
Television signal recording: using static stores, e.g. storage tubes or semiconductor memories
H04N 23/698
Control of cameras or camera modules: for achieving an enlarged field of view, e.g. panoramic image capture