Ren Egawa

Title: Ren Egawa: Innovator in Video Decoding Technology

Introduction

Ren Egawa is a prominent inventor based in Princeton, NJ (US), known for his significant contributions to video decoding technology. With a total of five patents to his name, Egawa has made notable advancements in the field of high-definition television systems.

Latest Patents

One of Egawa's latest patents is an HDTV downconversion system. This innovative video decoder is compliant with the Advanced Television Systems Standard (ATSC) and includes circuitry that decodes an ATSC encoded image. It employs a downconversion process to produce a standard definition video signal. The video decoder features a frequency-domain filter to reduce the resolution of the ATSC encoded signal. Additionally, it includes a formatting section with vertical and horizontal filters, as well as resampling processing, to format the decoded and downconverted video image for specific displays and aspect ratios. The decoder is capable of sensing the display format of the encoded video signal and adjusts its processing to ensure a standard definition output signal, regardless of the input signal's display format. Furthermore, the system incorporates a format converter that can be programmed to utilize various methods for converting the aspect ratio of the input signal for display on devices with different aspect ratios.

Another significant patent by Egawa is the upsampling filter and half-pixel generator for an HDTV downconversion system. This system, also compliant with the ATSC, includes a decoder that decodes a Main Profile, High Level (MP@HL) image and employs a downconversion processor to produce a standard definition video signal. It stores a subsampled image to reduce memory requirements and utilizes an upsampling filter to generate reference image data from the stored subsampled image. The reference image data spatially corresponds to the image data produced by the video decoder before subsampling. The upsampling filter employs different filter coefficients based on the subsampling phase of the stored image and the half-pixel indicator in the motion vector, which is used to locate the downsampled reference image data.

Career Highlights

Throughout his career, Ren Egawa has worked with notable companies, including Matsushita Electric Industrial Co., Ltd. and Matsushita Electric Corporation of America. His work in these organizations has significantly influenced the development of video technology.

Collaborations

Egawa has collaborated with esteemed colleagues such as Edwin Robert Meyer and Hee-Yong Kim, contributing to the advancement