Video Encoder Chip Integrates Filters, Amplifiers And DACs

Feb. 1, 1999
Output filters, amplifiers and D/A converters are all integrated on a video encoder IC that displaces up to a dozen external components that had been required to filter and amplify the analog output of a video encoder. The device accepts an

Output filters, amplifiers and D/A converters are all integrated on a video encoder IC that displaces up to a dozen external components that had been required to filter and amplify the analog output of a video encoder. The device accepts an 8-bit-wide, high-speed stream of uncompressed digital video from an MPEG decoder and converts it into analog video for playback on a monitor or TV in NTSC composite or S-Video formats.The chip comes in two versions. The ML6461 is for use in set-top boxes, digital cameras, camcorders, graphics cards and PCs. The ML6460 includes Macrovision copy protection for DVD applications. Each of the chips contains: a timing generator; closed-caption VBI encoder; three D/A converters; a summer circuit; two 6th-order, low-pass reconstruction filters; and three 75 ohm video amplifiers. The 8-bit digital input port accepts YCrCb video in either CCIR601 or square-pixel formats.

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!