MTV512M
Myson Century Inc
MTV512M 8051 Embedded Monitor Controller 64K Falsh Type by Myson Century Inc (PLCC 44 Pin Type): datasheet PDF, pinout and specifications.
Integrated Circuit - IC's PLCC 44 Pin Type
Myson Century is a Taiwanese fabless company that designed display controllers, including on-screen-display (OSD) and monitor controller ICs such as the MTV series used in CRT and LCD monitors.

MTV512M 8051 Embedded Monitor Controller 64K Falsh Type by Myson Century Inc (PLCC 44 Pin Type): datasheet PDF, pinout and specifications.
MTV038N On-screen-display controller for CRT/LCD monitor by Myson Century Inc (DIP, SOP 16 Pin Type): datasheet PDF, pinout and specifications.