KR970025105A

KR970025105A - Character on-screen display device

Info

Publication number: KR970025105A
Application number: KR1019950035372A
Authority: KR
Inventors: 이용현
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-10-13
Filing date: 1995-10-13
Publication date: 1997-05-30

Abstract

본 발명은 문자 오우버 레이를 위한 문자 온 스크린 디스플레이장치에 관한 것으로서, 수평 어드레스 영상데이타 저장부; 수직 어드레스 영상 데이타 저장부; 수평 어드레스 문자 데이타 저장부; 수직 어드레스 문자 데이타 저장부; 상기 수평 어드레스 영상 데이타 저장부의 수평 어드레스와 상기 수평 어드레스 문자 데이타 저장부의 수평 어드레스를 비교하여 수평 어드레스 문자 데이타 저장부에 데이타가 존재하면 수평 어드레스 문자데이타 저장부의 데이타를 선택하는 수평 어드레스 비교기; 상기 수직 어드레스 영상 데이타 저장부의 수직 어드레스와 상기 수직 어드레스 문자 데이타 저장부의 수직 어드레스를 비교하여 수직 어드레스 문자 데이타 저장부에 데이타가 존재하면 수직 어드레스 문자 데이타 저장부의 데이타를 선택하는 수직 어드레스 비교기; 수평 어드레스 발생부, 수직 어드레스 발생부; 수평 쉬프트 레지스터; 수직 쉬프트 레지스터; 수평/수직 어드레스 선택 제어부; 및 수평/수직 어드레스 선택부를 포함한다. 따라서 영상 데이타 저장부와 문자 데이타 저장부를 별도로 설치함으로써, 영상 화면과 문자 화면을 동시에 시청할 수 있도록 하는 효과를 제공한다.The present invention relates to a text on screen display device for a text overlay, comprising: a horizontal address image data storage unit; A vertical address image data storage unit; A horizontal address character data storage; A vertical address character data storage; A horizontal address comparator that compares a horizontal address of the horizontal address image data storage unit with a horizontal address of the horizontal address character data storage unit and selects data of the horizontal address character data storage unit if data exists in the horizontal address character data storage unit; A vertical address comparator for comparing the vertical address of the vertical address image data storage unit with the vertical address of the vertical address character data storage unit and selecting data of the vertical address character data storage unit if data exists in the vertical address character data storage unit; A horizontal address generator and a vertical address generator; Horizontal shift registers; Vertical shift registers; A horizontal / vertical address selection controller; And a horizontal / vertical address selector. Therefore, by installing the image data storage unit and the text data storage unit separately, it provides an effect that the video screen and the text screen can be viewed simultaneously.

Description

Character on-screen display device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의한 문자 온 스크린 디스플레이장치의 개요도이다.1 is a schematic diagram of a character on-screen display device according to the present invention.

Claims

A horizontal address image data storage unit for storing horizontal address values of M + b image data; A vertical address image data storage unit for storing vertical address values of N + a image data; A horizontal address character data storage unit for storing a predetermined number of horizontal address values of the character data; A vertical address character data storage unit for storing a vertical address value of a predetermined number of character data; A horizontal address comparator that compares a horizontal address of the horizontal address image data storage unit with a horizontal address of the horizontal address character data storage unit and selects data of the horizontal address character data storage unit if data exists in the horizontal address character data storage unit; A vertical address comparator for comparing the vertical address of the vertical address image data storage unit with the vertical address of the vertical address character data storage unit and selecting data of the vertical address character data storage unit if data exists in the vertical address character data storage unit; A horizontal address generator for generating a horizontal address output from the horizontal address comparator; A vertical address generator for generating a vertical address output from the vertical address comparator: a horizontal shift register for selecting M addresses from among M + b horizontal addresses generated by the horizontal address generator; Vertical shift register for selecting N addresses from among N + a vertical addresses generated in the vertical address generator: selecting M addresses by setting an initial value among M + b horizontal addresses generated in the horizontal address generator A horizontal / vertical address selection control unit which transmits a control response signal to the horizontal shift register and the vertical shift register to select N addresses by setting an initial value among the N + a vertical addresses generated by the vertical address generator; And a horizontal / vertical address selection unit for selecting a signal output from the horizontal shift register and the vertical shift register.