Circuit for generating moving image tracking cursor

• US 5,287,177 A
• Filed: 06/19/1992
• Issued: 02/15/1994
• Est. Priority Date: 06/19/1991
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Hyeong-kwon
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/901,105
• Time in Patent Office: 606 Days
• Field of Search: 358/125, 358/224, 358/105
• US Class Current: 348/169
• CPC Class Codes: G01S 3/7864 T.V. type tracking systems
• CPC Class Codes: H04N 23/633 for displaying additional information relating to control or operation of the camera
• CPC Class Codes: H04N 9/74 for obtaining special effects H04N9/65 - H04N9/73 take precedence

Abstract

A circuit for generating a moving image tracking cursor in a camera, including a pickup for converting optical information into an electrical signal, a video signal processor for separating the picked-up signal into luminance and color signal, a filter for filtering only a high-band component of the separated luminance signal, a converter for converting the filtered signal into a digital signal, a detector for receiving the digital signal by predetermined intervals of picture, dividing the receiving signal by a plurality of subscreens, and integrating it by the subscreens, a motion forecasting circuit for calculating the difference between a current signal output from the converter and a precedingly detected signal, a cursor generator for variably designating the location of cursor in the subscreen where the largest integration is detected proportionally to the predicted amount of movement of the object, and a signal converter for mixing the cursor signal and a composite video signal.

Claims

1. A circuit for generating a moving image tracking cursor in a camera, comprising:

pickup means for converting optical information about an object into an electrical signal;

video signal processor means for separating the picked-up signal into luminance and color signals to output them as a composite video signal;

filter means for filtering only a high-band component of the separated luminance signal;

converter means for converting the filtered signal into a digital signal;

detector means for receiving the digital signal by predetermined picture intervals, dividing the receiving signal into a plurality of subscreens, and integrating it by the subscreens to detect the region having the largest integration;

motion forecasting means for calculating the difference between a current signal output from said converter and a precedingly detected signal to predict the amount of movement of the object;

cursor generator means for variably designating the location of a cursor in the subscreen where the largest integration is detected proportional to the predicted amount of movement of the object so as to generate a cursor signal; and

signal converter means for mixing the cursor signal and composite video signal.