JPS6441394A - Movement detection circuit - Google Patents

Movement detection circuit

Info

Publication number
JPS6441394A
JPS6441394A JP62197604A JP19760487A JPS6441394A JP S6441394 A JPS6441394 A JP S6441394A JP 62197604 A JP62197604 A JP 62197604A JP 19760487 A JP19760487 A JP 19760487A JP S6441394 A JPS6441394 A JP S6441394A
Authority
JP
Japan
Prior art keywords
signal
output
comparison
level
frame difference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62197604A
Other languages
Japanese (ja)
Other versions
JPH0728425B2 (en
Inventor
Shigeo Niitsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62197604A priority Critical patent/JPH0728425B2/en
Publication of JPS6441394A publication Critical patent/JPS6441394A/en
Publication of JPH0728425B2 publication Critical patent/JPH0728425B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To output a signal as a natural movement signal by detecting a jitter of a synchronizing signal for the comparison of a frame difference detection signal using a frame memory and varying the comparison level in response to the level. CONSTITUTION:Since the value of a frame difference output of a synchronizing signal portion is fluctuated in response to time fluctuation, the output is integrated over several-several tens frames by an integration circuit 16 to apply pseudo DC processing. The value 17 and the output from a frame difference detection circuit 13 are compared by a comparison circuit 18 to obtain a binarized detection output 19. Then a comparison level 17 is approached to '0' with respect to a signal having a time fluctuation such as a VTR signal so as to be in moving direction and in case of the input of a normal NTSC signal input, the comparison level is increased and still picture and moving picture are separated correctly. Thus, unnatural changeover is avoided to obtain natural movement.
JP62197604A 1987-08-07 1987-08-07 Motion detection circuit Expired - Lifetime JPH0728425B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197604A JPH0728425B2 (en) 1987-08-07 1987-08-07 Motion detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197604A JPH0728425B2 (en) 1987-08-07 1987-08-07 Motion detection circuit

Publications (2)

Publication Number Publication Date
JPS6441394A true JPS6441394A (en) 1989-02-13
JPH0728425B2 JPH0728425B2 (en) 1995-03-29

Family

ID=16377232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197604A Expired - Lifetime JPH0728425B2 (en) 1987-08-07 1987-08-07 Motion detection circuit

Country Status (1)

Country Link
JP (1) JPH0728425B2 (en)

Also Published As

Publication number Publication date
JPH0728425B2 (en) 1995-03-29

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