Title:
AUTOMATIC CHANGEOVER CIRCUIT OF RECORDING MODE
Document Type and Number:
Japanese Patent JPH0678266
Kind Code:
A
Abstract:
PURPOSE: To provide a recording mode automatic switching circuit so that the recording mode is switched automatically when a monitor camera detects operation during intermittently recording, images are recorded continuously as a matter of course and operation detection is executed in a diagonal direction of a screen. CONSTITUTION: This circuit is provided with a pickup means 10 which converts optical information for an object into an electric signal, a signal processing means 20 which separates the electric video signal of the pickup means 10 into a composite video signal and a luminance signal, an operation detecting means 30 which detects a difference between a previous field and a current field for diagonal-directional pixels of the luminance signal from the signal processing means 20, an operation discriminating means 40 which discriminates an operation state by comparing the operation outputted from the operation detecting means 30 with a reference value, a mode control means 50 which switches a recording mode according to a discriminating value of the operation discriminating means 40 and a recording means 60 which records an output signal of the signal processing means 20 according to a mode switched by the mode control means 50.
Inventors:
KIN KIYUU
Application Number:
JP21793492A
Publication Date:
March 18, 1994
Filing Date:
August 17, 1992
Export Citation:
Assignee:
SAMSUNG ELECTRONIC
International Classes:
G11B15/02; G08B13/194; H04N5/14; H04N5/7826; H04N5/915; H04N7/18; H04N5/782; (IPC1-7): H04N5/91; G11B15/02; H04N5/782; H04N7/18
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)
Next Patent: VIDEO SIGNAL RECORDING DEVICE