Title:
MAGNETIC RECORDING/REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JPS63206075
Kind Code:
A
Abstract:
PURPOSE:To realize a PinP function with a low cost by using one digital memory system for compressing a sub-video signal corresponding to the sub-screen at the time of recording and using it for decreasing the noise bar of a special reproduction at the time of reproducing. CONSTITUTION:Into input terminals 1 and 2, a sub-video signal and a sound signal are respectively inputted from a video source suck as a video camera and a VTR. A desired broadcasting channel is received at an antenna 3 and a receiving part 9 and a main video signal and the sound signal are sent to switches 10, 11, 15 and 16. The sub-video signal from a switch 10 is supplied through a switch 12 to an A/D converter 20 and written to a memory 21. The video signal read from the memory 21 is supplied to an adding circuit 23 as the sub-video signal compressed on the time axis. Into an adding circuit 23, the main video signal is supplied from the switch 11, the sub-video signal compressed to a part of the main video signal is inserted and a synthesizing video signal is obtained.
Inventors:
KAWAMURA HITOSHI
MIZUTANI KEIICHI
MIZUTANI KEIICHI
Application Number:
JP3795087A
Publication Date:
August 25, 1988
Filing Date:
February 23, 1987
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H04N5/91; G11B5/027; H04N5/93; (IPC1-7): G11B5/027; H04N5/91; H04N5/93
Domestic Patent References:
| JPS55162675A | 1980-12-18 | |||
| JPS61170189A | 1986-07-31 | |||
| JPS5640369A | 1981-04-16 | |||
| JP61121078B |
Attorney, Agent or Firm:
Katsuo Ogawa