Title:
ENCODING DEVICE AND RECORDING DEVICE
Document Type and Number:
Japanese Patent JP3794201
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent video information without the deterioration of picture quality from being illegally copied from an accumulation medium recording video information which is permitted to be copied once by detecting copy generation management information attached to inputted video information and executing encoding at a low picture quality mode when management information permitted to be copied once is detected.
SOLUTION: When a generation management information detection circuit 30 detects generation management information permitted to be copied once, a resolution selection circuit 40 outputs a signal indicating low resolution. A resolution reduction circuit 20 generates moving picture data whose resolution is reduced from moving picture data inputted to a video input terminal 10. A selection circuit 50 selects moving picture data outputted from the resolution reduction circuit 20 and supplies it to an encoding circuit 60. The encoding circuit 60 executes an encoding processing based on an MPEG 2 system. An output judgment circuit 190 outputs an indication for executing output and an output limit circuit 70 supplies encoding data outputted from the encoding circuit 60 to an encoding data output terminal 80.
Inventors:
High Mr. Hashi
Yukio Isobe
Yukio Isobe
Application Number:
JP13371699A
Publication Date:
July 05, 2006
Filing Date:
May 14, 1999
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04N1/41; H04N5/91; G06F21/10; G11B20/00; H04N5/76; H04N5/92; H04N19/00; H04N19/102; H04N19/132; H04N19/136; H04N19/176; H04N19/196; H04N19/467; H04N19/59; H04N19/60; H04N19/70; H04N19/80; H04N19/85; H04N19/91; H04N19/93; (IPC1-7): H04N5/91; H04N1/41; H04N5/92; H04N7/24
Domestic Patent References:
| JP4061580A | ||||
| JP7093894A | ||||
| JP2000175188A |
Attorney, Agent or Firm:
Yasuo Sakuta