Video tape recorder capable of recording both narrow band and wideband signals
January 25, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVideo recording apparatus having low and high resolution operational modes VTR having magnetic-head array capable of recording/reproducing signals of a plurality of recording systems Recording/reproduction system with a fine picture quality for a helical scan-type video tape recorder Video signal recording method and associated recording/reproducing apparatus Apparatus for recording low and high bond components of a chrominance signal Patent #: 4851928 InventorAssigneeApplicationNo. 303743 filed on 01/25/1989US Classes:386/27, Compressing when recording or decompressing when reproducing360/22, SPLITTING ONE INFORMATION SIGNAL FOR RECORDING ON PLURAL DISTINCT TRACKS OR REPRODUCING SUCH SIGNAL360/73.06, Automatic change between fixed speeds386/37High definition television recording or reproducingExaminersPrimary: Richardson, Robert L.Attorney, Agent or FirmInternational ClassH04N 005/782Foreign Application Priority Data1988-01-25 JPAbstractDisclosed is a video tape recorder capable of recording and reproducing signals with largely different frequency bands such as narrow band signals including NTSC signal and wide band signals represented by high definition television signal. In a time axis expansion circuit, wide band signals are expanded of their time axis and divided into plural channels, and the band frequencies of these channels are lowered, and at the same time, the widths of plural heads are set narrower than the head width used when recording and reproducing the existing narrow band signals, thereby realizing the recording and reproduction of narrow band signals and wide band signals at identical rotating speed of the cylinder and at identical rotating speed of the capstan. Or, the rotating speed of the cylinder is increased when recording and reproducing wide band signals and the head width used for recording and reproducing wide band signals is set narrower than the head width used when recording and reproducing the existing wide band signals, thereby realizing the recording and reproduction of narrow band signals and wide band signals at identical rotating speed of the capstan.Field of SearchCONVERTING AN ANALOG SIGNAL TO DIGITAL FORM FOR RECORDING; REPRODUCING AND RECONVERTINGSPLITTING ONE INFORMATION SIGNAL FOR RECORDING ON PLURAL DISTINCT TRACKS OR REPRODUCING SUCH SIGNAL RECORDING OR REPRODUCING AN INFORMATION SIGNAL AND A CONTROL SIGNAL FOR CONTROLLING ELECTRONICS OF REPRODUCER MODULATING OR DEMODULATING Frequency | |
