Digital video signal reproducing apparatus with high-speed play mode

a high-speed play and video signal technology, applied in the field of digital video signal reproducing apparatus, can solve problems such as unnatural images and difficulties in viewing

Inactive Publication Date: 2002-07-30
SONY CORP
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Therefore, it is an object of the present invention to provide digital video signal reproducing apparatus which reproduces at a high speed digital video signals that had previously been recorded on a magnetic tape, resulting in a video display which appears as a natural image.

Problems solved by technology

Hence, the resultant image which is reproduced from the data recovered from portions of respective tracks appears as a synthesized display which is perceived as an unnatural image which may be difficult to view.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Digital video signal reproducing apparatus with high-speed play mode
  • Digital video signal reproducing apparatus with high-speed play mode
  • Digital video signal reproducing apparatus with high-speed play mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

Referring now to the drawings, FIG. 1 is a block diagram of apparatus including a recording section for recording digital video signals on a magnetic tape 12 and a reproducing section for reproducing those digital video signals at relatively high playback speeds. The recording section includes an analog-to-digital converter 2 for receiving the video signal supplied thereto from an input terminal 1 and digitizing those video signals. As will be described, the recording section is adapted to record either NTSC or PAL video signals.

The digitized video signals, which constitute a frame of video samples, or picture elements (pixels), are assembled into blocks of data units, each unit being comprised of an 8.times.8 array of video samples, by a blocking circuit 3. The blocking circuit also is adapted to shuffle the data blocks, as will be described, and to subject the shuffled blocks to luminance / chrominance (Y / C) multiplexing, as is known to those of ordinary skill in the art. In particu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
anglesaaaaaaaaaa
variable lengthaaaaaaaaaa
azimuth anglesaaaaaaaaaa
Login to view more

Abstract

Apparatus for reproducing digital video signals from a magnetic tape, wherein a frame of digital video signals had been recorded in 2 m tracks (m is an integer greater than 1), in which a pair of rotary heads having respectively different azimuth angles scan traces across the magnetic tape, such traces substantially coinciding with the tracks when the magnetic tape is transported at a speed equal to the recording speed. The magnetic tape is transported at a high speed equal to (mxn±1) times the recording speed, where n is an integer greater than 0,1=0.5 when the pair of heads are arranged as a double azimuth head assembly and 1=0.25 when the heads are angularly separated by 180°.

Description

BACKGROUND OF THE INVENTIONThis invention relates to digital video signal reproducing apparatus and, more particularly, to such apparatus which is capable of reproducing digital video signals at a high speed, thereby providing a high speed play mode, from which a natural looking image may be displayed.Both analog and digital video recorders are known to record a frame of video signals in a plurality of slant tracks on a magnetic tape. For example, in an analog 8 mm video recorder, one video frame is recorded in two tracks. In a digital video recorder of the type known as the D-2 format, one frame of digital video signals is recorded in 12 slant tracks. Still further, a digital video recorder for consumer use has been proposed, wherein one frame of an NTSC video signal is digitized and recorded in 10 tracks and one frame of a PAL video signal is digitized and recorded in 12 tracks.In analog and digital video playback devices, such as a video recorder exhibiting a reproducing mode, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(United States)
IPC IPC(8): H04N7/52H04N9/804H04N5/783H04N5/7824H04N5/7826G11B15/467G11B5/008G11B5/53G11B15/12G11B15/18H04N5/782H04N5/919H04N5/92H04N9/888H04N9/896H04N21/236H04N21/432H04N21/434
CPCG11B5/00878G11B5/53G11B15/125G11B15/1875G11B15/467H04N5/78263H04N5/78266H04N5/783H04N5/919H04N9/8047H04N9/888H04N9/896H04N21/236H04N21/4325H04N21/434H04N19/85G11B5/02
Inventor OIKAWA, YUKA
Owner SONY CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap