EP0516319A2
Expired / Lapsed
EP
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Video printer
Assignee: Samsung Electronics Co Ltd
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Filing: 1992-05-18
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Granted: —
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Expires: 2012-05-18
Abstract
Abstract A color video printer, for printing color video signals, includes a data conversion means (60) that has an internal memory that receives digitised input chrominance signals and stores pixel data at addresses corresponding to the raster scan of an interlaced video field. The data can be read out in sequential rows by a monitor address means (78) to provide a signal for display on a monitor. Also, the data is be read out in columns to be fed to a memory (68) for printing column by column. Each column is read out by a printing address generating means (76) during the vertical blanking pulse between fields of the scan. R.G.B. data is read out column by column sequentially during successive blanking pulses.
Inventors
- 👤 Hee-Kuk Kwak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; H; H04; H04N; H04N1/00; H04N1/00127; H04N1/00281; H04N1/00283; H04N1/00291; H04N1/00294; H04N1/46; H04N1/64; H04N1/646; H04N5/00; H04N5/44; H04N5/4448
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
A video printer comprising: means (60) responsive to data representative of successive lines of a video raster scan to derive therefrom data representative of successive columns of data extending transversely across lines of the scan, and printing means (70, 72) for printing the columns of data successively, characterised by data conversion means (60) including memory means (82) for storing data representative of at least one field of the raster scan, and means (76, 80) for reading the columns of data from the memory means (82), the columns of data being output to the printing means during respective successive periods associated with the occurrence of successive field periods of the scan.
Claim 2
Dependent Claim
110 words
A video printer comprising: means (60) responsive to data representative of successive lines of a video raster scan to derive therefrom data representative of successive columns of data extending transversely across lines of the scan, and printing means (70, 72) for printing the columns of data successively, characterised by data conversion means (60) including memory means (82) for storing data representative of at least one field of the raster scan, and means (76, 80) for reading the columns of data from the memory means (82), the columns of data being output to the printing means during respective successive periods associated with the occurrence of successive field periods of the scan.
Claim 3
Dependent Claim
40 words
A video printer according to claim 1 wherein successive fields of the raster scan have associated therewith respective blanking periods, and the columns of data are read from the memory means (82) during respective successive ones of the blanking periods.
Claim 4
Dependent Claim
50 words
A video printer according to claim 1 or 2 including video output means (62, 64) to receive said raster scan read from said memory means, and monitoring address generating means (78) for addressing the memory means (82) to produce said scan raster scan for the video output means (62, 64).
Claim 5
Dependent Claim
46 words
A video printer according to any preceding claim wherein said raster scan data is representative of a color video display, and said memory means (82) includes a plurality of memory units (82a, b, c) to store respective different color representing signals for the raster scan field.
Claim 6
Dependent Claim
21 words
A video printer according to claim 4 wherein the printing means is operative to print said different color representing signals successively.
Claim 7
Dependent Claim
31 words
A video printer according to any preceding claim including printing address generating means (76) for supplying address signals to the memory means (82) to derive each said column of data successively.
Claim 8
Dependent Claim
32 words
A video printer according to any preceding claim including recording address generating means (74) for generating storage addresses in the memory means (82) for input video data representative of said raster scan.
Claim 9
Dependent Claim
35 words
A printer according to claim 5 wherein each color representing data for a field thereof stored in the memory means is printed during a period associated with a respective field period of the raster scan.
Claim 10
Dependent Claim
141 words
A high speed color video printer comprising: a data converting means wherein digitalised video signals are stored into internal memory means, column unit of video data is outputted during one field period of blanking signal interval, and field unit of video data is outputted to a display side during a residual period which excludes a periods whereunder video data is outputted to print during one field period; a selective means which selectively outputs one color of video data out of column unit of video data outputted from said data converting means; a line memory means which causes to print by storing and then outputting video data selectively outputted by said selective means; a DAC means which cases to perform a display by converting field unit of video data outputted from said data converting means to analog signals and then by outputting.
Claim 11
Dependent Claim
141 words
A high speed color video printer comprising: a data converting means wherein digitalised video signals are stored into internal memory means, column unit of video data is outputted during one field period of blanking signal interval, and field unit of video data is outputted to a display side during a residual period which excludes a periods whereunder video data is outputted to print during one field period; a selective means which selectively outputs one color of video data out of column unit of video data outputted from said data converting means; a line memory means which causes to print by storing and then outputting video data selectively outputted by said selective means; a DAC means which cases to perform a display by converting field unit of video data outputted from said data converting means to analog signals and then by outputting.
References Cited (Backward Citations)
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