KR950030687A - Magnetic Screen Vertical Compressor - Google Patents

Abstract

A device for vertically compressing image data of a picture in picture (PIP) provided in one mother screen vertically inputs the PIP image data for each horizontal scan line and delays a predetermined period in the input order by one horizontal scan line period. An image data sequence forming unit for forming a connected image data sequence for each horizontal scan line, a control signal generator for generating a predetermined control signal by counting the image data sequence by one horizontal scan line, and corresponding to the control signal And a video data output unit for extracting and outputting one video data from the video data sequence. When the video of the parent screen is vertically stretched and the video of the PIP is also vertically stretched, some horizontal scan lines among the video data representing the PIP are displayed. Image of the PIP is vertically compressed by missing the image data corresponding to the It should be able to see the bodies PIP screen. The present invention can be applied to various video devices such as televisions and VTRs.

Description

Magnetic Screen Vertical Compressor

Since this is an open matter, no full text was included.

1A, 1B, and 1C show that a picture in picture (PIP) is vertically stretched when a parent screen is vertically stretched in a conventional video apparatus. 2A and 2B show a relationship between a mother screen and a mother screen in an image device employing a mother screen vertical compression apparatus according to the present invention. 3 is a schematic block diagram of a magnetic screen vertical compression apparatus according to an embodiment of the present invention.

Claims (6)

(a) Image data representing sub-screens provided in one mother screen are sequentially input for each horizontal scan line and delayed for one period in the input order by one horizontal scan line period to form a video data sequence connected by horizontal scan lines. Image data sequence forming means; (b) generating a control signal for counting the image data sequence by one horizontal scan line and generating a unique control signal representing the corresponding range whenever the count value corresponds to each of predetermined different horizontal scan line ranges; Way; And (c) image data output means for extracting and outputting one image data from the image data sequence in response to the control signal, wherein the image of the mother screen is vertically stretched so that the image of the mother screen is also vertically stretched. When the image of the magnetic screen is vertically compressed by omitting the image data corresponding to some horizontal scanning lines of the image data representing the magnetic screen, the magnetic screen vertical compression device. The vertical display apparatus of claim 1, wherein the image data sequence forming means comprises a predetermined number of delay elements connected in series. 2. The image data sequence forming means according to claim 1, wherein the image data sequence forming means sequentially inputs luminance signal data in the image data for each horizontal scan line and delays the predetermined time in the input order by one horizontal scan line period. Luminance signal data sequence forming means for forming a luminance signal data sequence; Chrominance signal data sequence forming means for sequentially inputting chrominance signal data in the image data by horizontal scanning lines and delaying a predetermined period in the input order by one horizontal scanning line period to form chrominance signal data sequences connected by horizontal scanning lines ; And forming a blank signal data sequence connected to each horizontal scan line by sequentially inputting blank signal data in the image data for each horizontal scan line and delaying a predetermined period in the input order by one horizontal scan line period. A magnetic screen vertical compression apparatus comprising a means. 2. The apparatus of claim 1, wherein the control signal generating means comprises: a counter for counting the video data sequence by one horizontal scan line and outputting a count value; The first signal is generated when a value corresponding to each of the ranges in a one-to-one correspondence range is input, and a second signal different from the first signal is generated when a value not included in the corresponding range is input. Discriminating means comprising: discriminating means for generating only the one sub discrimination part corresponding to one range to which the coefficient value belongs, the first signal and the remaining sub discriminating parts generating the second signal; And a multiplexer for outputting the control signal by inputting and multiplexing the output signals of the sub discrimination units. The vertical display device as claimed in claim 2, wherein the image data output means comprises a selection switch for selecting one of a plurality of signals extracted from each of the delay elements according to the control signal. 4. The apparatus of claim 3, further comprising: a comparator for comparing the count value with a predetermined sub picture start line value; And a blank signal output means including an AND operator for logically multiplying the output of the comparator and the blank signal data of the blank signal data sequence forming means, so that the blank signal data only when the count value is larger than the sub picture start line value. Magnetic screen vertical compression device characterized in that the output. ※ Note: This is to be disclosed by the original application.