Printer for printing video image

• US 5,093,730 A
• Filed: 11/21/1990
• Issued: 03/03/1992
• Est. Priority Date: 11/22/1989
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kohno, Tetsuya, Umeyama, Kazuya, Ishii, Kazuo
• Primary Examiner(s): Fuller, Benjamin R.
• Assistant Examiner(s): Rogers, Scott A.
• Application Number:
  US07/616,414
• Time in Patent Office: 468 Days
• Field of Search: 358/296, 358/401, 358/445, 358/451, 358/448, 358/449, 358/909, 358/140, 358/160, 358/406, 358/404, 358/444, 358/443, 382/47
• US Class Current: 358/296
• CPC Class Codes: H04N 1/0402 Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards H04N1/00283 takes precedence; picture signal circuits for modification of image resolution H04N1/3935, H04N1/40068
• CPC Class Codes: H04N 1/0417 Conversion of standards
• CPC Class Codes: H04N 1/12 using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanningsheet-feed movement by translatory movement of a flat picture-bearing surface H04N1/1008; main-scanning using oscillating or rotating mirrors H04N1/113; using multi-element arrays H04N1/19
• CPC Class Codes: H04N 1/193 using electrically scanned linear arrays , e.g. linear CCD arrays
• CPC Class Codes: H04N 1/32443 with asynchronous operation of the image input and output devices connected to the memory
• CPC Class Codes: H04N 2201/0077 Types of the still picture apparatus
• CPC Class Codes: H04N 2201/04756 by controlling the position or movement of the sheet, the sheet support or the photoconductive surface
• CPC Class Codes: H04N 2201/3288 Storage of two or more complete document pages or image frames
• CPC Class Codes: H04N 2201/3298 Checking or indicating the storage space

Abstract

A printer for printing video image having control circuits which are composed of a circuit for measuring a horizontal scanning frequency and the number of scanning lines of an input video signal, a circuit for calculating a sampling frequency of the video signal on the basis of the measured horizontal scanning frequency, and a circuit for calculating a moving pitch of a printing element for printing the video signal on the basis of the number of the scanning lines, wherein a printing range corresponding to the video signal is automatically determined by an output signal of the control circuits.

Claims

1. A printer for printing video image comprising:

control means including;

means for measuring a horizontal scanning frequency and the number of scanning lines of an input video signal;

means for calculating a sampling frequency of said video signal on the basis of the measured horizontal scanning frequency; and

means for calculating a moving pitch of a printing element for printing said video signal on the basis of the number of said scanning lines, wherein a printing range corresponding to said video signal is automatically determined by output signals of said control means.

2. A printer for printing video image comprising:

control means including;

means for measuring a horizontal scanning frequency and the number of scanning lines of an input video signal;

means for measuring an amount of information of one picture of said video signal on the basis of the horizontal scanning frequency and the number of scanning lines measured by said means for measuring the number of scanning lines; and

means for comparing said information amount with a storage capacity of a memory in which said video signal is stored, wherein the number of pictures which can be stored in said memory is automatically determined on the basis of a compared result of said control means.

3. A printer for printing video image according to claim 2, further comprising display means for displaying thereon the number of pictures which can be stored in said memory.

4. A printer for printing video image comprising:

means for measuring a horizontal scanning frequency and the number of scanning lines of an output video signal;

printing means having a plurality of printing elements for printing said video signal aligned on one line;

means for detecting the number of pixels of one line of said video signal generated in response to one line of said printing element on the basis of said horizontal scanning frequency or the number of said scanning lines;

means for comparing the number of pixels with the number of printing elements; and

processing means for processing the number of said pixels so as to be matched with the number of said printing elements on the basis of the compared result of said comparing means.