DE484765C - Process for image decomposition or composition - Google Patents

Process for image decomposition or composition

Info

Publication number
DE484765C
DE484765C DET33541D DET0033541D DE484765C DE 484765 C DE484765 C DE 484765C DE T33541 D DET33541 D DE T33541D DE T0033541 D DET0033541 D DE T0033541D DE 484765 C DE484765 C DE 484765C
Authority
DE
Germany
Prior art keywords
image
scanning
lines
composition
width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DET33541D
Other languages
German (de)
Inventor
Dr Fritz Schroeter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DET33541D priority Critical patent/DE484765C/en
Priority to DET34373D priority patent/DE514896C/en
Priority to DET34640D priority patent/DE514897C/en
Priority to DET34840D priority patent/DE539408C/en
Priority to GB12916/28A priority patent/GB290973A/en
Priority to FR654018D priority patent/FR654018A/en
Priority to US286617A priority patent/US1757480A/en
Priority to US322785A priority patent/US1792767A/en
Priority to FR36211D priority patent/FR36211E/en
Application granted granted Critical
Publication of DE484765C publication Critical patent/DE484765C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/0664—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface with sub-scanning by translational movement of the picture-bearing surface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/1911—Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/203—Simultaneous scanning of two or more separate pictures, e.g. two sides of the same sheet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Description

Verfahren zur Bildzerlegung bzw. Zusammensetzung Es -hat sich bei der Bildübertragung gezeigt, daß durch Auslöschungen der Empfangsintensität in dem übertragenen Bilde dunkle Streifen auftreten. Diese dunklen Streifen wirken dann auf den Gesamteindruck des Bildes störend, wenn sie eine gewisse Breite besitzen, d. h. also, die Verringerung der Empfangsintensität der ankommenden hochfrequenten Schwingungen wirkt dann störend auf das übertragene Bild, wenn die Dauer der Verringerung der Empfangsintensität so groß ist, daß sie sich auf mehrere Bildzeilen, nach -denen das Bild auf der Sendeseite abgetastet bzw. auf der Empfangsseite zusammengesetzt wird, erstreckt. Bei den jetzt gebräuchlichen Anordnungen zur Bildübertragung beträgt die Breite einer Bildzeile etwa o,2 nun. Fällt eine einzige Zeile aus, so gibt das keine merkliche Störung des übertragenen Bildes. Im allgemeinen dauern aber die Schwächungen der elektromagnetischen Welle längere Zeit, so daß bei den üblichen Abtast- bzw. Zusammensetzverfahren, in denen nacheinander die einzelnen horizontalen oder vertikalen Bildzeilen übertragen werden, sich die Störung auf mehrere nebeneinanderliegende Zeilen erstreckt.Process for image decomposition or composition It has been shown in image transmission that, as a result of the extinction of the received intensity, dark stripes appear in the transmitted image. These dark stripes have a disruptive effect on the overall impression of the picture if they have a certain width, i.e. the reduction in the received intensity of the incoming high-frequency vibrations has a disruptive effect on the transmitted picture if the duration of the reduction in the received intensity is so great that it is close usamm consists scanned on a plurality of image lines according to -denen the image on the transmitting side, and z on the receiving side, extends. With the arrangements now in use for image transmission, the width of an image line is approximately 0.2 now. If a single line fails, there is no noticeable interference with the transmitted image. In general, however, the attenuation of the electromagnetic wave lasts for a longer time, so that with the usual scanning or composition processes in which the individual horizontal or vertical image lines are transmitted one after the other, the interference extends to several adjacent lines.

Gegenstand der vorliegenden Erfindung ist nun ein derartiges Übertragungsverfahren, bei dem diese Störungen, die durch Schwächungen der Empfangsintensität zustande kommen, beseitigt oder wenigstens in ihrer Wirkung herabgesetzt werden. Zu diesem Zweck wird gemäß der Erfindung die Übertragung des Bildes so vorgenommen, daß die Zerlegung des Bildes auf der Sendeseite und- folglich entsprechend die Zusammensetzung auf der Empfangsseite nicht durch dicht nebenemanderliegende aufeinanderfolgende Zeilen entsteht, sondern die Übertragung erfolgt derart, daß zunächst einige Zeilen, die auf dem Bilde einen relativ großen Abstand haben, nacheinander übertragen werden und daß daraufhin wiederum einige Zeilen im gleichen Abstand abgetastet und übertragen werden, wobei aber nun die relative Lage des Bildes zum Abtastorgan um die Breite einer Abtastzeile gegenüber der vorhergehenden Lage verschoben ist. Nach dieser zweiten Abtastung sind also immer je zwei nebeneinanderliegende Zeilen, die .durch einen größeren Abstand getrennt sind, übertragen. Bei .-der dritten Abtastung des Gesamtbildes verschiebt sich wiederum die Lage von Bild und Abtastorgan so, daß nunmehr immer je drei Zeilen nebeneinanderliegen und so weiter, bis das ganze Bild abgetastet ist.The subject of the present invention is such a transmission method, in which these disturbances, which are caused by weakening of the reception intensity come, be eliminated or at least diminished in their effect. To this Purpose is made according to the invention, the transfer of the image so that the Decomposition of the image on the transmission side and, consequently, the composition accordingly on the receiving side not by closely spaced consecutive Lines are created, but the transfer takes place in such a way that initially a few lines, which have a relatively large distance in the picture, are transferred one after the other and that thereupon a few lines are again scanned and transmitted at the same distance are, but now the relative position of the image to the scanning member to the width one scan line is shifted from the previous position. After this second scan are always two adjacent lines that .by separated by a greater distance. At the third sampling of the In turn, the overall image shifts the position of the image and the scanning element so that now there are always three lines next to each other and so on, until the whole picture is scanned.

Dieser Vorgang soll im folgenden schematisch erläutert werden. B sei nun das übertragende bzw. das entstehende Bild. Dann werden bei der ersten Übertragung die Zeilen x, 2, 3 nacheinander übertragen, bei der zweiten die Zeilen z', 2' und 3@, bei der dritten x", 2", 3" usw. Wie ohne weiteres ersichtlich, ist durch diese Ubertragungsfolge erreicht, daß die räumlich nebeneinanderliegenden Zeilen zeitlich nicht unmittelbar aufeinanderfolgen. Eine Auslöschung der Empfangsintensität, welche die Dauer der Übertragung von drei Zeilen hat und bei der bisher üblichen Übertragungsweise somit einen dunklen Streifen von der Breite dreier Zeilen ergeben würde, ergibt nach der neuen Übertragungsmethode drei räumlich voneinander mehr oder weniger weit entfernte einzelne Streifen, z. B. die Streifen i, 2, 3 in der Darstellung, und da die Breite eines solchen einzelnen Streifens sehr gering ist, so macht sich die Störung nicht oder kaum bemerkbar. Die Anordnung der einzelnen Vorrichtungen zur Ausübung des Übertragungsverfahrens nach der Erfindung ergibt sich aus dem Prinzip dieses Verfahrens. Was nun die einzelnen Vorrichtungen anbelangt, so können diese natürlich sehr mannigfaltig sein. Sie sind nach dem heutigen Stande der Technik in bezug auf die Abtastung und Zusammensetzung des Bildes und die Synchronisierung unschwer zu lösen. So kann z. B. die Abtastvorrichtung etwa in der Art beschaffen sein, daß mehrere Lochzeilen vorgesehen sind, welche nacheinander das Bild in größeren Abständen abtasten, und daß daraufhin nach der erstmaligen Abtastung durch eine .Antriebsvorrichtung der Bildstreifen um die Breite einer Abtastzeile verschoben wird. Dementsprechend muß dann natürlich auf der Empfangsseite die Zusammensetzvorrichtung arbeiten, d. h. die wiedergegebenen Bildzeilen müssen räumlich und zeitlich in gleicher Weise arbeiten wie die Vorrichtung auf der Sendeseite. Das vorliegende Verfahren ist natürlich nicht auf den näher besprochenen Fall beschränkt, bei dem die Abtastung und Zusammensetzung durch einander parallele Zeilen erfolgt, vielmehr entspricht dem Sinne der Erfindung ein jedes Verfahren, bei dem die Anordnung so getroffen wird, daß eine größere räumliche Trennung zeitlich aufeinanderfolgend zerlegter bzw. zusammengesetzter Bildteile stattfindet und daß umgekehrt folglich die räumlich dicht nebeneinanderliegenden und zu übertragenden Bildteile in zeitlich größeren Zwischenräumen abgetastet bzw. übertragen werden.This process is to be explained schematically in the following. B is now the transmitted or the resulting image. Then on the first transfer the lines x, 2, 3 are transmitted one after the other, with the second the lines z ', 2' and 3 @, in the third x ", 2", 3 "etc. As can be seen without further ado, this Transmission sequence achieved that the spatially adjacent Lines do not immediately follow one another in time. An extinction of the reception intensity, which has the duration of the transmission of three lines and with the previously usual Transfer mode thus result in a dark stripe three lines wide would result, according to the new transmission method, three more spatially from each other or less distant individual stripes, e.g. B. the strips i, 2, 3 in the Representation, and since the width of such a single strip is very small, so the disturbance is barely noticeable or not at all. The arrangement of each Devices for performing the transfer method according to the invention results itself from the principle of this procedure. As for the individual devices, so these can of course be very diverse. You are as it is today of the technique related to the sampling and composition of the image and the synchronization easy to solve. So z. B. procure the scanning device like that be that several rows of holes are provided, which one after the other the picture in larger Scan distances, and that then after the first scan by a .Drive device of the image strips shifted by the width of a scan line will. Accordingly, the assembly device must then of course on the receiving side work, d. H. the reproduced picture lines must be spatially and temporally the same Way work like the device on the sending side. The present proceedings is of course not limited to the case discussed in more detail in which the scanning and composition is made by parallel lines, rather corresponds within the meaning of the invention, any method in which the arrangement is so made becomes that a larger spatial separation is broken down successively in time or composed image parts takes place and that vice versa consequently the spatial parts of the image that are close to one another and are to be transmitted in larger parts of the time Intermediate spaces are scanned or transmitted.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Bildzerlegung bzw. Zusammensetzung, bei dem im gleichen Augenblick nur eine Abtastvorrichtung bzw. Schreibvorrichtung wirksam ist, dadurch gekennzeichnet, daß mehrere Bildzeilen, die zeitlich unmittelbar nacheinander zerlegt bzw. zusammengesetzt werden, räumlich nicht unmittelbar-nebeneinanderliegen. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das gesamte Bild zunächst in einigen Zeilen, die um ein Vielfaches der Breite einer Abtast- bzw. Bildzeile voneinander entfernt sind, nacheinander abgetastet bzw. zusammengesetzt wird und daraufhin die relative Lage von Abtastorgan und Bild oder Bildwiedergabe= organ und Schirm oder photographisches Papier o. dgl., auf welchem das Bild entsteht, um die Breite einer Abtast- oder Bildzeile verschoben wird.PATENT CLAIMS: i. Process for image decomposition or composition, at the same moment only one scanning device or writing device is effective, characterized in that several image lines, the temporally immediate are dismantled or put together one after the other, are not spatially directly adjacent to one another. a. Method according to Claim i, characterized in that the entire image is initially in a few lines that are a multiple of the width of a scanning or image line are spaced apart, sequentially scanned or assembled, and then the relative position of scanning organ and image or image reproduction = organ and screen or photographic paper or the like on which the image is created, is shifted by the width of a scanning or image line.
DET33541D 1927-05-21 1927-05-21 Process for image decomposition or composition Expired DE484765C (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DET33541D DE484765C (en) 1927-05-21 1927-05-21 Process for image decomposition or composition
DET34373D DE514896C (en) 1927-05-21 1927-12-13 Device for image decomposition or composition
DET34640D DE514897C (en) 1927-05-21 1928-02-06 Device for image decomposition or composition
DET34840D DE539408C (en) 1927-05-21 1928-03-14 Device for image decomposition or composition according to the jump line method
GB12916/28A GB290973A (en) 1927-05-21 1928-05-02 Improvements in or relating to picture and the like telegraph systems
FR654018D FR654018A (en) 1927-05-21 1928-05-09 Process of decomposition and recomposition of images in installations for the transmission of facsimiles
US286617A US1757480A (en) 1927-05-21 1928-06-19 Fading elimination in radio picture-transmission systems
US322785A US1792767A (en) 1927-05-21 1928-11-30 Facsimile system
FR36211D FR36211E (en) 1927-05-21 1928-12-12 Process of decomposition and recomposition of images in installations for the transmission of facsimiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET33541D DE484765C (en) 1927-05-21 1927-05-21 Process for image decomposition or composition

Publications (1)

Publication Number Publication Date
DE484765C true DE484765C (en) 1930-05-26

Family

ID=7557848

Family Applications (1)

Application Number Title Priority Date Filing Date
DET33541D Expired DE484765C (en) 1927-05-21 1927-05-21 Process for image decomposition or composition

Country Status (4)

Country Link
US (1) US1757480A (en)
DE (1) DE484765C (en)
FR (1) FR654018A (en)
GB (1) GB290973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944557C (en) * 1932-07-19 1956-06-21 Rca Corp Sound film remote transmission system with perforated disc scanning and playback through Braun's tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944557C (en) * 1932-07-19 1956-06-21 Rca Corp Sound film remote transmission system with perforated disc scanning and playback through Braun's tube

Also Published As

Publication number Publication date
GB290973A (en) 1929-05-09
US1757480A (en) 1930-05-06
FR654018A (en) 1929-03-29

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