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
GB3935/34A
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
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbHfiledCriticalTelefunken AG
Publication of GB423765ApublicationCriticalpatent/GB423765A/en
H04N5/067—Arrangements or circuits at the transmitter end
H04N5/0675—Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually
Landscapes
Engineering & Computer Science
(AREA)
Multimedia
(AREA)
Signal Processing
(AREA)
Television Systems
(AREA)
Abstract
423,765. Television. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 6, 1934, No. 3935. Convention date, Feb. 6, 1933. Addition to 413,561. [Classes 40 (iii) and 40 (v)] A high - frequency carrier is modulated symmetrically about a mean value M by a sub-carrier modulated by picture signals, and synchronizing signals T2, which alternate with periods T1 of picture transmission, reduce the transmitted current to zero O. The synchronizing apparatus at the receiver is actuated only when the uni-directional current from the detected high-frequency signals is zero.
GB3935/34A1933-02-061934-02-06Improvements in or relating to television systems
ExpiredGB423765A
(en)