AU2938257A - Circuit arrangement for keeping the black level ofa television signal constant, independent ofthe chosen contrast, in television receivers withthe aid ofa switching diode
- Google Patents
Circuit arrangement for keeping the black level ofa television signal constant, independent ofthe chosen contrast, in television receivers withthe aid ofa switching diode
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.)
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Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
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Publication date
Application filed by Standard Telephone and Cables Pty LtdfiledCriticalStandard Telephone and Cables Pty Ltd
Application grantedgrantedCritical
Publication of AU2938257ApublicationCriticalpatent/AU2938257A/en
Publication of AU222858B2publicationCriticalpatent/AU222858B2/en
AU29382/57A1957-07-10Circuit arrangement for keeping the black level ofa television signal constant, independent ofthe chosen contrast, in television receivers withthe aid ofa switching diode
ExpiredAU222858B2
(en)
Circuit arrangement for keeping the black level ofa television signal constant, independent ofthe chosen contrast, in television receivers withthe aid ofa switching diode
Circuit arrangement for keeping the black level ofa television signal constant, independent ofthe chosen contrast, in television receivers withthe aid ofa switching diode