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| Number | Title | Issue Date |
| 4079418 | Power supply unit for data viewing devices The invention relates to a power supply unit for data viewing devices, which, from a main alternating voltage produces at least one d.c. voltage for the operation of the data viewing device, where the power supply unit is in the form of a switching power ... | 03/14/1978 |
| 4047226 | Television signal-seeking automatic tuning system An intercarrier television receiver is provided with a motor-driven signal seeker coupled to the tuner of the receiver and operative to continuously tune the receiver until stopped by a control signal. The control signal is generated by monitoring and com... | 09/06/1977 |
| 4041535 | Frequency synthesizer tuning system with signal seek control A television tuning system employs a frequency synthesizer system for establishing the tuning of the receiver. A first programmable frequency divider controlled by a reversible counter is connected between the output of a reference oscillator and a phase ... | 08/09/1977 |
| 3967057 | Automatic tuning apparatus An automatic tuning apparatus, such as an automatic channel selector as incorporated in a television receiver, comprising a tuner using a voltage controlled variable capacitance diode such that the variable capacitance thereof constitutes a portion of a t... | 06/29/1976 |
| 3949164 | Television signal detecting circuit A television signal detecting circuit is disclosed which has a first electric source, a second electric source (ground potential) different from the first electric source, a series circuit inserted between the first and second electric sources and consist... | 04/06/1976 |
