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公开(公告)号：FR2578122A1
公开(公告)日：1986-08-29
申请号：FR8602727
申请日：1986-02-27
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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公开(公告)号：CA1137171A
公开(公告)日：1982-12-07
申请号：CA355779
申请日：1980-07-09
Applicant: RCA CORP
Inventor： SAKARYA DURSUN , GEORGE JOHN B
Abstract: -12- RCA 74,141 In an infrared (IR) remote control transmitter, a main amplitude regulator is provided to regulate the amplitude of pulses applied to the transmitter's driver so as to maintain infrared radiation at a level consistent with proper operation but well below a safe limit for IR radiation under normal operating conditions. An auxiliary amplitude regulator is also provided to regulate the amplitude of pulses applied to the driver so as to maintain infrared radiation below the safe limit if the amplitude exceeds a predetermined threshold level due to a component failure of the main amplitude regulator. An average detector is also coupled to the auxiliary amplitude regulator so that the amplitude of the pulses applied to the driver is reduced should their width exceed beyond a desired value due to a component failure or misoperation of the transmitter.
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公开(公告)号：GB2171871B
公开(公告)日：1988-12-29
申请号：GB8604015
申请日：1986-02-18
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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Patent Agency Ranking
公开(公告)号：GB2171871A
公开(公告)日：1986-09-03
申请号：GB8604015
申请日：1986-02-18
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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公开(公告)号：CA1240791A
公开(公告)日：1988-08-16
申请号：CA501785
申请日：1986-02-13
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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公开(公告)号：FR2578122B1
公开(公告)日：1992-04-10
申请号：FR8602727
申请日：1986-02-27
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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公开(公告)号：DE3606660A1
公开(公告)日：1986-08-28
申请号：DE3606660
申请日：1986-02-28
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.
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公开(公告)号：CA1136712A
公开(公告)日：1982-11-30
申请号：CA348106
申请日：1980-03-21
Applicant: RCA CORP
Inventor： SAKARYA DURSUN
Abstract: -10- RCA 73, 815 An infrared remote control transmitter includes at least one infrared light-emitting diode poled with respect to a point of reference potential so as to be conductive in response to voltages having the opposite polarity of a DC supply voltage and to be nonconductive in response to voltages having the same polarity as the DC supply voltage. A push-pull amplifier is responsive to a pulse signal encoded to represent a remote control message to selectively couple the DC supply voltage or the reference potential to a capacitor coupled in series between the push-pull amplifier and the light-emitting diode. The capacitor is charged and discharged and an alternating drive voltage for the lightemitting diode having portions with polarities both the same as and opposite to the polarity of the DC supply voltage is generated. The push-pull amplifier is arranged so that when a component failure occurs, the portions of the alternating drive voltage having the polarity opposite to the polarity of the DC supply voltage are at least inhibited to prevent the continuous (i.e., DC) emission of infrared radiation.
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