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公开(公告)号：DE69626166T2
公开(公告)日：2003-11-27
申请号：DE69626166
申请日：1996-10-04
Applicant: SONY CORP
Inventor： IMAI TADASHI , KOBAYASHI KOZO
Abstract: NPN transistors are differentially connected to each other. The signal output from the collector of a first NPN transistor is positively fed back to the base of a second NPN transistor via a first capacitor, and the signal output from the collector of the second NPN transistor is positively fed back to the base of the first NPN transistor via a second capacitor. A one-port-type SAW resonator is connected to the collectors of the NPN transistors via the capacitors for blocking the flow of direct current. Thus, it becomes possible to generate a high-frequency signal with a high degree of accuracy.
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公开(公告)号：DE69429066D1
公开(公告)日：2001-12-20
申请号：DE69429066
申请日：1994-12-20
Applicant: SONY CORP
Inventor： ISHIKAWA NOBUYUKI , IMAI TADASHI
Abstract: An oscillator is provided with an oscillation circuit including two oscillation transistors (Q2,Q1), comprising a differential pair, and a resonance circuit (RSNa) connected in common to the bases of the oscillation transistors (Q2,Q1). The bases of the oscillation transistors (Q2,Q1) are short-circuited by a coil (L2), a center tap coil (L3) is connected in parallel to the resonance circuit (RSNa), and variable capacitance diodes (VC1,VC2) in the resonance circuit (RSNa) are driven by a coil (L4) connected to a mixing circuit (MIX). Due to this, it is possible to prevent the occurrence of low frequency noise, possible to realise a completely balanced operation, possible to avoid the oscillation carrier flowing into the power source and ground, and, when the oscillation circuit is used in a television tuner, possible to reduce the noise in a television picture.
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公开(公告)号：EP2456197A4
公开(公告)日：2013-07-17
申请号：EP10799776
申请日：2010-07-09
Applicant: SONY CORP
Inventor： YOSHIDA TOSHIKAZU , OZAWA HIDEAKI , IKEDA MITSURU , KURIHARA HIDETOSHI , YOSHIDA KOJI , SHIMANUKI MASARU , IMAI TADASHI
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公开(公告)号：BR112013024412A2
公开(公告)日：2016-12-20
申请号：BR112013024412
申请日：2012-03-23
Applicant: SONY CORP
Inventor： MASUMURA HITOSHI , KAWAKAMI SATORU , IMAI TADASHI , KAIDA TAKAYUKI
Abstract: aparelho e método de recepção [problema] o objetivo da presente invenção é manter boas características de recepção enquanto também reduzindo escala de circuito tão pequena quanto possível em um dispositivo receptor para receber uma pluralidade de ondas radiodifundidas de bandas de frequência diferentes. [solução] uma primeira unidade de processamento de alta frequência (320s, 320t) detecta uma primeira onda radiodifundida transmitida usando uma primeira banda de frequência a fim de extrair um primeiro sinal de alta frequência. além disso, uma segunda unidade de processamento de alta frequência (320t, 320s) detecta uma segunda onda radiodifundida transmitida usando uma segunda banda de frequência que é diferente da primeira banda de frequência a fim de extrair um segundo sinal de alta frequência. então, pelo menos um oscilador local (320) gera um sinal de oscilador local usado na primeira unidade de processamento de alta frequência e na segunda unidade de processamento de alta frequência.
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公开(公告)号：CA2307986C
公开(公告)日：2010-03-23
申请号：CA2307986
申请日：2000-05-10
Applicant: SONY CORP
Inventor： IMAI TADASHI , KOBAYASHI KOZO
Abstract: A receiving apparatus and method which can prevent second order harmonic interference and beat interference in a direct orthogonal detector is disclosed. When a control signal of the high level is inputted to a control terminal, then a first high frequency switch diode is turned on and a second high frequency switch diode is turned off. In this instance, a filter circuit functions as a low-pass filter. When a control signal of a low level is inputted to the control terminal, then the first high frequency switch diode is turned off and the second high frequency switch diode is turned on. In this instance, the filter circuit functions as a high-pass filter.
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Patent Agency Ranking
公开(公告)号：CA2307986A1
公开(公告)日：2000-11-11
申请号：CA2307986
申请日：2000-05-10
Applicant: SONY CORP
Inventor： IMAI TADASHI , KOBAYASHI KOZO
Abstract: A receiving apparatus and method which can prevent second order harmonic interference and beat interference in a direct orthogonal detector is disclosed. When a control signal of the high level is inputted to a control terminal, then a first high frequency switch diode is turned on and a second high frequency switch diode is turned off. In this instance, a filter circuit functions as a low-pass filter. When a control signal of a low level is inputted to the control terminal, then the first high frequency switch diode is turned off and the second high frequency switch diode is turned on. In this instance, the filter circuit functions as a high-pass filter.
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公开(公告)号：ES2261150T3
公开(公告)日：2006-11-16
申请号：ES00303801
申请日：2000-05-05
Applicant: SONY CORP
Inventor： IMAI TADASHI , KOBAYASHI KOZO
Abstract: Un aparato receptor para recibir y detectar ortogonalmente, de forma directa, una onda modulada digital, que comprende: medios de amplificación (2) destinados a amplificar la onda modulada digital suministrada como entrada a los mismos; medios de atenuación (41), destinados a atenuar, de la onda modulada digital amplificada por dichos medios de amplificación, una señal de una frecuencia igual a dos veces una cierta frecuencia de recepción designada, u otra señal de otra frecuencia igual a la mitad de la frecuencia de recepción; y medios de detección, destinados a detectar una señal de componente I y una señal de componente Q a partir de la onda modulada digital, atenuada por dichos medios de atenuación, y caracterizado por que: dichos medios de atenuación (41) funcionan alternativamente como un filtro de paso bajo o un filtro de paso alto, en respuesta a una señal de control suministrada como entrada a los mismos.
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公开(公告)号：DE69429066T2
公开(公告)日：2002-08-29
申请号：DE69429066
申请日：1994-12-20
Applicant: SONY CORP
Inventor： ISHIKAWA NOBUYUKI , IMAI TADASHI
Abstract: An oscillator is provided with an oscillation circuit including two oscillation transistors (Q2,Q1), comprising a differential pair, and a resonance circuit (RSNa) connected in common to the bases of the oscillation transistors (Q2,Q1). The bases of the oscillation transistors (Q2,Q1) are short-circuited by a coil (L2), a center tap coil (L3) is connected in parallel to the resonance circuit (RSNa), and variable capacitance diodes (VC1,VC2) in the resonance circuit (RSNa) are driven by a coil (L4) connected to a mixing circuit (MIX). Due to this, it is possible to prevent the occurrence of low frequency noise, possible to realise a completely balanced operation, possible to avoid the oscillation carrier flowing into the power source and ground, and, when the oscillation circuit is used in a television tuner, possible to reduce the noise in a television picture.
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公开(公告)号：SG48472A1
公开(公告)日：1998-04-17
申请号：SG1996010674
申请日：1996-09-25
Applicant: SONY CORP
Inventor： IMAI TADASHI , KOBAYASHI KOZO
Abstract: NPN transistors are differentially connected to each other. The signal output from the collector of a first NPN transistor is positively fed back to the base of a second NPN transistor via a first capacitor, and the signal output from the collector of the second NPN transistor is positively fed back to the base of the first NPN transistor via a second capacitor. A one-port-type SAW resonator is connected to the collectors of the NPN transistors via the capacitors for blocking the flow of direct current. Thus, it becomes possible to generate a high-frequency signal with a high degree of accuracy.
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公开(公告)号：BR112012015213A2
公开(公告)日：2016-04-05
申请号：BR112012015213
申请日：2010-12-21
Applicant: SONY CORP
Inventor： TOYODA TERUYUKI , IMAI TADASHI
Abstract: "módulo sintonizador,e,aparelho de recpção" os módulos sintonizador e recptor divulgados permitem flexibilidade e muitas variações no esboço de uma placa principal, melhorar flexibilidade de projeto, e resultados de custos inferiores. o módulo sintonizador tem uma placa de módulo de sintonizador (11) na qual uma de função de sintonizador é formada, uma placa principal (12) no qual a placa de módulo sintonizador (11) é montada em superfície, e um revestimento blindado (13) que tem pelo menos um conector de antena (14), é disposto a fim de cobrir a placa de módulo de sintonizador montado na superfície (11), e é preso a placa principal (12). o comprimento do mais lado do revestimento blindado (13) é menor do que ou igual à 1/4 do comprimento de onda da frequência mais alta recebida no ar.
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