MX9709741A - Sintonizador para receptor de satelite digital. - Google Patents
Sintonizador para receptor de satelite digital.Info
- Publication number
- MX9709741A MX9709741A MX9709741A MX9709741A MX9709741A MX 9709741 A MX9709741 A MX 9709741A MX 9709741 A MX9709741 A MX 9709741A MX 9709741 A MX9709741 A MX 9709741A MX 9709741 A MX9709741 A MX 9709741A
- Authority
- MX
- Mexico
- Prior art keywords
- tuner
- digital satellite
- local oscillator
- television receiver
- mhz
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
- H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Un sintonizador (9) para un receptor de television por satélite digital, comprende una sola etapa de conversion que produce una señal de frecuencia intermedia, a una frecuencia suficientemente baja para permitir que se utilice un filtro SAW (913) para realizar la configuracion del símbolo, así como la funcion de filtracion de frecuencia intermedia normal. El oscilador local (911) se controla mediante un circuito integrado de control de sintonizacion de ciclo de fase asegurada normalmente utilizado para controlar el oscilador local (911) de un sintonizador de un receptor de television de transmision o por cable convencional. En una modalidad de ejemplo para sintonizar las señales de radiofrecuencia proporcionadas por un convertidor de bloques (3) en el rango de frecuencia de 950 a 1,450 MHz, la frecuencia intermedia tiene una frecuencia central de 140 MHz.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/467,097 US5654774A (en) | 1995-06-06 | 1995-06-06 | Tuner for digital satellite receiver |
US08467097 | 1995-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
MX9709741A true MX9709741A (es) | 1998-07-31 |
MXPA97009741A MXPA97009741A (es) | 1998-11-09 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
JP2001518239A (ja) | 2001-10-09 |
KR19990022505A (ko) | 1999-03-25 |
US5654774A (en) | 1997-08-05 |
HK1015563A1 (en) | 1999-10-15 |
BR9608544A (pt) | 1999-07-06 |
AU5931396A (en) | 1996-12-24 |
WO1996039745A1 (en) | 1996-12-12 |
CN1190504A (zh) | 1998-08-12 |
CA2222575A1 (en) | 1996-12-12 |
MY115022A (en) | 2003-03-31 |
AU725103B2 (en) | 2000-10-05 |
CA2222575C (en) | 2000-02-22 |
TW328662B (en) | 1998-03-21 |
CN1097877C (zh) | 2003-01-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Grant or registration | ||
MM | Annulment or lapse due to non-payment of fees |