WO2006106860A1 - テレビジョンチューナ - Google Patents
テレビジョンチューナ Download PDFInfo
- Publication number
- WO2006106860A1 WO2006106860A1 PCT/JP2006/306723 JP2006306723W WO2006106860A1 WO 2006106860 A1 WO2006106860 A1 WO 2006106860A1 JP 2006306723 W JP2006306723 W JP 2006306723W WO 2006106860 A1 WO2006106860 A1 WO 2006106860A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- circuit
- resistor
- local oscillation
- signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
Definitions
- the present invention relates to downsizing and cost reduction of a television tuner that receives a television signal.
- VHF-Hi band (4-12 channels, Japan every 6MHz between 170MHz-222MHz, US every 174MHz-216MHz every 6MHz, Europe every 174MHz-230MHz every 7MHz)
- Frequency is assigned to each VHF-Lo band (1 to 3 channels, in Japan every 6 MHz between 90 MHz and 108 MHz, in the United States every 6 MHz between 54 MHz and 88 MHz, in Europe every 7 MHz between 47 MHz and 68 MHz) .
- FIG. 5 is a circuit block diagram showing an outline of a conventional television tuner
- FIG. 6 is a circuit diagram including a resonance circuit used in a television tuner product.
- the television tuner includes a band separation circuit (23) connected to an antenna (41) that receives broadcast radio waves having a plurality of frequency bands, and a band separation circuit (23).
- Band selection circuit (24X25) local oscillator that oscillates at a predetermined frequency according to each band (11X17), resonance circuit that determines the frequency of the local oscillator to select a predetermined channel (2a) (2b ), Phase control circuit (12) that controls the phase of the resonance circuit (2a) (2b), a mixer (26X27) that multiplies the signals from the tuning circuit (24X25) and the local oscillator (11X17), 26X27) has an intermediate frequency signal (48), a switching unit (18) for selecting a band, and an intermediate frequency amplifier (9) for amplifying the intermediate frequency signal (48).
- the broadband television signal input from the antenna (41) is divided into UHF band and VHF band, which are analog television signals, by a band separation circuit (23) composed of a filter.
- a band separation circuit (23) composed of a filter.
- the phase control circuit (12) receives a control signal (16) from the control circuit (15), and a signal (marked with *) as a band selection information and channel selection information is displayed in each circuit block. This is done by sending to
- This block diagram shows a single VHF band resonant circuit (2b).
- the VHF band is lower than the resonant circuit for the high band (channels 4 to 12). It is further divided into resonant circuits for bands (channels 1 to 3).
- most of the circuits composing the inside of the broken line in this block diagram are LSI (Ul), and a part corresponding to the resonant circuits (2a) and (2b) is externally attached to the LSI terminals.
- Figure 6 shows the configuration of a television tuner LSI and resonant circuit.
- the conventional example of FIG. 6 includes three resonant circuits corresponding to the UHF, VHF-Hi, and VHF-Lo frequency bands.
- 1 chipy for example, U1: product Texas Instruments Z product name TUNER—ICZ product number SN76164
- LSI has three frequency bands of resonance frequency input terminals for V HF-Hi (P30) (P31), VHF -Lo terminals (P32) (P1) and UHF terminals (P2) (P3) (P4) (P5) are provided.
- the two VHF-Hi terminals (P30XP31) are connected in series via a capacitor (C51), resistor (R51), and capacitor (C52), and one end of the resistor (R51) is connected to a capacitor (C61), An inductor (L51) and a variable capacitance diode (VC51) are connected in parallel.
- a capacitor (C62) and a resistor (R53) are connected in parallel to the force sword of the variable capacitance diode (VC51), and a tuning voltage (1) is applied from the other end of the resistor (R53).
- Various elements are connected to the two VHF-Lo terminals (P32XP1) in substantially the same manner as the VHF-Hi terminals (P30) (P31). That is, the two VHF-Lo terminals (P32XP1) are connected via a capacitor (C53XC54), and an inductor (L52), variable capacitance diode (VC52), and capacitor (C64) are connected between the two capacitors (C53XC54). Connected in parallel. In addition, a capacitor (C63) and resistor (R54) are connected in parallel to the force sword of the variable capacitance diode (VC52), and the resistor (R54) Tuning voltage (1) is applied from the other end.
- the UHF terminal is composed of four terminals (P2) (P3) (P4) (P5).
- the base and emitter of each of the two transistors (TR5XTR6) built into the LSI (Ul) correspond to the terminals (P2) (P3) and the terminal (P5XP4).
- a capacitor (C55XC56 XC57) is connected between each terminal (P2 to P5), and three capacitors (C58), (C59), and (C60) are connected between the two terminals (P2XP5).
- a variable capacitance diode (VC53) and a coil (L53) are connected in series with the capacitor (C59). The coil (L53) is connected to the tuning voltage (1) through the resistor (R1).
- a capacitor (C65) is connected in parallel with the variable capacitance diode (VC53), and the anode of the variable capacitance diode (VC53) is grounded via a resistor (R52). Next, the operation will be described.
- an LC parallel resonant circuit is mainly composed of capacitors (C61) (C62), a coil (L51), and a variable capacitance diode (VC51).
- the capacitance of the variable capacitance diode (VC51) changes and the two terminals (P30XP31) The generated resonant frequency changes within the VHF-Hi band.
- the capacitor (C51XC52) and resistor (R51) serve as the feedback capacitance of the LSI internal circuit.
- the resistor (R51) is for preventing abnormal oscillation.
- the operation in the VHF-Lo band is similar to that in the VHF-Hi band.
- the LC parallel resonant circuit is composed of capacitors (C63) (C64), coils (L52), and variable capacitance diodes (VC52).
- C63 capacitors
- L52 coils
- VC52 variable capacitance diodes
- the four terminals (P2, P3 and P5, P4) are the base and emitter terminals of the two transistors inside the LSI (Ul), respectively. Arise.
- the terminal (P3XP4) consists of a capacitor (C55 to C60, C65), a coil (L53), and a variable capacitance diode (VC53) to form an LC resonant circuit.
- the predetermined channel frequency in the UHF band is determined by the control voltage value of the tuning voltage (1) added to the variable capacitance diode (VC51).
- the transistor (TR5XTR6) that composes the local oscillator (11) is built in the IC. It is made.
- the resonant circuit is mainly composed of a closed loop circuit formed by a capacitor (C59), a coil (L53), and a variable capacitance diode (VC53). If the coil (L53) is fixed, the resonance frequency can be changed by controlling the variable capacitance diode (VC53) with the tuning voltage (1).
- the two capacitors (C55XC57) are the feedback capacitance between the base and the emitter of each of the two transistors (TR5XTR6), and the capacitor (C56) is the negative feedback capacitance between the emitters of the two transistors (TR5) (TR6).
- (C58) is the base coupling capacitance of transistor (TR5)
- capacitor (C60) is the base coupling capacitance of transistor (TR6).
- Patent Document 1 Japanese Unexamined Patent Publication No. 2000-32361
- Patent Document 2 Japanese Patent Laid-Open No. 2002-118795
- a tuning frequency signal (RF) that is an output from the tuning circuit and a local oscillation frequency signal (Fosc) are mixed in a mixer.
- the intermediate frequency signal in Japan is 57MHz.
- the resonator circuit (2a) (2b) force local oscillation signal (3a) (3b) of each band is output.
- a bandpass filter is configured in the channel selection circuit (24X25) so as to tune to the channel selection frequency.
- the same specification as the variable capacitance diode used in the resonance circuits (2a) and (2b) of the local oscillator (11X17) is selected, and the coil and capacitor are appropriately selected.
- an intermediate frequency (IF) with a constant difference (G in Fig. 10) between the local oscillation frequency signal (Fosc) and the tuning frequency signal (RF) can be output with respect to the tuning voltage (1).
- FIG. 8 shows the difference between the divided local frequency and the conventional local oscillation frequency.
- a is the UHF band
- b is the VHF-Hi band
- c is the tuning voltage local oscillation frequency characteristics in the VHF-Lo band
- Fig. 9 is an enlarged view of the VHF-Hi band and VHF-Lo band.
- the solid line parts in Fig. 8b and Fig. 8c are created by dividing the local oscillation signal by 1Z2 and 1Z4, respectively, and the dashed line and the alternate long and short dash line represent the conventional resonant circuit corresponding to each band.
- FIG. 6 is a special view when used.
- VHF-Hi band is low, control voltage side (A part of about 8V or less) and high, control voltage side (C part of about 18V or more), and high in VHF-Lo band.
- control voltage side On the control voltage side (B section of about 12V or more), there is a difference between the local oscillation frequency created by frequency division and the local oscillation frequency that is originally required. That is, IF ⁇ Fosc ⁇ RF.
- the present invention provides a resonance circuit by attaching a correction circuit having a capacitor and a switching force to the resonator so as to correspond to each band in order to support television signals of a plurality of bands with one resonance circuit.
- the tuning voltage is shared between the tuning circuit and the resonance circuit of the local oscillator, and the number of parts of the tuner circuit is also reduced.
- the television tuner of the present invention is a television tuner that divides a television broadcast signal into a plurality of frequency bands, receives the signal, and converts the signal into an intermediate frequency signal having a predetermined frequency.
- a resonant circuit (2) that controls the frequency of the local oscillation signal (8) that oscillates is provided.
- the tuning circuit (1) When receiving the first frequency band, the tuning circuit (1) is connected to the variable circuit element (VC1) in the resonant circuit (2). ) Is applied to control the frequency of the local oscillation signal (8), and when receiving the second frequency band, the tuning voltage (1) is applied to the variable circuit element (VC1) in the resonance circuit (2).
- the frequency of the local oscillation signal (8) is controlled by applying a correction control signal to the fixed circuit element connected to the variable circuit element.
- the resonant circuit (2) has a coil (L1) and a capacitor (C3) connected in series, and a variable capacitance diode (C3) connected in parallel to the coil (L1) and the capacitor (C3) connected in series.
- VC1 is connected, the tuning voltage (1) is applied to one end of the variable capacitance diode (VC1) via the resistor (R1), and a correction point is applied to the connection point between the variable capacitance diode (VC1) and the resistor (R1).
- a capacitor (C1XC2) is connected in parallel, the other end of the compensation capacitor (C1XC2) is grounded via the switch (TR1XTR2), and the switch (TR1XTR2) is applied by applying the first compensation control signal (6) (7).
- variable capacitance diode (VC1) is grounded via the resistor (R3), and the voltage dividing resistor (R4XR5) is connected to the connection point between the variable capacitance diode (VC1) and the resistor (R3).
- second correction control signals (4) and (5) are applied to the other end of the voltage dividing resistor (R4XR5).
- the resonant circuit (2) has a coil (L1) and a capacitor (C3) connected in series, and a variable capacitance diode in parallel with the coil (L1) and the capacitor (C3) connected in series.
- (VC 1) is connected, one end of the variable capacitance diode (VC1) is applied with the tuning voltage (1) via the resistor (R1), and the connection point between the variable capacitance diode (VC1) and the resistor (R1)
- the compensation resistor (R12XR13) is Connected in parallel, the other end of the compensation resistor is grounded via the switch (TR3XTR4), and the switch (TR3XTR4) is opened and closed by applying the first compensation signal (6) (7).
- the other end of the anode (VC1) is grounded via a resistor (R3), and a voltage dividing resistor (R4XR5) is connected to the connection point between the variable capacitance diode (VC1) and the resistor (R3).
- the second correction control signal (4) (5) is applied to the end.
- a frequency divider (10) that divides the local oscillation signal (8)
- a tuning circuit (24X25) that selects a tuning frequency, a local oscillation signal (8), or a divided local oscillation signal ( 33) and the channel selection frequency signal (46X47) output from the channel selection circuit (24X25), the mixer (26X27), and the intermediate frequency amplifier (26) that amplifies the intermediate frequency signal (48) from the mixer (26X27) ( 9)
- the local oscillation signal (8) is input to the mixer (26) when receiving the first frequency band, and the divided local oscillation is received when receiving the second frequency band.
- the signal (33) is input to the mixer (27), and the resonant circuit (2) of the local oscillation signal (8) is shared in multiple frequency bands.
- the present invention is a television tuner capable of receiving television signals of a plurality of bands, and is configured to support all the bands with one resonator by adding several capacitors, resistors, and switches to the resonator.
- external resonant circuit components other than the first frequency band of the tuner circuit can be eliminated, and the number of local oscillation components of the resonant circuit can be reduced by about half.
- the switch transistor can be built into the LSI, further reducing the number of parts.
- FIG. 1 shows an embodiment of the present invention, and its configuration and operation will be described.
- the television tuner of the present invention is provided with a resonance circuit (2) for controlling the local oscillation signal (8) in order to select a desired channel.
- the resonant circuit (2) consists of an LC resonant circuit consisting of a coil (Ll), a capacitor (C3), and a variable capacitance diode (VC1), and the tuning voltage (1) is applied via the resistor (R1). .
- the second correction control signal (4) (5) and the first correction control signal (6) (7) are connected to the LC resonance circuit (L1, VC1, C3).
- Input to (R4, R5) (C1, TR1, C2, TR2).
- the second correction control signal (4) (5) is variable
- the first correction control signal (6) (7) operates the capacitor (C1XC2) connected in parallel with the resonance circuit (2), and is applied so that the reverse potential of the quantum diode (VC1) is lowered. ) Is changed.
- the tuning voltage (1) is also used to control the resonant circuit in the tuning circuit (24X25).
- the frequency control of a in Fig. 8 must be performed using the conventional method of controlling the oscillation frequency of the LC resonant circuit (L1, VC1, C3) with the tuning voltage (1). I can do it.
- the local oscillation signal is frequency-divided and becomes the solid line of b in Fig. 8.
- Low voltage ⁇ The solid part of the A part (about 8V or less) must be lowered to the broken line.
- the second correction control voltage (4) is applied at, for example, 4.5 V, and the resistance voltage is divided so that the anode potential of the variable capacitance diode (VC1) becomes 0.5 V. Perform this correction.
- the potential difference in the variable capacitance diode (VC1) is relatively lowered, and the capacitance of the variable capacitance diode (VC1) is increased as shown in FIG. 7D.
- the change in the capacitance of the variable capacitance diode (VC1) is small, so that the second correction control signal is applied.
- the method cannot be expected to be effective. Therefore, the frequency can be lowered to the broken line in FIG. 9B by turning on the switch (TR 1) with the first correction control signal (6) and increasing the capacitance of the LC resonance circuit.
- the second correction control voltage (5) should be added if correction is required in the low frequency band.
- the switch (TR2) can be turned on, increasing the capacitance of the LC resonance circuit and lowering the resonance frequency.
- FIG. 1 Another embodiment is shown in FIG. In this embodiment, instead of the first correction capacitor (Cl) and the second correction capacitor (C2) in FIG. 1, the first correction resistor (R12) and the second correction resistor (R13) It is the Example using.
- the operation at the time of correction is the same as that of the embodiment of FIG. 1, but the tuning voltage can be divided during the operation of the switch (TR3XTR4) by providing an appropriate resistance ratio.
- the tuning voltage applied to the resonance circuit (2) can be substantially lowered with respect to the tuning voltage applied to the channel selection circuit (24X25), and the resonance frequency can be lowered.
- FIG. 3 is a block diagram of the present invention
- FIG. 4 is an embodiment of a mounting circuit using a tuner LSI.
- the schematic configuration of the tuner from the antenna (41) that receives broadcast radio waves to the transmission of the intermediate frequency signal (48) and the resonance circuit that constitutes the UHF local oscillator are the same as in the conventional example of FIG. Therefore, the explanation is omitted.
- the difference from the conventional example (Fig. 5) is that the local oscillation signal (8) output from the local oscillator (17) when receiving a frequency other than the first frequency band is set according to each band.
- the frequency is divided so as to correspond to a predetermined frequency.
- local oscillation signal for UHF band (8) is divided by frequency divider (10) (for example, 1Z2 times, 1Z4 times), and local oscillation signal for VHF-Hi band and VHF-Lo band (33) It is intended to be used as
- the resonance circuit (2) is provided with correction control means so as to correspond to a reception band other than the first frequency band, thereby changing the capacitance of the resonance circuit. Or the reverse voltage applied to the variable capacitance diode (VC1) is adjusted.
- the local oscillation signal (33) and correction control means are selected by a signal (16) from the control circuit (15) that receives the channel selection signal (16) and the phase control circuit (12) that selects each circuit (marked with *) It is decided based on.
- FIG. 4 shows an embodiment of the product circuit of the present invention, in which the resonant circuit (2) is connected to the LSI (Ul).
- the configuration of the resonance circuit (2) is composed of a capacitor (C59), a coil (L53), and a variable capacitance diode (VC53), and is the same configuration as that of the first embodiment (FIG. 1). Since the first correction control signal (6) (7) and the second correction control signal (4) (5) are operated with a DC voltage of 3V or less, the transistor (TR1XTR2), which is the correction control means, is connected to the LSI. Can be built in.
- the resonant frequency (8) is divided.
- the divided local oscillation frequency (solid line part) needs to be lowered to the actually required resonance frequency (broken line part, one-dot chain line part). Therefore, it is necessary to increase the capacitance value of the capacitor of the resonator or lower the tuning voltage to the LC resonator (L53, C59, VC53) compared to the tuning voltage applied to the tuning circuit.
- Figure 7 is a characteristic diagram of the tuning voltage and capacitance value of the variable capacitance diode.
- the variable capacitance diode In the variable capacitance diode, there is a sharp change in the capacitance value at low voltage. Therefore, in order to correct the low tuning frequency (approximately 8V or less) in the VHF-Hi band, the second correction control signal is applied as an offset potential to the anode side of the diode, and the reverse potential applied to the variable capacitance diode.
- the capacitance value can be increased by substantially reducing the value.
- the capacitance does not change much when the second correction control signal is changed. Therefore, the switch that opens and closes by the first correction control signal (TR 1XTR2 ) Is incorporated in the LSI, the capacitance of the capacitor (C66XC77) becomes the load of the resonance circuit when conducting, and the resonance frequency can be lowered.
- the frequency can be controlled by the resonant circuit of the variable capacitance diode (VC53), coil (L53), and capacitor (C59) with respect to the tuning voltage (1) as before. The means are not activated.
- the tuning voltage itself set by the phase control circuit (12) without adding a new expensive component to the local oscillator circuit is selected only by applying correction means to a part of the resonance circuit. Since it can be shared by station circuits, a low-cost tuner can be created. In addition, since the resonance circuit of the local oscillation circuit is shared by all bands, the number of components of the resonance circuit of the local oscillator required for each band can be greatly reduced.
- the number of parts in the conventional example (Fig. 6) is 15 for coils, resistors, diodes, etc., whereas the number of components in the present invention (Fig. 4) is only 5 for coils and resistors. It will be. Brief Description of Drawings
- FIG. 1 is an embodiment of the present invention.
- FIG. 2 is another embodiment of the present invention.
- FIG. 3 is an embodiment diagram of the present invention.
- FIG. 7 is a characteristic diagram of voltage-capacitance of a variable capacitance diode.
- FIG. 9 is a partially enlarged view of FIG.
- FIG. 10 is a diagram showing the difference between the local oscillation frequency and the tuning frequency indicating the intermediate frequency.
Landscapes
- Superheterodyne Receivers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/909,913 US20090079880A1 (en) | 2005-03-31 | 2006-03-30 | Television Tuner |
JP2007512884A JPWO2006106860A1 (ja) | 2005-03-31 | 2006-03-30 | テレビジョンチューナ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-101666 | 2005-03-31 | ||
JP2005101666 | 2005-03-31 |
Publications (1)
Publication Number | Publication Date |
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WO2006106860A1 true WO2006106860A1 (ja) | 2006-10-12 |
Family
ID=37073415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/306723 WO2006106860A1 (ja) | 2005-03-31 | 2006-03-30 | テレビジョンチューナ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090079880A1 (ja) |
JP (1) | JPWO2006106860A1 (ja) |
CN (1) | CN101103623A (ja) |
WO (1) | WO2006106860A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102917187A (zh) * | 2011-08-01 | 2013-02-06 | Lg伊诺特有限公司 | 广播接收装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3738168A1 (en) | 2018-01-11 | 2020-11-18 | AES Global Holdings, Pte. Ltd. | Low power pin diode driver |
CN109794405A (zh) * | 2019-02-18 | 2019-05-24 | 河南中医药大学 | 高强度聚焦超声信号校准电路 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6336618A (ja) * | 1986-07-31 | 1988-02-17 | Mitsumi Electric Co Ltd | 多バンドチユ−ナ |
JPH01265688A (ja) * | 1988-04-18 | 1989-10-23 | Hitachi Ltd | 受信装置 |
JPH11501471A (ja) * | 1995-01-23 | 1999-02-02 | アールシーエー トムソン ライセンシング コーポレイシヨン | 単一の局部発振器を有する広い周波数範囲のテレビジョン・チューナ |
JP2000032361A (ja) * | 1998-07-14 | 2000-01-28 | Sharp Corp | デジタル放送受信機 |
JP2002118795A (ja) * | 2000-10-05 | 2002-04-19 | Alps Electric Co Ltd | テレビジョン信号受信チューナー |
-
2006
- 2006-03-30 US US11/909,913 patent/US20090079880A1/en not_active Abandoned
- 2006-03-30 CN CNA200680001950XA patent/CN101103623A/zh active Pending
- 2006-03-30 WO PCT/JP2006/306723 patent/WO2006106860A1/ja active Application Filing
- 2006-03-30 JP JP2007512884A patent/JPWO2006106860A1/ja not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6336618A (ja) * | 1986-07-31 | 1988-02-17 | Mitsumi Electric Co Ltd | 多バンドチユ−ナ |
JPH01265688A (ja) * | 1988-04-18 | 1989-10-23 | Hitachi Ltd | 受信装置 |
JPH11501471A (ja) * | 1995-01-23 | 1999-02-02 | アールシーエー トムソン ライセンシング コーポレイシヨン | 単一の局部発振器を有する広い周波数範囲のテレビジョン・チューナ |
JP2000032361A (ja) * | 1998-07-14 | 2000-01-28 | Sharp Corp | デジタル放送受信機 |
JP2002118795A (ja) * | 2000-10-05 | 2002-04-19 | Alps Electric Co Ltd | テレビジョン信号受信チューナー |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102917187A (zh) * | 2011-08-01 | 2013-02-06 | Lg伊诺特有限公司 | 广播接收装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101103623A (zh) | 2008-01-09 |
JPWO2006106860A1 (ja) | 2008-09-11 |
US20090079880A1 (en) | 2009-03-26 |
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