CN1472899A - Feed loudspeaker for satellite broadcasting receive converter - Google Patents

Feed loudspeaker for satellite broadcasting receive converter Download PDF

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Publication number
CN1472899A
CN1472899A CNA031458262A CN03145826A CN1472899A CN 1472899 A CN1472899 A CN 1472899A CN A031458262 A CNA031458262 A CN A031458262A CN 03145826 A CN03145826 A CN 03145826A CN 1472899 A CN1472899 A CN 1472899A
Authority
CN
China
Prior art keywords
plate
feed horn
quadrangular barrel
satellite broadcasting
transducer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA031458262A
Other languages
Chinese (zh)
Other versions
CN1232055C (en
Inventor
松崎聪
司
斋藤修司
一郎
佐藤桂一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of CN1472899A publication Critical patent/CN1472899A/en
Application granted granted Critical
Publication of CN1232055C publication Critical patent/CN1232055C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0283—Apparatus or processes specially provided for manufacturing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Manufacturing & Machinery (AREA)
  • Waveguide Aerials (AREA)
  • Waveguides (AREA)

Abstract

Provided is a feed horn for a satellite broadcast reception where the workability of soldering is made satisfactory, the certain soldering is made available, and the deformation of a square cylindrical part is reduced. This feed horn for a converter for a satellite broadcasting reception is provided with a square cylindrical feed horn 6 whose metallic plate is folded, and third and fourth plate-shaped parts 9 and 10 of the feed horn 6 are provided with first and second band-shaped coupled parts 9b and 10b arranged to a direction where a square cylindrical part 11 is extended outside the square cylindrical part 11, and the first and second clad parts 9a and 10b are mutually coupled with a difference in level in a direction orthogonal to a direction where the square cylindrical part 11 is extended so that the wide coupled parts can be formed as the receiver of solder. Thus, it is possible to simplify the soldering work between the coupled parts, and to surely perform soldering.

Description

Satellite broadcasting receives the feed horn with transducer
Technical field
The satellite broadcasting that the present invention relates to a kind of receiving satellite broadcast receives the feed horn (feed horn) of using transducer (converter).
Background technology
The accompanying drawing of the feed horn of satellite broadcasting reception usefulness transducer in the past is described.Fig. 7 receives the end view of the outline of using transducer for expression satellite broadcasting in the past, Fig. 8 receives the stereogram of the feed horn of using transducer for expression satellite broadcasting in the past, Fig. 9 is the cutaway view along the 9-9 line of Fig. 8, and Figure 10 is the cutaway view along the 10-10 line of Fig. 8.
Then, receive the structure with the feed horn of transducer according to Fig. 7～Figure 10 explanation satellite broadcasting in the past, the framework 51 that crooked metal sheet forms constitutes open up and down square shape.
For the opening portion on one side of blocking framework 51, lid 52 hooks that formed by metallic plate are installed with on framework 51.
The circuit substrate 53 that is formed by printed base plate not only has almost at whole earthy pattern 54 that forms simultaneously, though and, carried various electric components on this Wiring pattern and formed desirable reception circuit in another side diagram but be provided with Wiring pattern not here.
And in order to block the another side opening portion of mouthful framework of word shape 51, such circuit substrate 53 is installed on the framework 51 with the state that electric component (circuit) is positioned at framework 51.
When circuit substrate 53 was installed on the framework 51, earthy pattern 54 exposed from framework 51, in the sealing framework 51, and its result, circuit is in by the state of framework 51, lid 52 and earthy pattern 54 electric screens.
Coaxial type connector 55 is connecting circuit to be installed on the framework 51 from the outwards outstanding state of framework 51 on this connector 55, takes out the signal of being crossed by processing of circuit from connector 55.
The quadrangular barrel shape feed horn 56 that crooked metal sheet forms is installed on the earthy pattern 54 with the state soldering perpendicular to circuit substrate 53, receives the satellite electric wave from this feed horn 56.
And particularly as Fig. 8～shown in Figure 10, feed horn 56 comprises: with crooked rectangular the 1st, the 2nd plate- like portion 57,58 of interconnected state; With crooked rectangular the 3rd plate-like portion 59 of state that is connected with the 1st plate-like portion 57; With crooked rectangular the 4th plate-like portion 60 of state that is connected with the 2nd plate-like portion 58.
And this feed horn 56 has the quadrangular barrel portion 61 that end with the 3rd, the 4th plate- like portion 59,60 is combined into mutual rectangular state, is made of the 1st, the 2nd, the 3rd, the 4th plate- like portion 57,58,59,60.
And, in the junction of the 3rd, the 4th plate- like portion 59,60, not only be provided with a plurality of tongue piece 59a that are projected into the outside, and be provided with the protuberance 60a that the end with the 3rd plate-like portion 59 connects in the end of the 4th plate-like portion 60 in the end of the 3rd plate-like portion 59.
And, from the 1st, the 2nd plate- like portion 57,58 crooked rectangular the 3rd, the 4th plate- like portions 59,60, protuberance 60a connects with the end of the state at right angle and the 3rd plate-like portion 59 between tongue piece 59a, under such state, as shown in figure 10, tongue piece 59a (representing with double dot dash line) is crooked in the direction of arrow A, make the outside of tongue piece 59a coincidence at the 4th plate-like portion 60.
Then, the periphery in the junction of the protuberance 60a of the 4th plate-like portion 60 and the 3rd plate-like portion 59 along the direction welding scolding tin 62 that quadrangular barrel portion 61 extends, is eliminated both slits, forms feed horn 56.
In the past satellite broadcasting receives the feed horn with transducer, because at the protuberance 60a of the 4th plate-like portion 60 and the small welding scolding tin 62 of the junction of the 3rd plate-like portion 59, so have inconvenient soldering operation, the problem of operation difference.
And, if carry out soldering, then cause scolding tin to drip to the 4th plate-like portion 60 sides in narrow and small like this part, the soldering tin amount of junction tails off, and not only has the bad problem of soldering, but also has the problem of degraded appearance.
And, during along arrow A direction bending tongue piece 59a, exist the 4th plate-like portion 60 by direction extruding to arrow B, quadrangular barrel portion 61 becomes the problem of rhombus.
Summary of the invention
Therefore, purpose of the present invention will provide a kind of soldering transaction capabilities good exactly, and the little satellite broadcasting of distortion that not only can positively carry out soldering and quadrangular barrel portion receives the feed horn of using transducer.
As the 1st solution that is used to address the above problem, satellite broadcasting of the present invention receives the feed horn that possesses the quadrangular barrel shape of crooked metal sheet formation with the feed horn of transducer, and this feed horn not only has with crooked rectangular the 1st, the 2nd plate-like portion of interconnected state; With crooked rectangular the 3rd plate-like portion of state that is connected with described the 1st plate-like portion; With crooked rectangular the 4th plate-like portion of state that is connected with described the 2nd plate-like portion.And described feed horn possesses: because described the 3rd, the 4th plate-like portion is combined into mutual rectangular state, thus the quadrangular barrel portion that constitutes by described the 1st, the 2nd, the 3rd, the 4th plate-like portion.Described the 3rd plate-like portion has in the outside of described quadrangular barrel portion the 1st coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and, described the 4th plate-like portion has in the outside of described quadrangular barrel portion the 2nd coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and described the 1st, the 2nd coincidence part constitutes on the direction vertical with the bearing of trend of described quadrangular barrel portion and interosculates with having drop.
And as the 2nd kind of solution, the side in described the 1st, the 2nd coincidence part extends to form along same plane from described flat part, and simultaneously the side that constitutes in addition of described the 1st, the 2nd coincidence part bends to the right angle and forms from described flat part.
And, as the 3rd kind of solution, on a side of described the 3rd, the 4th flat part, be provided with the protuberance that extends along same plane from described flat part, on the opposing party of described the 3rd, the 4th flat part, be provided with simultaneously the hole that embeds described protuberance, described protuberance is embedded in this hole, and described the 3rd, the 4th plate-like portion constitutes the mutual rectangular state that is combined into.
And,, rivet the leading section of described protuberance along the bearing of trend of described quadrangular barrel portion as the 4th kind of solution.
And, as the 5th kind of solution, being provided with on the described flat part from the outstanding tongue piece of the periphery in described hole, this tongue piece is crooked to be overlapped on the outside of the described flat part with described protuberance.
Description of drawings
Fig. 1 represents that satellite broadcasting of the present invention receives the end view with the outline of transducer.
Fig. 2 represents to receive with satellite broadcasting of the present invention the relevant stereogram of the 1st embodiment of the feed horn of using transducer.
The cutaway view of Fig. 3 Fig. 2 along the 3-3 line.
The cutaway view of Fig. 4 Fig. 2 along the 4-4 line.
Fig. 5 and the 2nd embodiment cutaway view relevant, feed horn joint portion of satellite broadcasting reception of the present invention with the feed horn of transducer.
Fig. 6 and the 3rd embodiment cutaway view relevant, feed horn protuberance of satellite broadcasting reception of the present invention with the feed horn of transducer.
Fig. 7 represents the end view of the outline of satellite broadcasting reception usefulness transducer in the past.
Fig. 8 represents the stereogram of the feed horn of satellite broadcasting reception usefulness transducer in the past.
The cutaway view of Fig. 9 Fig. 8 along the 9-9 line.
The cutaway view of Figure 10 Fig. 8 along the 10-10 line.
Embodiment
Illustrate that satellite broadcasting of the present invention receives the accompanying drawing with the feed horn of transducer.Fig. 1 receives the end view of the outline of using transducer for expression satellite broadcasting of the present invention, Fig. 2 receives the 1st embodiment stereogram of the feed horn of using transducer for expression and satellite broadcasting of the present invention, Fig. 3 is the cutaway view along the 3-3 line of Fig. 2, and Fig. 4 is the cutaway view along the 4-4 line of Fig. 2.
And, Fig. 5 is that satellite broadcasting of the present invention receives the cutaway view with the joint portion the 2nd embodiment, feed horn of the feed horn of transducer, and Fig. 6 be and satellite broadcasting of the present invention receives the cutaway view of protuberance the 3rd embodiment, feed horn of the feed horn of usefulness transducer.
Illustrate that according to Fig. 1～Fig. 4 satellite broadcasting of the present invention receives the structure of the 1st embodiment of the feed horn of using transducer.The framework 1 that crooked metal sheet forms constitutes open up and down square shape.
For the opening portion of an end of blocking framework 1, lid 2 hooks that formed by metallic plate are installed with on framework 1.
The circuit substrate 3 that is formed by printed base plate not only has almost at whole earthy pattern 4 that forms simultaneously, though and, carry various electric components on this Wiring pattern and form desirable reception circuit in another side diagram but be provided with Wiring pattern not here.
And in order to block the other end opening portion of mouthful framework of word shape 1, such circuit substrate 3 is installed on the framework 1 with the state that electric component (circuit) is positioned at framework 1.
When circuit substrate 3 was installed on the framework 1, earthy pattern 4 exposed from framework 1, in the sealing framework 1, and its result, circuit is in by the state of framework 1, lid 2 and earthy pattern 4 electric screens.
Coaxial type connector 5 is connecting circuit to be installed on the framework 1 from the outwards outstanding state of framework 1 on this connector 5, thereby can take out the signal of being crossed by processing of circuit from connector 5.
The quadrangular barrel shape feed horn 6 that crooked metal sheet forms is installed on the earthy pattern plane 4 with the state soldering perpendicular to circuit substrate 3, thereby can receive the satellite electric wave from this feed horn 6.
And particularly as Fig. 2～shown in Figure 4, feed horn 6 has with crooked rectangular the 1st, the 2nd plate- like portion 7,8 of interconnected state; With crooked rectangular the 3rd plate-like portion 9 of state that is connected with the 1st plate-like portion 7; With crooked rectangular the 4th plate-like portion 10 of state that is connected with the 2nd plate-like portion 8.
And this feed horn 6 is combined into mutual rectangular state with the end of the 3rd, the 4th plate- like portion 9,10, has the quadrangular barrel portion 11 that is made of the 1st, the 2nd, the 3rd, the 4th plate- like portion 7,8,9,10.
And in the junction of the 3rd, the 4th plate- like portion 9,10, the 3rd plate-like portion 9 has devices spaced apart and is arranged near the pair of holes 9a in end; The 1st coincidence part 9b of band shape along the extension of same plane between the 9a of this hole, from plate-like portion 9; From the outstanding tongue piece 9c of the periphery of hole 9a.
And the bearing of trend along quadrangular barrel portion 11 extends to form the 1st coincidence part 9b in the outside of quadrangular barrel portion 11.
And in the junction of the 3rd, the 4th plate- like portion 9,10, the 4th plate-like portion 10 has from flat part 10 outstanding to same plane, and embed in the above-mentioned hole 9a protuberance 10a and from the 2nd coincidence part 10b of the crooked rectangular band shape of an end of flat part 10.
And, the 2nd coincidence part 10b is in the outside of quadrangular barrel portion 11, bearing of trend along quadrangular barrel portion 11 extends to form, and the width of the 2nd coincidence part 10b (length of the direction vertical with the bearing of trend of quadrangular barrel portion 11) forms wideer than the width of the 1st coincidence part 9b.
And, be combined into mutual rectangular state from the 1st, the 2nd plate- like portion 7,8 crooked rectangular the 3rd, the 4th plate- like portions 9,10, among the protuberance 10a embedded hole 9a, rivet the leading section of protuberance 10a along the bearing of trend of quadrangular barrel portion 11.
And, the 3rd, the 4th plate- like portion 9,10 in conjunction with the time, the 1st, the 2nd coincidence part 9b, 10b become the state that has drop and interosculate on the direction vertical with the bearing of trend of quadrangular barrel portion 11.
That is, as shown in Figure 3, the 2nd coincidence part 10b is longer and give prominence to than the 1st coincidence part 9b, and the 1st coincidence part 9b is positioned at the position than the more close quadrangular barrel in the outer end of the 2nd coincidence part 10b portion 11.
And as shown in Figure 4, crooked in the direction of arrow A tongue piece 9c (representing with double dot dash line) under such state makes tongue piece 9c overlap the outside of the 4th plate dress portion 10.
At this moment, though the 4th plate-like portion 10 is pushed in the direction of arrow B, because protuberance 10a is embedded among the 9a of hole, therefore the 4th plate-like portion 10 becomes seldom to the distortion of the direction of arrow B, not distortion of quadrangular barrel portion 11.
Then, partly weld scolding tin 12 at the drop of the 1st, the 2nd coincidence part 9b, 10b, eliminate both gaps, form feed horn 6 along the bearing of trend of quadrangular barrel portion 11.
At this moment, the 2nd coincidence part 10b of wide cut becomes the weld part of scolding tin 12, and soldering between the two is easy, not only can positively weld, and can obtain the member that scolding tin does not drip.
In addition, though the 1st coincidence part 9b has been described in the above-described embodiments to be extended along same plane from plate-like portion 9, and the 2nd coincidence part 10b is from flat part 10 crooked rectangular structures, bends to the structure that right angle and the 2nd coincidence part 10b extend along same plane from flat part 10 but also can be the 1st coincidence part 9b from plate-like portion 9.
And, though the protuberance 10a of the 4th plate dress portion 10 is embedded among the hole 9a of the 3rd plate-like portion 9, also can in the 4th plate dress portion 10, the hole be set, the protuberance that is arranged on the 3rd plate-like portion 9 is embedded in this hole.
Fig. 5 represents that satellite broadcasting of the present invention receives the 2nd embodiment with the feed horn of transducer, the 2nd embodiment makes the width of the 1st coincidence part 9b that is arranged on the band shape on the 3rd plate-like portion 9 wideer than the width that is arranged on the 2nd coincidence part 10b in the 4th plate dress portion 10, partly carries out soldering 12 welding at both drop.
Other structure is identical with above-mentioned the 1st embodiment, and the same numbering of mark is omitted its explanation here on same parts.
Fig. 6 represents that satellite broadcasting of the present invention receives the 3rd embodiment with the feed horn of transducer, and the 3rd embodiment is the not crooked tongue piece 9c that is arranged on the 3rd plate-like portion 9, makes the be in line structure of shape of its prolongation.
Other structure is identical with above-mentioned the 1st embodiment, and same parts mark same numbering, omit its explanation here.
Satellite broadcasting of the present invention receives the feed horn that possesses the quadrangular barrel shape of crooked metal sheet formation with the feed horn of transducer, and this feed horn has: with crooked rectangular the 1st, the 2nd plate-like portion of interconnected state; With crooked rectangular the 3rd plate-like portion of state that is connected with described the 1st plate-like portion; With crooked rectangular the 4th plate-like portion of state that is connected with described the 2nd plate-like portion.And described feed horn is combined into mutual rectangular state with described the 3rd, the 4th plate-like portion, has the quadrangular barrel portion that is made of described the 1st, the 2nd, the 3rd, the 4th plate-like portion.Described the 3rd plate-like portion has in the outside of described quadrangular barrel portion the 1st coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and, described the 4th plate-like portion has in the outside of described quadrangular barrel portion the 2nd coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and described the 1st, the 2nd coincidence part constitutes on the direction vertical with the bearing of trend of described quadrangular barrel portion and interosculates with having drop.
By such structure, when the drop part soldering of the 1st, the 2nd coincidence part, wide joint portion becomes weld part, and soldering operation between the two is easy, not only can positively weld, and can access the member that scolding tin does not drip.
And, because the side in the 1st, the 2nd coincidence part extends to form along same plane from flat part, an other side of while the 1st, the 2nd coincidence part bends to the right angle and forms from flat part, therefore, not only the processing of the 1st, the 2nd coincidence part becomes easily, and both can positively overlap.
And, owing on a side of the 3rd, the 4th flat part, be provided with the protuberance that extends along same plane from flat part, on the opposing party of the 3rd, the 4th flat part, be provided with simultaneously the hole that embeds protuberance, protuberance is embedded in this hole, 3rd, the 4th plate-like portion is combined into mutual rectangular state, therefore, can access the few member of butt state distortion firm, quadrangular barrel portion of the junction of the 3rd, the 4th flat part.
And owing to the leading section of riveting protuberance along the bearing of trend of quadrangular barrel portion, so the distortion of quadrangular barrel portion is little, can make the combination of the 3rd, the 4th flat part junction firm.
And owing to be provided with on flat part from the outstanding tongue piece of the periphery in hole, this tongue piece is crooked to be overlapped on the outside of the flat part with protuberance, so the distortion of quadrangular barrel portion is little, the combination that can strengthen the 3rd, the 4th flat part junction.

Claims (5)

1. a satellite broadcasting receives the feed horn of using transducer, it is characterized in that it possesses the feed horn of the quadrangular barrel shape that metallic plate is bent to form, and this feed horn has: with crooked rectangular the 1st, the 2nd plate-like portion of interconnected state; With crooked rectangular the 3rd plate-like portion of state that is connected with described the 1st plate-like portion; With crooked rectangular the 4th plate-like portion of state that is connected with described the 2nd plate-like portion;
Simultaneously, described feed horn has: the quadrangular barrel portion that described the 3rd, the 4th plate-like portion is combined into mutual rectangular state, is made of described the 1st, the 2nd, the 3rd, the 4th plate-like portion;
Described the 3rd plate-like portion has in the outside of described quadrangular barrel portion the 1st coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and described the 4th plate-like portion has in the outside of described quadrangular barrel portion the 2nd coincidence part of the band shape that is provided with along the bearing of trend of described quadrangular barrel portion, and described the 1st, the 2nd coincidence part interosculates on the direction vertical with the bearing of trend of described quadrangular barrel portion with having drop.
2. satellite broadcasting as claimed in claim 1 receives the feed horn with transducer, it is characterized in that, side in described the 1st, the 2nd coincidence part extends to form along same plane from described flat part, and simultaneously an other side of described the 1st, the 2nd coincidence part bends to the right angle and forms from described flat part.
3. satellite broadcasting as claimed in claim 1 or 2 receives the feed horn with transducer, it is characterized in that, on a side of described the 3rd, the 4th flat part, be provided with the protuberance that extends along same plane from described flat part, on the opposing party of described the 3rd, the 4th flat part, be provided with simultaneously the hole that embeds described protuberance, described protuberance is embedded in this hole, and described the 3rd, the 4th plate-like portion is combined into mutual rectangular state.
4. satellite broadcasting as claimed in claim 3 receives the feed horn with transducer, it is characterized in that, rivets the leading section of described protuberance along the bearing of trend of described quadrangular barrel portion.
5. receive the feed horn of using transducer as claim 3 or 4 described satellite broadcastings, it is characterized in that, be provided with on the described flat part from the outstanding tongue piece of the periphery in described hole, this tongue piece is crooked to be overlapped on the outside of the described flat part with described protuberance.
CN 03145826 2002-07-12 2003-07-11 Feed loudspeaker for satellite broadcasting receive converter Expired - Fee Related CN1232055C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002203664A JP2004048419A (en) 2002-07-12 2002-07-12 Feed horn for converter for satellite broadcast reception
JP2002203664 2002-07-12

Publications (2)

Publication Number Publication Date
CN1472899A true CN1472899A (en) 2004-02-04
CN1232055C CN1232055C (en) 2005-12-14

Family

ID=29728527

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03145826 Expired - Fee Related CN1232055C (en) 2002-07-12 2003-07-11 Feed loudspeaker for satellite broadcasting receive converter

Country Status (3)

Country Link
EP (1) EP1381110A1 (en)
JP (1) JP2004048419A (en)
CN (1) CN1232055C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974199A1 (en) 2011-04-15 2012-10-19 Nief Plastic METHOD FOR MANUFACTURING A CAPACITIVE TOUCH SENSOR

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996790A (en) * 1956-08-23 1961-08-22 Gen Electric Co Ltd Methods of manufacturing hollow articles
DE1160048B (en) * 1962-06-16 1963-12-27 Felten & Guilleaume Carlswerk Rectangular waveguide and process for its manufacture
GB1241413A (en) * 1967-07-18 1971-08-04 Atomic Power Constr Ltd Improvements in and relating to ducting
US4058813A (en) * 1976-03-18 1977-11-15 Rca Corporation Sheet metal waveguide horn antenna
JPS63132488A (en) * 1986-11-21 1988-06-04 Tokyo Keiso Kk Manufacture of thermocouple pile
EP1168486A1 (en) * 2000-04-20 2002-01-02 Alps Electric Co., Ltd. Converter for satellite broadcast reception

Also Published As

Publication number Publication date
JP2004048419A (en) 2004-02-12
CN1232055C (en) 2005-12-14
EP1381110A1 (en) 2004-01-14

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