CN1004178B - Double cassette tape recorder - Google Patents

Double cassette tape recorder Download PDF

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Publication number
CN1004178B
CN1004178B CN85107240.2A CN85107240A CN1004178B CN 1004178 B CN1004178 B CN 1004178B CN 85107240 A CN85107240 A CN 85107240A CN 1004178 B CN1004178 B CN 1004178B
Authority
CN
China
Prior art keywords
tape
controller
switch
playback
cassette
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.)
Expired
Application number
CN85107240.2A
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Chinese (zh)
Other versions
CN85107240A (en
Inventor
乡矢浩之
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.)
Sanyo Electric Co Ltd
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Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN85107240A publication Critical patent/CN85107240A/en
Publication of CN1004178B publication Critical patent/CN1004178B/en
Expired legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/16—Control of operating function, e.g. switching from recording to reproducing by sensing presence, absence or position of record carrier or container
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers

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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

A dual cassette tape recorder is provided with first and second cassette holders and a common playback and recording amplifier. When a cassette is loaded into only the first cassette; the recording and playing head of the cassette can be automatically in recording or playing state. When a cassette is loaded into only the second cassette; the recording and playing head on the cassette can be automatically in recording or playing state. Further, when the cartridges are loaded into the two cartridges, respectively; the cassette tape playback signals on the first cassette can be recorded on the cassette tape of the second cassette; i.e. may be automatically in a copy state.

Description

Double-cassette tape recorder
The present invention relates to a kind of two card (or two boxlike) blattnerphone.This sound-track engraving apparatus is equipped with the first and second two decks or cassette holder and shared playback and recording amplifiers.
Usually this class double-cassette tape recorder is made up of two decks: as shown in Figure 6, first deck is equipped with playback head 1 and aims at the playback amplifier 2 that playback is used, second deck is equipped with 3, one playback amplifiers 4 of a playback head and a recording amplifier 5 that aims at recording usefulness.
In aforesaid common line, be that playback switch 6,7 is connected on playback position P in tone playing state.As the D of newel post that deck selector switch 8 is pulled on first deck 1, so, amplified by playback amplifier 2, and be sent to output terminal 9 and reset by loudspeaker (not drawing among the figure) from the signal of the playback head 1 of first cassette holder.When this cassette holder switch is pulled the D of newel post on second cassette holder 2The time, amplify by playback amplifier 4 and deliver to output terminal 9 from the signal of the second cassette holder playback head 3.
Equally, be that playback switch 6,7 places recording position R at recording state, pulled the D of newel post on first cassette holder when cassette holder selector switch 8 so 1The time, amplify by playback amplifier 2 from the signal of the playback head 1 of first cassette holder, and output to output terminal 9, simultaneously, by recording amplifier 5, by the playback head record of second cassette holder on tape.Just, these signals have been replicated.Equally, pull the D of newel post on second deck when this cassette holder selector switch 8 2The time, from the external input signal of input end 10, amplify, and, recorded on tape by the playback head 3 of second cassette holder by recording amplifier 5 by prime amplifier 11.
Common copying magnetic tapes sound-track engraving apparatus recited above requires to be furnished with playback amplifier 2,4 respectively at first cassette holder and second cassette holder.And, also need a recording amplifier and a playback switch for to increase sound-recording function here at first cassette holder.
For addressing the above problem, on Japanese Patent Publication (Tokkaisho) No50-99302, proposed a kind of circuit and arranged, be i.e. the shared playback amplifier of first cassette holder of a dual-cassette tape recorder and second cassette holder and a recording amplifier.
In common line shown in Figure 6 and the circuit that is proposed among Japanese Patent Publication (Tokkaisho) No5099302 arrange, cut off and the connection signal loop by the playback switch that is connected in the signal circuit.Therefore, such PCB design is got up very complicated.In addition, the recording playback State Selection of first cassette holder playback (recording) State Selection or second cassette holder and replication status must be determined by the action of user's master cock, rather than determined by the tape of having packed in first cassette holder and/or second cassette holder.Therefore the switching manipulation action also is complicated.
The basic purpose of the present invention provides a kind of two cassette recorders with following three kinds of functions;
One, when putting into first cassette holder, tape can make this tape be in recording or tone playing state automatically.
Two, when putting into second cassette holder, tape cassete can make this tape be in recording or tone playing state automatically;
Three, when tape is put into first cassette holder and second cassette holder respectively, can make first cassette holder be in tone playing state automatically, and second cassette holder is in the replication status of recording state.
For realizing this purpose, according to the invention provides an equipment first and second tape drums, the dual-cassette tape recorder of common playback and recording amplifier and one group of switch element, it comprises a pick-up unit, one switching controller and an input control device, pick-up unit comprises that being used to detect pack into first detector switch and being used to of tape situation of first tape drum detects pack into second detector switch of tape situation of second tape drum, switching controller comprises first and second on-off controllers, the output of their response detection devices, the appropriate section and the playback head of first and second tape drums and being connected of playback and record amplifier of difference control switch unit group, input control device is used to detect the playback head that whether has the external input signal that need be input to recording amplifier and control one of this signal to two tape drum, this device comprises that an input controller and that detects the input end input signal is used for control switch unit group appropriate section with the 3rd on-off controller on the tape drum playback head that input signal is added to tape, the same section of the second and the 3rd on-off controller control switch unit group, and the control of second switch controller has precedence over the control of the 3rd on-off controller when two tape drums are all packed tape into.
These and other objects of the present invention and characteristics will by below in conjunction with accompanying drawing to easily seeing in the explanation of optimum implementation, with regard to accompanying drawing:
Fig. 1 is a wiring diagram to Fig. 5, and each figure represents the different operating state of dual-cassette tape recorder of the present invention, and Fig. 6 is the wiring diagram of common double cassette tape recorder.
Before carrying out explanation of the present invention, point out that at first parts identical in whole accompanying drawings all are to be represented by identical label.To narrate the wiring diagram of dual-cassette tape recorder of the present invention then.
Label 12 is playback heads of first cassette holder, for for simplicity, is called first playback head down.Label 13 is playback heads of second cassette holder, is called second playback head down.
Label 14 is playback amplifiers, and its input end links to each other with an end of first playback head 12, and its output terminal links to each other with output newel post 15.Label 16 is recording amplifiers, and its output terminal links to each other with second playback head 13, and its input end is connected with input newel post 18 through prime amplifier 17.The other end that characteristics of line construction of the present invention are first playback heads 12 links to each other with the other end of second playback head 13, or says that the output terminal of playback amplifier 14 links to each other with the input end of recording amplifier 16, thereby forms a closed loop.
Label 19 is detecting devices of using for the tape installation situation that detects same first and second cassette holders of two tape cassetes, and it comprises: 1, first cassette detecting switch 20, and when tape has been packed first cassette holder into, this detector switch closure (connection); 2, second cassette detecting switch 21, when tape has been packed second cassette holder into, this detector switch closure (connection); With 3, two resistance 22 and 23 of same resistance.One end ground connection of first cassette detecting switch 20, the other end links to each other with resistance 22, and is same, and an end of second cassette detecting switch 21 is added with a control voltage+B, and the other end links to each other with resistance 23.Therefore, can export the control voltage of a varying level from the binding mid point A of resistance 22 and 23.
That is to say, when having only first cassette detecting switch, 20 closures, from the control voltage of detecting device 19 outputs are low level voltages, when having only second cassette detecting switch, 21 closures, detecting device 19 is the control voltage of high level, when first and second cassette detecting switches 20 and 21 are closed simultaneously, adopt the control voltage of medium level.
Label 24 and 25 is first and second on-off controllers, and they can make corresponding reaction to the control voltage of three kinds of varying levels of detecting device 19 output.First on-off controller, 24 controls, first switch element 26, second switch controller 25 control second switch unit 27.
First switch element has three switch newel post I, II, III, and also there are three switch newel post I, II, III in the second switch unit.The mid point of line links to each other between the common terminal C of first switch element 26 and first playback head 12 and second playback head 13.Equally, the common terminal C ground connection of second switch unit 27.And, link to each other between separately the first switch newel post I of switch element 26 and 27, the I, link to each other between second switch newel post II, the II and the 3rd switch newel post III, III between link to each other.
The first switch newel post I, I link to each other with line mid point between second playback head 13 and the recording amplifier 16.Equally, the mid point of line links to each other between second switch newel post II, II and first playback head 12 and the playback amplifier 14.
Yet, when the control voltage of detecting device 19 outputs is low level voltage, first on-off controller 24 is received the first switch newel post I to first switch element 26, when control voltage is high level voltage, first switch element 26 is received second switch newel post II, when control voltage is the voltage of medium level, first switch element 26 is received the 3rd switch newel post III.Equally, when control voltage was the voltage of medium level, second switch controller 25 was received the 3rd switch newel post III to second switch unit 27.
Label 28 is input controllers, and it detects the outer input signal from input end 18, and when not having input signal, it exports a low level voltage, and when input signal, it exports a high level signal.Consider when input signal cuts off, to be transformed into low level change action that the input controller has certain time constant from high level.Label 29 is on-off controllers, and its control second switch unit 27 is to react to the output level of input controller 28.When control voltage was low level voltage, on-off controller 29 was received the first switch newel post I to second switch unit 27, when control voltage is high level voltage, it was received second switch newel post II.Second switch unit 27 has precedence over by the low level of the 3rd on-off controller 29 and the translation function of high level input action by the translation function of the medium level input action of second switch controller 25.
More than narration is line construction of the present invention, will narrate ruuning situation below.
1. the tape tone playing state of first cassette holder of only packing into
At this moment, because detecting device 19 outputs is low level voltage, first on-off controller 24 is received the first switch terminals I to first switch element 26.Equally, when not having extraneous signal to be added to input end 18, because 28 outputs of input controller is low level voltage, the 3rd on-off controller 29 is received the first switch newel post I (see figure 1) to second switch unit 27.
Correspondingly, the output head grounding of the other end of first playback head 12 and recording amplifier 16.Two terminal shortcircuits of second playback head 13.
Thereby, if tape row relays sound under this condition, so, amplified by playback amplifier 14, and output to output terminal 15 and by speaker playback from the signal of first playback head 12.Even the part of playback signal is input to recording amplifier 16, because the output head grounding of recording amplifier can't be added to second playback head.
2. pack into the recording state of tape of first cassette holder only
At this moment, because detecting device 19 is low level output, first on-off controller 24 is received the first switch newel post I to first switch element 26.When external input signal was added to input end 18, because 28 outputs of input controller is high level voltage, the 3rd on-off controller 29 was received second switch newel post II (see figure 2) to second switch unit 27.
Correspondingly, the other end of first playback head 12 links to each other with the output terminal of recording amplifier 16, and the input end grounding of an end of this magnetic head and playback amplifier 14.Two terminal shortcircuits of second playback head 13.
When tape moves with record type under such condition, amplified by prime amplifier 17 from the external input signal of input end 18, be sent to output terminal 15 in order to monitor this amplified signal then, simultaneously, deliver to first playback head 12 through recording amplifier 16, so signal is recorded on the tape of first cassette holder.
3, the tape tone playing state of second cassette holder of packing into.
At this moment, because detecting device 19 output high level voltages, first on-off controller 24 is received second switch newel post II to first switch element 26.When not having external input signal to be added to input end 18, because 28 outputs of input controller is low level voltage, the 3rd on-off controller 29 is received the first switch newel post I (see figure 3) to second switch unit 27.
Correspondingly, the other end of second playback head 13 is received the input end of playback amplifier 14 by first switch element 26.One end of magnetic head and the output terminal of recording amplifier 16 are through second switch unit 27 ground connection.First playback head, 12 two ends are through 26 short circuits of first switch element.
Thereby, when tape moves with playback modes under this condition, amplified by playback amplifier 14 from the signal of second playback head 13, and can pass through speaker playback from output terminal 15 outputs.
4, the tape recording state of second cassette holder of only packing into
At this moment, as described above, first switch element 27 is received second switch newel post II.Or when external input signal was added to input end 18, because 28 outputs of input controller is high level voltage, the 3rd on-off controller 29 was transferred to second switch newel post II (see figure 4) to second switch unit 27.
Correspondingly, the input end of the other end of second playback head 13 and playback amplifier 14 is by first and second switch elements 26 and 27 ground connection.Two terminal shortcircuits of first playback head 12.
Thereby, when tape moves with record type under this condition, to be amplified by prime amplifier 17 from the external input signal of input end 18, in order monitoring signal to be delivered to output terminal 15 then, this signal is sent to second playback head 13 by recording amplifier 16 simultaneously.Thus, with signal record on the tape of second cassette holder.
5, the first and second two cassette holders replication status of tape of all packing into.
At this moment, because detecting device 19 outputs is the voltage of medium level, first on-off controller 24 is received the 3rd switch newel post III to first switch element 26, and same, second switch controller 25 is also received the 3rd switch newel post III (see figure 5) to second switch unit 27.
Correspondingly, in this case, first playback head 12 and second playback head 13 end separately are by first and second switch elements 26 and 27 ground connection.
Thereby, when tape moves with copy mode under this condition, amplified by playback amplifier 14 from the signal of first playback head 12, in order to monitor this signal is guided to output terminal 15, simultaneously, this signal is delivered to second playback head 13 through recording amplifier 16.
Therefore, the cassette playback signal of first cassette holder can be recorded, and promptly is replicated on the tape of second cassette holder.
In view of aforesaid line construction of the present invention, each playback head of two cover cassette holders only need have a recording amplifier and playback amplifier system.Conversion of the selectable recording of each cassette holder, tone playing state and replication status switch, not can owing to the input and output by the conversion portion signal very close to electric coupling cause that class problems such as vibration, leakage are not the converting systems of an open close signal circuit because of native system.
Particularly, according to the present invention, when only when first cassette holder is packed tape into, the playback head of this cassette holder can automatically be in recording or playback duty.When only when second cassette holder is packed tape into, the playback head of this cassette holder also can automatically be in recording or playback duty.In addition, when two tapes were respectively charged into two cassette holders, the playback signal of the first cassette holder tape can be recorded on the tape of second cassette holder, that is to say, can automatically be in replication status.Therefore, the present invention has improved operability greatly and has been very practical.
Describe in detail although the present invention is the way of example with the reference accompanying drawing, what should mention attention is, some variation and to revise can be tangible concerning those skilled in the art.Thereby, unless this class variation and modification and of the present invention irrelevant, otherwise should comprise in the present invention with work.

Claims (2)

1, one is equipped with first and second tape drums, common playback and the dual-cassette tape recorder of recording amplifier and one group of switch element, it is characterized in that comprising: a pick-up unit, described pick-up unit comprises that being used to detect pack into one first detector switch and being used to of state of tape of described first tape drum detects pack into one second detector switch of state of tape of described second tape drum; One is used to control the switching controller of described switch element group, described switching controller comprises one first on-off controller and a second switch controller, described first and second on-off controllers are used to respond the output signal of described pick-up unit, control the appropriate section and the playback head of described first and second tape drums and being connected of described playback and recording amplifier of described switch element group respectively; One is used to detect and whether has an external input signal that need be input to described recording amplifier and control the input control device of this signal to the playback head of one of described first and second tape drums, described input control device comprises that one detects the input controller and one the 3rd on-off controller of the outer input signal of input end, the described the 3rd opens controller is used for controlling described switch element group when having external input signal appropriate section, so that described external input signal is added on the tape drum playback head that tape is housed in described first and second tape drums.
2, the dual-cassette tape recorder described in the claim 1, it is characterized in that: described second switch controller and described the 3rd on-off controller are controlled the same section of described switch element group, and the control operation of described second controller has precedence over the control operation of described the 3rd controller when described first and second tape drums are all packed tape into.
CN85107240.2A 1984-10-01 1985-09-28 Double cassette tape recorder Expired CN1004178B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP59205762A JPH0619866B2 (en) 1984-10-01 1984-10-01 Double cassette text recorder
JP205762/84 1984-10-01
JP205762/1984 1984-10-01

Publications (2)

Publication Number Publication Date
CN85107240A CN85107240A (en) 1986-08-27
CN1004178B true CN1004178B (en) 1989-05-10

Family

ID=16512244

Family Applications (1)

Application Number Title Priority Date Filing Date
CN85107240.2A Expired CN1004178B (en) 1984-10-01 1985-09-28 Double cassette tape recorder

Country Status (2)

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JP (1) JPH0619866B2 (en)
CN (1) CN1004178B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6352127U (en) * 1986-09-24 1988-04-08
JPS63171461A (en) * 1987-01-10 1988-07-15 Matsushita Electric Ind Co Ltd Dubbing device for video software tape
KR960038875A (en) * 1995-04-27 1996-11-21 김광호 Signal I / O Line Switching Circuit of Composite Video Recorder
IT201800002534A1 (en) 2018-02-09 2019-08-09 Plastic Components And Modules Automotive S P A Vehicle ventilation diffuser.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013060Y2 (en) * 1977-05-02 1985-04-26 東洋通信工業株式会社 Cassette tape recorder for duplication

Also Published As

Publication number Publication date
JPH0619866B2 (en) 1994-03-16
CN85107240A (en) 1986-08-27
JPS6185629A (en) 1986-05-01

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