DE2837598A1 - CONTROL DEVICE - Google Patents

Description

PATENT LAWYERS

Dipl.-Ing. A. Wasmeier

Dipi.-frig. H. Graf

Patent Attorneys PO Box 382 8400 Regensburg

To the

German Patent Office

8 Munich 2 D-8400 REGENSBURG 1 GREFLINGER STRASSE 7 Telephone (09 41) 5 47 53 Telegram Begpatent Rgb. Telex 6 5709 repat d

Your sign Your message Our sign Your Ref. Your letter Our Ref. COp 9588

23 ο August 1978 G / He

Applicant: PETER COPELiID, 11, June Close, Pagham, Bognor,

Regis, Sussex P021 4ÜH, England

Title; "Control device"

Priority: UK No. ₀ 37 844/77 _o from 10 September 1977

No. 2172/78 of January 19, 1978

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Accounts: Bayerische Vereinsbank (BLZ 750 200 73) 5 839 Postscheck Munich 893 69-801 Place of jurisdiction is Regensburg

7th
8/23/198 G / He - <- ■ Ο / ρ 9588

"Control device"

The invention is concerned with improvements in and relating to playback devices and accessories for such playback devices. The invention is preferred but not exclusive Applicable to tape recorders, both to tape recorders as well as with video tape devices or video recorders. However, the invention has application to wired display devices or other various devices such as for example, in the case of disc playback devices that exclusively use Playback function and not suitable for recording information in piled arrangements. The term "playback device" is therefore to be viewed very generally in the context of the present invention and relates to all possible devices that are suitable for the reproduction of stored data.

The current common practice with tape devices is to put the tape on a Provide coil, which can be referred to as a "supply coil". When the device is operated, the tape is removed from it Supply reel unwound on an empty reel at a constant speed controlled by a tape transport roller will. The tape runs past a head in which signals are induced according to the different or changing along the band magnetization of this band. These signals are then amplified before being sent to a loudspeaker, a screen or a cathode ray tube, etc. are supplied.

Usually such a tape transport roller with a Provided counter, so that the operator at least approximately can determine which point on the tape is currently facing the playback head opposite. For example, does the tape contain a lot of different information that is sequentially displayed on the Tape are stored, the operator previously had to find out at which digit the tape has approximately the point where for example the tenth piece of information begins. The operating

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person, could use the so-called forerun, the Usually in such devices it is provided to the tape at a higher speed than the playback speed (i.e. the speed at which playback actually takes place) until the counter reaches a reading nat, which roughly corresponds to the desired or required status. Then the operator could use the tape device switch to playback so that the end of the ninth item of information could be heard at reduced tape speed, which is then followed by the tenth piece of information. This approach is not foolproof, however, so to ensure a complete Listening to the tenth piece of information, the operator must ensure that the counter is correctly set to the beginning of the tape and that the switch to playback in right moment.

The invention is therefore based on the object of a playback device or to show a control device that can also be used as an additional device for playback devices, in which (Control device) according to the invention means are present with where the playback device is switched from one function to the other without any action by the operator, and zxmr in addition to a stop function, this switchover at one or more preselected points at those in the tape device used storage means takes place, and zxvar as a function of information or control information on the storage means.

In a further development, the invention relates to a playback device or to a device or control system which is used as an additional device for such a playback device wherein storage means used have various information recorded one after another, and after a selection has been made or after a command has been entered, which information is displayed is intended to perform the following operations without the operator's intervention

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to be carried out:

Vorlauf "until the desired information on the reading device or

if there is a tape device on the tape rehead; End of the advance and switch to playback; Playback of the desired information to the end; Switch off playback and switch to rewind or on complete return of the storage means, these being returned or wound up to the starting point; Stopping the playback device as soon as the beginning of the storage means or the starting position has been reached or but a predetermined combination of these functions has been achieved.

Usually, a tape is used as a storage element in a control device, as described in detail in the following paragraphs, this tape having a plurality of information marks, one of which is arranged in front of an item of information on the tape. Means are also provided to count these information marks when they move past a sensing or measuring device. The information marks can for example be formed by a reflective metal foil which is attached to the tape, the sensing device containing a light source and an element responsive to light, for example a light-sensitive resistor, a photodiode or a photo transistor. The arrangement is such that when an information mark is opposite the sensing device, light from the light source is reflected to the light-sensitive element, whereby this element emits a corresponding counting signal, for example by changing its resistance value. Instead of such marks which are attached to the tape, the tape itself can also have signals of a predetermined specific type, which then form such information marks. These signals can be, for example, pulses of a preselected frequency. These signals can also be counted. Furthermore, it is also possible, in the case of audio or video tapes, the absence of the entire or

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part of the audio or video information as such to use as an information mark signal., It is "For example, it is also possible that the sync pulses, for example the frame sync pulses of the video signal are used solely to generate a pulse or a pulse train, where this impulse or »this impulse sequence is counted» It would of course also be possible to count the sync impulses, for example the image sync impulses itself «

For the above-mentioned counting of the signals are preferably available integrated circuits, for example Combinations of circuits under the type designation SW 7490 and SN 7442 are available, used to represent the ones digit a count «closes to such a circuit Then a second combination of this kind is used in order to obtain the tens digit or tens digit of the count.

Suitable pushbuttons, which are usually numbered with the digits 0 to 9, are preferably used to enter the command or the hummer of the information that is to be reproduced. By pressing these buttons, two locking devices (electrical or electronic locking devices) from a total of 20 such devices are set in a suitable manner _o These devices are provided in two groups of ten devices each, namely ten devices for the ones digit and ten devices for the tens digit . Furthermore, coincidence gates are provided, if the ones digit and the tens digit of the count are equal to the ones digit and the tens digit as they are stored in the lockable elements, the device keeps playing without an operator input necessary is.

Two embodiments of the invention will be discussed in detail later in order to explain the invention in its various aspects using an example. The facility shown is largely manufactured with integrated circuits in order to obtain the most compact and inexpensive design possible.

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To protect against interference, such as noise, switch-on oscillations or impulses etc. that may occur in the playback device or in the tape recorder or at other locations protect is the control device according to the invention or the circuit constructed with the integrated circuits for both

Entrances

the embodiments are provided with light-sensitive and light-emitting outputs for good insulation. According to a further aspect, the invention provides a tape which carries a large number of different pieces of information, which are stored one behind the other on the tape, which has a large number of information markings, one marking being provided in front of each piece of information and one end information marking at the end the last information is provided, and which (tape) carries a marking indicating the end of the tape, which has a best in the mth formation and follows the end information marking.

According to a further aspect, the present invention relates to a device that can be used as an accessory to a Tape device can be used, the tape device being used in conjunction with a tape on which a variety of different Information is stored one after the other, each information having an information mark on the tape. These Information marks are counted and the device switches from one function to another (e.g. from forward to playback or from playback to rewind) if a desired number of marks was counted.

In the later description of the selection or logic circuit To simplify the description, signals that have a low warning level are denoted by "O" and those signals that have a high voltage level are denoted by "L".

The preceding statements and the further features of the invention are based on the following description of two

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Embodiments better understood. Show it:

Fig. La and Ib - when they are joined together according to the interrupted Lines - a block diagram of a selection and counting arrangement for use as a part or as a Auxiliary device for a reproducing device;

FIG. 2 shows a perspective illustration of an I ¹ UhI or measuring head of an embodiment for use in the device according to FIG

FIG. 3 is a circuit diagram of the measuring or sensing head according to FIG. 2 together with the circuit of another, similar measuring head;

Fig. 4- is a line diagram of a circuit for use in the Arrangement according to Figures 1, 2 and 3 j

Figures 5 and 6 show a tape for use in a reproducing device or in a tape device, with markings attached to the tape;

Figure 7 is a circuit diagram of another embodiment for use in the device according to FIG. 1, to at least part of the arrangement shown in FIG. 3 substitute.

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One embodiment of the device is intended to be connected to a tape recorder and to work together with a tape T (audio tape or video tape) according to FIGS. 2, 5 and 6, which carries a large number of successive different items of information. The device has a control panel with ten pushbuttons, labeled 0 to 10 and shown in FIG. The operator has a directory or an index _o, from which the sequence of the designated information on the tape T and the corresponding number can be seen. If, for example, the information number 57 is desired, it is only necessary to press the push button for the number 5 and then release it again and then to press the push button for the number 7 and release it again. The tape T then begins to wind itself from one tape reel onto the other tape reel, this winding process being stopped when the beginning of the information 57 is reached. The tape device is automatically switched to "play" or _e "Playback". At the. At the end of the information 57, the reproduction is stopped. The tape is then rewound to the beginning and stopped.

Whenever the number assigned to the desired information is less than 10, the operator must press the pushbutton with the number 0 in the tens digit before the the pushbutton assigned to the units position is pressed. For example, if you want the information in accordance with section 7, so first the pushbutton with the number 0 is pressed and then the pushbutton with the number 7 «The device can be used for tapes that hold up to ninety-nine different pieces of information.

Around the tape T for use in one embodiment To prepare the device shown, foil counting marks GM (Figures 5 and 6) are attached to the tape, one each Brand at the beginning of every piece of information. These counting marks CM extend, as shown, about half the width of the tape T and are provided on the upper half of the belt. Each counting

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mark CM usually has a length of about 60 mm and is made of a flexible, light-reflecting metal foil «The device is provided with counting means which are arranged in such a way that the counting marks CM1 ₉ CM2, CMJ _{0000 are} moved past a SHihl measuring head SH1 ( I ¹ Ig ₀ 2) to count _o If the units and tens that were counted correspond to the numbers entered in the keyboard or the numbers entered in the keyboard (in the example above 57), the device automatically switches the tape recorder to " Playback ", whereby the information is played back until the next counting mark (in the given example the counting mark 58) reaches the measuring head SH1, which indicates that the selected information has ended«

As soon as a two-digit number is entered on the keyboard i-jurde, has no further selection or no further pressing of push buttons any more influence o

The operation of the selection and counting device is as follows described in more detail with reference to FIG

The Mummer the information via the keyboard, which consists of ten push buttons, input These push buttons are connected to two separate sets Δ and B of the bistable electrical Einrastoder memory elements connected to the set A stores the Zehnerinä formation or _o the information corresponding to the tens digit and said set B stores the unit information bzxf _o the information corresponding to the units digit _o the number of the information x is entered in the order in which it is written, d ₀ h _o first the tens digit and then the siner digit _o the bistable elements A and B can handle the incoming data record when a high signal is present at their clock signal inputs _or on the clock signal lines A and B, xtgIcIkss is referred to below as "L". Therefore, when a pushbutton is pressed, the input of an element in the Sä; z A goes to a low value corresponding to OV over, which is designated in the following with "0" xirird »At the corresponding output Q of the element has the value 0, while the inverted output ^ takes the value L _o To maintain this state, is

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now on the clock signal line the signal O to all other Keep input information away from elements A »

All of the output signals Q ″ or all of the signals of the outputs Q of the bistable elements of set A are fed to ten inputs of a NOR gate 110. This gate has the form of a NAND gate s with eight inputs and a NAND gate with two inputs, the If there is a signal O at one of the inputs, this leads to an output L _e The output signals of these two NOR gates with eight or two inputs become a positive NOR gate with two inputs supplied, with an input signal L at one of the inputs leading to an output signal O at gate 102 _o

The output signal of the gate 102 is fed to the PRESET input (preparatory input) P of a bistable flip-flop 10J " The state of this flip-flop 103 is determined by a monostable device 2, which acts as a clear signal when it is switched on or "delivers when a stop signal is received, as is still the case is described. For this reason, the output Q of the flip-flop 103 has the value L before a pushbutton is pressed » When a pushbutton is actuated, the above-described operation of the circuit results in the input P having the value Assumes 0, so that the output signal ζ then assumes the value 0.

The output signal Q of the flip-flop 103 is inverted with the aid of an inverter 104 and the L signal now present at the output of this inverter is fed to a power NAND gate 105 _o All four inputs of this device (only one is shown) are connected in parallel , since only one function is required to generate an output signal for controlling the clock signal line A for the bistable elements A.

The signal L at the input of the NAND gate 105 generates an output = signal 0 at this gate. This output signal is the clock signal for the bistable elements of the set A ₀ A signal 0 on the clock signal line A ensures that all further input data,

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which are fed to the bistable elements of set A, can no longer be received by these elements ,,, For this reason, no further information can be recorded until an erase pulse is supplied by the flip-flop 103. The information corresponding to the tens digit is stored in this way _β

The clock signal line B is in a similar manner as the clock signal · - line A driven d _o h _o with the aid of a flip-flop 103 'and with the aid of a NAND gate 106 which, in turn, headed for a power NAND gate 105. "The output signal Q of flip-flop 103 * praises a value L when it is switched on or when a stop signal occurs.

The outputs of the bistable elements of set B are connected in a similar way to the outputs of the bistable elements of set A to the NOR gate 101 °, which has two + inputs and which in turn is connected to a positive NOR gate 102 *, the has two entrances. The output of gate 102 'is connected to the input of the monostable device 1 knows that only the corresponding digit of the information enables this monostable device and not corresponding to the tens digit of information _s

The output signal Q of the flip-flop 103 "is together with the Output signal of the NQR gate 102 ° the two inputs positive NAND gate 105 supplied, both input signals must have the value 0, so that at the output of gate 106 the Information L is present.

After the information corresponding to the tens digit has been entered, the information 0 is present at the output Q of the flip-flop 103 " _o The output of the NAND gate 106 assumes the value Is _o This value is fed to the input of the 3feistungs- = NJM> - = gate 105 _o The output

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signal of the NAND gate 105 'thus has the information 0 and accordingly also the clock signal line B _0. In this way, the information corresponding to the units digit is stored

A further actuation of the keyboard has no effect as long as the Elip-Plops assigned to the bistable elements A and B are not deleted. The information on the clock signal line B is used to achieve the unwinding of the tape _s , taking into account the NAND gate 107, which is responsible for playing the tape, and taking into account the NAND · = · gate 108, which is responsible for the Rewinding the tape is responsible _o This means that power gate NAND gate 109 has the value L in order to achieve the unwinding of the tape when neither a playback or PIAY signal nor a rewind or REWIND signal is present.

The output of the NAND gate 106 is also connected to the input of a power NAND gate 110 in order to receive a STOP output signal. If a pushbutton is printed, or if only a pushbutton is printed, the value 0 is applied to the input of the power = NAND gate 110, whereby a value L for the stop signal is generated at the output of this gate at the input of the gate IM) = gate 110, the value of L, thereby obtaining at the output the information 0, and thereby the stop information or _o the stop signal is removed.

The PMY signal is generated by the states of the bistable Elements A and B is compared with the states of a two-decade counter 111. If this counter 111 has the same counter content as indicated by the entered digits, then there is a match «This match or a corresponding signal is shown in the NAND gate 112 is compared with the signal on clock signal line B, before the NAND gate responsible for the playback process is actuated 113 as will be described below. ■

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The count pulses are generated 6 (light emitting diode) of an LED element, which is provided in the measuring head and above the LBR element 2 (light sensitive resistor or _o photoresistor) is arranged, the resistance value of the LDE element 2, _o is reduced when the LED -Element lights up, then the signal O is present at the input of the monostable element 3 “When the LED element 6 stops shining, does the resistance value of the LDR element 2 increase _? whereby the voltage present at the input of the monostable device rises, with the result that the monostable device 3 is triggered or controlled via a Schmitt trigger. The monostable device 3 is effectively triggered in this way by the absence of the counting signal, regardless of the duration or the speed of this signal and thus also regardless of the speed at which the tape T moves past the measuring head _o

The monostable device 3 supplies a pulse at its output Q, the duration of which is determined by an RG time element. This pulse is used to control the one-decade counter purple. The output signal of this counter is in binary form and is therefore supplied in binary form to a decimal counter 114, where this signal is converted into a decimal signal. The signal corresponding to the numerical value 0 is supplied to the decade counter 111b. When the count "O" at the one-decade counter lilac is reached, the decade counter 111b delivers the value "I ¹ O" after the binary-to-decimal conversion

and B The output signals Q of the bistable elements A / xferden equal = like 20 χ 2 input HAUD gates _o Each set of these elements is actually connected to its own set of NAND gates 115 with two inputs, the other input signal then from Eiern binary-decimal converter S 114 originates »In this way, each output signal Q of each bistable element A and B is compared with the output of the converter 114. The outputs of these two sets of 10 χ 2 input HAHD gates are then fed to two sets of NOR gates 116 having ten inputs, these gates being comprised of eight and two input NOR gates, respectively

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exist and control NOR gates with two inputs. The output signals each of these NOR gates 116 provide the match signals for the ones place and the tens place.

The output signals from the match detectors NAND gates 115 are such that all input signals have the value L so that an output signal with the value 0 is achieved. An input signal with the value O at one of the • ^ inputs leads to an output signal L. The output signals these NAND gates are fed to the NOR gates 116, where for a value of the output signal O all input signals den Must have value Ir. An input signal O at a gate input leads to an output signal L.

If a selection was made but no match "exists, the input signals to the NAND gate 115 of the selected number the values L (selection of information was made) and L (state of the counter). For this reason, "the output signals of the NAND gates 115 (taking into account "of both decades) O. The remaining NAND gates 115 have output signals with the value L. For this reason, one of the two NOR gates 116 provided with eight or two inputs has on its Output the value L.

As soon as a match is achieved, the signals L (the selection of the information is present) and O (the counting process was used to select the number continued), so that the output signals of the NAND gates 115 have the value L for coincidence or agreement. The output signals of the other NAND gates 115 also have the value L (no selection signal with the value O - no count signal with the Value I »). For this reason there is eight at the outputs of both or two-input NOR gate 116 has the value O.

The outputs of the gates 116 are fed to a further gate 117 with two inputs, both input signals having the value 0 must have so that an output signal with the value L is generated. If this is achieved with coincidence, they take for both

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Decades of separately provided coincidence signal lines or Match signal lines 118 and 119 have the value L.

These numbers of digits for the ones and tens are generated by a NAND gate 120 to provide a final coincidence signal when both selected digits match the ones and tens counts. The final coincidence signal has the value 0 when coincidence is reached. The output signal of the gate 120 is, on the condition that a coincidence signal and a signal from the clock signal line B have been transmitted through the gate 113, inverted by an inverter and is supplied to the power NAND gate 113, which then supplies the PLAX signal. Difficulties can arise when switching on, since the inputs at the NAND gate 120 have the values 0 (no selection) and 0 corresponding to the sequence of digits "0" to be counted. Since this would lead to a false "coincidence signal", the coincidence signal is generated using the clock signal line B in such a way that both the coincidence signal and the signal on the clock signal line B must have the value 0 before the Playback of the tape is made. This ensures that a playback of the tape does not take place without first a Auswa was hit hl.

When the PLAY signal is no longer present, i.e. when there is no longer coincidence (the counter has the next Mark counted), then increase the spam level of the input signal at the power-KAND-Gato 113 pb-, whereby the monos.tabile Element 4 is controlled. German output Q of this monostable Element 4 is connected to the ERESET input of the via a diode Dl bistable flip-flops 121 connected. This flip-flop 121 is therefore triggered when the PLAY signal falls. The output signal § of flip-flop 121 is fed to a power NAND gate to effect rewinding of the tape.

This rewinding or the corresponding signal for this is also obtained if a number has been selected that is larger is than the number of marks on the tape T.

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This is achieved by stopping and at the end of the tape Counting signals are provided.

The sensor or measuring heads SH1 and SH2 react to one another and are gated in a playback control circuit in such a way that a further LED element 5 (light-emitting diode) lights up, which supplies a rewind signal. This LED element 5 is arranged above the LDR element 3 (light-sensitive resistor or photoresistor), which in turn is connected to the PRESET input of the flip-flop 121, just like the diode connected to the output of the monostable element 4- dl ₀ This arrangement provides a simple NOR function in such a manner that the flip-flop 121 may be triggered either by a Rückspulsignal at the end of the tape or by a signal indicating the end of the playback process.

Since the stop signal LED4 and the counting signal also have a Rewind signals occur, a certain gating is necessary so that a stop or a stop signal does not occur when both the count signal and the rewind signal are present. This is achieved by the RESET signal (reset signal) for the entire logic circuit is made dependent on whether a stop signal is present alone or whether it is switched on became. Since the output signal at the monostable element 5 for the stop signal together with the Q output of the count signal dem Gate 123 is supplied, the! NAND gate 123 generates the RESET signal, this signal is suppressed when the counting signal is present.

In order for this arrangement to work reliably, it is necessary that the count signal disappears after the stop signal is removed to terminate the rewinding of the tape. Since the monostable Element 3 for the count and the monostable element 5 for the Stopping are triggered by a rising positive edge, the dragged edge of the metal foil is responsible for this Signals. The counter mark CME must therefore be aware of the stop signal generating film or mark SME extend (Fig. 6). To that

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To avoid the occurrence of a similar situation when the tape begins to rewind, the counting mark CME should continue to extend slightly over the stop mark SME at the other end end of the baseband signal in the form of a T is formed, as shown in Figure "6 istο the transition from rapid unwinding of the tape to the playback or from the unwinding to the rewinding could lead to a stillage or _o to a scribing or increased tensile forces in Lead tape, which finally tears off the tape = To avoid this problem, a pause function is provided between the above-mentioned functions. its output Q to the input of the power NAHD gate 123 is supplied, when the Abspul- or _e omitted forward signal, by the falling level _o the falling edge or the monostable element 5 triggered, whereby a stop signal having a length is obtained, which is determined by VRL _o in this way, each time that xirenn the output signal from forward to replay or flow passes to return, a delay obtained fact that the length of this delay is made variable, the display may or " Adjustment device used in conjunction with equipment that has different tear characteristics,

The selection and logic circuit thus has ten switchable inputs, namely ten keys, which can also be arranged at a remote location, three light-sensitive inputs LDR1, LDR2 and LDR3 as well as four tape control function outputs in the form of T! TLE or LED signals generated by the elements LEDl, 1ED2, IpED3 and LED4- are generated "

The interface between this device and relay-controlled tape devices essentially depends on the design of the circuits to suppress noise and switch-on or transient processes from that are used in such devices, It is

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at

It is easy to understand that, under ideal conditions, the logic could also be used to control compatible inputs for remote control of a tape recorder with its TTL output. In order to achieve, however, an extremely high insensitivity to noise "or noise, a photo-electronic interface M- is or are photo electronic coupling elements on all input and output connections of the tape recorder used. This is achieved with the aid of the relay control circuit shown in FIG. Attained. If This circuit is used as an interface between the selection and logic circuit according to Fig. 1, so it is possible to connect this unit to any relay-controlled tape recorder and to operate the system unaffected by houses and other disturbances. It will now be described in the following , in which way the positive pulses that are fed to the input of the monostable element 2 are generated, one pulse for each counting mark OM that moves past the head SHl.

The upper half of the tape T adjacent (Fig. 2) to cooperate with the counting marks CM is the measuring or cooling head SH arranged, which contains an LED element SHlD (light emitting diode) and a photo transistor SHlPT. As head SHl can for example, a device made by Texas Instruments Ltd. can be used. offered under the designation TIL 139 will. The circuit of the head SHl is shown in Fig. 3 within the broken line labeled SHl. The element SHID is supplied with 16 V from a voltage source, with the positive voltage at the output 25 of the voltage source a resistor R21 is applied. The other output of the voltage source, which has a voltage of zero compared to the circuit ground, is the connection 23. The emitter of the photo transistor SHlPT is connected to the base of another transistor TR6 (e.g. SN2926G) connected to a Darlington pair. The arrangement is made so that whenever one of the brands GM is in a Arrives in the position in which light is reflected from the element SHID to the phototransistor SHIP, as indicated in FIG

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is, the base current of the transistor TR6 increases. The connector of the transistor TR6 is connected to a terminal 29, which in turn is connected to a terminal 31 in the Jig. 4 communicates. Therefore, when a counting mark CM reaches the position shown in FIG. 2, an LED element LED6 lights up, which is connected in series with a resistor R19 between the connection 31 and the positive connection 33 (16 V) (FIG. 4 ). The connection 33 is connected to the connection 25. A photosensitive resistor IiDR2 is arranged to cooperate with the element LED6 (light emitting diode) (see FIG. 1). This light-sensitive resistor and all other light-sensitive resistors that are used can be cadmium sulfite cells, which are available, for example, from Electrovalve Ltd., Egham, Surrey under the name TPMD. When the element LED6 lights up, the resistance value of the light-sensitive resistor LDR2 and thus also the input signal at the monostable element 3 »with; whose input is connected to one end of the photosensitive resistor IDR2. This drop in the input signal does not trigger a triggering of the monostable element 3. However, if the marker leaves the position shown in Fig. 2, the element LED6 goes out, whereby the resistance value of the light-sensitive resistor LDR2 increases and with it the input signal at the monostable Element 3 (input signal reaches the value L), which triggers this monostable element. The Q output of the monostable element ¹ : j therefore supplies a short positive pulse to the counter 11a, although the shape of this pulse is independent of the speed at which the tape moves past the head SH1.

The relay circuit according to FIG. 4 will now be described below will.

It has already been described in connection with FIG. 1 that when rewinding is required, the output of the gate 122 has a high voltage value (value L) and which leads to the element LED1 being switched on. In a similar way

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the output of the gate 113 has the value L when the tape is required to be played, whereby the element LED2 is switched on. When the unwinding of the tape or the tape feed is required, the output of the gate 109 assumes the value L, whereby the element LED3 is switched on. Finally, when a stop is requested, the output of the gate 123 assumes the value L, whereby the element LED4- is switched on. As is now shown in FIG. 4, the light-emitting diodes LED1, 2, 3 and 4- are arranged so that they cooperate with light-sensitive resistors LDE4-, 5, 6 "and 7, with each light-sensitive resistor in the base of one Voltage divider of one of the EPN transistors TRl, 2, or M- is arranged. These transistors can be, for example, transistors with the type designation 2N37O4-. RYl, RY2, RY3 and RY4- denote the corresponding working or control windings of relays that ( working windings) are arranged in the collector circuits of said four transistors "in parallel with the working windings of the relay are the diodes D2, D3 D4, and D5, _are? the for damping or suppressing non-return pulses.

For example, when the element L "KD4 is lit, the resistance of the photosensitive resistor IDR? Is reduced, which increases the current through the transistor TR4. The increased collector current of the transistor TR flowing through the winding RY4 energizes the corresponding relay, whereby the contacts RY4A and RY4-B are switched to the position shown in Pig. 4 energized position. the relay windings ryl, RY2, and RY3 and the corresponding contacts are in the 3? ig. 4 shown in the non-energized state, i.e., _e., in a state in which these three relays are located after switching on or before pressing a pushbutton. The relay winding RY4 is already in the energized state at this point in time.

It can be seen that a lamp Ll. .lights up, wherein the current from terminal 33 through the lamp Ll and the

9098 12/0751

August 23, 1978 G / He - 23 - C / p 9588

Contacts BY4A and EY2A flows back to terminal 39, the has the voltage 0 compared to the circuit ground. The connection 39 is connected to the terminal 23. The lighting up the lamp Ll indicates that a selection of a certain desired Information can be taken by pressing the appropriate pushbuttons. Also the contacts EY4B are open so that a common connection point 41 with none other part of the circuit of the 3? ig. 4- is connected.

When the second pushbutton (pushbutton for the ones digit) is pressed the element LED4 goes out. The working winding RYA is therefore switched off, as a result of which the lamp L also goes out and the connection point 41 via the contacts RY4B with the lower Terminal of element C12 is connected. When the key for the ones digit is pressed, the element LED3 lights up, causing the Resistance value of the light-sensitive resistor LDE6 reduced will. As a result, the working winding HY3 is excited and The connection 41 is connected to a connection 43 via the contacts EY3B. This means that the tape device is operated in the sense of unwinding or in the sense of a tape feed, for example by applying a direct current to a suitable relay.

In the case of dual coincidence, the tape feed is stopped, whereby the work coil EY3 is switched off and the terminal 43 of the entire Circuit according to FIG. 4 is separated. At the same time, playback is initiated, causing the element LED2 to light up and consequently the resistance value of the light-sensitive resistor ÜDE5 decreases. This energizes the working winding EY2, whereby the connection 41 via the B-contacts of the relay EY4, the B-contacts of the relay RYl and the B-contacts of the relay RY2 with the terminal 45 is connected. This leads to a control of the Tape device in the sense of a reproduction.

When playback is complete or when the next one Counting mark has reached the head SRI, the working winding becomes RY2 switched off, whereby the connection from connection 41 is disconnected. This will turn off playback on the tape deck. Simultaneously the element LEDl lights up. This leads to the

909812/0751

August 23, 1978 G / Ee -24-- ₀ / p 9588

The resistance value of the light-sensitive resistor LDR4 decreases, whereby the working winding RYl is switched on to the connection 41 to be connected to terminal 47. This connection leads to the tape recorder being controlled in the sense of a rewinding process is, for example, by applying a DC voltage to a suitable relay.

When the tape is completely rewound, the stop mark SM has reached the head SH2, causing the element LED4 to light up. This has the consequence that the resistance value of the photosensitive resistor IiDRl decreases, so that the working winding RY4 is switched on is, whereby the terminal 41 is separated from the remaining elements of the circuit of FIG. 4, whereby the tape recorder is stopped and the lamp Ll lights up again.

From the above it can be seen that the one counting mark, which leads to a dual coincidence, the tape is stopped and playback is started.

As shown in Fig. 6, the tape T carries after the information with the highest digit an end counting mark that is provided is to stop playback and start rewinding in the normal manner described above when the information has been played with the highest digit. The tape continues to wear after the information with the highest digit and after the end counting mark a mark TE, which indicates the end of the tape, and that of a stop mark SME (usually 60 mm long) and consists of a counting mark GME (usually 100 mm long), which are arranged in such a way that both marks are effective at the same time. In the case of tape devices that have a tape transport roller with a counter, the length of the tape corresponds to between the end counting mark GM and the TE brand about five revolutions of the roller. A similar length of tape is preferably also between the stop mark SM provided at the beginning of the tape and the first counting mark.

The mark TE is arranged in such a way that it delivers a stop and count signal at the same time, which results in the preroll being terminated

-9093 12 / -07S 1

8/23/1978 G / He - £ 5 - G / p S 583

■ and the rewinding process is initiated, as follows ■ is described.

The mark CME of the mark TE "indicating the end of the tape causes the connection 31 to assume a negative value relative to the connection 33, so that the collector of a PEP Transiäbors TR "based on its emitter takes on a negative value. The emitter is connected to the terminal 33. Simultaneously causes the stop mark the mark TE that the terminal 37 assumes a negative value with respect to the terminal 33, the terminal 37 with the base of the Transistor TR5 is connected through a resistor R17 (10 kg / ohm). The arrangement is made so that the simultaneous Arrival of a stop signal from head SH2 and a counting signal from the head SHl causes the transistor TR5 to generate a collector current through the element IiED5, which is in series with a resistor R18 in the collector circuit, whereby the element IiED5 lights up.

The element TiBDj? (light emitting diode) is a light sensitive Resistor LDR3 (Fig. 1) arranged adjacent, so that when the element LED5 lights up, the resistance value of this light-sensitive resistance decreases. One connection of the light-sensitive resistor LDR3 is connected to ground, while the other terminal is connected to the diode Dl, so that when the resistance value of the light-sensitive Resistor IDR3 a negative pulse to set the flip-flop 21 is submitted. This causes the tape to rewind in the same way as the £ normally when switching the monostable Element 4- occurs; when playback is finished.

As soon as rewinding has been initiated, as indicated, the Α-contacts of the relay RYl closed, whereby the element LED7 lights up as soon as the mark SME of the wall end indicating mark appears.

909S3-2 / 07S1

August 23, 1978 G / He "-2S-- C / p 9588

The following points are also essential:

The one connected in parallel to the light-sensitive resistor EDR5 Capacitor GIl causes a delay to ensure that the relay RYA- responds before the relay RT2, if from the flow on Playback is switched.

The capacitor C12 suppresses switching sparks at the B contact of the Relay RYA.

the playback must be switched off, the rewind function, since the connection 45 via the B contacts of the relay RXl only then is connected when the relay RYl is not energized.

A voltage source that provides a voltage of 5 V (stabilized) with respect to the circuit ground and provides a conventional circuit can be used, but care must be taken to ensure good smoothing and, above all, to ensure that existing Mains voltages and other interference voltages are filtered out will.

The same voltage source can be used to supply the 16 volts to a separate output for powering the circuits to be carried out in accordance with FIGS. 3 and 4.

In the embodiment described, it was assumed that that all control information from the tape from there provided marks can be obtained from metal foil. Referring now to Fig. 7, there is shown a circuit with which counting signals from one tape or another are shown Data carrier can be obtained, the lack of video or audio information leads to an output signal at a light-emitting diode, which (output signal) is then used for control of the photosensitive resistor LDR2 of Fig. 1 is used can be.

909812/0 751

August 25, 1978 G / He - 2? ■■ Ο / ρ 9588

The circuit shown in Fig. 7 is for driving by a composite video signal (e.g. for driving by a video signal supplied by a video recorder, etc.), the input of this circuit being so designed is that even after this circuit has been connected to the output of, for example, a video recorder, a second device can be connected to this output, e.g. a video viewer can be switched on. The circuit itself monitors a video signal and if such a signal is applied, a light-emitting diode ID1 serving as a display device is kept in the switched-off state. When the video signal is not applied and the circuit detects the absence of this video signal, the light-emitting diode LD1 is switched on. With the help of a sensitivity adjustment controller VRl it is possible to adjust the sensitivity of the circuit in one to adapt a wide range to the input level, with the appropriate setting, for example, by switching off the video signal can be tested.

The input signal is via a coupling resistor El as well fed to a voltage limiter via a coupling capacitor Cl, which is formed by the two diodes DIl and D12. This voltage limiter holds the input signal fed to the transistor TRIl below a value of 1.2 volts, even if higher voltage values are applied, such as for example at an increase in the supply voltage, when switching on or Shutdown can occur.

The signal is amplified by the transistor TRIl and the transistor TR12 via the capacitors 04-, C5 and via the controller VHl supplied. This connection acts as a low-pass filter, which means that the majority of the high frequencies of the adjacent video signal are used is suppressed, with only a part of the noise spectrum remaining in the absence of a video signal. With the help of the controller VRl the amplitude of the signal can be adjusted, which is fed to the base of the transistor TR12, in accordance with the Characteristics of the input signal.

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8/23/1978 G / He - ^ - C / p 9588

The low-frequency signal is with the help of the transistor TR12 amplified and then rectified and integrated with Help the diodes D13, D14, the resistor-es R7 and the capacitor C7. The transistor TRlJ is so across the voltage dividers, consisting of the resistors R8 and R9 a DC voltage signal fed. This DC voltage sigiBL has a high value when a video signal is applied while the value of the DC voltage signal is low in the absence of a video signal. In this way, the transistor TRI3 is switched on and off.

These two states of the transistor TRI3 are with the help of the The transistor TR4 is inverted, so that the light-emitting diode IDl in the collector circuit of the transistor TR4- lights up, if there is no video signal.

Although the circuit shown in Fig. 7 is primarily the Can replace counting marks on the tape, other marks on the tape could be dispensed with by a circuit that is similar to the in the 3? ig. 7 is the circuit shown. It would of course also be possible to do without the other brands if Tape devices are used that automatically initiate the rewinding process at the end of the tape used.

Although the above description of the two embodiments assumed that they were used as add-ons for tape devices it is of course also possible to use these described devices when manufacturing a tape recorder to build in there.

909812/0751

3α

Empty soap

Claims (12)

23.3.1978 Gr / Sch. C / p 9 ^ 88 -Patent claims: '/ \ j causes controller for a reproduction apparatus, particularly for a tape recorder, characterized by means by which without the intervention of a Bed enungsperson the reproducing means?; is to switch from one puncture to another puncture, including the stop function, at one or more preselected points on a storage or display element (T) which is used in the display device, as a result of information (CM) which is displayed on the Storage element (T) are provided. 2. Control device according to claim 1, characterized in that that the storage and return device (T) has a number of one behind the other arranged different information carries, and that the operator after met once Selection and input into the device, which information is to be reproduced, the poles of the following without any action on your part Operations or punctures received: Forward until the desired information is available on a reading device; Switching off the door run and switching on the playback; Playback of the desired information to the end; Switching off the playback function and switching to feedback the memory element to the starting position; Switch off as soon as the storage element has reached the starting position has reached or if a predetermined combination of such punctures has been obtained. 3 · Control device according to claim 1 or 2, characterized in that the memory means a tape ⁽¹ T), which carries a number of information marks (CM), each of which is arranged in front of an information, and in that means (111a, 111b) 909812/0761 are provided in order to count the information mark (CM) when it successively moves past a measuring or sensing device (SH) will. 4. Control device according to claim 3, characterized in that each data mark (GM) from a reflective metal foil is formed, which is provided on the tape (T), and that the measuring or sensing device (SH) a light source (SHID) and a light detector, e.g. B. a photosensitive resistor or a photo transistor (SHPT), the arrangement being such that when an information mark moves past (CM) at the measuring or sensing device the light from the light source (SHID) is reflected onto the light detector (SHIPT), whereby the latter, for example, by reducing his Resistance value emits a signal. 5 · Control device according to claim 3 or 4, that the band signals of a predetermined type which form the information marks. 6. Control device according to claim 5 ·> characterized in that the signals are formed by a pulse of a predetermined frequency. 7. Control device according to claim 5, characterized in that that when using a sound or video tape, the signals are formed by ^ ° ß the sound or video information completely or partially absent. 8. Control device according to Ant -ruch 5 _? characterized in that the tape is a video tape and that the signals comprise synchronous signals, in particular image synchronous signals. 9- Control device according to one of the preceding claims, characterized characterized in that a keyboard is provided into which the operation carried out by the reproducing device is input will. §09812 / 0751 10. Control device according to claim 9 _5, characterized in that the keyboard for operating two of twenty locking elements (AB) is used, which these locking elements are arranged in two groups of ten locking elements, namely ten locking elements for one digit and ten locking elements for a tens digit ·, and that coincidence gates (117) are provided, the reproducing device being switched to playback whenever the units digit and the tens digit of the count are equal to the entered tens digit, which are stored by two set locking elements without the operator having to intervene. 11. Control device according to one of claims 1-10, characterized in that that the inputs for the control of the display device light-sensitive elements (LDR) and the outputs the control elements have light-emitting elements (LED). 12. Control device according to one of the preceding claims, characterized in that the tape (T) used as a storage element carries a plurality of different information items which are stored one after the other on the tape, that the tape has a plurality of information marks (CM), one of which is arranged in front of each piece of information, that an end mark (SM) is provided at the end of the last information, and that a mark indicating the end of the tape of a certain predetermined design (SME ₅ GME) is provided after the last information mark. 13 · control device according to any one of claims 1-12, characterized in that a tape recorder with a tape (T) which carries a plurality of different information are ^x iiacheinander arranged on the tape in use, each information a Counter (CM) at the Tape has that these counting marks (CM) can be counted, and that the tape device switches from one function to the other (tape forward after playback or playback after tape rewind) when a desired number of marks have been counted. 909812/0751