DE4042576C2 - Control system for money operated compact disc phonograph - Google Patents

Abstract

The phonograph records skips which occur during playing of a selection as well as cancellations of selections which occur as a result of the player not being able to read a disk, an excessive skip time or an excessive number of skips, as well as the times of occurrence of skips and cancellations for later review. Autoplay and free play features may be set in terms of hours of the day and day of the week. Selections which have been made but not yet played may be cancelled after a predetermined interval following the time the phonograph has been turned off. The player is adapted to read the encoded playing time (apparent elapsed time) information from the disc and compares this to real elapsed time, having comparator recording a skip when the difference between real elapsed time and the apparent elapsed time exceeds a predetermined time.

Description

The invention relates to a device for an automati Nice player for playing various pieces and with switching on and off.

Automatic sound players or Phonogra phen, commonly referred to as jukeboxes and pressed after entering a certain amount of money who can order certain titles or pieces have been known for a long time. Such music boxes are usually equipped with records, which with driven at a speed of 45 rpm. With the be Known jukeboxes will be the minimum amount required thrown in, then using a keypad or the desired title is selected. The Au tomat then takes the plate from a magazine and places it with the right side up on a plate Record player.  

The control system for a music box of the above be written type often includes a number of additional options options for controlling the operation of the jukebox, for example, different billing options ten be provided, the amount of money entered on is drawn and the frequency is recorded with which the individual tracks were played. Under Facilities have also been used using this information realized that allow the customer, for example the most polar piece by pressing a specific button to select to play.

In addition, with some well-known music boxes, the possibility is provided after a certain "idle time", in which no further pieces of music were selected, one start automatic game mode. In addition, a manually operated switch can be provided with the the jukebox to a free game operation can be placed, during which time in tervalls no money has to be entered to a ge select the desired title.

In recent times, so-called CD music boxes have been found Lasers for reading out in digital form on a Compact disk or CD encoded music spread Application. Although these CDs are relatively insensitive They are sometimes sound recordings similar problems as with conventional records. Incidents, such as skipping individual audio tracks, and Failures are not uncommon errors on CDs. In In some cases the CD player is not even in at all able to read or play the CD. Both Control systems of the known type described above  no precautions are taken to make one Selection or a selected title for the case too cancel that the CD has a major error. It there are also no facilities provided for such Errors if they were found in the game mode for record a later review so the poss ability to create faulty records or CDs to replace.

Based on the prior art, the invention is the Task based on a facility for an improved Specify playback device with which it is possible to start a new operating phase for the player, for example wise for the time when a Lo opens again kals, defined initial conditions for the operation of the Bring about playback device.

This object is achieved by a device according to the invention solved with the features of claim 1.

It is an advantage of the device according to the invention, that after the lapse of a predetermined time interval valls after switching off the player, for example when closing a restaurant, the key data pieces already selected but not yet played can be deleted so that at the beginning of the operation of the Player after switching on again, for example wise after opening the next day, none the day before or similar selected pieces are played more but only the current from a customer or automa newly selected pieces.  

In an embodiment of the invention, it has proven to be Proven partially if facilities for setting the mentioned time interval are provided.

The invention is described below with reference to drawings explained in more detail, it being noted that ent speaking parts in all drawing figures the same reference numerals.

Show it:

Figure 1 is a front view of an automatic CD player with a device according to the invention.

FIG. 2 shows a top view of the keypad of the device according to FIG. 1;

Fig. 3 is a block diagram of a device according to the invention for an automatic CD player;

Fig. 4 is a schematic diagram of the ele ments of the mechanical title display devices, the digital display unit and the keypad part of the device for a music box according to Fig. 1;

Figs. 5 and 6 is a schematic diagram of the cen tral control computer of erfindungsge MAESSEN means;

FIGS. 7 and 8 is a schematic diagram of the mecha nik-control part of the device according to the invention and

Fig. 9 is a flowchart to illustrate the operation of the device according to the invention when determining skip errors and disc errors of the CDs.

Specifically, FIG 1 and 2 a jukebox -. Shortly referred to as a music box 10 denotes -, in particular sondere for playing so-called Compact Discs relation ship as CDs, according to a preferred embodiment of the invention, or a one inventive device for such jukebox 10, which is a Housing or a cabinet 12 , on the front of which a slot 14 for inserting coins and a further slot 16 are provided for entering banknotes.

A title display field 18 is located in a recess 20 on the front of the cabinet 12 behind a window 22 or a glass pane and serves to record title lists 24 , 26 comprising several pages or panels 28 , respectively. Each panel 28 can hold three CD cases 30 , 32 and 34 , each of which includes an image portion 36 and an alphanumeric text portion 38 . (The turning over of the title lists 24 , 26 and the associated parts of the control system are the subject of a further application by the applicant.)

At the front of the cabinet 12 , a key field 44 and a display 46 are also provided, which can show the current piece of music, the selection made, the remaining options and / or the current operating mode of the music box, as can be seen below is explained in more detail. The keypad 44 includes keys 40 and 42 , which can be pressed by a potential customer to change the displayed title by "flipping" of the boards 28 of the title lists 24 , 26 forwards or backwards.

The keypad 44 also includes a number of keys 152 a to 152 j, which correspond to the numbers 0 to 9. A reset key 156 and a key 154 , through which the most popular title can be called, complete the arrangement.

Fig. 3 shows a block diagram of the control system for the title display according to the invention, wherein the control system comprises a keypad 120 , which is used to enter information in a digital display system 122 . This digital display system 122 provides information to and receives information from the title display unit 124 .

A coin mechanism 126 , which can be provided in the United States, for example, for 5 and 10 cent coins, for quarter dollar pieces and for half dollar pieces, provides money input information or payment information or information about the amount deposited to a central control computer 130 of the control system.

A banknote acceptance unit 124 , which can be provided, for example, for accepting one-dollar and five-dollar bills, delivers corresponding payment or credit information to the central control computer 130 . The computer 130 adds the payment information of the coin mechanism 126 and the acceptance unit 128 in a known manner, a certain amount being deducted from this "credit" when a selected piece of music is played.

The digital display unit 122 supplies certain input information to the central control computer and receives from it information on the basis of which it provides various displays, for example with regard to the piece of music currently running, or other information, as will be described in more detail below.

The central control computer 130 is assigned a delete switch 132 , which can be actuated to cancel a selected title, and an internally accessible service switch 134 , which can be closed, in order to switch the jukebox to the "maintenance" operating mode. The reasons for this are also explained in more detail.

The central control computer 130 supplies the necessary input signals for the mechanical control part 136 of the control system so that the music box operates in the desired manner. The mechanical control part 136 is connected to the CD player 138 , which comprises the laser mechanism and the CD decoder, via lines 140 and 142 .

In addition to its connection to the CD player 138, the mechanical control part 136 delivers the necessary signals for various other units of the music box, for example for a piece of music counter 144 , for a money counter 146 , for a transport motor 148 and for a magazine motor 150 .

According to FIG. 4 includes the keypad 120, which is generally designated in Fig. 1 by the reference numeral 44, a Ta ste 40 which can be operated to the boards 28 "turn over" forward and a key 42, can be which actuates to "turn over" the boards to the rear. In addition, the keypad 120 includes the already mentioned Zif remote buttons 152 a to 152 j, which are operated during normal operation of the device to make a selection and which are operated in the "maintenance" mode of the jukebox in a given order. Finally, the switches of the keypad 120 include the switch 154 for calling up the most popular piece of music and the reset button 156 . In the "Maintenance" operating mode, two internal switches 158 and 160 can be operated in order to "turn over" the pages forwards or backwards.

The title display unit 124 includes a drive motor 88 , an advance switch 108 and a limit switch 110 .

With a title scoreboard unit 124 , which is shown as part of the digital display unit 122 , a drive motor 162 is connected. As will be explained in more detail below, the control circuit "knows" the position and drive direction of the display system when the system is working, so that the correct control is achieved.

The visual or optical display unit 164 can, for example, be a vacuum fluorescent display of any known type, which is suitable for providing the desired display to the required extent. The display unit 164 is assigned a display driver 166 . A dual receiver 168 couples the display data in a known manner to driver 166 , which actuates the display unit to provide a visible display. The type of coupling between the digital display part 122 and the central control computer 130 is indicated on the right side of FIG. 4.

As shown in Fig. 4 and 6 is clear the connection between the digital display part 122 and the central control computer 130 is depicted in the manner described below. Several channels, which are designated by the reference numerals 170 a, 170 b, 170 c and 170 d, correspond to the output signals "display of TX data" and "display of time" and lead to a connecting element 172 ( FIG. 6). A first group of conductors which are assigned to the logical reference potential, a DC voltage of +8 V, a DC voltage of +28 V or the reference potential, and a second group of conductors 176 a to 176 d which correspond to the keypad reset lines 0 to 3 are connected in the order shown to a connection element 178 ( FIG. 6). Conductor 180 a to 180 h, on which there are corresponding scanning signals 1 to 5 and 8 to 10, lead to a connection element 182 ( FIG. 6). Conductors 184 a to 184 e, which are assigned to the scanning signal "0" for the coin switch and the coin switch reset signals 0 to 3, are connected to a connecting element 186 according to FIG. 6.

As shown in Fig. 5 and 6 show, the central control computation ner 130 comprises a microprocessor 188th The address output ports A0 to A7 of the microprocessor 188 are connected to a driver 190 which leads to an address bus 192 of the system. In a corresponding manner, the output ports A8 to A15 of the microprocessor 188 are connected to the inputs of a second driver 194 , which is also connected to the address bus 192 . For example, drivers 190 and 194 may be 74HCT244 ICs. The address bus 192 provides input data for an erasable and programmable memory EPROM 196 (for example of the type 27512) and a memory with random access RAM 198 (for example of the type 6264). A third driver 200 (for example also a 74HCT244) supplies two further address bits and command signals to a memory decoding matrix 202 (for example of the type 18P8) and a calendar clock 204 (for example of the type 72421).

Depending on their actuation, the EPROM 196 and the RAM 198 can output data on a data bus 206 in a known manner. Another driver 208 (for example of the 74HCT245 type) couples the data bus 206 to the connections or terminals D0 to D7 of the microprocessor 188 . The data bus 206 is connected to the connections D0 to D7 each of two flip-flops 208 and 210 (for example of the 74LS374 type) which are shown in FIG. 6. In addition, the data bus 206 is connected to the connections 1 Y1 to 1 Y4 and 2 Y1 to 2 Y4 of a buffer 212 (for example of the 74HC244 type). A conductor 214 connects the output 1 to the clock input of the flip-flop 208 , which provides output signals 8 to 10 for the connection element 182 .

Another conductor 216 connects the output 0 of the decoder 202 to the clock input of the flip-flop 210 , which supplies the associated connection element 182 with scanning signals 0 to 7.

A conductor 218 connects the connector of decoder 202 to buffer 212 , which is associated with connectors 178 and 186 .

Conductors 222 , 224 and 226 connect the TXS port, the RXS port and the CKS port of the microprocessor 188 to the inputs D11, D12 and R01 of a circuit 228 (for example of the type DS8923), which is assigned to the connection element 172 to control the title display. A conductor 230 ver connects a connector 282 of the buffer 212 to the input R02 of the circuit 228 to cause the display to operate in the "Caution" mode.

The CD player 138 used in the device according to the invention can be of any known type. The CD player 138 includes a laser mechanism for reading the CD and a decoder and servo processor, which is connected to the mechanical control part 136 via a serial two-wire bus, which is designated by the reference numerals 140 and 142 be. This bus is used to transmit the signals CDM Start, CDM Stop and CD data.

According to Fig. 7 and 8, the mechanism control part comprises the servo-processor communication parts and Systemkommunikationstei le and comprises a microprocessor 232. In a known manner, the CD player 138 delivers a signal CDM Start, which is fed to a line 234 . This signal is applied to the Q input of a dual JK flip-flop 236 . Correspondingly, the CD player 138 delivers a signal CDM Stop, which is applied via a line 238 to the connection Q of a second JK flip-flop 240 . The clock signal on line 242 is applied to the clock inputs of a second pair of JK flip-flops 244 and 246 . A connection element 248 connects the SCL line 140 to the common connection of a pair of voltage dividing resistors 250 and 252 , which lie between the connection 254 (+5 V) and the output of a buffer 256 , the input of which is connected to the logic reference voltage and whose control input is connected to the Q input of flip-flop 244 . The flip-flops 236 , 240 , 244 and 246 can be of any suitable type (for example of the type 74HCT73).

The terminal 248 also connects the SDA line 142 to a common terminal of a pair of voltage divider resistors 258 , 260 , which lie between the terminal 254 and the input of a buffer 262 , the output of which ver ver with the common JK terminals of the flip-flop 246 is bound and also with a CDM data line 264 . The control input of buffer 262 is connected to logic reference potential. A buffer 268 , the control input of which is connected to a logic reference potential, couples the output of the buffer 250 to the time line 242 . A two-input NAND gate 270 , the inputs of which are interconnected, connects the output of buffer 266 to the clock input of flip-flop 240 .

A CDM BIT TRAPPED line 272 connects the Q output of flip-flop 244 to port 11 of microprocessor 232 . A CDM Data RX line 274 connects the Q output of flip-flop 246 to port P10 of microprocessor 152 . Furthermore, a CDM-Data-TX line 276 is connected to the lock input of a buffer 278 , the input of which is connected to logic reference potential and the output of which is connected to the input of the buffer 262 .

An IIC EN line 280 connects port P20 of microprocessor 232 to the clock inputs of flip-flops 236 , 240 , 244 and 246 .

A connector 248 connects an RC5 line 282 to the common input terminals of a two-input NAND gate 284 , the output of which is connected to the common input terminals of a two-input NAND gate 286 to provide the RC5 signal on line 288 to deliver.

A transceiver unit 290 (for example of the type 75176) connects input elements 292 and 294 with a line 296 over which the system Tx / Rx signal runs, with a line 298 over which a system Rx signal runs and with a line 300 over which a system Tx signal runs.

Lines 242 , 264 and 288 supply the input signals D0 to D2 for a DATA SEL module 302 with eight inputs. A DIP switch arrangement 304 for path selection supplies the input signals D5 to D7 for module 302 . The Y output and the inputs A, B and C of the block 302 are connected to the ports P13, P15, P16 and P17 of the microprocessor 232 .

A device for handling the compact disks and for moving them from the storage magazine to the CD player will not be described in detail here, since one of the devices in itself is not the subject of the invention. However, this device provides a plate hold down signal on line 306 , an erase signal on line 308 , an "outer cam" signal on line 310 , an "inner cam" signal on line 312 , an advance signal on line 314 and a return signal on line 316 . These signals form the input signals at the inputs D0 to D5 of a further, eight-input DATA SEL circuit 318 , their Y outputs and their inputs A, B and C with the ports P12, P15, P16 and P17 of the microprocessor 232 are connected.

The ports A0 / D0 to A7 / D / of the microprocessor 232 supply a data bus 320 . Ports A8 to A15 provide signals for an address bus 322 .

In addition to the signals mentioned above, the operating equipment of the jukebox and its auxiliary devices generate a money counter signal on a line 324 , a game counter signal on a line 328 , a magazine motor signal on a line 330 , a transport motor signal on a line 332 and a locking magnet signal on a line 334 . These signals are at the inputs Q0 to Q7 of an edge-triggered, eight-fold flip-flop 336 , for example of the 74LS374 type. The ports D0 to D7 of the block 336 are coupled to the data bus 320 .

The ports D0 to D7 of an eight-way buffer 338 of the D type are connected to the data bus 320 . Ports Q0 through Q7 of buffer 338 provide address bits A0 through A7 on address bus 322 . In this connection, it should be remembered that bits A8 to A15 for address bus 322 are supplied by microprocessor 232 .

An EPROM 340 , which responds to the address bits A0 to A14, supplies compensation signals O0 to O7 to the data bus 320 .

A RAM 342 , which responds to the address bits A0 to A12, has input / output ports I / O0 to I / O7, which are coupled to the data bus 320 .

A line 344 connects the AS port of microprocessor 152 to the G port of buffer 338 . An inverter 346 connects the R / W line 347 of the microprocessor 232 to the DE port of the EPROM 340 . A pair of inverters 348 and 350 connected in series connect the E-port 352 of the microprocessor 232 to the one input terminal of a two-input NAND gate 354 , at whose other input the address bit A15 is present. The output of NAND gate 354 is connected to a CE input of EPROM 340 . A decoder 356 with three input and eight output lines (for example of the 74HCT138 type) decodes the address bits A13 to A15 and supplies eight output signals Y0 to Y7. The signal Y1 of the decoder 356 is fed via an inverter 358 to the one input of a two-input NAND gate 360 , the other input signal of which is provided by the inverter 350 . The output of NAND gate 360 is connected to the CS port of RAM 342 . A NAND gate 362 , whose one input signal is generated by inverter 346 and whose other input signal is supplied via line 352 , has an output which is connected to the WE input port of RAM 342 . An inverter 364 couples the Y2 signal of decoder 356 to an input of a two-input NAND gate 366 , the other input signal of which is provided via line 352 . The NAND gate 366 supplies the signals at the clock input CLK of the flip-flop circuit 336 .

As is known, when manufacturing a CD or Compact disk in a recording studio vibrating a analogue original sound sampled at regular intervals continuous The measured values obtained in the course of a Quantization step using an analog / digital Converter into a series of binary values or bi implemented när numbers. These numbers are in an impulse train coded and processed in a multiplexer, and it he follows the addition of the cross-nested Reed salo mon codes. Then the CD subcode is inserted to  to find and program the information chen. The subcode indicates how many titles respectively Pieces are available on the CD as well as the start time and the End time as well as the elapsed time for each piece. The Elapsed time shows which point on the CD is currently is "read out".

The calendar or real-time clock 204 of the central control computer 130 provides information about the day of the week and the time of day with a 24-hour display. An output signal 0200 means 2.00 a.m., while an output signal 1400 means 2.00 a.m. In the arrangement under consideration, a counting or time measurement process begins as a function of a clock interrupt signal from the microprocessor 232 as a function of the title start time display of the decoder of the CD player 138 . The time elapsed since the interrupt signal is then compared to an indication of the elapsed time from CD player 138 . If the comparison shows a deviation of ± 1 s, the display shows that a "skip" occurred when playing the CD. For a more detailed explanation, it is pointed out that the CD is not read in real time. The laser captures the digital music information simultaneously with the subcode information. The digital music information is stored and then converted into analog information for playback. When determining the "skip" (skip), the mechanical control part asks the decoder where it is in the course of playing a selected piece. If the answer to this is that the system is at 8 while the value 5 should be based on the time that has passed since the interrupt signal for the microprocessor 232 , a "skip" is indicated. Similarly, at a later time when the system indicates that it is at 9 while it should be at 11, this situation is recorded as a second "skip".

The general type of communication between a key pad processor, such as that used here for the automatic jukebox, and the servo processor, which is part of the CD player 138 , is known and will not be described in detail here. In general, communication is via a set of high level signals which the servo processor converts into procedures and signals for the servo system and decoder and then reports its status back to the keypad processor. The servo processor stores the subcode data from the decoder and, if not attached to the controller of the pickup, transmits the subcode to the keypad processor.

Fig. 9 shows a flowchart of the operation of the control system according to the invention when detecting the "skip gene" and when evaluating and displaying the relevant information. If a piece or title is selected, then a CD, which has the selected piece on one of its sound tracks, is handed over from the storage magazine to the CD player. The CD is then brought up to the desired speed and its table of contents is read by the decoder. The mechanical control part requests the data of the table of content (TOC) from the CD player. Next, a command goes to the CD player to play the selected track. The status or subcode is read from the CD player and a millisecond timer is synchronized with the time reported by the CD player. When synchronization is achieved, the status code is continuously read from the CD player. It is determined whether or not the elapsed time recorded by the CD player differs from the elapsed time since the interrupt signal by more than 1 s. If this is not the case, a determination is subsequently made as to whether the period of time for the selected piece has elapsed or not. If this is not the case, the system continues to compare the elapsed time determined by the CD player with the elapsed time since the interrupt until the selected piece is over. When the track is over, a stop command is given to the CD player and the system continues in its normal mode.

If it is found in the time comparison that the elapsed time from the CD player elapsed time since the interrupt decides, then it is determined whether the skip time equal to or greater than a set cancellation relation approximate deletion time. If so, the Error condition reported to the central control computer, to record it and it will send a stop command to the Given CD player, so that the selection made au is canceled or deleted automatically. The The system then returns to its normal operating state return

If, following the finding that the dated CD player determined time by more than 1 s from the  time elapsed from the interrupt is that the skip time is shorter than the ge set deletion time, then becomes the content of the skip tough lers a "1" added, and it is determined whether the Counter reading of the skip counter equal to a set one The counter reading is the same. If so, will the fulfillment of this condition to the central tax computer reported, and a stop command is sent to the CD Players given to delete the selection in question about to cancel. If the meter reading is not yet is equal to the set counter reading, the In terrupt timer resynchronized and the system returns back to the check whether the gemel by the CD player elapsed time elapsed from the time since the interrupt elapsed time is more than 1 s different.

As explained above, the system according to the invention is equipped with devices which allow an operator for the music box to see the CD interference conditions which have previously been determined and recorded. For this purpose, the operator closes the service switch 134 , whereupon the display 46 provides the display operating mode “maintenance” or “service”. When this is done, the digits 8 and 6 are entered by pressing pushbuttons 152 i and 152 g. The display unit 46 then provides the display "CD conditions". The most popular track button 154 is now operated. If no (fault) conditions are stored, the display unit displays "No (fault) conditions" in view of this fact.

If, in fact, some disturbance conditions have been recorded, the display unit, when the button 154 is pressed, supplies the display SEL, which is followed by a first two-digit number, which is the number of the CD and which is followed by a second two-digit number , which is the track or track number. In addition, the identifier OCC is displayed, which stands for the number of events (occurences) and is followed by a two-digit number which indicates the number of events. The operator then holds the reset button 156 while pressing the button 152 j, which corresponds to the number 9. When this has been done, the display unit shows the password "cancel" (deleted, canceled, not executed), followed by a two-digit number which indicates the number of seconds (set time for cancellation) and the note "skip "(skipped) followed by a two-digit number that indicates how often skipped. While the reset key 156 is pressed and held again, the key 152 corresponding to the number 9 is pressed again, whereupon the display unit 36 supplies the display "time", which is followed by two two-digit numbers which are followed by a dot are separated - this shows the time of the last fault - and a second display with two two-digit numbers separated by a line. This display shows the month and day of the last fault.

If the reset button 156 is held in the pressed state and if the button 152 d corresponding to the number 3 is also pressed, the interference conditions for the next CD or the next track can be displayed or seen. If the reset button 156 is held in the pressed state and if the button 152 c corresponding to the number 2 is pressed, the preceding fault conditions can be displayed or viewed.

These steps are carried out as often as required is necessary to the conditions of all CDs in the jukebox check. After reviewing the various fault conditions the operator can then clean the CDs in question or replace if necessary.

Regarding the CD numbers and the title respectively Track numbers occur in the display discussed above no numbers ending with 00. If now the displayed Number of a selected piece ends with 00, then meaning This means that the CD player has the table of contents of the CD could not read correctly. In such a case the possibility that the CD is inserted with the wrong side was dirty, damaged, not initialized is or is missing.

In the display, the display of the CD number and the number immediately following the selected piece, the number represents which follows the "cancel" indicator is the total time in which was a selected piece "off" when it was deleted (canceled). For example, if 12 is displayed, then the selected pieces jump forward by 12 s or behind. The maximum skip time before canceling deletion can be described in the following Way to be set.

The second number after the display "skip" shows how often the CD was skipped by more than 1 s. The allowable skip limit can be set in the manner described below. It can easily be seen that when a fault condition is indicated on the basis of this parameter, the number is always equal to the programmed limit value. The total permitted skip time before deletion and the total number of jumps that are permitted before deletion can be set or set during the installation part of the program. First, switch 134 is closed to place the device in the service mode. Then the keys 152 d and 152 g are pressed, which correspond to the numbers 3 and 6, respectively. When this is done, the new number is entered and the most popular track key 154 is pressed.

When setting the deletion time with the control system in the "Maintenance" operating mode, the keys 152 d and 152 h are pressed. Then the new number is entered and the key 154 is pressed.

The CD disturbance conditions that have been recorded in the memory remain there until they are deleted in the following manner. If the control system is in the "Maintenance" mode and the jukebox is set to the "Maintenance" mode, the display unit provides the "service mode" display. If the key 152 i corresponding to the number 8 is then pressed, the display shows "status". When the 152 h key corresponding to number 7 is pressed, "clear conditions" is displayed. Subsequently, the button 154 for the most popular recording is pressed and the display "clear conditions" flashes and then reappears. In this way, all CD interference conditions will be removed from the memory.

As stated above, the device according to the invention has, in addition to the possibility of detecting, recording and displaying CD interference conditions, a number of other important possibilities. One of these options is the option to delete the selection of pieces still to be played after an interval in which the music box is switched off. The importance of this possibility arises without further ado when one thinks of the fact that at the point in time when a pub is closed, in which the jukebox is located, there are still some pieces that have already been selected but not yet played in the memory. The owner will have the understandable wish that the stored data on the selected pieces be automatically deleted if a certain amount of time has passed after the music box was switched off. For example, a time interval of 4 hours can be selected for this time. In the control system under consideration, this possibility can be activated and deactivated by holding the reset key 156 pressed and pressing the key 152 j corresponding to the number 9. If the "automatic deletion" option has been switched on or off, the change can be saved by pressing the button 154 . It is clear that these operations take place while the system is in the "maintenance" mode.

It is also possible to change the time interval for the deletion process. The change for the time interval for the automatic deletion of remaining pieces is made in the maintenance mode by pressing the 152 g, 152 j and 152 b buttons in this order, by entering a new time and then pressing the 154 button.

The possibility of entering toll-free times allows the operator to program such that the jukebox can be operated free of charge on certain days and at certain times of the day. In particular, this is done by comparing the times set in the memory with the times displayed by the real-time clock 204 . When the control system is in the "Maintenance" mode, the "toll-free times" option can be switched on or off by pressing keys 152 f and 152 e, which correspond to the numbers 5 and 4, in succession. When the reset button 156 is held down, the button 152 j can be pressed to turn the toll-free schedule on or off. After the schedule is turned on or off, the button 154 can be pressed to save the change.

By pressing 152 f twice and holding down the reset key 156 and pressing the 152 j key, ge-free operation can be switched off immediately without having to wait for the start or end time. Pressing the most popular recording button 154 saves the change.

To set the start time for a fee-free period, the corresponding to the numbers 5 and 6 keys 152 f and 152 g as day buttons are pressed one after the other. The time of day is then entered according to the 24-hour display. To set the end time, the keys 152 s and 152 h are pressed in succession, whereupon the time is entered again in accordance with a 24-hour display.

The days of the week on which a toll-free time is switched on can be set by pressing keys 152 f and 152 i in succession. The reset button 146 is held down and either the 152 c or 152 d button is pressed to effect day-to-day advancement. The display unit provides the display SMTWTFS and the display or the symbol for the currently selected weekday flashes. Under these conditions, the selected day is switched on or off by holding the reset button 156 down and pressing the button 152 j. Key 154 is pressed to save each selection made.

For example, if the operator wants to set a free time from 5:00 to 6:00 p.m. on Mondays, Wednesdays and Fridays, the following operations are required. The possibility of time-limited, fee-free times is set to ON. The "toll free time" state is set to OFF. The start time is set to 17:00 and the end time is set to 18:00 and M, W and F are set for the days on which this time is to apply. As stated above, the "toll free time" state then begins at the time when the start time matches the time generated by real time clock 204 and when the day of the week matches the displayed day of the week. The "toll-free time" state is switched off when the set end time corresponds to the time indicated by the real-time clock 204 .

In addition to the possibilities described above, the device according to the invention allows the "AUTOPLAY" operating mode, in which the music box automatically plays, wherein different operating days and times of the day as well as certain pieces can be selected for this operating mode, namely for the time between selected by a customer Pieces. To set the various parameters for the "AUTOPLAY" operating mode, the 152 e key corresponding to the number 4 is first pressed. If the next key 152 a is pressed, which corresponds to the number 0, the "AUTOPLAY" mode can be switched on or off by holding the reset key 156 and pressing the key 152 j to toggle between these two options to switch here. The selected option or option is saved by pressing the button 154 .

To set the waiting time between pieces played in the "AUTOPLAY" mode, the buttons 152 e and 152 b are pressed in succession. The number of minutes between the automatically played pieces is then keyed in and the key 154 is then pressed.

The time of day for the start of the "AUTOPLAY" operating mode is entered by pressing the 152 e and 152 c keys in succession. The time is then entered as a 24-hour time. This is accomplished by entering the hour and pressing button 154 , then entering the minute and then pressing button 154 again for the most popular selection.

The end or end time for the "AUTOPLAY" operating mode is set in a similar way to the start time by first pressing the 152 e and 152 d keys and then entering the time in 24-hour format.

To set the days of the week for the "AUTO PLAY" operating mode, the 152 e button is pressed twice. Thereafter, the reset button 156 is held down, and either the 152 c or the 152 d key is pressed to cause a day-to-day advance. The display again shows the symbols SMTWTFS, the symbol for the day just selected flashing. This day can be switched on or off by holding the reset button 156 and pressing the button 152 j. To save changes, the button 154 is pressed again.

The individual pieces that are played in the course of the "AUTOPLAY" operating mode can be selected by pressing keys 152 e and 152 f in succession. That is, the identification of the selected pieces is entered after pressing these buttons.

A successive actuation of the 152 e and 152 g keys deletes the programming for all selected pieces when the 154 key is pressed.

The "AUTOPLAY" operating mode can be changed or ended immediately without waiting for the start or end time of the day of the week if the 152 e and 152 h keys are pressed in succession and then the reset key 156 is held down and pressed by pressing the 152 j key toggle between switching on and off. Key 154 is pressed again to save the changes entered.

It is understood that the different conditions for the operating mode "AUTOPLAY" described above were all discontinued when the system is in the "Maintenance" operating mode.

The device according to the invention also allows reading out the popularity of the various CDs and the individual pieces. When the system is in the "Maintenance" mode, the 152 b and 152 h buttons are pressed and the display unit shows the number of the most popular CD, followed by the number indicating the number of times the CD was played . This data can be displayed for the second most played CD when the reset button 156 is held down and when the button 152 d is pressed. In this way, the display data for the CDs from the most popular to the least popular can be displayed with the aid of the display unit. If the reset button 156 is held down and the button 152 c is pressed, the ranking follows in the direction of the most popular CD. Furthermore, the popularity of any CD can be obtained by entering the CD number.

In contrast to the display of the most popular CD, the device according to the invention provides an indication of the least popular CD when the keys 152 b and 152 i are pressed in succession. In this case, the number of the least popular CD and the number of plays are displayed. By holding down the reset button and pressing the button assigned to number 2, the less popular CDs are displayed in ascending order. Again it is possible to display the popularity of a specific CD by entering the CD number.

In addition to displaying the most popular and least popular CD, the device according to the invention allows the display of the most popular track. This display is obtained with the system operating in the mode of maintenance by pressing keys 152 b and 152 j in succession, the display unit displaying the number of the track followed by the number of plays of this track by means of a four-digit display. By holding down the reset button 156 and pressing the button 152 d, the system displays the data starting with the most popular track in descending order. When the back button 156 is held down and the button 152 c is pressed, the display moves up toward the most popular track.

From the above description it is clear that the Objects of the invention have been achieved. It will be an interior device for an automatic compact disc player create which is more informative and complex than the be known tax systems. Here is the invention Device specially for use in connection with a Suitable for CD players. The device according to the invention  will automatically nullify a chosen piece if for this a predetermined number of skipping was found. The item selection is also deleted or canceled if a given maxima le skip time has passed. With the fiction All skipping is also a regular feature and deletions or cancellations for one later check ge on the display unit of the music box saves. The device according to the invention comprises the Possibility of operating mode autoplay, which for certain Days of the week, hours of the day, intervals between automati play operations and selected or random automatic shutdowns can be selected. Further the "free play" mode is enabled light, setting for certain days of the week and Times of day. In addition, are already elected pieces, but not yet played, with the expiration of a predetermined time interval after switching off the music box deleted.

From the above explanation it is also clear that certain features and sub-combinations are also advantageous can be used if other characteristics and Sub-combinations are not realized. Also recognizes one knows that the expert has numerous details Opportunities for changes or additions to bids stand without the basic idea of the invention would have to leave.

Claims (2)

1. Means for an automatic sound player for playing various pieces and with on and off switching devices, characterized by selection devices for selecting certain pieces, by recording devices for recording the identifications of the selected pieces, by erasing devices for deleting the stored identifications if the relevant pieces be played, and by time-dependent working devices which, depending on the elapse of a predetermined time interval after switching off the player, delete the stored identifications for those pieces which have been selected but not yet played. 2. Device according to claim 1, characterized in that means for setting the time interval are provided.