JPH0473234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for controlling two digital disc players.

BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, when controlling the operation of two CD players that play back so-called CDs (compact discs) on which digitized audio signals such as music are recorded, two A control device is connected to each of the players so that each player can be controlled independently. As a result, the overall system configuration becomes complicated, operations become complicated and erroneous operations are likely to occur, and a large space is required.

In order to solve this problem, the present applicant previously proposed a ``digital disk player control device'' that can commonly control a plurality of players, such as in Japanese Patent Application No. 58-188841. This control device is capable of connecting a plurality of players, selects two more players from the plurality of players, and alternately performs playback and cueing of the players. That is, while one player is playing, the other player is cued and put on standby, and the play button is pressed after the one player finishes playing.
The player in the standby state is played back. While this playback is being performed, it is possible to again cue the player whose playback has ended.

In this control device, cueing and other controls are always performed for only one player, and a selection button is provided for selecting the player to be controlled. The player not selected by this selection button is always in playback mode or is stopped. For the player selected by the selection button, the cue position can be determined, the cue position can be confirmed on the monitor, and other controls can be performed using the operation buttons and operation knobs arranged on the operation panel. Also, regarding this control, the position of the backup on the disk and other necessary displays are performed.

When controlling the player selected by the selection button in this way, if you want to control the other player, first press the selection button to make the other player controllable. It is necessary to perform the desired control.

As described above, since the control device has to press a selection button every time the player to be controlled is changed, the following problems have arisen in terms of actual usability. In other words, if player B is cued up while player A is playing out of two players A and B, and player B is set to standby, playback of player A is stopped and player B is may start playing. In that case, first, press the selection button to bring player A into a controllable state, and then press the stop button to stop player A. Next, the user presses the selection button again to put player B in a controllable state, and then presses the play button to put player B into playback mode.

In this way, when one player is in standby mode, if you want to stop the playback of the other player and start playback of the one player mentioned above,
It is necessary to operate a plurality of operation buttons four times in a predetermined order. Therefore, erroneous operations are likely to occur, and the operation takes a long time. If the operation takes a long time, problems such as time delays may occur, especially in broadcast programs.

OBJECT OF THE INVENTION The present invention solves the above-mentioned problems in a control device that commonly controls two CD players.

SUMMARY OF THE INVENTION The present invention provides a replacement means for replacing the player to be played, and by operating the replacement means and the playback means, the player that is currently playing is stopped and the player that is in standby mode is stopped. This is what I decided to do. This makes it possible to change the player for playback with a single operation without having to perform complicated operations on operation buttons.

Embodiment In this embodiment, two CD players are connected to the control device, and one of them is used for playback operation, while the other is used for cueing operation. Such a function is suitable for use when, for example, in a music program at a broadcasting station, two players are used to cue one of the players while the other is being played.

Furthermore, in this embodiment, it is possible to program in advance the beginning of the songs to be played on the discs set in the two CD players and the order in which each player plays them.

FIG. 1 shows an operation panel surface 2 of a control device 1. As shown in FIG.

On the side surface of the head of the control device 1, there are provided a headphone connection section 3 for monitoring a reproduced signal, a monitor sound volume adjustment knob 4, a power switch 5, and the like. Further, a power cord 6 is connected to the rear side surface of the control device 1, and connection portions 7 ₁ and 7 ₂ to which two CD players are connected are provided.

Next, in the case where the first and second players are connected to the connection parts 7 ₁ and 7 ₂ and controlled, the operating procedures of the respective operation buttons and operation knobs arranged on the operation panel surface 2 will be explained.

First, in order to select one of the two players and cue it, press the first player set button 9 or the second player set button 9.
Press the player set button 10. When the first player set button 9 is pressed, the number 1 player connected to the connection section ₇₁ is called up and becomes controllable. At this time, the number "1" is displayed on the display section 12, and if a disc is set in the player, the display lamp 16 is lit. When the second player set button 10 is pressed, the second player connected to the connection section ₇₂ is called up and becomes controllable. At this time, the number "2" is displayed on the display unit 13, and
If a disc is set in the player, the display lamp 19 lights up.

As described above, by pressing the set button 9 or 10, only one player can be controlled at any time, and only the display regarding this controllable player is displayed.

Next, with player No. 2 set, for example, the number of the song on the disc is specified using the numeric keypad 11. This brings the pickup to the beginning of the specified song. At this time, the disk is rotating, and the beginning of the song that was cued is played back. Therefore, by listening to the reproduced sound through the headphone, it is possible to know that cueing has been performed.

If you want to locate the cue with higher accuracy, after cueing as described above using the numeric keypad 11, press the manual button 24, then turn the search dial knob 25.
Turning the. This allows the cue position to be adjusted in units of frames on the disk. Therefore, for example, it is possible to cue to the position immediately before the sound of a specified song starts. For compact discs, one second of the signal recorded on the track is
A frame signal is recorded as 75 frames.

If the user wants to cue a song in the middle of a song specified using the numeric keypad 11, the user presses the index button 26 and then uses the numeric keypad 11 to specify an index number corresponding to the desired cueing position of the specified song. On a compact disc, 99 index numbers are assigned from the beginning to the end of a song, and the content corresponding to each number is displayed on the jacket, so you can easily find the index at the desired cue position of the song. You can know the number. When an index number is specified, the pickup moves to that position. In this case, the manual button 2
4 and the knob 25, the cueing position can be further finely adjusted. It should be noted that the push button 27 is a button for advancing the number of a song specified by the numeric keypad 11 by one, and the push button 28 is a button for returning the number of the song specified by the numeric keypad by one.

After confirming through the headphone that cueing has been completed as described above, by pressing the standby button 22, the second player enters the standby state with cueing completed, and this state is indicated by the indicator lamp 18. is displayed.

If you want to check the cue position in this standby state, press the monitor button 23 and the designated song will be played from the cue position. After confirming the reproduced sound sufficiently through the headphone, the user presses the standby button 22 again to stop the reproduction, and the pickup returns to the cue position and enters the standby state.

When the play button 21 is pressed in this state, the second player enters the playback mode, and the playback signal, in the case of a broadcast program, is put on the air and monitored by the headphone. At this time, the indicator lamp 18 goes out and the indicator lamp 17 lights up, indicating that the vehicle is on air. Further, as the disc is played, the currently played track number, index number, time (minutes, seconds, frames), etc. are displayed on the display sections 29, 30, 31, 32, and 33, respectively. In addition, the display lamp 34 lights up to indicate that the displays on the display sections 29 to 33 are currently playing. Note that the displays on the display sections 29 to 33 are as follows:
This is also performed during the above-mentioned cueing operation and pause, in which case the display lamp 36 or 37 lights up. Further, when the above-mentioned index search is being performed, the display lamp 40 lights up. If you want to know the remaining time during playback, press the remaining time table button 38 and press the display lamp 3.
5 lights up and the remaining time is displayed.
Further, by pressing the stop button 20, the above-mentioned reproduction is stopped.

To cue the first player during playback of the second player, press the player set button 9. As a result, the first player becomes in a controllable state, and the display section 12 and the display lamp 16 light up. At the same time, the display sections 29 to 33 are switched to display regarding the number 1 player, and the display lamp 36
lights up. Note that at this time, the second player is continuing to play, and the display lamp 17 is lit.

In this state, the first player is cued up in the same manner as described above. If you want to know the remaining time of the second player while this cue is being performed, press the ALTERNATELY, DISPLAY button 39.
Press. This allows the headphone to monitor the playback sound of the second player, and
Display sections 29 to 33 display the remaining time of the second player. Next, by releasing the press of the alternation button 39, the number 1 player becomes controllable again, and cueing continues. When the cueing is completed, when the standby button 22 is pressed, the display lamp 15 lights up and the machine enters the standby state. Then, by pressing the play button 21 after the playback of the second player or after the end of the announcement etc.
The first player is put into play mode. At this time, the display lamp 15 goes out and the display lamp 14 lights up.

When the No. 1 player is in the above standby state and the No. 2 player is playing, if you want to stop the No. 2 player's playback and immediately start the No. 1 player's playback, the above While pressing the change button 39, press the play button 21. As a result, the second player is stopped and the first player is played from the cued position.
At this time, the display lamp 17 goes out and the display lamp 14
lights up. In this state, the No. 1 player can continue to control the player from the standby state, and the indicator lamp 12 continues to be lit.

If you want to cue up player No. 2 during playback of player No. 1, by pressing the player set button 10, you can put player No. 2 in a controllable state and cue it.

FIG. 2 shows a schematic circuit connection for performing the above-described operations of the control device 1, and parts corresponding to those in FIG. 1 are given the same reference numerals.

The control device 1 is numbered #1 to #2.
CD players are connected via connection sections 7 ₁ to 7 . Each player inputs and outputs various data to and from the serial I/O 45 via data interfaces 41 ₁ and 41 ₂ . These data are
Processed by CPU 46 and written to or read from RAM 47. ROM48 is CPU46
The data necessary for the arithmetic processing is stored.
The CPU 46 and other predetermined circuits are clock generator 4.
It is driven by the clock φ obtained from 9.

The signals are obtained from the signals obtained by operating the set buttons 9 and 10, the numeric keypad 11, and the matrix 50 regarding each push button including the change button 39. Signals based on the operations of the push buttons 20 to 24, 38, and 39 in FIG. 1 are processed through the input I/O 51 of each push button to form various signals necessary for cueing, playback, display, etc. , are respectively sent to predetermined circuits. Among these, the signal for display is display I/O5
2 to the display sections 12 and 13, and also to a display circuit 53 for driving other display sections and display lamps in FIG. In addition, 8
Circuits 5 and 86 relate to programs, which will be described later.

Reproduction signals obtained from each player are applied to the analog switch 54 as monitor signals via data interfaces 41 ₁ and 41 ₂ . This analog switch 54 is switched by a signal obtained from the display I/O 52. Display signals associated with the operations of the set buttons 9 and 10, the remaining time display button 38, and the change button 39 are used as the above-mentioned signals. A monitor signal from one of the players selected by the analog switch 54 is amplified by an amplifier 55 and applied to the headphone connection section 3.

Also, in connection with the control by the search dial knob 25, the search dial control 56 sends a signal indicating the pickup position to the display I/O 52.

FIG. 3 shows a flowchart of internal processing when the player currently playing is stopped and the player in standby mode is played by pressing the change button 39 and play button 21 described above.

In the figure, when the play button 21 is pressed and the currently set (controllable) player is not in the standby state, the current state is maintained. If the set player is in the standby state and only the play button 21 is pressed without pressing the replacement button 39, the player in the standby state is played. Even when the alternate button 39 is pressed together with the play button 21 and the other unset player is not being played, the player in the standby state is played. That is, in this case, pressing the replacement button 39 does not affect the operation. Alternate button 39 along with play button 21
If is pressed and the other unset player is playing, the playback is stopped and the player in the standby state starts playing.

Next, a case will be described in which the control device 1 performs program playback on two players. Control device 1
By using the program function, it is possible to play any songs on the discs set in each of the two players in any order.

In FIG. 1, when programming, the program button 70 is first pressed. This puts the device in program mode, clears the previous program contents stored in the memory, and waits for data input for a new program. At this time, the indicator lamp 82 is lit and the first indicator lamp 74 blinks to indicate that the first song is being programmed. Incidentally, the display lamps 74 to 81 numbered 1 to 8 indicate the program order and performance order of the songs to be programmed, and in this embodiment, eight songs can be programmed.

Next, press set button 9 or 10 to select the player you want to program, then select the desired song on the disc set in that player and cue the beginning of it. This cueing is performed in the same manner as the operation described above. When the cueing is completed and the confirmation is completed, the set button 71 is pressed. As a result, the program data is loaded into the memory, and the display lamp 74 changes from blinking to lighting, and furthermore, the second display lamp 75 starts blinking. Next, if the second song to be programmed is on the same disk as the first song, the cue for the second song will be proceeded as is. When the second song is on the disk of the other player, after selecting the player using the set button 9 or 10, the desired song on that disk is selected and its cue is searched. When eight programs are set by repeating the above operations, the control device 1 automatically exits the program mode. If a program with fewer than eight songs is to be programmed, the program mode can be exited by pressing the program button 70 again. At this time, the display lamps 74 to 81 light up for the number of programmed songs, and the display lamp 82 lights up.
disappears.

Next, the operation when executing the program will be explained.

First, after confirming that one or more of the display lamps 74 to 81 is lit, the automatic/manual selection push button 73 is pressed. As a result, the player corresponding to the first song is automatically cued up and placed in a standby state. For automatic performance, press button 73.
to the AUTO side, or push button 73 for manual operation.
Put it on the MANUAL side. In response to this, the display lamp 84 or 83 lights up. Next, by pressing the play button 21 or the monitor button 23, the player enters the playback mode. And when the first song is finished, the second song will be automatically played.
The player for the track is selected and the cue for the second track is selected. At this time, if it is the automatic performance, the second song will automatically start, and if it is the manual operation, it will be in a standby state and will start after waiting for the play button 21 or monitor button 23 to be operated. Furthermore, if the user wishes to proceed to the next song during the performance of a song, the player can automatically proceed to the next song by pressing the stop button 20. When all the steps of the program are completed as described above, the player enters the stop state.

In the circuit of FIG. 2, each of the push buttons 70 to 7 is
A signal resulting from the operation No. 3 is applied from the push button matrix 85 to the push button input I/O 51. The display circuit 86 also includes a display lamp 74 regarding the program.
-83 are displayed.

Effects of the Invention Since cueing and playback of two players can be performed by one control device, the system configuration is significantly simplified compared to the conventional system. Also, when one player is in standby mode and the other player is playing, if you want to stop the playback and play the above one player, just press the alternate button and the play button once. Since only one operation is required, there is no possibility of erroneous operation, and the operation can be performed in a short time.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention; Figure 1 is a plan view of the operation panel, Figure 2 is a schematic block diagram of the entire circuit, and Figure 3 is a flowchart regarding the replacement button. be. In addition, in the symbols used in the drawings, 1...
Control device, 7 ₁ , 7 ₂ ... Player connection section, 9, 10
. . . player set button, 21 . . . play button, 39 . . . alternate button.

Claims (1)

[Claims] 1. Selection means for connecting two digital disc players and selecting one of the two players;
A reproduction means is provided for setting the one player selected by the selection means into a reproduction mode, and a replacement means for changing the player to be reproduced. When one player is selected and put into a playback standby state, by operating the playback means and the replacement means, the player in the playback mode is stopped and the player in the playback standby state is played back. A control device for a digital disk player, characterized in that the control device is configured to control a digital disk player in a mode.