JPH0567390A - Audio reproducing device - Google Patents

Abstract

PURPOSE:To provide a dividing type micro computer system capable of executing efficiently a memory play and a random play on an audio reproducing device. CONSTITUTION:This device is provided with an actuator micro processor 4 containing an actuator control means 10 controlling the actuator mechanism 5 of the audio reproducing device, and a control micro processor 3 containing an input key/display control means 6 controlling an input key 2 and a display 1 corresponding to a user and a playing control means 7 controlling the specification and the sequence of a music played by the actuator mechanism 5. Then, respective micro processors contain communication control means 8, 9 coupling each other in accordance with a fixed order.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a CD player (C
DP) and digital audio tape recorder (DAT)
The present invention relates to an audio reproducing apparatus such as the above, and more particularly to an audio reproducing apparatus capable of performing program play and random play of musical pieces to be played. Here, the program play means that the user can freely store the music desired by the user in the audio reproducing apparatus in the order in which he / she wants the music to be played, and those performances are performed in that order. It means that the audio reproducing apparatus itself selects one of the songs by a certain probability method, and similarly, the remaining songs are randomly selected one after another and played.

[0002]

2. Description of the Related Art A block diagram showing the structure of a conventional audio reproducing apparatus is shown in FIGS. FIG. 5 shows the control procedure in FIG. FIG. 3 shows a configuration for controlling the entire audio reproducing apparatus using one microprocessor. There, a one-chip microcomputer is used as the microprocessor 11, and an actuator that controls an actuator mechanism 5 such as a pickup of an audio reproducing device by utilizing a ROM, a RAM, an I / O port, a timer and the like built in the chip. The control means 10, the key / display control means 6 for controlling the input keys 2 and the display 1 corresponding to the user, and the performance control means 7 for playing the designated music by using them are realized.

Although this configuration minimizes the amount of hardware required for the device and is sufficiently satisfactory from the viewpoint of downsizing of the device and cost reduction of parts, on the other hand, it has the ROM and RAM built in the chip. It was not possible to improve the software-like service function due to the limitation of the small and limited amount of memory, and it was not possible to have the so-called automatic changer function for playing songs in the order of selection.

FIG. 4 shows the structure of a typical audio reproducing apparatus having the above-mentioned auto changer function.
One microprocessor 11 shown in FIG. 3 is divided into two one-chip microcomputers 3 and 4. The one-chip microcomputer is used in FIG.
For the same reason, one of which is the key / display control means 6 as the control microprocessor 3.
And the other one as the actuator microprocessor 4 shares the functions of the remaining performance control means 7 and actuator control means 10.

In this configuration, the key / display control means 6 is removed from the actuator microprocessor 4, and the amount of memory is increased by that amount, especially the usable RAM.
As a result, an autochanger function that requires the memory of some designated songs and their playing order has been realized. Actuator microprocessor 4
The performance control means 7 and the actuator control means 10 are made to coexist inside. Only the microprocessor 4 on the actuator side can judge the end of the performance of the designated music, and the processing for designating the next music is performed. This is because, unless the processing is performed inside the chip 4 at a high speed, the actuator mechanism 5 starts playing the next piece of music that has just ended regardless of the designation while the actuator control means 10 is being controlled. ..

FIG. 5 shows a procedure for distributed control between the two microprocessors 3 and 4 shown in FIG.
In the figure, first, on the control microprocessor 3 side, the user designates a desired musical piece and its performance order by using the input keys 2 and the display 1. The contents of all the songs, for example, data such as disk NO and track NO are transferred 12 to the actuator microprocessor 4 via a so-called bus or using a serial communication function built in the chip, and the data is transferred to the communication control means 7. It is stored in the memory and the performance starts at the same time. The performance is continued until it is finished according to the designated music and the designated order stored in the actuator microprocessor 4 side.

[0007]

However, even in the conventional configuration shown in FIG. 4, many functions such as the performance control means 7 and the actuator control means 10 are concentrated in the microprocessor 4 on the actuator side. Amount of memory by using microcomputer, especially RA
Due to the limit of M, memory play and random play, which use a large amount of RAM, provide only a limited range of services, which is insufficient to satisfy today's various demands. On the other hand, the microprocessor 3 on the control side includes only a so-called lower-order function of the key / display control function 6, so that there is still room in the memory, and in that sense, the division of functions in the divided type of FIG. I couldn't say it was done well.

In view of the above-mentioned problems, the object of the present invention is to provide an optimal function sharing to both the divided actuator side and control side in the program play and random play functions installed in CDP, DAT and the like. In addition to effective utilization of memory, etc., it is to achieve it in a comprehensive sense including hardware and software aspects. Another object of the present invention is to provide an efficient communication control means between the actuator side and the control side due to the above-mentioned function sharing.

[0009]

An audio reproducing apparatus of the present invention comprises an actuator control means 10 for controlling an actuator mechanism 5 of the audio reproducing apparatus and a communication control means 9 for communicating with a control microprocessor 3 for designating a musical piece to be played. , An input / output control unit 6 for controlling the input key 2 and the display 1 corresponding to the user, a musical piece played by the actuator mechanism 5 and a musical performance control unit 7 for designating the musical order of the musical piece and the musical piece to be played. The control microprocessor 3 includes a communication control means 8 for communicating with the actuator microprocessor 4 for specifying

There, the communication for designating the musical piece to be played between the two microprocessors 3 and 4 using the communication control means 8 and 9 is performed by the control microprocessor 3 and the performance start command of the designated musical piece. The actuator microprocessor 4 comprises a performance end response of the specified tune, and after the performance end response, the actuator microprocessor 4 suspends the actuator mechanism 5 until the next performance start command. To control.

[0011]

By distributing the performance control means 7 to the control microprocessor 3 side as compared with the above-mentioned configuration, that is, the conventional configuration, the control microprocessor 3 can fully utilize the memory, especially the RAM. .. Further, only the actuator control means 10 for controlling the actuator mechanism 5 is left on the actuator microprocessor 4 side, the control microprocessor 3 side is clearly assigned the function corresponding to the software, and the actuator microprocessor 4 side is clearly assigned the function corresponding to the hardware. Be divided. Therefore, all changes, additions and modifications of service functions can be performed only on the control microprocessor 3 side.

Further, by providing the communication control means 8 and 9 and determining the procedure thereof as described above, the actuator mechanism 5 can be simply and independently of the next designated tune during program play in the case of the above-mentioned split type. It is possible to prevent the performance of the next piece, which has been finished, from being started. Furthermore, this communication procedure clarifies the interface between the microprocessors, and the function sharing between the microprocessors becomes more complete.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An audio reproducing apparatus according to the present invention will be described in detail below with reference to FIG. 2 specifically illustrates the communication control procedure of FIG. In FIG.
The actuator microprocessor 4 includes CDP and DA.
An actuator control means 10 for controlling the T actuator mechanism 5 and a communication control means 9 for providing an interface with the control microprocessor 3 are included. In addition to the conventional key / display means 6, the control microprocessor 3 includes a performance control means 7 and a microprocessor 4.
Communication control means 8 is included to provide an interface with.

By the function sharing according to the present invention, the illustrated A side is clearly assigned to the hardware function, and the B side is assigned to the software function. Therefore, the performance control means 7 can fully utilize the memory of the control microprocessor 3 to perform high-performance service, and the actuator microprocessor 4 can be used for controlling the actuator mechanism 5 of various products without being changed. It will be possible. In addition, a communication control procedure is determined between the communication control means 8 and 9 connecting the respective microprocessors 3 and 4, and the function sharing is further clarified.

FIG. 2 shows a communication control procedure according to the present invention. First, the user inputs the input key 2 and the display 1.
Use the to play the songs (a, b) and their order (a->
Specify b). The control microprocessor 3 sends 13, to the actuator microprocessor 4, a command specifying the first music piece a as a performance music piece. Upon receiving the command, the control microprocessor 4 controls the actuator mechanism 5 to play the designated music a. When the performance is completed, the control microprocessor 4 suspends the actuator mechanism 5 and sends an event 14 of a performance end report to the control microprocessor 3. Upon receiving the event, the control microprocessor 3 next transmits 13 a command designating the music piece b to the actuator microprocessor 4, and thereafter, the above processing is repeated until all the designated music pieces are played.

As described above, according to the procedure of the present invention, the actuator mechanism 5 is temporarily stopped at the end of the performance of the music designated by the actuator microprocessor 4, and the microprocessor is divided into two parts as in the present invention. As a possibility that occurs when the functions are shared as in 1, it is possible to prevent the next piece of music from being played after the end of the performance of a certain piece of music, regardless of the designated piece of music.

A serial communication function built into the chip may be used for this communication, or data may be transmitted / received in parallel through a bus. In the figure, the arrow shown by the dotted line at the left end shows the exchange of data with the input key 1 and the display 2, and according to the procedure of the present invention, the progress of detailed information during communication is displayed on the display 2.
Can be displayed in.

[0018]

As is apparent from the above description, in the audio reproducing apparatus according to the present invention, the performance control means 7 is moved to the control microprocessor 3 side, so that the control microprocessor 3 has a sufficient memory, especially many memories. R
AM can be used, and it becomes possible to provide advanced services such as memory play in which a large number of songs and their playing order can be specified by the user, and random play in which the performance is automatically selected according to one of several probabilities. .. Further, since the service functions are concentrated on the control microprocessor 3 side, the software service functions can be changed, added or modified by changing only the control microprocessor 3 to improve the workability, and the original service for the user can be improved. When developing a product including random play and various other service functions, it suffices to wake up the corresponding control microprocessor 3. In this case, since the interface with the opposing actuator microprocessor 4 is fixed by the communication control means 8, it is only necessary to change the performance control means 7 without paying attention to the connection with the opponent. Therefore, according to the present invention, it is possible to reduce the time required for the development and design of a new product, the man-hour, and the cost for product management.

Further, only the actuator control means 10 dedicated to the hardware control of the actuator mechanism 5 exists on the actuator microprocessor 4 side, and the communication interface with another control microprocessor 3 for controlling it is clarified by the communication control means 9. Since the actuator microprocessor 4 can be used alone in various reproducing devices, various products can be provided by changing the specifications of the control microprocessor 3 side according to the performance and cost of the device. .. In this case, the effect of mass production of the actuator microprocessor 4 can be expected, and therefore the cost of parts can be significantly reduced.

Further, by using the communication control procedure according to the present invention, even in the microprocessor configuration divided into two, the music selection is surely performed from the end of the performance of a specified music to the music specified next. Also, unlike the conventional method, since each song is specified and the end of performance is reported, complicated songs such as random play can be executed, and detailed information about the performance on the display 1 can be displayed. become.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an audio reproducing apparatus according to the present invention, in which function sharing is clearly shown.

FIG. 2 is a communication flow chart showing the communication control procedure of FIG. 1 according to the present invention.

FIG. 3 is a block diagram showing an example of an integrated configuration of a conventional audio reproducing device.

FIG. 4 is a block diagram showing an example of a division type configuration of a conventional audio reproducing apparatus.

5 is a communication flow chart showing a conventional communication control procedure of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Display 2 ... Input key 3 ... Control microprocessor 4 ... Actuator microprocessor 5 ... Actuator mechanism 6 ... Key / display control means 7 ... Performance control means 8, 9 ... Communication control means 10 ... Actuator control means 11 ... Microprocessor 12 , 13, 14 ... Control signal

Claims (2)

[Claims] 1. An audio reproducing device comprising a display (1), an input key (2), an actuator mechanism (5) of the audio reproducing device, and a device controlling means for controlling them as a whole, wherein the device controlling means comprises the actuator. An actuator microprocessor (4) including an actuator control means (10) for controlling the mechanism (5) and a communication control means (9) for communicating with a control microprocessor (3) for designating a musical piece to be played, and an input corresponding to a user. A key / display control means (6) for controlling the key (2) and the display (1), a performance control means (7) for designating a musical piece to be played by the actuator mechanism (5) and a performance order thereof, and designation of a musical piece to be played. Control means (8) for communicating with the actuator microprocessor (4) for Audio playback device, characterized in that a control microplate processor (3) comprising. 2. Communication between the respective communication control means (8, 9) for designating a musical piece to be played is performed by the control microprocessor (3) to start playing the designated musical piece and the actuator microprocessor (4). ) From the performance end response of the designated song, and after the performance end response, the actuator microprocessor (4) suspends the actuator mechanism (5) until the next performance start command. The audio reproducing apparatus according to claim 1, wherein (5) is controlled.