JPH0447797Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a playback device for playing back tape-shaped and disc-shaped recording media, and particularly relates to a playback device for playing back tape-shaped and disc-shaped recording media. Regarding an eject device.

[Prior Art] Examples of various devices that play back music or video by attaching a tape-shaped or disk-shaped recording medium to a playback device include, for example, a cassette player, a CD player,
DAT, VTR, video disk player, etc. are well known.

This type of playback device is generally equipped with a so-called loading mechanism that loads the recording medium into the playback position, and an eject mechanism that ejects and takes out the loaded recording medium. In many cases, the operation of inserting and ejecting the recording medium is electrically operated using force.

For example, in a disk player that uses a disk-shaped recording medium, the disk is placed on a disk tray, and the loading and ejecting operations are performed with a single operation of the insert/eject button, and the cassette tape is inserted horizontally. In a cassette player or VTR of this type, by inserting a tape into the cassette insertion slot and applying pressure, the tape is automatically loaded into the playback position, and when the eject key is operated, the tape is automatically ejected.

Also, looking at the internal circuit configuration of the above playback device,
As shown in FIG. 2, there is an operation section 1 in which various operation keys for operating the playback device are arranged, an input port,
The master controller 2 has functions such as the CPU, system ROM, and output port, and controls each drive mechanism such as the reel motor, capstan motor, and plunger of the playback device, and constantly monitors the operating status of the drive mechanism. , and a reproduction drive controller 3 which feeds back its status to a master controller 2, and the master controller 2 and reproduction drive controller 3 are connected by several serial data lines.
They are now able to send and receive data to each other.

[Problems to be solved by the invention] As mentioned above, the master controller, which is the main function of the playback device, and the playback drive controller are connected by a serial data line, and data is exchanged with each other to ensure accurate timing at all times. controls the drive mechanism.

However, due to design considerations in the above circuit, the wiring of the serial data line may be relatively long, and the master controller and playback drive controller are divided into two boards, and the two are connected using a connector or the like. is also often done. For this reason, the controller and serial data line mentioned above are easily affected by external noise on the other side, and if the level of external noise is large or if there is a poor contact between the connectors due to vibration, etc., the master controller and the regeneration drive controller cannot exchange data with each other, and the playback device becomes inoperable or the running tape becomes unable to stop. Therefore, there is an inconvenience that the recording medium remains attached to the playback device and cannot be removed by the user himself.

The present invention has been developed in view of the above circumstances, and it is an object of the present invention to provide an eject device that eliminates the conventional drawbacks and can reliably eject a recording medium even if the playback device falls into a failure situation.

[Means for Solving the Problems] The recording medium playback device of the present invention includes a master controller that controls the system of the playback device, a playback drive controller that controls each drive mechanism of the playback device, and a playback drive controller that controls the master controller and the playback device. In a playback device that is provided with a serial data line connected between drive controllers to exchange data with each other, and an eject device that ejects a recording medium mounted at a playback position by operating an eject switch, the output of the eject switch is A signal is inputted to at least the reproduction drive controller.

[Operation] The recording medium playback device of the present invention directly inputs an eject signal output for ejecting the recording medium mounted at the playback position to the playback drive controller that controls the drive mechanism, and operates the eject key to eject the recording medium. Make sure to eject from the playback position.

[Example] Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a circuit block diagram of an embodiment of the present invention applied to a tape reproducing device. Normally, a tape playback device has various operation switches such as constant speed playback operation, high speed forward/backward operation, stop operation, high speed playback operation, and eject operation, and these operation switches are provided on the front panel of the tape playback device. There is. Reference numeral 11 denotes an operation section that includes all operation switches except for the above-mentioned eject operation, and operation section 1
An operation command signal is sent to the master controller 13 by key operation No. 1.

The master controller 13 is a system control unit having functions such as an input port for inputting key signals of various operation switches of the operation unit 11, an arithmetic unit, a system ROM, and an output port for outputting data signals to the playback drive controller 14. This control section is usually composed of a one-chip microcomputer.

Furthermore, the playback drive controller 14 drives the reel motor, capstan motor, plunger, etc. of the tape playback device based on the data derived from the master controller 13 at timings based on the above data, and constantly monitors the tape running state. The tape transport control section feeds back this status information to the master controller 13.

The playback drive controller 14 is provided with a loading and ejecting mechanism that operates the loading and ejecting of the tape using the driving force of a capstan motor or a dedicated motor.

The master controller 13 and the reproduction drive controller 14 are connected by several serial data lines 15, and are configured to be able to send and receive data to and from each other.

Further, only the eject switch 12 provided on the front panel of the playback device and for ejecting the cassette tape is separated from the outputs of the various operation switch groups of the operation section 11, and the output of the eject switch 12 is directly sent to the playback drive controller 14. The playback drive controller 14 is connected to the playback drive controller 14 and is configured to provide an operation signal to the playback drive controller 14 without going through the master controller 13.

When a tape is loaded at the playback position of the tape playback device configured as described above and the tape running operation switch of the operation unit 11 is operated, the master controller 13 controls the internal system in response to this operation signal.
It performs arithmetic processing based on the ROM and outputs data for driving the plunger, reel motor, capstan motor, etc. to the serial data line 15 at a predetermined timing.

In addition, the playback drive controller 14 drives the plunger, reel motor, and capstan motor based on the given data to put the playback device in a tape running state, and constantly monitors the tape running state, Status information is fed back to master controller 13 via serial data line 15. Therefore, the master controller 13 outputs new data based on this result, and the new data is given to the reproduction drive controller 14.

On the other hand, when the eject switch 12 of the playback device is operated, this operation signal is directly given to the playback drive controller 14. At this time, if the tape running state, which is constantly monitored, is in a stopped state, the capstan motor that operates the cassette ejecting mechanism or a dedicated eject motor is driven to eject the cassette tape at the playback position. When the tape is running, the stop mode is selected by operating the stop key on the operating section 11, and then the eject switch 12 is operated. Further, while the tape is running, it is also possible to eject the tape by directly operating the eject switch 12 without going through a stop operation. In this case, the stop operation is executed within the playback drive controller 14, and then the cassette tape ejection mechanism is activated. Therefore, in the unlikely event that the master controller 13 and the playback drive controller 1
Even if tapes 4 and 4 are no longer able to exchange data with each other, the tape is reliably ejected.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications are possible.

For example, in the embodiment described above, the output of the ejection switch 12 was directly connected to the reproduction drive controller 14, but as shown by the dotted line in FIG. Normally, the eject signal is input to the master controller 13, but if an unforeseen situation occurs and data cannot be transmitted or received, the eject signal may be switched to the reproduction drive controller 14 and input.

[Effects of the invention] As described above, the recording medium playback device of the invention has the following advantages:
The eject key output that ejects the recording medium installed at the playback position is directly input to the playback drive controller that controls the drive mechanism, and the eject key is operated to eject the recording medium from the playback position. Even if the master controller or serial data line of the device is affected by external noise, or if a failure occurs in the above circuit, the recording medium will be reliably ejected by the eject key signal directly input to the playback drive controller. .

Therefore, there is no risk of an accident in which the playback device becomes inoperable and left unattended while the tape is running, and there is no wasteful power consumption. Furthermore, the problem of the recording medium being locked in the playback position can be prevented, which is effective in improving the reliability of the product.

[Brief explanation of the drawing]

FIG. 1 is a main block diaphragm according to an embodiment of the present invention, and FIG. 2 is a conventional circuit block diagram. 11...Operation unit, 12...Eject switch, 13...Master controller, 14...Reproduction drive controller, 15...Serial data line.

Claims (1)

[Scope of utility model registration request] a master controller that controls the system of the playback device; a playback drive controller that controls each drive mechanism of the playback device; a serial data line that is connected between the master controller and the playback drive controller to exchange data with each other; A reproducing apparatus equipped with an eject device for ejecting a loaded recording medium by operating an eject switch, characterized in that an output signal of the eject switch is inputted to at least the reproducing drive controller. Media playback device.