JPH05994Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording medium reproducing device, and more particularly to an eject operation device for ejecting a recording medium mounted at a reproducing position of the reproducing device.

[Prior Art] A playback device that plays back a tape-shaped or disk-shaped recording medium usually includes a so-called loading mechanism that loads the recording medium into the playback position, and an ejection mechanism that ejects the loaded recording medium from the playback position. In particular, many modern playback devices use the driving force of a motor or the like to operate the insertion and ejection operations of the recording medium electrically.

In this case, in order to reduce power consumption as much as possible, the loading and ejecting mechanism is designed to reduce the sliding frictional resistance of each part of the mechanism as much as possible, and to operate smoothly even when a motor with low driving torque is used.

By the way, among the above-mentioned playback devices, especially in-vehicle tape players, it is possible to directly eject the tape without going through a stop operation while the tape is running, and moreover, the tape is automatically ejected when the power is turned off, such as by turning off the engine key. Some devices are equipped with a so-called emergency ejection function.

As shown in the flowchart shown in Figure 3, this emergency eject function ejects the cassette tape installed at the playback position by operating the eject key. Execute the ejection operation regardless of the presence or absence of the

The reason for this is that the above-mentioned loading and ejecting mechanisms are designed to have extremely low sliding frictional resistance, so this type of regeneration device
Due to a shock while the product is being transported or a vehicle carrying the product is running, the loading mechanism may be activated even if the tape is not inserted, resulting in a pseudo tape attachment state. This means that the smaller the sliding friction resistance of the mechanism, the more susceptible it is to vibration.

Therefore, the main purpose of the emergency eject function is to restore the playback device to its normal state by ejecting the playback device that has reached an unexpected pseudo-tape loading state.

Similarly, if a foreign object is inserted into the tape insertion slot of the playback device, ejection must be taken into consideration.

Further, in the above-described playback device, since operating noise is generally generated directly or indirectly during the operation of the loading and ejecting mechanisms, a muting function is added to the audio circuit.

[Problems to be Solved by the Invention] Although the playback device with the above-mentioned emergency eject function is convenient to operate, it may also cause secondary problems. In other words, if you inadvertently touch the eject key while receiving a radio signal on the playback device, the muting function of the audio circuit will be activated and the radio broadcast will become unlistenable during the eject operation period, or the next There were operational problems, such as the operation being forced to be interrupted until the eject operation was completed because the operation could not be accepted.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide an eject function for a playback device that is easy to operate.

[Means for Solving the Problems] According to the present invention, the above problems are solved by an eject key for ejecting a recording medium mounted at a playback position, and a mounting state detector for detecting the presence or absence of a recording medium at the playback position. a recording medium drive mechanism including an eject mechanism for ejecting the mounted recording medium from a playback position; and a mounting state detector that detects whether the recording medium is mounted when the eject key is operated. When it is detected, the ejection operation is commanded to the recording medium drive mechanism, and when it is detected that the recording medium is not installed,
The present invention is solved by including a control section that instructs the recording medium drive mechanism to perform an ejection operation only when the eject key is operated continuously for a predetermined period of time or more.

[Function] The recording medium playback device of the present invention allows the recording medium to be immediately ejected by operating the eject key when the recording medium is installed at the playback position.
If no recording medium is installed at the playback position,
By continuing to operate the eject key for a predetermined period of time or more, the ejecting mechanism executes the ejecting operation.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing each main circuit when an embodiment of the present invention is applied to a tape reproducing device.

Tape playback devices are usually equipped with various operation switches such as constant speed playback operation, high speed forwarding operation, stop operation, high speed playback operation, and eject operation, and these operation switches are provided on the front panel of the playback device. .

Reference number 1 in FIG. 1 is an operation section that includes all of the above-mentioned operation switches, and this key input signal is sent to an input port of an information processing device 2 (hereinafter referred to as CPU). In addition to the input port for inputting the key signals of the operation section 1, the CPU 2 has a calculation section, a system
This is a system control unit having various functions such as a ROM and an output port for outputting drive data to the cassette drive mechanism 4.

In addition, the cassette drive mechanism section 4 is connected to the CPU 2.
This is a tape transport control unit that controls mechanisms such as a reel motor, a capstan motor, and a plunger of a tape playback device with accurate timing based on drive data derived from the drive data derived from the drive data derived from the drive data derived from the drive data derived from the drive data.

Furthermore, this mechanism section 4 is provided with an eject mechanism for ejecting the cassette tape using the capstan motor or a dedicated motor, so that the tape is ejected from the playback position by operating the eject key. It is configured.

The playback device according to the embodiment of the present invention is provided with a cassette tape detector 3 that detects the tape mounting state, i.e., whether or not the cassette tape is mounted at the playback position, and outputs an output signal indicating the presence or absence of a cassette tape. It is now given to CPU2.

Further, the CPU 2 is equipped with a function to determine whether the eject operation key of the operation unit 1 is operated in relation to the presence signal of the cassette tape detector 3, and the eject command as a result of determining the operation condition is sent to the cassette. It is output to the mechanism section 4.

When a tape is loaded in the playback position of the tape player configured as described above and the tape running key of the operation unit 1 is operated, the CPU 2 performs arithmetic processing based on the system ROM in response to the operation key input.
Plunger, reel motor,
The cassette mechanism 4 outputs data signals for driving the capstan motor and the like, and the cassette mechanism 4 controls the mechanism based on the given data.
Run the tape.

On the other hand, the circuit operation when the tape is loaded at the playback position and the tape is ejected from the playback device in the standby state will be explained with reference to the flowchart of FIG. Reference numerals 11, 12, and 13 in FIG. 2 are functions for determining the eject key operation conditions of the CPU 2. First, the eject key of the operating section 1 is operated, and then the cassette tape installed at the playback position is detected by the detector 3. Then, the CPU 2 immediately outputs an eject command to the cassette mechanism 4, drives the mechanism, and the cassette tape is ejected from the playback position.

Here, if no tape is loaded at the playback position, the CPU 2 similarly determines the operating conditions of the eject key, and issues an eject command to the cassette mechanism 4 only when the eject key is operated for a predetermined period of time or more. is output, and an eject command is not output if the eject key operation is less than a predetermined time.

Specifically, the above-mentioned operation condition determination function of the CPU 2 can be realized by providing a timer set to a predetermined time in the CPU 2 and comparing the eject key operation time input to the CPU 2 with the time of the timer.

Although the present invention has been described above with reference to positional embodiments, the present invention is not limited thereto, and various modifications can be made based on the technical idea of the present invention.

[Effects of the invention] As described above, according to the playback device of the present invention, when a recording medium is installed at the playback position, the recording medium is ejected by operating the eject key, and when no recording medium is installed at the playback position. In this case, the eject mechanism was made to eject by operating the eject key continuously for more than a predetermined period of time, which caused unexpected vibrations to be applied to the playback device without a recording medium installed, resulting in damage to the playback device. Even if it enters a pseudo-loading state, it is immediately restored to a normal state, and even if the eject key is carelessly touched, no unnecessary ejecting operation is performed. Therefore, operability is improved.

[Brief explanation of drawings]

Fig. 1 is a circuit block diagram when an embodiment of the present invention is applied to a tape playback device, Fig. 2 is a flowchart showing the circuit operation, and Fig. 3 is a flowchart showing the circuit operation of a conventional playback device. It is a chart diagram. 1... Key operation unit, 2... CPU, 3... Cassette tape detector, 4... Drive mechanism.

Claims (1)

[Claims for Utility Model Registration] An eject key for ejecting a recording medium mounted at a playback position, a mounting state detector for detecting the presence or absence of a recording medium at the playback position, and an eject key for ejecting a recording medium mounted at a playback position; a recording medium drive mechanism equipped with an eject mechanism for ejecting the medium from the recording medium;
When the eject key is operated, if the loading state detector detects that the recording medium is loaded, the recording medium drive mechanism is commanded to eject the recording medium, and if it is detected that the recording medium is not loaded, A recording medium playback device comprising: a control section that instructs the recording medium drive mechanism to perform an ejection operation only when the eject key is operated continuously for a predetermined period of time or more.