JPS59191160A - Cassette deck - Google Patents

Abstract

PURPOSE:To eliminate the trouble of the resetting of optimum condition at every time of the loading of a cassette and perform operation on the optimum set condition by storing various kinds of set condition in a cassette deck while using the tape position as an index when the cassette is taken out. CONSTITUTION:The cassette is loaded in the cassette deck 1, and a memory eject key 9 for ejecting the tape is pressed after various selection switches are selected according to the tape and, for example, reproduction is performed. Then, a storage position determining means 5 extracts the current tape position signal, and the tape position signal is used as the index to store information on the various selection switches, etc., in a position operation data storage means 7. When a preset call key 10 is pressed while the cassette is loaded in the cassette deck 1, a position display means 2 detects the tape position of the loaded cassette and a data detecting means 3 reads the tape position at the time of the depression of the key 9 out of the storage means 7 and the information on the various selection switches, etc., by using the present tape position from the position display means 2 as the index. An operation setting means 4 performs the setting.

Description

Detailed Description of the Invention Technical Field of the Invention The present invention relates to a cassette deck, particularly a cassette deck having tape position display means for extracting the current position of a tape in a state in which a cassette is set. At that time, the value of the tape position display and the tape setting conditions 9, for example, the setting conditions of the Dolby one-way system, etc., are memorized, and when the tape position display is reinstalled, the predetermined tape head position and tape This relates to a cassette deck that allows settings such as setting conditions to be reset.

[Bl Technological Background and Problems The performance of recent cassette decks has improved markedly, but on the other hand, there is a desire for something that can be easily handled.

Conventionally, Dolby B, C, etc. were used as noise reduction to improve the performance of cassette decks.

There are different types of tape biases, such as those corresponding to NORMAL and chromium dioxide (IVIETAL). As a result, the number of switches for selecting various characteristics has increased, making operations complicated.

In particular, it is troublesome to select characteristics that match the tape each time the tape is replaced, and this poses a problem that can even be dangerous in car stereos for automobiles.

For this reason, although improvements have been made such as making the various selection switches easier to press and making it easier to visually see the selected state, these methods still have the problem of having to select the various selection switches, which cannot be said to be sufficient. Ta.

tc+ Object and Structure of the Invention The present invention provides a cassette deck having a tape position display means for extracting the current position of the tape when a cassette is set, in which various tape selection operations are performed only once at the beginning; These various selection values are stored in the cassette deck in relation to the ejection position of the cassette tape, and when the tape is loaded again, the stored various selection values are automatically reset from the position of the loaded tape. By doing so, the purpose is to avoid the trouble of selecting various selection SWs every time, and to always operate under the optimal conditions of the tape. Therefore, the cassette deck of the present invention has a tape position display means for extracting the current position of the tape when the cassette is set, and when ejecting the cassette, at least the position of the tape to be ejected is determined. A tape position/operation data storage means is provided for storing a tape position signal and information regarding the operation of the tape in association with each other, and the above-mentioned data is stored based on the tape position extracted by the tape position display means when the cassette is set. tape position and movement data detection means for indexing the tape position and movement data storage means, and state setting regarding the operation of the tape based on information regarding the tape movement read from the tape position and movement data storage means by the detection means. What is claimed is: 1. A cassette deck characterized by comprising a tape operation setting means for performing the following operations.

According to the above configuration, the selection value selected once is stored, and when the cassette is loaded the first time, the stored selection value is reproduced. The cassette deck can always be operated under optimal conditions.

(Dl　Embodiments of the invention The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a conceptual diagram of a cassette deck according to the present invention.

Reference numeral 1 denotes a cassette deck main body, in which rotation detectors are attached to rotating shafts on the tape winding side and the supplying side, and sends rotation signal pulses from each rotating shaft to the tape position display means 2. The position display means 2 may detect the rotation angular velocity of the reel from the rotation signal pulses on the tape winding side and the supply side, perform arithmetic processing, and display the tape position, or alternatively, the rotation signal pulses on the winding side may be The tape position may be displayed by counting the rotation signal pulses on the supply side each time the value is reached.

First, let's talk about the concept of storing signals such as various selection switches and tape positions using the cassette deck of the present invention.
This will be explained based on the diagram. Insert the cassette into cassette deck 1 and press the 2 selection switch, for example, select Dolby B for noise reduction, chromium dioxide (METAL) for tape bias, etc.
), the channel is optimally selected according to the tape, and the channel is played back, for example. For example, if you press memory eject key 9 to eject the tape,
The storage position determining means 5 extracts the current tape position signal. Further, when the same tape position is already stored in the storage means, the tape position setting means 6 fast-forwards or rewinds the tape to move it to a new tape position different from the one stored in the past, and the tape at that position is moved. Position signals are also extracted. Then, using the tape position signal from which the cassette tape is taken out as an index,
Tape position signals and information on various selection switches when the memory eject key 9 is pressed are stored in a position/operation data storage means 7 in the cassette deck shown in FIG. It is not stored on the cassette tape itself. Then take out the cassette.

put out.

Next, the concept of operating various selection switches, tape positions, etc. using the cassette deck of the present invention will be explained based on Fig. 1. When a cassette is loaded into the cassette deck 1 and the preset call key 10 is pressed, the position display means 2 detects the tape position of the loaded cassette, and the data detection means 3 detects the current tape position from the position display means 2. Using the signal as an index, the tape position and information on various selection switches stored in the 1-position operation data storage means 7 when the memory eject key 9 is pressed are read out. Based on these signals and information, the operation setting means 4 locates the tape position indicated by the tape position signal, selects noise reduction,
Bias selection etc. are reproduced. As described above, according to the present invention, the conditions for various selection switches are stored in the cassette deck using the tape position from which the cassette is taken out as an index. Therefore, when the cassette is installed again, the conditions for various selection switches are read out from the position/operation data storage means 7 using the tape position at the time of installation as an index, and are automatically set. .

FIG. 2 shows the structure of a cassette deck according to the present invention.

The reel rotation pulse signal (α) on the tape winding side and the supply side from the cassette deck 12 and <61 are the waveform shaping circuit 13. 1i generates a square wave pulse signal (cL)
', (formatted to bJ', microcomputer's C
It is read from the input port of the PU 14 and the tape position of the cassette tape is determined. This tape position may be calculated by calculation from the reel rotation angular velocities on the winding side and the supply side of the cassette tape, or it may be calculated by counting within the time when the rotational pulse signal on the winding side of the cassette tape reaches a predetermined number. It may also be determined by the number of rotation pulse signals on the supply side. In addition, the CPU 14 is a one-chip microcomputer, and according to the built-in program, 16 key human power
Performs various processing and calculations based on instructions from. CPU14
is the cassette deck 1 based on the result of the calculation etc.
For example, for 2, fast forward 9 rewind, playback, etc. of the tape,
Record and remove tape.

Instructs bias current selection, such as NORMAL/METAL. Also, for the audio circuit 15, for example, one for noise reduction, CDBX, DOLBY B, C,
Give instructions such as tape selection. Instruct the staff to make changes, etc.

FIG. 3 is a flowchart showing the operation of FIG. 2.

In Figure 3, P(N), PM(N), D(
N)(N=1.2...,10) are the tape position from which the cassette was taken out, the tape position from which the memory eject key was turned on, and various data at this time, and P(N ) as an index, other PM(N)
.

D(N) is read or stored.

In the Imazu 3 device, when a cassette is inserted into the cassette deck according to the present invention (18) and the preset call key is turned on (YES in 19).

When the tape position PI at this time is equal to P (N), (
20), the tape position is fast-forwarded or rewound to data P M (N) corresponding to index P (N) (21). Then the information on D (N) is the cassette deck 12, audio circuit 15. etc. is set.

Next, in the normal use state (23) shown in FIG. 3 tB), after various selections have been made optimally, the memory eject key is turned on (YES in 24).

If PM and all P (N) are not equal, go to point C <(27(7)NO). Equality and ff are (27 YES
) Fast forward or rewind the tape until they are no longer equal, and the tape position where they are no longer equal to 1 is p.

Then, at 2 points C, line < (28), if N- is less than 1o (2
9 YES), PM as PM(N+1), Po as P(
N'+1> and various information are stored in D(N+1) (
30.31).

N kJA 10 or more (') kJA (29) NO)
・After shifting each data of PM (N), P (N) and D (N) one place lower, PM is changed to PM (1
0), P□ as P(10) and various information as D+10
) (32.33).

Although the case where information of 10 cassettes is stored in the 9-frame chain has been described, it is also possible to make N even larger.

(El) As described in detail, according to the present invention, various setting conditions are stored in the cassette deck using the tape position as an index when taking out the cassette.

When the cassette is loaded again, various setting conditions can be reproduced using the tape position as an index. This eliminates the hassle of setting optimal conditions every time.

The effect is that the operation is extremely simple and that the operation is always performed under optimal setting conditions. Particularly in car stereos, safety can be ensured due to its nature, which is a great effect.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram of a cassette deck according to the present invention.
The figure shows one embodiment of the present invention, and FIG. 3 is a flowchart explaining the operation of FIG. 2. In the figure, 9 is a memory eject key, and 10 is a preset call key. Figure 1 Figure 2

Claims (1)

[Claims] In a cassette deck having a tape position display means for extracting the current position of the tape when the cassette is in a closed state, when ejecting the cassette, at least the tape position signal of the tape position to be ejected and the corresponding It is provided with a tape position movement data storage means for storing information related to the movement of the tape in association with the information, and
tape position and movement data detection means for indexing the tape position and movement data storage means based on the tape position extracted by the tape position display means when a cassette is set; 1. A cassette deck comprising: tape operation setting means for setting a state regarding the operation of the tape based on information regarding the operation of the tape read from the cassette deck.