JP2629716B2 - Tape remaining amount display - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape remaining amount display device for displaying a remaining amount of tape wound on a reel of a cassette deck.

2. Description of the Related Art Conventionally, the remaining tape display of a cassette deck uses a counter that displays numbers in a 7-segment display or the like.
Display elements such as light-emitting diodes arranged in a line are sequentially turned on or off according to the remaining amount of tape, and the remaining length of the tape is indicated by the length of the display.

Problems to be Solved by the Invention However, in the conventional tape remaining amount display device,
The visual impression given to the user was weak, and was not sufficient as a display function.

The present invention is to solve the above conventional problems,
An object of the present invention is to provide a tape remaining amount display device which gives a strong visual impression to a user and makes it easy to visually grasp the remaining tape amount.

Means for Solving the Problems The present invention achieves the above object, and a display means in which a plurality of light emitting elements are arranged vertically and horizontally, and an arrow according to the amount of remaining tape wound on a reel. Storage means for storing display data of a plurality of display patterns having different vertical widths of the shape pattern, a tape remaining amount detecting means for detecting the tape remaining amount, and a tape remaining amount detecting means for detecting the tape remaining amount. A display pattern having a vertical width of an arrow-shaped pattern corresponding to the remaining tape amount is read from the storage means,
Display control means for displaying the read display pattern on the display means by matching the direction of the arrow-shaped pattern with the tape running direction and moving the tape in the tape running direction.

According to the present invention, according to the present invention, the display pattern in which the width of the arrow-shaped pattern is changed corresponding to the amount of the remaining tape wound on the reel detected by the remaining tape detecting means is indicated by an arrow. By making the direction of the tape pattern coincide with the running direction of the tape and displaying the same on the display means and moving the tape in the running direction, the remaining tape amount and the running direction of the tape can be easily grasped visually.

Embodiment FIG. 1 shows a front view of an on-vehicle acoustic device (an integrated device of a radio receiver and a cassette deck) according to an embodiment of the present invention. In FIG. 1, 1 is an apparatus main body, 2 is a power switch, 3 is a dust cover provided at the cassette opening so as to be openable and closable, 4 is an eject button for ejecting the cassette, and 5 is a button for selecting radio reception. Tuner button, 6 is a manual tuning button for manually tuning AM and FM broadcasts, 7 is a seek button for automatic tuning, 8 is a band switching button, and 9 is a memory for storing a favorite broadcasting station. A preset memory button, 10 is a volume adjustment button, 11 is a characteristic display section for displaying spectrum characteristics, equalizer characteristics, remaining tape amount, and the like, and light emitting elements are arranged vertically and horizontally. Reference numeral 12 denotes an equalizer characteristic adjustment button, 13 denotes a display unit for displaying a reception frequency, a reception band, an operation state of the cassette deck, and the like. 14 denotes a display switching button. When the display switching button 14 is pressed, the characteristic display unit 11 displays the spectrum. The display is switched to the characteristic display or the equalizer characteristic display. Reference numeral 15 denotes an equalizer memory button for storing equalizer characteristics, and reference numeral 16 denotes a volume memory button for storing a desired volume.

In FIG. 1, when the power switch 2 is turned on and the tuner button 5 is pressed, a radio reception mode is set, and when a cassette is inserted into the cassette insertion slot, a cassette deck mode is set. In the cassette deck mode, the above operation buttons
6, 7, 9 etc. can be used as operation buttons for deck control. For example, operation button 6 is fast forward (F
F), an operation button for fast rewind (REW).

FIG. 2 shows the configuration of the above embodiment. In FIG. 2, 20 is an electronic tuner, 21 is a cassette deck, 21A
Is a tape remaining amount detector.
Outputs a pulse each time the reel of the cassette deck 21 rotates by a predetermined angle. Reference numeral 22 denotes an analog switch. The analog switch 22 selects one of an audio signal output from the electronic tuner 20 and an audio signal output from the cassette deck 21. When the cassette is inserted into the cassette deck 21, The analog switch 22 is switched to the cassette deck 21 side by a control signal output from the cassette deck 21, and the analog switch is switched by the control signal generated when the cassette is ejected from the cassette deck 21.
22 is switched to the electronic tuner 20 side. Reference numeral 23 denotes a bandpass filter group. The bandpass filter group 23 has a center frequency of 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 KHz, 3.5 KHz, and 10 KHz.
Of the band pass filters ₁ to ₇ . The outputs of the bandpass filters ₁ to ₇ are used for displaying spectral characteristics. 24R and 24L are band-pass filter groups constituting equalizers for the right and left channels, respectively.
24L is composed of a plurality of bandpass filters ₁ to ₇ having different center frequencies. 25R and 25L are electronic volume groups constituting equalizers for the right channel and the left channel, respectively.
25R and 25L are composed of a plurality of electronic volumes VR1 to VR7 for adjusting the output levels of the band-pass filter groups 24R and 24L. 27F is an electronic volume for adjusting the level of the front signals FR and FL of the right and left channels, and 27R is an electronic volume for adjusting the level of the rear signals RR and RL of the right and left channels. 28F is a power amplifier for amplifying the front signals FR and FL, and 28R is a power amplifier for amplifying the rear signals RR and RL. The front signals FR and FL amplified by the power amplifier 28F are respectively applied to speakers 29FR and FL disposed on the right and left sides of the front side of the interior of the vehicle, and the signals RR and RL amplified by the power amplifier 28R are The signals are respectively applied to speakers 29RR and 29RL arranged on the right and left rear sides of the vehicle compartment. Reference numeral 30 denotes an operation unit. The operation unit 30 includes various operation buttons 5 and 5 shown in FIG.
6, 7, 8, 9, 10, 12, 14, 15, 16, etc. Reference numeral 31 denotes a display unit. The display unit 31 includes the display unit 13, the characteristic display unit 11, and the like in FIG. Reference numeral 32 denotes a driver for driving the display unit 31.

33 is the above electronic tuner 20, cassette deck 21, electronic volume 25R, 25L, electronic volume 27F, 27R, driver 32
The function of the CPU 33 will be described below. Reference numeral 34 denotes a key processing unit. The key processing unit 34 determines the operation button operated by the operation unit 30 to change or update data stored in the storage unit 35, and to the timing control unit 36 Send the judgment result. The timing control means 36 determines the timing of various operations according to the key determination result, and controls the storage control means 37, the device selection control means 38, the display control means 39, and the deck control means 40. The storage control means 37 specifies an address for writing data to the storage means 35 or reading data. The storage means 35 includes data for controlling the electronic tuner 20, data for controlling the cassette deck 21, data for controlling the equalizer (for controlling the electronic volumes 25R and 25L), and data for controlling the electronic volumes 27F and 27R. Data, data for controlling the driver 32, and display data of a display pattern corresponding to the remaining amount of tape wound on the reel are stored. The data read from the storage means 35 is transferred to the display control means 39, the deck control means 40, and the serial interface 41. The device selection control means 38 is a device to which data is to be transferred from the CPU 33 (the electronic tuner 20, the equalizer electronic volumes 25R, 25R).
L, electronic volume 27F, 27R, driver 32). The data read from the storage means 35 is transmitted to the electronic tuner 20, the equalizer (electronic volume 25R, 25L) via the serial interface 41 and the interface 42,
The electronic volumes 27F and 27R are transferred to the driver 32.
The data for controlling the cassette deck is stored in the deck control means 40.
Is transferred to the cassette deck 21 via the. 43 is a timer for managing the time of the timing control means 36, 44 is A / D conversion means for A / D converting the output of the bandpass filter group 23,
The data converted by the A / D conversion means 44 is displayed on the display control means 3.
9, serial interface 41, interface 42
Is transferred to the driver 32 via.

Next, the operation of the above embodiment will be described. When a cassette is inserted into the cassette insertion slot, the cassette is transferred to a recording / reproducing position and set, and a reproducing operation (or a recording operation) starts. In this cassette mode, the operation button 6 is an operation button for fast-forward FF and fast-reverse REW. When the operation button 6 is pressed, the operation of the operation button 6 is determined by the key processing means 34, and the timing control means 36 outputs the FF or REW. An operation timing signal is output, and the cassette deck 21 starts an FF operation or a REW operation according to a control signal output from the deck control means 40. When the FF or REW operation starts, the remaining tape detecting means 21A detects the rotation speed of the reel in the cassette deck 21. The tape remaining amount detector 21A is composed of a pulse generating circuit or the like that generates a pulse each time the reel rotates a predetermined angle. The pulse output from this pulse generating circuit is sent to the deck control means 40 via the cassette deck 21. Can be
The deck control means 40 determines the rotation speed of the reel from the transmitted pulse. The remaining amount of the tape corresponds to the rotation speed of the reel, and the display control means 39
The tape remaining amount signal corresponding to the remaining amount of the tape is output.
The display control means 39 reads from the storage means 35 the data of the display pattern corresponding to the input tape remaining amount. FIG. 3A-
G indicates a display pattern. FIG. 3A shows a display pattern when the remaining tape amount is the largest, and the width of the display pattern in the vertical direction is the largest. FIG. 3G shows a display pattern when the remaining tape amount is the smallest, and the width of the display pattern in the vertical direction is the smallest. Further, FIGS. 3B to 3F show display patterns in which the vertical width of the arrow-shaped pattern is changed according to the amount of remaining tape between the case where the remaining amount of tape is the largest and the case where the remaining amount of tape is the smallest. Is shown. The display control means 39 reads display data of a display pattern having a vertical width of an arrow-shaped pattern corresponding to the remaining tape amount detected by the remaining tape detector 21A from the storage means 35, and reads the data from the serial interface 41. ,interface
It is sent to the driver 32 via 42, and an arrow-shaped pattern shown in FIGS. The pattern shown in FIG. 3 shows the pattern at the time of REW, and this arrow-shaped pattern moves to the left. The pattern at the time of FF is a right-pointing arrow-shaped pattern, and at the time of FF, the right-pointing arrow-shaped pattern moves rightward.

For example, it is assumed that when the operation button 6 is operated to perform the RFW operation, a left arrow pattern shown in FIG. 3C is displayed. This pattern moves to the left. When the REW operation proceeds and the remaining tape amount decreases to a predetermined value, the display pattern is switched to a display pattern having a small width as shown in FIG. 3D, and this pattern also moves to the left. When the remaining amount of the tape further decreases, the order is similarly switched in the order of FIG.

As described above, in the present embodiment, since the width of the display pattern is changed according to the remaining tape amount, the remaining tape amount can be grasped at a glance. In this embodiment, since the moving direction of the display pattern is changed according to FF and REW, it is possible to determine at a glance whether the FF operation or the REW operation is being performed. As described above, according to the present embodiment, it is possible to easily determine the remaining amount of the tape and the FF / REW operation.
Further, in the present embodiment, since the characteristic display unit 11 for displaying the spectral characteristics and the equalizer characteristics is used, a display dedicated to the remaining tape amount display is not required, and the cost is reduced.

In the above embodiment, the tape remaining amount is displayed by the width of the display pattern, and FF and REW are displayed in the moving direction of the display pattern. However, the width of the band-shaped display pattern is not changed without moving the display pattern. The area may be changed according to the remaining amount of the tape, or the area of the display pattern such as a square, a rhombus, and a circle may be changed according to the remaining amount of the tape. Also, a display pattern such as a square may be moved in accordance with the FF and REW operations.

As is clear from the above embodiment, the present invention changes the predetermined display pattern in which the width of the arrow-shaped pattern in the vertical direction is changed according to the tape running direction according to the remaining amount of tape wound on the reel. By displaying and moving the tape, the tape remaining amount and the tape running direction can be easily grasped visually.

[Brief description of the drawings]

FIG. 1 is a front view of an audio device to which a tape remaining amount display device according to one embodiment of the present invention is added, FIG. 2 is a block diagram of the audio device, and FIGS. It is a figure showing a pattern. 1 ... device main body, 11 ... display unit, 14 ... display switching button, 20
... Electronic tuner, 21 ... Cassette deck, 21A ... Tape remaining amount detector, 22 ... Analog switch, 23 ... Band pass filter group, 30 ... Operation unit, 31 ... Display unit, 32 ...
... Driver, 33 ... Central processing unit, 34 ... Key processing means, 35 ... Storage means, 36 ... Timing control means, 37 ...
... Storage control means, 38 ... Device selection means, 39 ... Display control means, 40 ... Deck control means, 41 ... Serial interface, 42 ... Interface, 43 ... Timer, 44 ... A / D conversion means .

Claims (2)

(57) [Claims] 1. A display means in which a plurality of light-emitting elements are arranged vertically and horizontally, and a plurality of displays in which the width of an arrow-shaped pattern in the vertical direction differs according to the amount of remaining tape wound on a reel. Storage means for storing pattern display data; tape remaining amount detecting means for detecting the tape remaining amount; and a vertical width of an arrow-shaped pattern corresponding to the tape remaining amount detected by the tape remaining amount detecting means. A display control means for reading the display pattern having the following from the storage means, displaying the read display pattern on the display means by matching the direction of the arrow-shaped pattern with the tape running direction, and moving the read pattern in the tape running direction. A tape remaining amount display device comprising: 2. The tape remaining amount display device according to claim 1, wherein the characteristic display means for displaying the spectrum characteristic or the equalizer characteristic is also used as the display means for displaying the remaining tape amount.