JPS5933680A - Tape cassette - Google Patents

Abstract

PURPOSE:To obtain a simple and inexpensive discriminating means, by attaching an additional discriminating parts to the housing of a standard tape cassette to discriminate an application to a sound recording/reproducing system different from a standard sound recording/reproducing system. CONSTITUTION:A standard compact cassette contains an additional parts 2 for discrimination of PCM sound recording system to show said recording system. The parts 2 is not used as conventional with a tape cassette which is recorded by a standard sound recording system. The plate type parts 2 has U-shaped projected parts 4 at positions opposite to two miserasion preventing pawls 3 which are provided on a back part 1b of a cassette housing 1a of the cassette 1. In addition, a double sided tape 5 is stuck to the surface containing the parts 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to tape cassettes, and provides a simple and inexpensive means for identifying tape cassettes that are recorded and played back using a special recording and playback method different from the standard standard in the casing of the standard tape cassette. In particular, it is an object of the present invention to provide a tape cassette which is easily distinguishable from standard tape cassettes.

The so-called compact cassette has the shape of a cassette.

Dimensions, recording and playback methods, etc. have been standardized in detail. On the other hand, in recent years, in order to improve recording characteristics, special recording methods different from standard recording methods have been researched and developed and are being put into practical use. - For example, there is a 1) CM recording method that converts music waveforms into digital signals and records them. If the same tape cassette used for standard recording method is used for this PCM recording, this PCM
A recorded tape cassette may be mistakenly inserted into a standard recording/playback system. In such a case, noise that is not a normal recorded sound will be played back. Therefore, in order to avoid unnecessary confusion in tape cassettes due to a new recording/playback method replacing the already widely used standard recording/playback method, it is desirable to be able to identify the tape cassette's recording method on the tape cassette itself.

The present invention has been made in response to the above-mentioned demands, and each embodiment will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of a tape cassette provided with identification means according to the present invention.

1 is a standard tape cassette (so-called compact cassette), and information signals are recorded on the tape using a recording method different from the standard recording method, for example, a PCM recording method. Reference numeral 2 denotes an accessory part for identifying the PCM recording method, which is made of synthetic resin, for example, and is used to identify that the tape cassette 1 was recorded using the PCM recording method.

Incidentally, the tape cassette recorded using the standard recording method can be handled as is without attaching the accessory part 2 as before.

The accessory part 2 has a plate shape and has a U-shaped protrusion 4 at a position facing two accidental erasure prevention claws 3 provided on the back surface 1b of the cassette housing 1a of the cassette 1.

Roughly speaking, double-sided tape 5 is attached to the part having the raised part 4. As shown in FIGS. 2 to 5, the size of the attached part 1 is the same width and height as the width t1 and thickness t2 of the cassette housing 2a, and the thickness t3.
has.

The accessory part 2 is attached by folding and removing the accidental erasure prevention claw 3 of the cassette 1, aligning the protrusion 4 with the hole 6 formed at that position, and pressing in the direction of the arrow. The protrusion 4 is inserted into the hole 6, and the attached part 2 is in close contact with the back surface 1b of the cassette 1 and adhered to the back surface 1b with double-sided tape 5, as shown in FIGS. 4 and 5. Therefore, the attachment point 2 is determined by the protrusion 4, and is attached to the cassette flute body 1a while maintaining the same plane without protruding from the width 11 and thickness t2 of the cassette housing 1a. This means that the thickness t3 of the accessory part 2 is added to the depth t4 of 1a.

As a result, cassette 1 for PCM recording is placed at rear 111.
The accessory part 2 is attached to j, and the depth of the cassette housing 1a is increased by t3, resulting in a tape cassette with a different external shape from cassette 1 recorded using the standard recording method, and the operator can visually check the tape force. It is possible to identify that the IA is a cassette with 0M recording, and to prevent incorrect handling in advance. Further, since the shapes are different, it is impossible to attach the tape recorder to a standard tape recorder (not shown), and in this respect as well, there is a problem with the separation.

In addition, since the accessory part 2 is attached using the hole 6 of the claw for preventing accidental erasure on the back side 1b of the cassette housing 1a,
9L does not require any special processing. Please prepare several glazes of accessory parts 2 with different thicknesses T3, and the cassette is a PCM recording method using digital recording, a multi-track recording method that doubles the tape running speed, and a tape running speed that is halved. It is also possible to distinguish between special recording systems for mantissas by attaching separate accessory parts depending on the long-term recording system, etc.

FIG. 6 shows a second embodiment of a tape cassette provided with an i-discriminating means according to the present invention, and the same parts as in It(2) are given the same reference numerals and their explanations will be omitted.

The attached PA part 7 can be inserted into a standard tape recorder while being attached to the cassette 1, and the thickness t3 is extremely small and thin compared to the attached part 2. A bar code 8 indicating the recording method is pasted on the back of this accessory part 7. For this reason, an optical sensor (not shown) is provided in the tape recorder cassette mounting section at a position facing the cassette back surface 1b, and when the cassette 1 is mounted on the tape recorder, this optical sensor detects the barcode 8. Detects the code and identifies the recording method.

In this way, by attaching the accessory part 7 with the barcode 8 to the cassette 1, it is possible to identify several types of recording methods.Furthermore, if the unique characteristics of the tape cassette other than the recording method are displayed with the barcode 8, the tape It is possible to set the recorder to a state in which it is detected by a sensor and recorded and reproduced with characteristics corresponding to the detected characteristics.

As described above, the tape cassette according to the present invention is equipped with accessory parts for different Km of the standard tape cassette housing, so that it can be identified as a tape cassette used for a recording/playback method different from the standard tape cassette. Because there are
Using a conventional standard tape cassette, it can be easily identified as a tape cassette used for another recording/playback method, preventing it from being mistakenly installed in a device for a different recording/playback method, and the attached parts are extremely simple. Because it has such a structure, it can be manufactured at low cost, and since it is only necessary to attach the accessory parts to the cassette housing, it is extremely easy to identify, and the present invention allows for the development of a new recording method while maintaining cassette compatibility. In addition, for example, by preparing several types of accessory parts, it is possible to distinguish between multiple special recording methods, and the tape cassette standard can also be used for new recording methods that will be researched and developed in the future. It has the advantage of being able to be distinguished from other recording methods by simply preparing accessory parts without making any changes.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining a first embodiment of a tape cassette provided with identification means according to the present invention, and FIGS. 2 and 3 are a plan view and a front view, respectively, of the parts shown in FIG. 1. , FIG. 4 is a plan view showing a tape cassette with attached parts attached, FIG. 5 is a side view of FIG. 4 seen from the right side, and FIG. 6 is a tape cassette provided with identification means according to the present invention. FIG. 2 is a diagram illustrating a second embodiment of the present invention. 1... Tape cassette, 1a... Cassette housing, ■
b...Back part of cassette powder, IA...tape cassette, 2...attached parts, 3...nail for preventing accidental erasure, 4
... protrusion, 5 ... double-sided seal, 6 ... hole, 7.
...Inquiry parts, 8...Barcode. 441 Figure 5 payment-

Claims (3)

[Claims] (1) A tape cassette characterized in that a standard tape cassette casing is equipped with an identifying accessory for identifying that the tape cassette is used for a recording/playback method different from the standard recording/playback method. (2) The core accessory part has a predetermined thickness so that when attached to the casing of the tape cassette, the overall external shape differs from the external shape of the standard tape cassette. The tape cassette described in item 1 of the scope of Gosei Momu. (3) The tape cassette according to claim 1, wherein the accessory part has a display section that displays the different recording and playback methods.