JPS58184744A - Semiconductor cassette - Google Patents

Abstract

PURPOSE:To enable to detect easily the attached condition to an electronic apparatus, and to enable to discriminate the kind of a cassette by a method wherein conductive members to come in contact with the electronic apparatus electrically at two points or more are provided, and when the members are made in the attached condition to the electronic apparatus, the contacts are made in the conducting condition mutually. CONSTITUTION:Hooks 1a for fixation to an electronic apparatus are protruded at the lower parts of the confronting sides of the upper case 1 of a semiconductor cassette. The case 1 is engagingly fixed with a lower case 2. The inside of the case is constructed of connectors 3, a semiconductor element 4 and a detecting plate 5, and the connectors 3 conduct between the electronic apparatus and the element 4. The tips at both the edge parts bent in the L-shape of the detecting plate 5 are fixed to engaging holes, and are led out outside of the cassette to form the contact terminals 5c, 5d. Patterns 6a, 6c are provided on the lower face f a printed substrate 6 and come in contact with the terminals 5c, 5d, and are made in the conducting condition by the detecting plate 5. Moreover discrimination of the kind of the cassette can be attained by changing the positions of the contact terminals.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a semiconductor cassette, in particular a semiconductor cassette containing a semiconductor element,
The present invention relates to a semiconductor cassette that is detachable from an electronic device body.

Conventionally, semiconductor cassettes containing semiconductor elements such as ROM, which are removable from the main body of the electronic device, are used to expand memory functions, change programs, etc. in electronic devices such as electronic desktop calculators and electronic learning machines. Since it is not possible to easily check the mounting condition of the device, it is not possible to detect whether the device is installed incorrectly during re-installation or if it falls off due to vibrations after installation, which can lead to problems such as malfunction of electronic devices. Furthermore, as the amount of information stored increases, the variety of semiconductor cassettes also increases, making it extremely difficult to select a desired semiconductor cassette.

Therefore, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a semiconductor cassette in which the state of attachment to electronic equipment can be easily detected and the type of the cassette can be easily identified.

In order to achieve the above object, the present invention provides a conductive member having contact terminals that are in electrical contact with an electronic device at at least two points, and when it is attached to the electronic device, the contact terminals are in a conductive state. structure was adopted.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the structure of a semiconductor cassette according to an embodiment of the present invention, and the reference numeral 1 in the figure is the upper case of the semiconductor cassette.

A hook 1a (one side is not shown) for fixing an electronic device (not shown) is protruded from the lower part of the opposing side of the upper case 1, and this fixing hook 1a has a detection board (described later). Fitting holes 1b into which both end portions of 5 are fitted and fixed are formed respectively. The upper case 1 is mechanically fixed to a lower case 2 having a groove 2a in the center and is integral with the upper case 1. The lower case 2 is mainly made of an insulating material such as plastic.

The internal structure inside these cases 1 and 2 will be explained later in the connector 3.
Semiconductor element 4. As is well known, the connector 3 connects the electronic device to the semiconductor element 4, and is formed by alternately laminating an insulating member 3a, a conductor 1-JOi, and a member 3b. The case 1 and the lower case 2 are fitted and fixed on both sides (two gaps (not shown)), respectively.

Each end r4a of the semiconductor element 4 is placed on the conductive member 3b of the connector 3, and is held down by the connector 3 and the upper case 1 so as not to be displaced.

Furthermore, a detection plate 5 made of a conductive material such as metal for realizing the present invention is provided between the semiconductor element 4 and the lower case 2. It is fitted into a groove 2a provided in the center of the upper surface, and the tips of both ends bent into an L-shape are fitted and fixed into the fitting holes 1b of the upper case 1 and pulled out to the outside of the cassette, and the contact terminals 5c
, 5d.

Next, FIG. 2 shows a state in which the semiconductor cassette configured as above is normally attached to an electronic device. The hooks la, la of the upper case 1 are engaged with the edges of the holes 6a formed in the printed circuit board 6, and the upper case 1 is attached to the electronic device.

A pattern 6b for receiving and transmitting data and supplying power to the semiconductor element 4 is provided on the upper surface side of the printed circuit board 6, and is in contact with the coil lid 3.

On the other hand, independent patterns 6c and 6d are provided on the lower surface side of the printed circuit board 6, and the contact terminals 5 of the detection plate 5
c and 5d, respectively.

That is, the patterns 6c and 6d are in a conductive state via the detection plate 5, and by detecting which conductive state is on the electronic device side, it is possible to detect the mounting state of the semiconductor cassette and the electronic device.

For example, which one of the contact terminals 5c and 5d of the detection plate is the other?
Alternatively, if both have poor contact with the patterns 6c and 6d, there will be a non-conduction state between the patterns 6c and 6d, and this will be detected to indicate that the semiconductor cassette is not properly installed by lighting an indicator lamp or other known method. It is possible to notify the operator on the electronic equipment side using the following technical means.

Furthermore, the present invention is capable of not only detecting the mounting state of the electronic device described above, but also identifying the type of semiconductor cassette. Namely, the third prisoner.

As shown in (I3), by incorporating detection plates 5', 5'', and 5'' having mutually different numbers of contact terminals into different semiconductor cassettes, identification becomes possible. For example, if a semiconductor cassette incorporating a detection plate 5' having contact terminals 5c, 5d, and 5e is designated as "A" and is mounted on a printed circuit board 6' of an electronic device shown in FIG. 3(A), the printed circuit board Patterns 6c, 6j, 64 formed on the lower surface side of 6'! are the contact terminals 5 of the detection plate 5', respectively.
c, 5 table, and 5e come into contact and become conductive, but the detection plate 5"
When a semiconductor cassette incorporating a semiconductor cassette (for example, this is referred to as "B") is installed, the patterns 6c and 6d are electrically connected via the contact terminals 5c and 5d of the detection plate 5".
The pattern 6e becomes non-conductive. On the other hand, if the semiconductor cassette incorporating the detection plate 5'' is set as ``C'''' and it is equipped with ?:1'', the patterns 6c and 6e are
The contact terminals 5c and 5e of ``'' are in a conductive state, and the pattern 6d is in a non-conductive state.

That is, by detecting the conduction and non-conduction states between the patterns 6d and 6e and the pattern 6c, the semiconductor power cera)A,
It becomes possible to detect types B and C. For example, the first
As shown in the table, the conductive state is "1" and the non-conductive state is 0.
The relationship between patterns 6d, 6e and pattern 6c is set as a 1-bit binary code by the electronic equipment side.A)
The types of B and C can be identified, and based on this, the operator can be notified by known technical means such as display.

Table 1 In this embodiment, for ease of explanation, identification of three different semiconductor cassettes has been described, but by increasing the number of contact terminals on the detection plate, it is also possible to identify three or more types. ml. However, in this case, the electronic equipment side performs identification using a binary code of 2 bits or more.

As is clear from the above description, according to the present invention, a conductive member having contact terminals that electrically contacts an electronic device at at least two points is provided, and a conductive state between the contact terminals is detected. This has the effect of preventing malfunctions of electronic equipment due to incorrect mounting and facilitating the selection of semiconductor cassettes.

[Brief explanation of drawings]

Figures 1 to 4 all illustrate one embodiment of the present invention; Figure 1 is an exploded perspective view showing the structure of a semiconductor cassette according to the present invention, and Figure 2 is an exploded perspective view showing the structure of a semiconductor cassette attached to an electronic device. Line AA' in Figure 1 shows the state. A cross-sectional view of the semiconductor cassette along FIG. 3 (Al, (B
) is a partial perspective view showing another embodiment. 1... Upper case 2... Lower case 3...
・Connector 4...Semiconductor element 5, 5'
,s″,5//l,,,detection plate 5c, 5d
, 5e ・-Contact terminal 1・

Claims (2)

[Claims] (1) A semiconductor cassette that stores a semiconductor element and is detachable from an electronic device, including a conductive member having a contact terminal that makes electrical contact with the electronic device at at least two points, when the semiconductor cassette is attached to the electronic device. A semiconductor cassette characterized in that the contact terminals are electrically connected. (2) The semiconductor cassette according to claim 1, wherein the electrical connection state between the contact terminals is detected on the electronic device side.