Horology: time measuring systems or devices – Cases – Wrist worn
Patent
1992-12-17
1994-10-11
Roskoski, Bernard
Horology: time measuring systems or devices
Cases
Wrist worn
368 10, 368 41, 368223, G04B 3700
Patent
active
053553527
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electronic device, and more particularly, to an electronic device so designed that an external memory, which has various pieces of data and programs stored therein and contains a control circuit or the like, can detachably be installed in this device.
2. Description of the Related Art
In an electronic device, particularly, a portable electronic device, such as an electronic notebook designed to be capable of storing telephone number data, address data, schedule data, etc., an internal memory cannot have a large memory capacity, limited by the portability and cost of the device.
In this respect, electronic devices designed to permit detachable installation of an external memory thereto have been proposed. Among them is, for example, a type which allows an IC card, a ROM pack, CD (compact disk) or the like to be detachably attached to the electronic devices.
This type of an electronic device that permits detachable installation of an external memory thereto is so designed as to permit different data and programs of different purposes (dictionary, name cards management, etc.) to be stored in different external memories and allow a user to change the installed external memory according to the purpose.
In such a conventional electronic device, a memory retaining section for accommodating the external memory is formed in the body case of the device, and is to be generally covered with a cover after the external memory is retained in that memory retaining section.
To provide the space for the cover, the conventional electronic device that is demanded to be compact has a retaining section for an external memory formed in a free or unused area on the side, bottom or top of the body case.
In this conventional electronic device, with external memory retaining section formed on the side or bottom of the body case, it is inevitable that a user should the position of the electronic device or turn the device upside down to install or detach an external memory. This work of installation and detachment of an external memory is troublesome and deteriorates the usability of such an electronic device.
If the external memory retaining section is formed on the top of the body case, however, it is inevitable to restrict the sizes of a key input section and a display section or other members, which are normally provided on the top of the body case. This design requires that keys be made smaller or the display section be designed smaller, which is not desirable in view of good operability and high visibility of information.
In the conventional electronic device, the external memory and the retaining section have a predetermined positional relationship such that the external memory cannot electrically be connected to the body case unless the external memory is placed in a predetermined state in the retaining section. This conventional structure necessitates that the user should check the positional relation every time when placing the external memory in the retaining section, taking time in replacing the external memory with another one.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an electronic device which does not have the aforementioned shortcomings, and is therefore designed to facilitate the installation and detachment of an external memory as well as ensure the effective use of the surface space of the body case.
To achieve this object, according to the present invention, there is provided an electronic device for permitting detachable installation of an external storage medium, comprising an external storage medium for storing data; a body case formed with a retaining section for accommodating the external storage medium; a cover member so attached to the body case as to open and close the retaining section, and hold the external storage medium retained in the retaining section when closed, the cover member provided with an optical display device; and electronic circuitry means for receiving data sto
REFERENCES:
patent: 5181192 (1993-01-01), Paratte et al.
Kita Kazunori
Kobayashi Tuneo
Suzuki Satomi
Casio Computer Co. Ltd.
Roskoski Bernard
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