Electrical card device having EMI shield

Details Electrical card device having EMI shield Electrical card device having EMI shield

1998-12-15

2001-06-19

Abrams, Neil (Department: 2839)

Electrical connectors

Electromagnetic or electrostatic shield

Shielding individually surrounding or interposed between...

C361S737000

Reexamination Certificate

active

06247968

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an electrical card device, and more particularly to an electrical card device having an EMI shield for ensuring noiseless signal transmission.
DESCRIPTION OF THE PRIOR ART
Mini-notebook and palmtop computers are newly developed portable devices which are smaller than notebook computers. However, the small size makes it difficult to find a location on a sidewall thereof to install input/output ports. In light of this, the capacity for connecting to peripherals has been greatly hindered. Basically, the mini-notebook and palmtop computers are equipped with a receiving slot for insertion of a PCMCIA card. In order to expand its capacity, each PCMCIA card is provided with a receptacle connector opposite a plug connector which connects a mating connector within the receiving slot. Accordingly, mini-notebook and palm computers may connect with other peripherals, such as a monitor or a printer. U.S. Pat. Nos. 5,207,586, 5,244,397, and 5,330,360 disclose such I/O cards.
However, the thickness of the PCMCIA card is too small to install a connector which is compatible with existing peripherals, such as a D-sub connector of the printer. As a result, the usage of the mini-notebook and palmtop computers is limited. Even existing PCMCIA cards are equipped with an EMI shield, noiseless signal transmission can not be ensured when connected to a monitor.
SUMMARY OF THE INVENTION
An objective of this invention is to provide an electrical card device suitable for connecting a mini-notebook computer to a peripheral device.
Another objective of this invention is to provide an electrical card device having an EMI shield for ensuring noiseless, high-speed signal transmission.
In order to achieve the objectives set forth, an electrical card device in accordance with the present invention includes a dielectric housing forming a first frame portion and a second frame portion extending from a side of the first frame portion. The first frame portion is mounted with a first connector for connecting with a connector of a peripheral device, and the second frame portion is provided with a second connector for connection with a PCMCIA card connector within a receiving slot of a palmtop computer. An EMI shield is assembled to the housing for ensuring high speed, noiseless signal transmission.
These and additional objects, features, and advantages of the present invention will become apparent after reading the following detailed description of the preferred embodiment of the invention taken in conjunction with the appended drawings.


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