Display pager with separate readout module
First Claim
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1. A radio receiver and detachable display module, comprising in combination:
- a radio receiver and supporting frame;
a display module housing having an opening sized to receive a character display;
a retainer plate covering said opening, said retainer plate being the exclusive means for retaining said display and other module components within said module housing;
means for slidably attaching said retainer plate to said module housing, wherein said retainer plate is placed in contact with said module housing and attached thereto by relative motion in the plane of said retainer plate;
means for slidably attaching said display module to said frame, wherein said module housing is placed in contact with said frame and attached thereto by relative motion in the plane of contact; and
a first set of interconnecting electrical contacts located on said radio receiver, and a second set of interconnecting electrical contacts located on said display module, whereby the first set of electrical contacts is engaged with the second set when the display module is attached to the frame.
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Abstract
A liquid crystal display module with self contained display decoder circuitry is attached to a radio frame with a minimum of electrical interconnections. Module assembly and attachment are both accomplished without the use of tools. Attaching the module to the frame interlocks the module to prevent accidental disassembly and places a preload force on the electrical interconnections to insure good electrical continuity. Ambient light reflection provides primary display illumination while lamps, controlled by an integral switch, provide secondary illumination.
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Citations
10 Claims
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1. A radio receiver and detachable display module, comprising in combination:
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a radio receiver and supporting frame; a display module housing having an opening sized to receive a character display; a retainer plate covering said opening, said retainer plate being the exclusive means for retaining said display and other module components within said module housing; means for slidably attaching said retainer plate to said module housing, wherein said retainer plate is placed in contact with said module housing and attached thereto by relative motion in the plane of said retainer plate; means for slidably attaching said display module to said frame, wherein said module housing is placed in contact with said frame and attached thereto by relative motion in the plane of contact; and a first set of interconnecting electrical contacts located on said radio receiver, and a second set of interconnecting electrical contacts located on said display module, whereby the first set of electrical contacts is engaged with the second set when the display module is attached to the frame. - View Dependent Claims (2, 3, 4, 5)
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6. A radio receiver and detachable display module, comprising in combination:
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a radio receiver and supporting frame, said frame being substantially a rectangular parallelepiped having depth, width and height, said depth being less than said width and said height being approximately ten times said depth, thereby forming first and second sides having depth and height, a top and a bottom having depth and width, and a front and a rear face having width and height, said frame having a male dovetail and a keyhole, both located on said first side of said frame; a display module housing containing a character display, said module housing being located on said first side of said frame, said module housing having a first and a second pair of substantially parallel walls, said first pair of walls being longer than said second pair, said first pair of walls having a first plurality of slots, said module housing further having a female dovetail and a protruding key, said female dovetail and said key being suitable for receiving respectively said male dovetail and said keyhole, whereby the module housing may be slidably attached to the frame; a first set of interconnecting electrical contacts located on said radio receiver, and a second set of interconnecting electrical contacts located within said module housing, whereby said first set of electrical contacts is forcibly engaged with the second set when the module housing is attached to the frame; and a retainer plate for retaining said display and other module components within said module housing, said retainer plate having a first plurality of tabs protruding from said retainer plate, whereby inserting said first plurality of tabs in said first plurality of module housing slots and sliding the retainer plate in a direction parallel to said first pair of parallel walls, attaches the retainer plate to the module housing. - View Dependent Claims (7, 8, 9, 10)
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Specification