CREDIT CARD OPERATED CELLULAR FIG. 10 shows a contact assembly used on the interface
PHONE assembly of the present invention;
FIG. 11 shows a cross section across the line 11—11 in
This is a continuation of application Ser. No. 08/308,521, FIG. 10;
filed Sep. 19, 1994, now abandoned, which is a 5 pjG 12 snows a CT0SS sectjon aiong ^ ^ 12__12 in
Continuation-in-part of application Ser. No. 08/291,036 filed Pig. io.
Aug. 15, 1994, abandoned.
DESCRIPTION OF THE PREFERRED
FIELD OF THE INVENTION EMBODIMENT
The present invention describes a retrofit for a cellular 10 As described herein, the presently preferred embodiment
telephone which allows the cellular telephone to accept modifies an existing cellular phone by adding an interface
input from a credit card-like device. assembly thereto to form a credit-card based cellular telephone. This interface assembly only incrementally increases
BACKGROUND AND SUMMARY OF THE me size of me cellular phone, but enables additional func
INVENTTON 15 fions to be carried out, and also enables a credit card or debit
The electronics miniaturization revolution has led to a card reading operation. While the description given herein
significant increase in the number of cellular phones in describes credit card reading by a magnetic reader, it should
current use. Cellular phones have the advantage of easy be understood that debit cards, ATM cards, holographic
transportability—they can go wherever the user goes and „ image-retaining cards, and other similar readings could be
can be located in places where wired phones would be carried out by the reader, which could be magnetic, optical,
impractical. or &ny other type of reader. All of these aspects are intended
One of the primary considerations of cellular phones is t0 156 mciu(k<1 herein
miniaturization: the telephone must be small enough to be ^ modified cellular phone is shown in FIGS. 1-3. The
easily portable. However, a telephone which requires the 25 ^S"131 Phone on which ^ preferred embodiment is based
user to pay for the calls typically has not been easily is an ola Phone n*** ^ 0la Electronics. Any similar
susceptible of miniaturization. Pay phones require media- telephone could, however, be modified in a similar way.
nisms through which the user can enter the payment Basic P31*5 of tne telephone include the telephone receiver
information—and mis increases the size of the resulting uo- me telephone transmitter 112 and keypad 114 on front
nackaee. TM surface 20®- Antenna 116 transmits the cellular information.
It is accordingly an object of the present invention to provide a credit card-operated cellular phone which is small.
The cellular phone operates using power from battery 120 attached to rear surface 202, or from power supplied through
," "u ♦T —r ■ 71 a connector 124. In the unmodified telephone, the battery
easy to assemble, but yet accepts input from a a edit . . . .. . - K „„ . .'
j. . . . 1 j j J 120 is connected directly to the rear surface 202 of telephone
card-type device such as a credit card or a debit card. . . „, ,.c J... . , r,
body 100. The modified telephone has a connection from
Cellular phones of the non-pay type are made in mass 35 battery 120 to interface assembly 130, which connects to the
production. The present technique allows modifying these rear surface 202 of telephone body 100.
usually-made cellular phones to change them into credit card ^ ... m ^ a ^ ^
operated telephones. It is an object of the present invention s]ot m fl ^ sidg surface ^ *
to define carry out such a modification. wMch a ^ car(J ^ ^ s]i± The credit ^ is slid ^
The present invention teaches a specific credit card oper- direction such that the credit card's Mormation-containing
ated cellular telephone, that includes mechanical structures stripe preferably a magnetic stripe, comes into contact with
enabling entry of credit card information, and has a location a card reader head 134. The slot is formed with inside
for a specific interface board which enables modification of surfaces 136 and 138 between which the card stripe can be
the circuitry of a standard cellular telephone to include a slid. A bottom surface 140 delineates the precise location of
credit card module therein. This interface assembly includes me car(i, which places the magnetic stripe into the proper
a credit card reader, an interface circuit board, and other registration contact with the reading head 134.
associated circuitry. ^ surfaces 136 aad m include tapered distal portions
BRIEF DESCRIPTION OF THE DRAWINGS at *X)t^1 toP bottom ends 142 and 144 which increases a
50 distance between the surfaces 136 and 138. These tapered
Detailed drawings of the present invention are shown in locations allow the card to be more easily positioned into the
the attached Figures, in which: slot.
FIG. 1 shows a front view of the modified cellular The battery is held onto the interface assembly 130 with
telephone according to the present invention; a clip assembly 150. The battery 120 is the same battery
FIG. 2 shows a side view of this cellular telephone; 55 which was used in the original telephone, and the original
FIG. 3 shows a bottom view of the cellular telephone; telephone also includes a clip assembly 152 therein.
FIG. 4 shows an assembly view showing the unmodified However, this clip assembly 152 is not used, and instead a
cellular telephone connected to the interface assembly; duplicate clip assembly 150 holds the battery 120 into place.
FIG. 5 shows the battery as disconnected from the inter- J** electrical operation of the credit card-operated tele
face assembly 60 Pnone 15 somewhat different than the operation of the usual
telephone. The usual telephone bills all calls directly to the
FIG. 6 shows the interface assembly; f iU ^ . , -5 . . ^ .
J owner of the telephone. By simply operating the telephone.
FIG. 7 shows a cross section of the interface assembly ^ ceUular system can determine to whom the call should be
along the line 6—6 in FIG. 6; billed. The credit card telephone system requires a modifi
FIG. 8 shows the interface assembly; 65 cation to the basic system to enable billing. In the system
FIG. 9 shows a cross section along the line 9—9 in FIG. described in application Ser. No. 08/291,036, the disclosure
8; of which is herewith incorporated by reference, the interface