Address code arrangements

• US 4,691,339 A
• Filed: 08/09/1985
• Issued: 09/01/1987
• Est. Priority Date: 09/04/1984
• Status: Expired due to Fees

• Current Assignee: STC PLC (f/k/a Standard Telephones and Cables)
• Original Assignee: STC PLC (f/k/a Standard Telephones and Cables)
• Inventors: Redman, Michael J., Wong, Ming K., Sugden, Peter R.
• Primary Examiner(s): Lev, Robert
• Application Number:
  US06/764,114
• Time in Patent Office: 753 Days
• Field of Search: 179/6.3 CC, 179/2 CA, 179/2 EA, 235/441, 235/492, 235/495, 235/494, 379/61, 379/62, 379/99, 379/91
• US Class Current: 455/558
• CPC Class Codes: H04M 1/727 Identification code transfer arrangements
• CPC Class Codes: H05K 1/0266 Marks, test patterns or identification means
• CPC Class Codes: H05K 1/029 having a programmable lay-out, i.e. adapted for choosing between a few possibilities
• CPC Class Codes: H05K 1/117 Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
• CPC Class Codes: H05K 3/222 Completing of printed circuits by adding non-printed jumper connections printed jumper connections H05K3/4685
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits

Abstract

In a cordless telephone it is usual for the base station and the handset to be allotted a single address code to provide "dial security". Such an address code is usually programmed in during manufacture. In the present arrangement, a printed circuit board (2) in the handset or base station bears a single common track (5) and a set of tracks (6) adjacent to it. Each cordless set'"'"'s two units also has a label (1) with a set of conductive strips on it which is secured to the board so as to connect the common track and a selection of the individual tracks. Thus energization of the common track (5) energizes a selection of the tracks (6) according to the address.

When a number is to be sent the address code defined by the handset'"'"'s label is sent to the base station and compared with that for the base station'"'"'s label. If they agree, "dialling" is permitted.

The label can also be wrapped round the edge of the board or plugged into a socket on the board.

Claims

1. An addressing arrangement for use in the handset and/or in the base station of a cordless telephone set, which arrangement includes:

(a) a circuit board having a contact field formed by a single strip-like conductive track to which a power supply is connected when the arrangement is in use and a set of conductive tracks on the board each of which terminates adjacent to the single strip-like track, the tracks of said set extending substantially orthogonally to the single strip-like track;

(b) label means of insulative material for carrying a set of generally parallel conductive strips, the pattern of said strips on the label means corresponding to an identification address for the handset or base station; and

(c) means to secure the said label means to the circuit board of the handset or base station such that the conductive strips on the label connect the single strip-like track on the board to a selection of the conductive tracks on the board, which selection corresponds to the identification address of the handset or base station;

wherein when the handset or base station with the addressing arrangement is in use the single strip-like track is energized so that the said selection of the tracks on the circuit board which corresponds to the address is energized, and wherein the establishment of a connection is only effected if the address of the handset and the base station correspond.