Telephone information displaying device
First Claim
1. A telephone set capable of receiving not only successive ringing signals from a telephone exchange but also, between successive ringing signals, a coded signal representative of the incoming telephone number of a calling party and capable of generating a coded signal representative of the outgoing telephone number of a called party (Subscriber-A) who is the operator of said telephone set, which telephone set comprises:
- a hook switch which is in a first position when the handset of said telephone set rests thereon (on-hook) and is in a second position when the handset is raised (off-hook);
a display device for displaying incoming and outgoing telephone numbers, said display device comprising multiposition display means (IC-2-IC-3, C9-IC32, DT1-DT12) responsive to said coded signals, for displaying in positional order numerals represented by said coded signals;
pulse generating means operatively associated with said display means for generating a pulse in response to a minimum pause which is provided for applying each coded signal to said multiposition display means one digit by one digit in shifting function;
first circuit means (NL-CDS, LT, IRC, Q3) operatively connected to said display means and responding to ringing signals from a telephone exchange when said hook switch is in said first position, to apply a coded signal representative of the telephone number of said calling party to said multiposition display means;
second circuit means (IC-100, D20-D23) operatively connected to said display means for applying thereto a coded signal representative of the telephone number of a subscriber (Subscriber-B) which is dialed by a subscriber (Subscriber-A) who has picked up the handset of said telephone set, when said hook switch is in second position; and
third circuit means (IC-1, IC47, IC-49, etc.) operatively connected to said display means for clearing said coded signal representative of the telephone number of said calling party or said subscriber (Subscriber-B) which has been displayed on said display means, when said telephone set receives a new ringing signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A calling party'"'"'s telephone number displaying device in which, while the telephone set of a subscriber is ringing in response to calling signals from a telephone exchange office, the telephone number of a calling party and information are displayed on digital display units at high speed before lifting the handset. Accordingly, the subscriber can determine whether or not he should answer the call before picking up the handset. Thus, his privacy can be protected from a variety of telephone troubles such as wrong number and nuisance calls. The display is maintained as it is even if the handset is put back after the talk but it will be cleared automatically upon reception of the next call to display the telephone number of the next calling party. When the subscriber picks up the handset to make a call, the internal circuit is automatically changed to display a telephone number dialed by him.
66 Citations
12 Claims
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1. A telephone set capable of receiving not only successive ringing signals from a telephone exchange but also, between successive ringing signals, a coded signal representative of the incoming telephone number of a calling party and capable of generating a coded signal representative of the outgoing telephone number of a called party (Subscriber-A) who is the operator of said telephone set, which telephone set comprises:
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a hook switch which is in a first position when the handset of said telephone set rests thereon (on-hook) and is in a second position when the handset is raised (off-hook); a display device for displaying incoming and outgoing telephone numbers, said display device comprising multiposition display means (IC-2-IC-3, C9-IC32, DT1-DT12) responsive to said coded signals, for displaying in positional order numerals represented by said coded signals; pulse generating means operatively associated with said display means for generating a pulse in response to a minimum pause which is provided for applying each coded signal to said multiposition display means one digit by one digit in shifting function; first circuit means (NL-CDS, LT, IRC, Q3) operatively connected to said display means and responding to ringing signals from a telephone exchange when said hook switch is in said first position, to apply a coded signal representative of the telephone number of said calling party to said multiposition display means; second circuit means (IC-100, D20-D23) operatively connected to said display means for applying thereto a coded signal representative of the telephone number of a subscriber (Subscriber-B) which is dialed by a subscriber (Subscriber-A) who has picked up the handset of said telephone set, when said hook switch is in second position; and third circuit means (IC-1, IC47, IC-49, etc.) operatively connected to said display means for clearing said coded signal representative of the telephone number of said calling party or said subscriber (Subscriber-B) which has been displayed on said display means, when said telephone set receives a new ringing signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A display device for displaying a coded signal, comprising:
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display means for displaying a telephone number represented by coded signals; first circuit means operatively associated with said display means (NL, CDS, IC-53, IC-54, IC-1, IC-47, IC-49) for clearing a telephone number displayed on said display means, in response to the arrival of a calling signal or a pulse similar to said calling signal; second circuit means operatively associated with said display means (LT, IRC, Q3) for receiving and shaping a coded signal representative of the telephone number of a calling party when the hand-set of a telephone set provided with said display device rests on the hook switch of said telephone set, and after checking whether or not said coded signal is correct, applying said coded signal to said display means; third circuit means operatively associated with said display means (IC-100, D20-23, IC-66, etc.) for coding a telephone number (of Subscriber-B) which is dialed by a called party (Subscriber-A) into a coded signal, and applying said coded signal to said display means by switching said second circuit means in association with the hook switch of said telephone set; and means (IC-70) for generating a start pulse in response to a minimum pause which is provided for shifting said coded signal of said calling party or subscriber (Subscriber-B). - View Dependent Claims (8, 9, 10, 11, 12)
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Specification