Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
For combination with a telephone having a ringing circuit (a, W1, W2, W, C, a') including a bell (W), a visual telephone ringing indicator generating a visible display in response to cyclical operation of the telephone bell, while rejecting electrical signals arising in said ringing circuit not destined for cyclical operation of said bell, comprising a time-based decoding circuit (4) coupled to the ringing circuit for determining if the cyclical energization of the bell corresponds to a predetermined time-based ON-OFF relationship representative only of telephone ringing signals and, only if said correspondence is established, providing an enabling output signal; a ring counter (5) providing sequential output pulses enabled by the enabling output signal from said time-based decoding circuit; optical indicating means (51-58) coupled to the output pulses of the ring counter for sequentially providing an optical indication upon enabling of the ring counter; and power supply means (6) for powering the time-based decoding circuit (4) and the ring counter (5) and providing output power matched to the number of optical indicating means enabled at any one time by said ring counter.
Claim 2
Dependent Claim
181 words
For combination with a telephone having a ringing circuit (a, W1, W2, W, C, a') including a bell (W), a visual telephone ringing indicator generating a visible display in response to cyclical operation of the telephone bell, while rejecting electrical signals arising in said ringing circuit not destined for cyclical operation of said bell, comprising a time-based decoding circuit (4) coupled to the ringing circuit for determining if the cyclical energization of the bell corresponds to a predetermined time-based ON-OFF relationship representative only of telephone ringing signals and, only if said correspondence is established, providing an enabling output signal; a ring counter (5) providing sequential output pulses enabled by the enabling output signal from said time-based decoding circuit; optical indicating means (51-58) coupled to the output pulses of the ring counter for sequentially providing an optical indication upon enabling of the ring counter; and power supply means (6) for powering the time-based decoding circuit (4) and the ring counter (5) and providing output power matched to the number of optical indicating means enabled at any one time by said ring counter.
Claim 3
Dependent Claim
56 words
Indicator according to claim 1, wherein the ring counter has count output terminals; and the optical indicating means comprises a plurality of lamps respectively connected to the respective count output terminals of the ring counter and individually lighting, and positioned adjacent each other to provide, upon individual sequential energization, a traveling or moving ribbon of light.
Claim 4
Dependent Claim
37 words
Indicator according to claim 2, including a connection (59) leading to a remote optical or acoustic indicating device and connected to one of the output terminals from said ring counter connected to one of said indicating lamps.
Claim 5
Dependent Claim
32 words
Indicator according to claim 3, wherein the remote indicating device comprises a further device as set forth in claim 1, the time-based decoding circuit (4) thereof being enabled by said connection (59).
Claim 6
Dependent Claim
52 words
Indicator according to claim 1, wherein the time-based decoding circuit (4) provides a continuous enabling output signal independent of the ON timing of the energization of the bell circuit, to bridge the intervals of energization of the bell formed by the OFF portion of the sensed cyclical signal energizing said bell (W).
Claim 7
Dependent Claim
80 words
Indicator according to claim 1, further comprising an individual discrete inductive sensor (2) galvanically separate from said bell (W) and electromagnetically coupled to the ringing circuit for detecting the alternating magnetic field upon operation of said bell and generating a voltage change in response thereto, and forming a sensed signal; and an amplifier (3) coupled to the sensor (2) and amplifying the sensed signal, the output (3a, 3b) from the amplifier providing the input to the time-based decoding circuit (4).
Claim 8
Dependent Claim
47 words
Indicator according to claim 6, wherein the optical indicating means comprises a plurality of lamps respectively connected to respective count output terminals of the ring counter and individually lighting, and positioned adjacent each other to provide, upon individual sequential energization, a traveling or moving ribbon of light.
Claim 9
Dependent Claim
85 words
Indicator according to claim 1, further comprising an additional input line (L) connected to the ring counter (5) to energize the ring counter and to modify the cycling rate to cycle at a rate different from the cycling rate upon enabling or energization from the time-based decoding circuit, whereby the additional input line (L) can provide, upon furnishing a signal thereon, an output from the optical indicating means different from the output derived therefrom when the telephone ringing circuit is enabled by a ringing signal.
Claim 10
Dependent Claim
80 words
Indicator according to claim 8, further comprising an individual discrete inductive sensor (2) galvanically separate from said bell (W) and electromagnetically coupled to the ringing circuit for detecting the alternating magnetic field upon operation of said bell and generating a voltage change in response thereto, and forming a sensed signal; and an amplifier (3) coupled to the sensor (2) and amplifying the sensed signal, the output (3a, 3b) from the amplifier providing an input to the time-based decoding circuit (4).
Claim 11
Dependent Claim
56 words
Indicator according to claim 9, wherein the ring counter has count output terminals; and the optical indicating means comprises a plurality of lamps respectively connected to the respective count output terminals of the ring counter and individually lighting, and positioned adjacent each other to provide, upon individual sequential energization, a traveling or moving ribbon of light.