Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A transceiver for applying signals to and receiving signals from a transmission line (114), characterized by: a) transmitter means (44, 46, 47, 112) for applying a first type of signal having a first frequency to the transmission line (114); b) first receiver means (34, 36, 38, 39, 40, 42) for receiving said first type of signal having said first frequency from the transmission line (114); and c) second receiver means (22, 20, 28, 30, 32) for receiving a second type of signal having a second frequency from the transmission line (114), said second type cf signal being present on the transmission line concurrently with the first type of signal.
Claim 2
Dependent Claim
109 words
A transceiver for applying signals to and receiving signals from a transmission line (114), characterized by: a) transmitter means (44, 46, 47, 112) for applying a first type of signal having a first frequency to the transmission line (114); b) first receiver means (34, 36, 38, 39, 40, 42) for receiving said first type of signal having said first frequency from the transmission line (114); and c) second receiver means (22, 20, 28, 30, 32) for receiving a second type of signal having a second frequency from the transmission line (114), said second type cf signal being present on the transmission line concurrently with the first type of signal.
Claim 3
Dependent Claim
121 words
The transceiver of claim 1, characterized in that d) a coupling transformer (112) has a transmission line winding (116) and a transceiver winding (118), e) the driver transmitter means (44, 46, 47) are coupled to the transceiver winding (118) for driving the first type signal having a first frequency onto the transmission line(114); f) the first receiver means (34, 36, 38, 39, 40, 42) are coupled to the transceiver winding (118) for receiving first type signals having said first frequency; and g) the second receiver means (22, 20, 28, 30, 32) are coupled to the transceiver winding (118) for receiving the second type signal having a second frequency which is carried by the transmission line concurrently with the first type signal.
Claim 4
Dependent Claim
132 words
The transceiver of claim 2 for applying substantially square wave data signals having a first frequency to a coaxial cable (114) and for receiving data signals carried by the coaxial cable and quasi-sinusoidal timing signals having a second frequency, which data and timing signals Are carried concurrently by the coaxial cable, characterized in that : h) the transmitter means (44, 46, 47) induce a voltage across the transmission line winding (118) to apply data signals to the coaxial cable (114); i) the first receiver means (34, 36, 38, 39, 40, 42) receives and reshapes data signals present in voltages across the transceiver winding (118); and j) the second receiver means (22, 20, 28, 30, 22) receives, amplifies and reshapes the quasi-sinusoidal timing signals into substantially square wave signals of the second frequency.
Claim 5
Dependent Claim
124 words
The transceiver of one of the preceding claims, characterized in that k) the first type signals are substantially square wave Manchester encoded data signals having a first frequency and a predetermined maximum peak to peak voltage and the second type signals are quasi-sinusoidal timing signals, said timing signals having a second frequency, which data and timing signals are present at the same time on the coaxial cable; 1) the first data signals receiver (34, 36, 38, 39, 40, 42) includes a driver circuit (42) for making the data signals available as an output of the transceiver; and m) the timing signal receiver (22, 20, 28, 30, 32) includes a driver circuit (32) for making the timing signals available as an output of the transceiver.
Claim 6
Dependent Claim
19 words
The transceiver of Claim 3 or 4, characterized in that the frequency of the data signals is 5.0 MHz.
Claim 7
Dependent Claim
17 words
The transceiver of Claim 5, characterized in that the frequency of the timing signals is 12.5 KHz.
Claim 8
Dependent Claim
67 words
The transceiver of one of the claims 4 to 6, characterized by a loop back circuit (50, 40) which when enabled in response to a loop back enabling signal applies data signals applied to the transceiver directly to the driver circuit (42) of the data signal receiver (34, 36, 38, 39, 40, 42), said loop back enabling signal when present disabling the transmitter circuit (44, 46, 47).
Claim 9
Dependent Claim
37 words
The transceiver of one of the preceding claims, characterized in that a low pass filter (22) is connected between the transceiver winding (118) and an operational amplifier (20) of the second receiver means (22, 20, 30, 32).
Claim 10
Dependent Claim
48 words
The transceiver of claim 8, characterized in that a comparator (28) with its one input (5) is connected to the output of the operational amplifier (20), at its other input (4) receives a reference voltage and at its output delivers a square shaped version of the timing signal.
Claim 11
Dependent Claim
27 words
The transceiver of claim 9, characterized in that one shot multivibrator (30) is connected to the output of the comparator (28) for delivering a reshaped timing signal.