JP2871269B2 - Low power subscriber processing circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber termination device, and more particularly, to a low power consumption subscriber processing device.

[0002]

2. Description of the Related Art Heretofore, this type of circuit has performed the same processing irrespective of whether a subscriber corresponding unit is mounted or not.

[0003]

Conventionally, this type of circuit has performed the same processing irrespective of whether the subscriber corresponding unit is mounted or not, so that electric power is used for processing that does not need to be performed. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a novel low-power-consumption subscriber capable of solving the problems inherent in the prior art. An object of the present invention is to provide a processing device.

[0005]

In order to achieve the above object, a subscriber processing circuit according to the present invention comprises a mounting detection circuit which receives a mounting output of a subscriber corresponding unit as an input, and an output from the mounting detection circuit. And a first output of the pulse generation circuit, a subscriber selection circuit, an output of the subscriber selection circuit and a second output of the pulse generation circuit, and an output from the inhibition circuit. And a processing circuit that receives the received data from the subscriber corresponding unit and outputs the transmitted data.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a preferred embodiment of the present invention.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is an operation timing chart of the present invention.

The present embodiment is a subscriber terminating circuit which can mount 10 subscribers from subscriber corresponding units 1 to 10 (see FIG. 2) and processes data from each subscriber corresponding unit in a time-division manner. is there. In particular, when the subscriber response unit 2 is not mounted,
explain.

Referring to FIG. 1, a processing circuit 24 performs a termination process by inputting a second pulse signal group 16 necessary for processing and reception data 17 from a subscriber corresponding unit, and thereafter, transmits a result to transmission data. Send out as 18.

The mounting detection circuit 20 detects the presence / absence of mounting of the subscriber corresponding unit from the first mounting signal group 11 of the subscriber corresponding units 1 to 10, and as a second mounted signal group 12, the unmounted subscription. The level corresponding to the user response section is output as "H". Here, since the subscriber correspondence unit 2 is not mounted, the mounting detection is performed.
The circuit 20 outputs the level “H”.

[0011] The subscriber selection unit 21 includes a pulse generation circuit 2
The subscriber corresponding unit is selected by using the selection pulse 14 from 2 as a trigger, and when the input second mounting signal group 12 matches the subscriber corresponding unit at the level “H”, the level “ H ". Here, when the unsupported subscriber correspondence unit 2 is selected, the subscriber selection circuit 2
1 outputs a prohibition signal 15 of level "H" .

The inhibit circuit 23 outputs the inhibit signal 15
Is "L", the first pulse signal group 13 is output as the second pulse signal group 16 , but when the prohibition signal 15 is at the level "H", the output of the second pulse signal group 16 is prohibited. Thus, the operation of the processing circuit 24 is stopped.

[0013]

As described above, according to the present invention,
When the subscriber support unit is not mounted, the processing is not performed, so that an effect of low power consumption can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an operation timing chart of one embodiment of the present invention.

[Explanation of symbols]

 11 first mounting signal group 12 second mounting signal group 13 first pulse signal group 14 selection pulse 15 inhibit signal 16 second pulse signal group 17 reception data 18 transmission data 20 Mounting detection circuit 21 ... Subscriber selection circuit 22 ... Pulse generation circuit 23 ... Inhibit circuit 24 ... Processing circuit

Claims (1)

(57) [Claims] In a subscriber processing circuit for terminating a large number of subscribers in a time-division manner, the presence or absence of implementation is detected by inputting the mounted or unmounted outputs of a plurality of subscriber corresponding units that can be mounted or not mounted.
A mounting detection circuit output, the unit process in each subscriber corresponding portion
Selection pulse having a time interval corresponding to time and the unit
The second repetition occurring at the time interval corresponding to the processing time
A pulse generation circuit for generating one pulse signal, an output from the mounting detection circuit, and a selection signal from the pulse generation circuit.
And select the corresponding part by the selection pulse.
"H" level when an unmounted subscriber support section is selected
A subscriber selection circuit for outputting a prohibition signal of the packet, an output from the subscriber selection circuit, and the first pulse of the pulse generation circuit.
The output of the subscriber selecting circuit inputs the pulse signal is "H"
The first pulse signal when the signal is not a level inhibition signal.
As a second pulse signal to a processing circuit described later,
In the case of the "H" level prohibition signal,
The output of the second pulse signal is inhibited to operate the processing circuit.
And inhibit circuit Ru stopping the low power subscriber processing circuit characterized by comprising a processing circuit for an input and outputs the transmission data to the reception data from the output and the subscriber corresponding portion from the inhibit circuit.