KR960036656A - Distributed subscriber premises and power monitoring device for optical cable television - Google Patents

Abstract

In the present invention, a distributed subscriber premises device for an optical cable television is provided to a distributed subscriber premises device for an optical cable television, which enables a cable television service to be independently received from each other in a separate room away from the subscriber premises when receiving the service using the optical cable television. In general, subscriber home devices that receive services through an optical subscriber network generally have a structure, and when a person receives a CATV or stereo service in a different room, a lot of problems occur in user registration. In the present invention, to solve this problem, the subscriber premises device for the photoelectric conversion and demultiplexing is installed in the inlet part of the home Device and It is possible to receive CATV service independently from each other in a separate room by separating and configuring each service as maximum of 3 devices that are provided to users, and backup time is extended by detaching and installing backup battery. It is possible to miniaturize the subscriber device.

The optical cable television power monitoring device of the present invention relates to a power monitoring device in an optical cable television system distribution device, and more particularly to a device for detecting a power supply state of a distribution device and transmitting it to a maintenance management center. After converting the power status value to digital, it should be sent to the maintenance center at a remote place to check whether there is an error.There is no circuit to send the digital conversion value to the maintenance center, so it cannot be monitored. In order to solve the problem that the reliability of the system is deteriorated, the present invention detects the voltage state of the power supply of the distribution device, converts it into a digital signal, and sends it to the program of the maintenance management center through a serial communication line. Allows monitoring of supply voltage status This makes the system easier to maintain, and even if the program is modified, it can generate data in any format required by the maintenance management center, and can actively cope with circuit modifications for improving the function of the system.

Description

Distributed subscriber premises and power monitoring device for optical cable television

As this is a public information case, the full text was not included.

2 is a block diagram of the optical cable television distributed subscriber premises device of the present invention.

Claims (7)

11. A method of constructing a subscriber premises for an optical cable television that receives various services through an optical subscriber network, comprising: photoelectric conversion means for photoelectric conversion and demultiplexing an optical signal from a distribution device; Decentralized subscriber premises for optical cable television comprising inputting the demultiplexed signal from the photoelectric conversion means and separating it into a subscriber device providing a service through a television or stereo audio or a telephone or an ISDN terminal according to a user's selection Device and power monitor. 2. The apparatus of claim 1, wherein the photoelectric conversion means comprises: optical transmission and reception means for converting an optical signal of a multiplexed B-channel analog telephone signal and a 2B + D narrowband ISDN signal from a distribution device into an electronic signal; The de-multiplexing station inputs 155Mb / s data from the optical transmission / reception means and demultiplexes the 3-channel data of 44.736Mb / s, the B-channel or 2B + D channel data of 2Mb / s, and the maintenance / repair data of 64Kb / s Multiplexing means; A phase-locked key loop for generating 44.736 MHz and 4 MHz clocks from the 155 Mb / s clock inputted from the optical transmission / reception means to synchronize the demultiplexing means; Maintenance / maintenance means for identifying and transmitting the status of the subscriber device to the distribution device; Central processing means for controlling said circuits while storing state and information of a subscriber device; External matching means for communication signal connection between the central processing means and the subscriber device; Optical cable comprising a DC power supply means for supplying a current to operate the circuit and a backup battery means used as an auxiliary power supply when the power supply by the DC power supply means is stopped is installed in the premises Distributed subscriber premises equipment for television. 2. The apparatus of claim 1, wherein the subscriber device comprises: B-panel matching means for inputting B-channel data while synchronizing to a clock of 4 MHz to supply voice signals and current to tip and ring terminals connected to the telephone; 2B + D channel matching means for inputting 2B + D channel data in synchronization with a 4MHz clock to enable S-matching with a narrowband ISDN terminal through an ISDN terminal; Television / stereo audio decoding means for inputting one channel data of 44.736 Mb / s of three channel data in synchronization with a clock of 44.736 MHz to provide a video / audio service or a stereo audio service; User matching means for matching signals received from an external remote controller with a user panel; Central processing means for controlling the circuits while storing the state; External matching means for connecting a communication signal between the central processing means of the photoelectric conversion means and the central processing means; A distributed subscriber premises for an optical cable television, comprising: a DC power supply means for supplying a current to operate the circuits; and a backup battery means used as an auxiliary power supply when the power supply is stopped by the DC power supply means. Device. 2. The apparatus of claim 1, further comprising: television / stereo audio decoding means for providing video / audio service or stereo audio service by inputting one channel data of three-channel data of 44.736MHz while being synchronized with a clock of 44.736MHz; User matching means for matching signals from the remote controller and the user panel input from the outside; Central processing means for controlling and storing a state of said circuits; External matching means for communication signal connection between the central processing means of the photoelectric conversion means and the central processing means; And a direct current power supply means for supplying a current to operate the circuits. 2. The distributed subscriber premises device according to claim 1, wherein the subscriber devices are configured as a maximum of three separately and receive services independently. In configuring a power monitoring device in an optical cable television system distribution device, the analog digital converter 60 receives a voltage level of a 48V line from the distribution device and digitalizes the analog signal, and the digital signal of the analog digital converter 60 is data. Inputs data containing the state of the power supply voltage from the pyramid-embedded microprocessor 90 and the microprocessor 90 that control the analog digital converter 60 while determining the state of the power supply voltage by comparing with a reference value through a bus. Optical cable television power monitoring device comprising a serial communication line 100 for transmitting to the maintenance center (110). The optical cable television power supply monitoring device according to claim 6, wherein the serial communication line unit is an RS232C interface. ※ Note: The disclosure is based on the initial application.