Local status monitoring of taps in a cable television system

• US 6,130,703 A
• Filed: 02/10/1998
• Issued: 10/10/2000
• Est. Priority Date: 02/10/1998
• Status: Expired due to Term

• Current Assignee: Scientific-Atlanta LLC (Cisco Systems, Inc.)
• Original Assignee: Scientific-Atlanta Incorporated (Cisco Systems, Inc.)
• Inventors: Su, Sou-Pen, Jenkins, Joel P., Spriester, Bart F.
• Primary Examiner(s): Flynn, Nathan
• Assistant Examiner(s): BUI, KIEU OANH T
• Application Number:
  US09/021,712
• Time in Patent Office: 973 Days
• Field of Search: 348/6, 348/12, 348/13, 348/192, 348/193, 455/3.1, 455/5.1, 455/6.1, 455/4, 455/70, 324/133, 324/542, 340/638, 340/641, 340/642, 340/654, 340/652, 379/32, 379/29, 379/7, 358/86, 358/114
• US Class Current: 725/127
• CPC Class Codes: H04N 17/00 Diagnosis, testing or measuring for television systems or their details
• CPC Class Codes: H04N 7/104 Switchers or splitters

Abstract

A tap (125) for use in a cable television system (100) includes an incoming port (202) for receiving an incoming signal from a head end section (105) and at least first and second outgoing subscriber ports (225, 230) for transmitting outgoing signals to system subscribers. The first and second subscriber ports (225, 230) can be enabled or disabled, depending upon whether cable service is to be provided from a particular port. The tap (125) also includes light sources (250, 260) located on the body of the tap (125) to indicate statuses, i.e., enabled or disabled, of the subscriber ports (225, 230).

Claims

1. A tap for use in a cable television system, the tap comprising:

an incoming port for receiving an incoming signal;

first and second outgoing ports for transmitting outgoing signals, wherein each of the first and second outgoing ports can be enabled for transmission of the outgoing signals or disabled to prevent transmission of the outgoing signals;

a memory for storing operational parameters of the tap, including a status of each of the first and second outgoing ports as either enabled or disabled;

a controller coupled to the first and second outgoing ports and to the memory for enabling and disabling the first and second outgoing ports and for automatically updating the statuses of the first and second outgoing ports in the memory in response to any status changes; and

a display device coupled to the first and second outgoing ports for displaying the status of each of the first and second outgoing ports as either enabled or disabled.

2. The tap of claim 1, wherein the display device provides a visual indication of the status of the first and second outgoing ports.

3. The tap of claim 2, wherein the display device comprises first and second light sources for indicating, respectively, the status of the first outgoing port and the status of the second outgoing port.

4. The tap of claim 3, wherein the first light source is activated to indicate that the first outgoing port is enabled.

5. The tap of claim 3, further comprising:

a door for covering the first and second light sources, the door moveable between an open position, in which the first and second light sources are visible, and a closed position, in which the first and second light sources are not visible.

6. The tap of claim 5, wherein the first and second light sources respectively display the status of the first outgoing port and the status of the second outgoing port in response to the door being moved into the open position.

7. The tap of claim 3, wherein the controller controls activation of the first and second light sources.

8. The tap of claim 7, wherein:

the controller receives programming signals indicating whether one of the first and second outgoing ports is to be enabled or disabled.

9. The tap of claim 7, further comprising:

a door for covering the first and second light sources, the door moveable between an open position, in which the first and second light sources are visible, and a closed position, in which the first and second light sources are not visible.

10. The tap of claim 9, wherein the first and second light sources respectively display the status of the first outgoing port and the status of the second outgoing port in response to the door being moved into the open position.

11. The tap of claim 9, further comprising:

a sensor coupled to the door and the controller for signaling the controller when the door is in the open position, in response to which the controller references the memory and activates a light source corresponding to an enabled port.

12. The tap of claim 1, wherein the first and second outgoing ports comprise first and second subscriber ports for providing subscriber drops, and wherein the tap further comprises a main outgoing port for forwarding the incoming signal to further devices of the cable television system.

13. A tap for use in a cable television system, the tap comprising:

an incoming port for receiving an incoming signal;

first and second subscriber ports for transmitting outgoing signals, wherein each of the first and second subscriber ports can be enabled for transmission of the outgoing signals or disabled to prevent transmission of the outgoing signals;

a memory for storing operational parameters of the tap, including a status of each of the first and second subscriber ports as enabled or disabled;

a controller coupled to the first and second subscriber ports and to the memory for enabling and disabling the first and second outgoing ports and for automatically updating the statuses of the first and second subscriber ports in the memory in response to any status changes; and

first and second light sources corresponding, respectively, to the first and second subscriber ports for indicating statuses of the first and second subscriber ports as either enabled or disabled.

14. The tap of claim 13,

the controller coupled to the first and second subscriber ports and the first and second light sources controls activation of the first and second light sources to indicates statuses of the first and second subscriber ports.

15. The tap of claim 13, wherein, in response to any status change in a subscriber port, the controller updates the memory without human intervention.

16. The tap of claim 15, further comprising:

a door for covering the first and second light sources, the door moveable between an open position in which the first and second light sources are visible and a closed position in which the first and second light sources are not visible.

17. The tap of claim 16, wherein the controller references the memory and activates a light source corresponding to an enabled port in response to the door being in the open position.

18. The tap of claim 13, further comprising a main outgoing port for forwarding the incoming signal to further devices included within the cable television system.

19. A cable television system, including:

a head end section for transmitting cable television signals;

at least one tap coupled to the head end section, the at least one tap including;

an incoming port for receiving an incoming signal;

first and second subscriber ports for transmitting outgoing signals, wherein each of the first and second subscriber ports can be enabled for transmission of the outgoing signals or disabled to prevent transmission of the outgoing signals;

a memory for storing operational parameters of the at least one tap, including a status of each of the first and second subscriber ports as either enabled or disabled;

a controller coupled to the first and second subscriber ports and to the memory for enabling and disabling the first and second subscriber ports and for automatically updating the statuses of the first and second subscriber ports in the memory in response to any status changes;

a main outgoing port for forwarding the incoming signal to other devices of the cable television system; and

first and second light sources corresponding, respectively, to the first and second subscriber ports for indicating statuses of the first and second subscriber ports as either enabled or disabled; and

a communication medium coupled between the head end section and the incoming port of the at least one tap for providing the cable television signals thereto.

20. The cable television system of claim 19, wherein the controller coupled to the first and second subscriber ports and the first and second light sources controls activation of the first and second light sources to indicates statuses of the first and second subscriber ports.

21. The cable television system of claim 19, wherein, in response to any status change in a subscriber port, the controller updates the memory without human intervention.

22. The cable television system of claim 21, wherein the at least one tap further comprises:

a door for covering the first and second light sources, the door moveable between an open position in which the first and second light sources are visible and a closed position in which the first and second light sources are not visible.

23. The cable television system of claim 22, wherein the controller references the memory and activates a light source corresponding to an enabled port in response to the door being in the open position.