CA1177139A - Antenna system transmission apparatus - Google Patents
Antenna system transmission apparatusInfo
- Publication number
- CA1177139A CA1177139A CA000354776A CA354776A CA1177139A CA 1177139 A CA1177139 A CA 1177139A CA 000354776 A CA000354776 A CA 000354776A CA 354776 A CA354776 A CA 354776A CA 1177139 A CA1177139 A CA 1177139A
- Authority
- CA
- Canada
- Prior art keywords
- address
- remote station
- control
- antenna wire
- single channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
- H04Q9/14—Calling by using pulses
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Selective Calling Equipment (AREA)
- Small-Scale Networks (AREA)
Abstract
ABSTRACT
A transmission system having a central station for transmitting digital data over an existing antenna wire sys-tem within a building to at least one remote station is disclosed having an address and control generator at the central station for generating digital address and control information, a modem for connecting the address and control generator to the antenna wire system for supplying to the system the address and control information, a similar modem at the remote station for connection to the antenna wire system, an address matcher connected to the modem at the remote station for comparing the address generated by the address and control generator to an address pre-established for the remote station, and a load controller connected to the address matcher and made responsive to the control information when there is a match between the address transmitted by the address and control generator and the pre-established address.
A transmission system having a central station for transmitting digital data over an existing antenna wire sys-tem within a building to at least one remote station is disclosed having an address and control generator at the central station for generating digital address and control information, a modem for connecting the address and control generator to the antenna wire system for supplying to the system the address and control information, a similar modem at the remote station for connection to the antenna wire system, an address matcher connected to the modem at the remote station for comparing the address generated by the address and control generator to an address pre-established for the remote station, and a load controller connected to the address matcher and made responsive to the control information when there is a match between the address transmitted by the address and control generator and the pre-established address.
Description
1~ 713~ ~
ANTENNA SYSTEM TR~NSMISSION P.PPARATUS
BACKGRoUND OF THE INVEN~ION
This invention relates to the transrnission of digital data over a communication channel and, more particularly, to the transmission of such data over antenna wire systems which pre-exist in buildings.
Energy management, and fire and security supervi-sion, are today being controlled by computer data processing techniques. For fire and security supervision, ~uch techniques allow a high degree of security in monitoring the fire and security points within a building to insure that all alarms will be brought to the attention of the security personnel in the building and that all lines running between the central station where the personnel are located and the remote fire and security sensing points are supervised for attempted breaches. In energy management systems~ these techniques also allow the control of a building's air conditioning and energy consuming loads in the most effi-cient manner in accordance with changing conditions~ Such ~schedules as optimum startup, load cycling and load shedding can reduce the total energy consumption of a building.~
However, it is much~easier to install such systems ;i.n newly constructed buildings than in existing buildinys and even then the cost of installing wire dedicated specifi-cally to the transmission of information between the central station and its remote stations adds materially to the over~
all cost of the systems. In small buildings, the added cost of wiring can mean the difference between installing such energy saving and security equipment or suffering the high cost from uslng unnecessary energy and potential losses from thefts and burglaries.
7'7139 Moreover, in such buildings as motels, hotels and the like, guests often check out of their rooms without turning off lights, reducing the heating or cooling load by appropriate adjustment of the thermostat, or shutting off electrical appliances such as radios and televisions. There is a substantial amount of energy being wasted to run these loads even though the room is not occupied.
In order to take advantage of the energy savings attendant with energy management systems, especially in existing buildings, it is desirable to develop a system which requires no extra wiring between the central station and its remote stations. Wireless transmission of radio frequency signals suffers ~he disadvantages of governmental regulations and expensive signal transmitting and receiving equipment. It has been suggested that ~he power lines run ning throughout the building be-used to carry the digital nformation necessary for energy managemellt and fire and security supervision. However, power line carrier devices are susceptible to noise on the line and randomly cycle the controlled loads in an energy wasteful mannerD It has further been suggested that the ~elephone lines running hroughout a building complex can be used to carry this nformation~ However, no one has suggested using the anten-na wiring system that runs from the rooftop antenna to near-ly every room within such buildings as hotels and motels.
Thus,~ the ob~ect of this invention is to transmit digital information useful in energy management or fire and security supervision and the like over the existing antenna wiring system running throughout a building in order to eliminate the extra costs associated with running wiring dedicated specially for that purpose.
`~ \ ~.3L~7'713~
SUMMARY OF THF INVENTION
Therefore, the invention is directed to a transmission : :
system having a central station for transmitting data over an existing antenna wire system within a building to at least one remote station, the transmission system having an address and control generator at the central station for generating digital address and control information, a modem for connecting the address and control generator to the existing antenna wire system running throughout the building for supplying the address and control information to the antenna wire system, a modem at the remote station connected to the antenna wire system, an address matcher connected to the modem at the remote station for comparing the address generated by the address and control generator to a pre-established address for the remote station, and a load controller connected to the address matcher and re-sponsive to the control information when there is a match be- ~
tween the address transmitted by the address and control --generator and the predetermined address.
In accordance with the present invention there is 20 ~ provided a transmission system having a central station for transmitting digital data over an existing antenna wire system withln a building to at least one remote station comprising: .
an address and control generator at said central station for generating digital address and control information; a first ~.
single channel modem adapted to connect said address and control .
generator to said antenna wire system for supplying said address and control informa-tion to said antenna wire system; a second single channel modem at said at least one remote station adapted to be connected to said antenna wire system; address match means including a plurality of remote station switches arranged to specifically identify said at least one remote .
. .
station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control ~' generator to said predetermined address; and load control means connected to said address match means and made responsive to said control information when there is a match between said address transmitted by said address and control generator and said predetermined address.
In accordance with the present invention there is further provided a transmission system having a central station ;~
for transmitting digital data over an e~isting antenna wire system within a building to at least one remote station com-prising: an antenna wire system within a building; an address and control generator at said central station for generating digital address and control information; a first single channel modem connecting said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system; a second single channel modem at said at least one remote station connected to said antenna wire system; address match means including a plurality of remote station switches for specifically identifying said at least one remote station and an address matcher connected to both:said plurality of remote station switches and said second ~ single channel modem for comparing said address generated by said : address and control generator to said predetermined address; and load control means connected to said address match means and made responsive to said control information when there is a match between said address transmitted by said address and control generator and said predetermined address.
BRIEF DESC ~
These and other features and advantages will become more "~ ~
~ - 3a -7'~39 apparent from a detailed consideration of the invention when taken in conjunction with the drawings in which: ~;
Figure 1 is a block diagram of the invention; and, ~
Figure 2 i5 a detailed schematic diagram of the in- :
vention.
DETAILED DESCRIPTION
.
In Figure 1, central station 10 is connected to antenna wire system 11 running through a building such as a .
motel or hotel and may be located in the office or other con-venlent::room oi the building. Centrsl ststi~n 10 is '~
, .
',~
~ , :.
~=
A ~ - 3b -~ g f~ 7~3~ ~
conllected to ante~llla line 11 by connector l2. ~ithin the guest or other rooms of the building are located remote stations 13, 14 and 15 connected to the antenna wire system 11 by connectors 16, 17 and 18 respectively.
Central station 10 comprises an address and con-trol generator in the form of transmitter circuit 19 connected to antenna system 11 by single channel modem 20.
Transmitter 19 transmits 15 bit messages or words to remote stations 13-lSo Eleven of the bits ~ransmitted by transmit-ter 19 are comprised of the address f~r the specific remote station with which central station ~ wishes to communicate.
This address is selected by address keyboard 210 The other four bits of the message transmitted by transmitter 19 through modem 20 are selected by control input 22 which may provide, for example, start-stop functions for the loads of remote stations 13-15. Voice transmitter 23 connected to microphone 24 may also be connected to transmitter 19 for tranamitting voice messages over antenna wire system 11 to the remote stations.
Remote station 13 comprises receiver 25 connected on one side to antenna wire system 11 through single channel modem 26 and on the other side to a load such as fan 27.
Remote station ~4 comprises a receiver 28 connected to antenna wire system 11 through single channel modem 29 and also to loads 30 and 31~ Remote station 15 comprises receiver 32 connected 011 one side to antenna wire system 11 through single channel modem 33 and'on its other side to voice receiver 34 through AND gate 35. The voice receiver 34 is also connected to speaker 36.
Messages,which are constructed of an address por-tion and a control portion are transmitted by central sta-tion 10 to antenna wire system 11 and received by remote ~7'713~ ~
stations 13, 14 and 15. Receivers 25, 28 and 32 compare the address received from central station 10 with their own spe~
cifically structured address so that each remote station can determine whether it is the one selected by central station 10 to perform a control func~ion. The selected remote sta-tion will then operate on its loads according to the control instructions in the control portion of the message transmitted by central station 10. When the system is to be used in motels and hotels, ~he loads may be the heating and refrigeration units, lights, radios, televisions and the like located in the guest rooms. The~ may also be speakers, as suggested by remote station 15~ for direct oral commun;-cation with the maids cleaning the room or the guests staying in the room~ The single channel modems 20, 26, 29 r and 33 may be the same as that shown in copendin~ applica-~ tion 35 ~ 4~
~,,,,j /
~ filed on ~ay ~ on behalf of the same assignee as that of the present invention~
The details of the central station 10 and one of the remote stations 14 lS shown in Figure 2. Transmitter 19 takes the form of a 28 pin ED-ll integrated circuit ; connected as shown. The ED-ll circuits 19, 25r 28 and 32 ~ generate fifteen bit Manchester~code words from the eleven ~ ~ addre6s inputs and four control inputs~ The voice circuits 23 and 34 may be supplied under part number MC3517 by ~"L
Motorola. Pin 1 of transmitter 19 is connected to ground, a serie6 circuit comprised of resistor 51 and variable resis-tor 52 is connected between pins 2 and 3 and capacitor 53 is connected between pins 2 and 4. This RC network establishes the frequency Eor the master oscillator within integrated circuit 19~ Pin 5 is unused and pin 6 is a Start/Data Input pin connected to execute terminal 54 which, when strobed, ~ f~D~1~R t~
~ 7'7~3~ i will cause t-he address selected by the switch bank to ~e transmitted out through the single channel modem 20 to antenlla wire system 11. Pin 7 is ~he output terminal of transmitter 19 an~ is connected to the input of modem 20.
Pins 8-18 are connected to switchbank 55 which is ~he key-board 21 shown in Figure 1 and selects the address for the remote station with which central station desires to commu-nicate. Switchbank 56 is connected to pins 19-22 for selecting the control information to finish out the fifteen bit message transmitted by transmitter 19 to antenna wire system 11. This control information may include start-stop information for the loads controlled by remote stations 13-15. Pins 23-26 are unused and pins 27 (which controls whether circuit 19 is to be used as a transmitter or a receiver) and 28 (VDD) are connected to a positive voltage sourceO
At the remote station, modem 29 receives the messages transmitted over antenna wire system 11 from cen-tral station 10 and connects these ~essages to pin 6 (Data Input) of receiver ~. Receiver ~ is the same circuit as ~-f~ trC~S~7iff~
~s4e4~4~ 19 and is an ED-ll which may be supplied by Supertex~ Its pin 27l however, is connected to ground to condition it as a receiver. Pin 1 is connected to ground while pins 2 and 3 are connected together by a series cir-cuit comprising resistor 61 and variable resistor 62. Pin 2 is connected to pin 4 through capacitor 63. This RC network selects ~he frequency of the master oscillator within receiver 29 Pin 5 is not used and pin 7 (Output) is connected to pin 3 of circuit 64 which is a dual type D
flip-10p connected in a sh;ft register configuration and which is used as a decoder of the control information making up the control bits of the received message. Circuit 64 may ~ r~o~
7~39 be an MC14013B supplied by Motorola. Pins 8-18 of receiver ,~ ~ are connected to switchbank 6S which is used for seIecting the specific address used to identify remote sta-tion 14. When the message transmitted by central station 10 is received by modem 29 and supplied to receiver 28l receiv-er 28 compares the received address with ~he address established by switchbank 65~ If the addresses matchr then receiver 28 controls ~he loads such as light 31 through the use oE circuit 64. Pins 19-23 of receiver 28 are unused and pins 24-26 are connected to respective pins 9-11 of decoder 64. Pin 28 is connected to a positive source. Pin 1 of decoder 64 is connec~ed to ~he base of transistor 66 while the collector of that transistor is connected to a positive source and the emitter is connected through resistor 67 and ight source 31 to ground. Pin 5 of decoder 64 is connected to pin 13 of the same decoder and pin 7 is groundedO Pins
ANTENNA SYSTEM TR~NSMISSION P.PPARATUS
BACKGRoUND OF THE INVEN~ION
This invention relates to the transrnission of digital data over a communication channel and, more particularly, to the transmission of such data over antenna wire systems which pre-exist in buildings.
Energy management, and fire and security supervi-sion, are today being controlled by computer data processing techniques. For fire and security supervision, ~uch techniques allow a high degree of security in monitoring the fire and security points within a building to insure that all alarms will be brought to the attention of the security personnel in the building and that all lines running between the central station where the personnel are located and the remote fire and security sensing points are supervised for attempted breaches. In energy management systems~ these techniques also allow the control of a building's air conditioning and energy consuming loads in the most effi-cient manner in accordance with changing conditions~ Such ~schedules as optimum startup, load cycling and load shedding can reduce the total energy consumption of a building.~
However, it is much~easier to install such systems ;i.n newly constructed buildings than in existing buildinys and even then the cost of installing wire dedicated specifi-cally to the transmission of information between the central station and its remote stations adds materially to the over~
all cost of the systems. In small buildings, the added cost of wiring can mean the difference between installing such energy saving and security equipment or suffering the high cost from uslng unnecessary energy and potential losses from thefts and burglaries.
7'7139 Moreover, in such buildings as motels, hotels and the like, guests often check out of their rooms without turning off lights, reducing the heating or cooling load by appropriate adjustment of the thermostat, or shutting off electrical appliances such as radios and televisions. There is a substantial amount of energy being wasted to run these loads even though the room is not occupied.
In order to take advantage of the energy savings attendant with energy management systems, especially in existing buildings, it is desirable to develop a system which requires no extra wiring between the central station and its remote stations. Wireless transmission of radio frequency signals suffers ~he disadvantages of governmental regulations and expensive signal transmitting and receiving equipment. It has been suggested that ~he power lines run ning throughout the building be-used to carry the digital nformation necessary for energy managemellt and fire and security supervision. However, power line carrier devices are susceptible to noise on the line and randomly cycle the controlled loads in an energy wasteful mannerD It has further been suggested that the ~elephone lines running hroughout a building complex can be used to carry this nformation~ However, no one has suggested using the anten-na wiring system that runs from the rooftop antenna to near-ly every room within such buildings as hotels and motels.
Thus,~ the ob~ect of this invention is to transmit digital information useful in energy management or fire and security supervision and the like over the existing antenna wiring system running throughout a building in order to eliminate the extra costs associated with running wiring dedicated specially for that purpose.
`~ \ ~.3L~7'713~
SUMMARY OF THF INVENTION
Therefore, the invention is directed to a transmission : :
system having a central station for transmitting data over an existing antenna wire system within a building to at least one remote station, the transmission system having an address and control generator at the central station for generating digital address and control information, a modem for connecting the address and control generator to the existing antenna wire system running throughout the building for supplying the address and control information to the antenna wire system, a modem at the remote station connected to the antenna wire system, an address matcher connected to the modem at the remote station for comparing the address generated by the address and control generator to a pre-established address for the remote station, and a load controller connected to the address matcher and re-sponsive to the control information when there is a match be- ~
tween the address transmitted by the address and control --generator and the predetermined address.
In accordance with the present invention there is 20 ~ provided a transmission system having a central station for transmitting digital data over an existing antenna wire system withln a building to at least one remote station comprising: .
an address and control generator at said central station for generating digital address and control information; a first ~.
single channel modem adapted to connect said address and control .
generator to said antenna wire system for supplying said address and control informa-tion to said antenna wire system; a second single channel modem at said at least one remote station adapted to be connected to said antenna wire system; address match means including a plurality of remote station switches arranged to specifically identify said at least one remote .
. .
station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control ~' generator to said predetermined address; and load control means connected to said address match means and made responsive to said control information when there is a match between said address transmitted by said address and control generator and said predetermined address.
In accordance with the present invention there is further provided a transmission system having a central station ;~
for transmitting digital data over an e~isting antenna wire system within a building to at least one remote station com-prising: an antenna wire system within a building; an address and control generator at said central station for generating digital address and control information; a first single channel modem connecting said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system; a second single channel modem at said at least one remote station connected to said antenna wire system; address match means including a plurality of remote station switches for specifically identifying said at least one remote station and an address matcher connected to both:said plurality of remote station switches and said second ~ single channel modem for comparing said address generated by said : address and control generator to said predetermined address; and load control means connected to said address match means and made responsive to said control information when there is a match between said address transmitted by said address and control generator and said predetermined address.
BRIEF DESC ~
These and other features and advantages will become more "~ ~
~ - 3a -7'~39 apparent from a detailed consideration of the invention when taken in conjunction with the drawings in which: ~;
Figure 1 is a block diagram of the invention; and, ~
Figure 2 i5 a detailed schematic diagram of the in- :
vention.
DETAILED DESCRIPTION
.
In Figure 1, central station 10 is connected to antenna wire system 11 running through a building such as a .
motel or hotel and may be located in the office or other con-venlent::room oi the building. Centrsl ststi~n 10 is '~
, .
',~
~ , :.
~=
A ~ - 3b -~ g f~ 7~3~ ~
conllected to ante~llla line 11 by connector l2. ~ithin the guest or other rooms of the building are located remote stations 13, 14 and 15 connected to the antenna wire system 11 by connectors 16, 17 and 18 respectively.
Central station 10 comprises an address and con-trol generator in the form of transmitter circuit 19 connected to antenna system 11 by single channel modem 20.
Transmitter 19 transmits 15 bit messages or words to remote stations 13-lSo Eleven of the bits ~ransmitted by transmit-ter 19 are comprised of the address f~r the specific remote station with which central station ~ wishes to communicate.
This address is selected by address keyboard 210 The other four bits of the message transmitted by transmitter 19 through modem 20 are selected by control input 22 which may provide, for example, start-stop functions for the loads of remote stations 13-15. Voice transmitter 23 connected to microphone 24 may also be connected to transmitter 19 for tranamitting voice messages over antenna wire system 11 to the remote stations.
Remote station 13 comprises receiver 25 connected on one side to antenna wire system 11 through single channel modem 26 and on the other side to a load such as fan 27.
Remote station ~4 comprises a receiver 28 connected to antenna wire system 11 through single channel modem 29 and also to loads 30 and 31~ Remote station 15 comprises receiver 32 connected 011 one side to antenna wire system 11 through single channel modem 33 and'on its other side to voice receiver 34 through AND gate 35. The voice receiver 34 is also connected to speaker 36.
Messages,which are constructed of an address por-tion and a control portion are transmitted by central sta-tion 10 to antenna wire system 11 and received by remote ~7'713~ ~
stations 13, 14 and 15. Receivers 25, 28 and 32 compare the address received from central station 10 with their own spe~
cifically structured address so that each remote station can determine whether it is the one selected by central station 10 to perform a control func~ion. The selected remote sta-tion will then operate on its loads according to the control instructions in the control portion of the message transmitted by central station 10. When the system is to be used in motels and hotels, ~he loads may be the heating and refrigeration units, lights, radios, televisions and the like located in the guest rooms. The~ may also be speakers, as suggested by remote station 15~ for direct oral commun;-cation with the maids cleaning the room or the guests staying in the room~ The single channel modems 20, 26, 29 r and 33 may be the same as that shown in copendin~ applica-~ tion 35 ~ 4~
~,,,,j /
~ filed on ~ay ~ on behalf of the same assignee as that of the present invention~
The details of the central station 10 and one of the remote stations 14 lS shown in Figure 2. Transmitter 19 takes the form of a 28 pin ED-ll integrated circuit ; connected as shown. The ED-ll circuits 19, 25r 28 and 32 ~ generate fifteen bit Manchester~code words from the eleven ~ ~ addre6s inputs and four control inputs~ The voice circuits 23 and 34 may be supplied under part number MC3517 by ~"L
Motorola. Pin 1 of transmitter 19 is connected to ground, a serie6 circuit comprised of resistor 51 and variable resis-tor 52 is connected between pins 2 and 3 and capacitor 53 is connected between pins 2 and 4. This RC network establishes the frequency Eor the master oscillator within integrated circuit 19~ Pin 5 is unused and pin 6 is a Start/Data Input pin connected to execute terminal 54 which, when strobed, ~ f~D~1~R t~
~ 7'7~3~ i will cause t-he address selected by the switch bank to ~e transmitted out through the single channel modem 20 to antenlla wire system 11. Pin 7 is ~he output terminal of transmitter 19 an~ is connected to the input of modem 20.
Pins 8-18 are connected to switchbank 55 which is ~he key-board 21 shown in Figure 1 and selects the address for the remote station with which central station desires to commu-nicate. Switchbank 56 is connected to pins 19-22 for selecting the control information to finish out the fifteen bit message transmitted by transmitter 19 to antenna wire system 11. This control information may include start-stop information for the loads controlled by remote stations 13-15. Pins 23-26 are unused and pins 27 (which controls whether circuit 19 is to be used as a transmitter or a receiver) and 28 (VDD) are connected to a positive voltage sourceO
At the remote station, modem 29 receives the messages transmitted over antenna wire system 11 from cen-tral station 10 and connects these ~essages to pin 6 (Data Input) of receiver ~. Receiver ~ is the same circuit as ~-f~ trC~S~7iff~
~s4e4~4~ 19 and is an ED-ll which may be supplied by Supertex~ Its pin 27l however, is connected to ground to condition it as a receiver. Pin 1 is connected to ground while pins 2 and 3 are connected together by a series cir-cuit comprising resistor 61 and variable resistor 62. Pin 2 is connected to pin 4 through capacitor 63. This RC network selects ~he frequency of the master oscillator within receiver 29 Pin 5 is not used and pin 7 (Output) is connected to pin 3 of circuit 64 which is a dual type D
flip-10p connected in a sh;ft register configuration and which is used as a decoder of the control information making up the control bits of the received message. Circuit 64 may ~ r~o~
7~39 be an MC14013B supplied by Motorola. Pins 8-18 of receiver ,~ ~ are connected to switchbank 6S which is used for seIecting the specific address used to identify remote sta-tion 14. When the message transmitted by central station 10 is received by modem 29 and supplied to receiver 28l receiv-er 28 compares the received address with ~he address established by switchbank 65~ If the addresses matchr then receiver 28 controls ~he loads such as light 31 through the use oE circuit 64. Pins 19-23 of receiver 28 are unused and pins 24-26 are connected to respective pins 9-11 of decoder 64. Pin 28 is connected to a positive source. Pin 1 of decoder 64 is connec~ed to ~he base of transistor 66 while the collector of that transistor is connected to a positive source and the emitter is connected through resistor 67 and ight source 31 to ground. Pin 5 of decoder 64 is connected to pin 13 of the same decoder and pin 7 is groundedO Pins
2, 4, 6, 8 a~nd 12 are unused. For additional loads at a remote station, additional circuits, for demultiplexing and power switching, similar to circuit 64 are supplied to decode the information appearing on pins 24, 25 and ~6 of receiver 28 to determine which load to control and how the ,. : :
load ~should be con~crolled. As shown, a maximum of 16 loads may be simultaneously controlled per station~
, :: : :~:
' . .
load ~should be con~crolled. As shown, a maximum of 16 loads may be simultaneously controlled per station~
, :: : :~:
' . .
Claims (14)
1. A transmission system having a central station for transmitting digital data over an existing antenna wire system within a building to at least one remote station comprising:
an address and control generator at said central sta-tion for generating digital address and control information;
a first single channel modem adapted to connect said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system;
a second single channel modem at said at least one remote station adapted to be connected to said antenna wire system;
address match means including a plurality of remote:.
station switches arranged to specifically identify said at least one remote station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control generator to said predetermined address; and, load control means connected to said address match means and made responsive to said control informa-tion when there is a match between said address transmitted by said address and control generator and said predetermined address.
an address and control generator at said central sta-tion for generating digital address and control information;
a first single channel modem adapted to connect said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system;
a second single channel modem at said at least one remote station adapted to be connected to said antenna wire system;
address match means including a plurality of remote:.
station switches arranged to specifically identify said at least one remote station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control generator to said predetermined address; and, load control means connected to said address match means and made responsive to said control informa-tion when there is a match between said address transmitted by said address and control generator and said predetermined address.
2. The system of claim 1 wherein said address and control generator comprises a keyboard having a plurality of central station switches for selecting the address and control informa-tion to be transmitted to said at least one remote station.
3. The system of claim 2 wherein said address and control generator comprises a transmitter connected to the keyboard for utilizing the switch positions of said keyboard to generate said address and control information, said transmitter connected to said first single channel modem of said central station for causing said first single channel modem to transmit said address and control information to said antenna wire system.
4. The system of claim 3 wherein said address matcher comprises a receiver connected to said second single channel modem of said at least one remote station and to said plurality of remote station switches for comparing the switch positions of said plurality of remote station switches to said address received from said antenna wire system.
5. The system of claim 1 wherein said address and control generator comprises a keyboard having a plurality of central station switches for selecting the address and control informa-tion to be transmitted to said at least one remote station.
6. The system of claim 5 wherein said address and control generator comprises a transmitter connected to the keyboard for utilizing the switch positions of said keyboard to generate said address and control information, said transmitter connected to said first single channel modem of said central station for causing said first single channel modem to transmit said address and control information to said antenna wire system.
7. The system of claim 1 wherein said address match means comprises a receiver connected to said plurality of remote station switches and to said second single channel modem for comparing the switch positions of said plurality of remote station switches to said address received from said antenna wire system.
8. A transmission system having a central station for transmitting digital data over an existing antenna wire system within a building to at least one remote station comprising:
an antenna wire system within a building;
an address and control generator at said central sta-tion for generating digital address and control information;
a first single channel modem connecting said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system;
a second single channel modem at said at least one remote station connected to said antenna wire system;
address match means including a plurality of remote station switches for specifically identifying said at least one remote station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control generator to said predetermined ad-dress; and, load control means connected to said address match means and made responsive to said control informa-tion when there is a match between said address transmitted by said address and control generator and said predetermined address.
an antenna wire system within a building;
an address and control generator at said central sta-tion for generating digital address and control information;
a first single channel modem connecting said address and control generator to said antenna wire system for supplying said address and control information to said antenna wire system;
a second single channel modem at said at least one remote station connected to said antenna wire system;
address match means including a plurality of remote station switches for specifically identifying said at least one remote station and an address matcher connected to both said plurality of remote station switches and said second single channel modem for comparing said address generated by said address and control generator to said predetermined ad-dress; and, load control means connected to said address match means and made responsive to said control informa-tion when there is a match between said address transmitted by said address and control generator and said predetermined address.
9. The system of claim 8 wherein said address and control generator comprises a keyboard having a plurality of central station switches for selecting the address and control informa-tion to be transmitted to said at least one remote station.
10. The system of claim 9 wherein said address and control generator comprises a transmitter connected to the keyboard for utilizing the switch positions of said keyboard to generate said address and control information, said transmitter connected to said first single channel modem of said central station for causing said first single channel modem to transmit said address and control information to said antenna wire system.
11. The system of claim 10 wherein said address matcher comprises a receiver connected to said second single channel modem of said at least one remote station and to said plurality of remote station switches for comparing the switch positions of said plurality of remote station switches to said address received from said antenna wire system.
12. The system of claim 8 wherein said address and control generator comprises a keyboard having a plurality of central station switched for selecting the address and control informa-tion to be transmitted to said at least one remote station.
13. The system of claim 12 wherein said address and control generator comprises a transmitter connected to the keyboard for utilizing the switch positions of said keyboard to generate said address and control information, said transmitter connected to said first single channel modem of said central station for causing said first single channel modem to transmit said address and control information to said antenna wire system.
14. The system of claim a wherein said address match means comprises a receiver connected to said plurality of remote station switches and to said second single channel modem comparing the switch positions of said plurality of remote station switches to said address received from said antenna wire system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6672479A | 1979-08-15 | 1979-08-15 | |
| US066,724 | 1979-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1177139A true CA1177139A (en) | 1984-10-30 |
Family
ID=22071275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000354776A Expired CA1177139A (en) | 1979-08-15 | 1980-06-25 | Antenna system transmission apparatus |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5630393A (en) |
| AU (1) | AU6095880A (en) |
| CA (1) | CA1177139A (en) |
| DE (1) | DE3030739A1 (en) |
| GB (1) | GB2056731B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0226392A3 (en) * | 1985-12-04 | 1990-04-11 | Henry C. Meadow | Display key and keyboard |
| GB2194088B (en) * | 1986-08-08 | 1990-10-24 | Axon Research Limited | Energy control and communication system |
| DE4425469A1 (en) * | 1994-07-19 | 1996-01-25 | Bernd Jonatat | Control installation for commercial and household systems |
-
1980
- 1980-06-25 CA CA000354776A patent/CA1177139A/en not_active Expired
- 1980-07-31 AU AU60958/80A patent/AU6095880A/en not_active Abandoned
- 1980-08-13 GB GB8026427A patent/GB2056731B/en not_active Expired
- 1980-08-14 DE DE19803030739 patent/DE3030739A1/en not_active Withdrawn
- 1980-08-15 JP JP11187380A patent/JPS5630393A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2056731A (en) | 1981-03-18 |
| DE3030739A1 (en) | 1981-03-26 |
| GB2056731B (en) | 1983-05-05 |
| JPS5630393A (en) | 1981-03-26 |
| AU6095880A (en) | 1981-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20011030 |