US4437183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for distributing control signals
Assignee: General Datacomm Inc
•
Filing: 1981-01-12
•
Granted: 1984-03-13
•
Expires: 2001-01-12
Abstract
Abstract A method and apparatus are described in which the control signals for a data channel are transmitted along with the channel aaddress. The control signal and its address are transmitted on a bit interleaved basis in response to CONTROL select signals that are generated as part of the frame. In accordance with the invention, the CONTROL select signals are distributed relatively uniformly throughout the frame. At the receiver, the bits of the control signal and its address are reassembled and the address is used to route the control signal to its proper channel. Further, the bandwidth assigned to control signaling is increased by inserting CONTROL select signals in all time slots that are available in the frame after the necessary channel select signals and other overhead select signals have been assigned. This technique is particularly advantageous in a system having a fixed aggregate transmission bandwidth, variable loads and the capability of automatically reconfiguring the frame.
Inventors
- 👤 Gary A. Profet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
157 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including control signals, a method of transmitting control signals associated with individual data channels comprising the steps of: storing at a transmitter a control signal for a channel together with an address for said channel, generating at said transmitter a sequence of select signals that are used to select for transmission either data signals or overhead signals, the select signals for the transmission of control signals associated with individual data channels (hereinafter CONTROL select signals) being distributed throughout said sequence, and responsive to each CONTROL select signal, transmitting one bit of the stored control signal and its address.
Claim 2
Dependent Claim
157 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including control signals, a method of transmitting control signals associated with individual data channels comprising the steps of: storing at a transmitter a control signal for a channel together with an address for said channel, generating at said transmitter a sequence of select signals that are used to select for transmission either data signals or overhead signals, the select signals for the transmission of control signals associated with individual data channels (hereinafter CONTROL select signals) being distributed throughout said sequence, and responsive to each CONTROL select signal, transmitting one bit of the stored control signal and its address.
Claim 3
Dependent Claim
67 words
The method of claim 1 further comprising the steps of: generating at a receiver the same sequence of select signals that is used at the transmitter, for each CONTROL select signal, storing one bit of the signal received at the receiver, and when the full control signal and its address are stored at the receiver, using the address to route the control signal to an individual channel.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein each control signal and its address is transmitted twice.
Claim 5
Dependent Claim
100 words
The method of claim 1 wherein each control signal and its address is transmitted twice, said method further comprising the steps of: generating at a receiver the same sequence of select signals that is used at the transmitter, for each CONTROL select signal, storing one bit of the signal received at the receiver, comparing the bits received during one transmission of the control signal and its address with the bits received during a second transmission of the control signal and its address, and upon detection of an identity, using said address to route the control signal to an individual channel.
Claim 6
Dependent Claim
161 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including control signals, an apparatus for transmitting control signals associated with individual data channels comprising: means for storing at a transmitter a contol signal for a channel together with an address for said channel, means for generating at said transmitter a sequence of select signals that are used to select for transmission either data signals or overhead signals, the select signals for the transmission of control signals associated with individual data channels (hereinafter CONTROL select signals) being distributed throughout said sequence, and means for transmitting one bit of the stored control signal and its address in response to each CONTROL select signal.
Claim 7
Dependent Claim
161 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including control signals, an apparatus for transmitting control signals associated with individual data channels comprising: means for storing at a transmitter a contol signal for a channel together with an address for said channel, means for generating at said transmitter a sequence of select signals that are used to select for transmission either data signals or overhead signals, the select signals for the transmission of control signals associated with individual data channels (hereinafter CONTROL select signals) being distributed throughout said sequence, and means for transmitting one bit of the stored control signal and its address in response to each CONTROL select signal.
Claim 8
Dependent Claim
70 words
The apparatus of claim 5 further comprising: means for generating at a receiver the same sequence of select signals that is used at the transmitter, means for storing for each CONTROL select signal one bit of the signal received at the receiver, and means for using the address to route the control signal to an individual channel when the full control signal and its address are stored at the receiver.
Claim 9
Dependent Claim
15 words
The apparatus of claim 5 wherein each control signal and its address is transmitted twice.
Claim 10
Dependent Claim
105 words
The apparatus of claim 5 wherein each control signal and its address is transmitted twice, said apparatus further comprising: means for generating at a receiver the same sequence of select signals that is used at the transmitter, means for storing for each CONTROL select signal one bit of the signal received at the received, means for comparing the bits received during one transmission of the control signal and its address with the bits received during a second transmission of the control signal and its address, and means for using said address to route the control signal to an individual channel upon detection of an identity.
Claim 11
Dependent Claim
144 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including synchronization signals, a method of assigning select signals to the time slots of said frame comprising the steps of: assigning to the time slots of said frame all the select signals required for the transmission of data and the transmission of those overhead signals which are not used for the transmission of EIA-type control signals for individual data channels, and then assigning to all the remaining time slots of said frame select signals for the transmission of EIA-type control signals for individual data channels.
Claim 12
Dependent Claim
144 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including synchronization signals, a method of assigning select signals to the time slots of said frame comprising the steps of: assigning to the time slots of said frame all the select signals required for the transmission of data and the transmission of those overhead signals which are not used for the transmission of EIA-type control signals for individual data channels, and then assigning to all the remaining time slots of said frame select signals for the transmission of EIA-type control signals for individual data channels.
Claim 13
Dependent Claim
173 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including synchronization signals, a frame of select signals in which the time slots of said frame are filled by first allocating to the time slots of said frame on a highest priority all the select signals required for the transmission of data and the transmission of those overhead signals which are not used for the transmission of EIA-type control signals for individual data channels, said select signals being substantially uniformly distributed in said frame, and then allocating to all the remaining time slots of said frame select signals for the transmission of EIA-type control signals for individual data channels, whereby said select signals for EIA-type control signals are substantially uniformly distributed in said frame.
Claim 14
Dependent Claim
173 words
In a bit-interleaved time division multiplexer for multiplexing data and control signals from a plurality of individual data channels so as to produce a single stream of signals on an aggregate transmission line, said multiplexer including a frame generator which generates select signals that are used to select for transmission either data from individual data channels or overhead signals including synchronization signals, a frame of select signals in which the time slots of said frame are filled by first allocating to the time slots of said frame on a highest priority all the select signals required for the transmission of data and the transmission of those overhead signals which are not used for the transmission of EIA-type control signals for individual data channels, said select signals being substantially uniformly distributed in said frame, and then allocating to all the remaining time slots of said frame select signals for the transmission of EIA-type control signals for individual data channels, whereby said select signals for EIA-type control signals are substantially uniformly distributed in said frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |