← Back to Patent Explorer
US4839908A Expired / Lapsed US ⏱️ 0.0 years remaining

Transmission control apparatus

Assignee: Canon Inc
•
Filing: 1987-01-28
•
Granted: 1989-06-13
•
Expires: 2007-01-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A data transmission control apparatus is provided in which received data are considered invalid for a predetermined period after the start of data reception is detected, in order to avoid errors in transmission which are more frequent at the initial period of the transmission.

Inventors

  • 👤 Haruyoshi Takayama

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:15
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/0078; H04L1/0083

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 117 words
A transmission control apparatus comprising: receiving means for receiving data, said receiving means further comprising demodulating means for receiving data modulated by a modulating method containing a time factor and a data factor, and demodulating the modulated data into a time component signal and a data component signal; detecting means for detecting the start of data reception by said receiving means; generating means for generating an inhibition signal for a predetermined period from the detection of the start of data reception by said detecting means; and invalidating means for invalidating, in accordance with the inhibition signal, the data received by said receiving means for the predetermined period from the start of data reception by said detecting means.
Claim 2
Dependent Claim 117 words
A transmission control apparatus comprising: receiving means for receiving data, said receiving means further comprising demodulating means for receiving data modulated by a modulating method containing a time factor and a data factor, and demodulating the modulated data into a time component signal and a data component signal; detecting means for detecting the start of data reception by said receiving means; generating means for generating an inhibition signal for a predetermined period from the detection of the start of data reception by said detecting means; and invalidating means for invalidating, in accordance with the inhibition signal, the data received by said receiving means for the predetermined period from the start of data reception by said detecting means.
Claim 3
Dependent Claim 120 words
A transmission control apparatus comprising: receiving means for receiving data modulated by a modulating method involving a time factor and a data factor; demodulating means for demodulating said modulated data into a time component signal and a data component signal; detecting means for detecting the start of data reception by said receiving means in response to the time component signal from said demodulating means; generating means for generating an inhibition signal for a predetermined period from the detection of the start of data reception by said detecting means; and invalidating means for invalidating, in accordance with the inhibition signal, the data received by said receiving means for the predetermined period from the start of data reception by said detecting means.
Claim 4
Dependent Claim 120 words
A transmission control apparatus comprising: receiving means for receiving data modulated by a modulating method involving a time factor and a data factor; demodulating means for demodulating said modulated data into a time component signal and a data component signal; detecting means for detecting the start of data reception by said receiving means in response to the time component signal from said demodulating means; generating means for generating an inhibition signal for a predetermined period from the detection of the start of data reception by said detecting means; and invalidating means for invalidating, in accordance with the inhibition signal, the data received by said receiving means for the predetermined period from the start of data reception by said detecting means.
Claim 5
Dependent Claim 36 words
A transmission control apparatus according to claim 2, wherein said invalidating means comprises: inhibiting means for inhibiting, in response to said inhibition signal, the transmission of data received by said receiving means to a processing device.
Claim 6
Dependent Claim 94 words
A transmission control apparatus comprising: sending means for sending data; receiving means for receiving data; first generating means for generating a first signal during data sending by said sending means; second generating means for generating a second signal for a predetermined period from the termination of data sending by said sending means; and inhibiting means for inhibiting, in accordance with said first and second signals, the data reception by said receiving means, during data sending by said sending means and during a predetermined period after the termination of data sending by said sending means.
Claim 7
Dependent Claim 94 words
A transmission control apparatus comprising: sending means for sending data; receiving means for receiving data; first generating means for generating a first signal during data sending by said sending means; second generating means for generating a second signal for a predetermined period from the termination of data sending by said sending means; and inhibiting means for inhibiting, in accordance with said first and second signals, the data reception by said receiving means, during data sending by said sending means and during a predetermined period after the termination of data sending by said sending means.
Claim 8
Dependent Claim 23 words
A transmission control apparatus according to claim 4, wherein said sending means is operable to send data in accordance with said first signal.
Claim 9
Dependent Claim 36 words
A transmission control apparatus according to claim 4, wherein said sending is adapted to send data to a signal transmission channel, and said receiving means is adapted to receive data from the same signal transmission channel.
Claim 10
Dependent Claim 118 words
A transmission control apparatus comprising: receiving means for receiving data; detecting means for detecting the entry of data into said receiving means; generating means for generating a time signal for a predetermined period from the detection of the entry of data by said detecting means; discriminating means for discriminating whether said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means; and invalidating means for invalidating data received by said receiving means in the event that said discriminating means discriminates that said detecting means does not detect the entry of succeeding data during a period of time when the time signal is generated by said generating means.
Claim 11
Dependent Claim 118 words
A transmission control apparatus comprising: receiving means for receiving data; detecting means for detecting the entry of data into said receiving means; generating means for generating a time signal for a predetermined period from the detection of the entry of data by said detecting means; discriminating means for discriminating whether said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means; and invalidating means for invalidating data received by said receiving means in the event that said discriminating means discriminates that said detecting means does not detect the entry of succeeding data during a period of time when the time signal is generated by said generating means.
Claim 12
Dependent Claim 52 words
A transmission control apparatus according to claim 7, wherein said invalidating means is operable to not invalid data received by said receiving means in case said discriminating means discriminates that said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means.
Claim 13
Dependent Claim 46 words
A transmission control apparatus according to claim 7, wherein said receiving means comprises demodulating means for receiving data modulated by a modulating method including a time factor and a data factor, and demodulating said modulated data into a time component signal and a data component signal.
Claim 14
Dependent Claim 31 words
A transmission control apparatus according to claim 9, wherein said detecting means is adapted to detect the entry of data in response to the time component signal from said demodulating means.
Claim 15
Dependent Claim 123 words
A transmission control apparatus comprising: receiving means for receiving data; detecting means for detecting the entry of data into said receiving means; generating means for generating a time signal for a predetermined period from the termination of the detection of the entry of data by said detection means; discriminating means for discriminating whether said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means; and resetting means for resetting the data receiving state of said receiving means in the event that said discriminating means discriminates that said detecting means does not detect the entry of succeeding data during the period of time when the time signal is generated by said generating means.
Claim 16
Dependent Claim 123 words
A transmission control apparatus comprising: receiving means for receiving data; detecting means for detecting the entry of data into said receiving means; generating means for generating a time signal for a predetermined period from the termination of the detection of the entry of data by said detection means; discriminating means for discriminating whether said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means; and resetting means for resetting the data receiving state of said receiving means in the event that said discriminating means discriminates that said detecting means does not detect the entry of succeeding data during the period of time when the time signal is generated by said generating means.
Claim 17
Dependent Claim 56 words
A transmission control apparatus according to claim 11, wherein said resetting means is operable to not reset the data receiving state of said receiving means in the event that said discriminating means discriminates that said detecting means detects the entry of succeeding data during the time when the time signal is generated by said generating means.
Claim 18
Dependent Claim 46 words
A transmission control apparatus according to claim 11, wherein said receiving means comprises demodulating means for receiving data modulated by a modulating method involving a time factor and a data factor and demodulating said modulated data into a time component signal and a data component signal.
Claim 19
Dependent Claim 31 words
A transmission control apparatus according to claim 13, wherein said detecting means is adapted to detect the entry of data, in response to the time component signal from said demodulating means.
Claim 20
Dependent Claim 27 words
A transmission control apparatus according to claim 2, wherein said invalidating means has gating means for gating the data component signal in accordance with the inhibition signal.
Claim 21
Dependent Claim 23 words
A transmission control apparatus according to claim 4, wherein said second generating means generates said second signal after generation of said first signal.
Claim 22
Dependent Claim 37 words
A transmission control apparatus according to claim 4, wherein said inhibiting means inhibits the transmission of data received by said receiving means to processing means in accordance with at least one of said first and second signals.

References Cited (Backward Citations)

US3191153A Cited
US3566280A Cited
US3938082A Cited
US4128809A Cited
US4063180A Cited
US4276642A Cited
US4410991A Cited
US4488303A Cited
US4538273A Cited
US4696002A Cited
US4627060A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-06-12 1992-12-12 1993-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-06-12 1996-12-12 1997-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-06-12 2000-12-12 2001-06-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag