Patent US3225714A successfully refreshed from Google Patents.
Patent US5982509A successfully refreshed from Google Patents.
US5982509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video interfacing technique for transmitting reset signals in an image forming device having video and engine controllers
Assignee: Samsung Electronics Co Ltd
•
Filing: 1997-01-14
•
Granted: 1999-11-09
•
Expires: 2017-01-14
Abstract
Abstract A video interfacing technique in an image forming device having video and engine control units, includes setting a timeout variable to repeatedly transmit status messages over a predetermined time period when a communications error has occurred, and transmitting reset signals from one control unit to the other control unit to reset it, when a predetermined message is not received while the video and engine control units transmit and receive the message to and from each other.
Inventors
- 👤 Sang-Kil Ahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:30
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/23; H04N1/00127; H04N1/00204; H04N1/00236; H04N1/00238; G; G06; G06K; G06K15/00; H04N1/32; H04N1/32609; H04N1/32646; H04N1/32667; G06K2215/00; G06K2215/0082; G06K2215/0091; H04N2201/00; H04N2201/0008; H04N2201/0015
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
In an image forming device having video and engine control units, a video interfacing method comprising the steps of: setting a timeout variable in order to repeatedly transmit a message over a predetermined time period when there has been a communications error, while the video and engine control units transmit and receive status messages to and from each other; and transmitting a reset signal from one control unit to the other control unit to reset the other control unit when a predetermined message had not been received during the set timeout variable, while the video and engine control units transmit and receive the message to and from each other, the video control unit transmitting a predetermined command message to the engine controller after setting the timeout variable, the video control unit checking for an engine message received from the engine control unit for a response to the command message, the video control unit transmitting a reset signal to the engine control unit when a normal engine response message is not received during the set timeout variable.
Claim 2
Dependent Claim
176 words
In an image forming device having video and engine control units, a video interfacing method comprising the steps of: setting a timeout variable in order to repeatedly transmit a message over a predetermined time period when there has been a communications error, while the video and engine control units transmit and receive status messages to and from each other; and transmitting a reset signal from one control unit to the other control unit to reset the other control unit when a predetermined message had not been received during the set timeout variable, while the video and engine control units transmit and receive the message to and from each other, the video control unit transmitting a predetermined command message to the engine controller after setting the timeout variable, the video control unit checking for an engine message received from the engine control unit for a response to the command message, the video control unit transmitting a reset signal to the engine control unit when a normal engine response message is not received during the set timeout variable.
Claim 3
Dependent Claim
63 words
The method according to claim 1, the engine control unit transmitting the engine message, responding to the predetermined command message, when the command message has been received from the video control unit after setting the timeout variable, the engine control unit transmitting the reset signal to the video control unit when the command message has not been received during the set timeout variable.
Claim 4
Dependent Claim
24 words
The method according to claim 1, the set timeout variable being reset when the command message or normal engine response message has been received.
Claim 5
Dependent Claim
23 words
The method according to claim 2, the set timeout variable being reset when the command message or normal engine message has been received.
Claim 6
Dependent Claim
196 words
An image forming device comprising: video and engine control units; the video and engine control units each including means for setting a timeout variable in order to repeatedly transmit a message over a predetermined time period when there has been a communications error, while the video and engine control units transmit and receive status messages to and from each other; and the video and engine control units each including means for transmitting a reset signal from one control unit to the other control unit to reset the other control unit when a predetermined message had not been received during the set timeout variable, while the video and engine control units transmit and receive the message to and from each other, the video control unit including means for transmitting a predetermined command message to the engine controller after setting the timeout variable, the video control unit including means for checking for an engine message received from the engine control unit for a response to the command message, the video control unit including means for transmitting a reset signal to the engine control unit when a normal engine response message is not received during the set timeout variable.
Claim 7
Dependent Claim
196 words
An image forming device comprising: video and engine control units; the video and engine control units each including means for setting a timeout variable in order to repeatedly transmit a message over a predetermined time period when there has been a communications error, while the video and engine control units transmit and receive status messages to and from each other; and the video and engine control units each including means for transmitting a reset signal from one control unit to the other control unit to reset the other control unit when a predetermined message had not been received during the set timeout variable, while the video and engine control units transmit and receive the message to and from each other, the video control unit including means for transmitting a predetermined command message to the engine controller after setting the timeout variable, the video control unit including means for checking for an engine message received from the engine control unit for a response to the command message, the video control unit including means for transmitting a reset signal to the engine control unit when a normal engine response message is not received during the set timeout variable.
Claim 8
Dependent Claim
69 words
The device according to claim 5, the engine control unit including means for transmitting the engine message, responding to the predetermined command message, when the command message has been received from the video control unit after setting the timeout variable, the engine control unit including means for transmitting the reset signal to the video control unit when the command message has not been received during the set timeout variable.
Claim 9
Dependent Claim
24 words
The device according to claim 5, the set timeout variable being reset when the command message or normal engine response message has been received.
Claim 10
Dependent Claim
23 words
The device according to claim 6, the set timeout variable being reset when the command message or normal engine message has been received.
References Cited (Backward Citations)
US4686698A
Cited
US4742483A
Cited
US4741020A
Cited
US5023631A
Cited
US5235674A
Cited
US5270774A
Cited
US5243380A
Cited
US5398100A
Cited
US5430554A
Cited
US5426458A
Cited
US5748337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |