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US5548725A
Expired / Lapsed
US
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System for transmitting command and/or data in a single packet and automatically reporting status a predetermined time after receiving a command
Assignee: Sony Corp
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Filing: 1993-12-21
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Granted: 1996-08-20
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Expires: 2013-12-21
Abstract
Abstract An audio visual control apparatus for communication between a master device and a slave device comprises a master AV center, at least one slave device, a digital control bus line and a transmitter. The master AV center has at least a display device and a communication processor. A minimum of one slave device is provided, having a communication processor connected to the master AV center via the digital control bus line between the two communication processors. The transmitter transmits one command and/or data in a single packet from the master AV center to the slave device and vice versa through the digital control bus line.
Inventors
- 👤 Shigeo Tanaka
- 👤 Hiroshi Yamazaki
- 👤 Noriko Kotabe
- 👤 Koichi Sugiyama
- 👤 Makoto Sato
- 👤 Akira Katsuyama
- 👤 Yoshio Osakabe
- 👤 Yasuo Kusagaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:23
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/40052; H04L12/40071; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/20; H04B1/205; G; G06; G06F; G06F13/00; G06F13/38; G06F13/42; G06F13/4247; H04L12/40006; H04L12/40117
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
234 words
An audio visual control apparatus for communication between a plurality of devices, comprising: a master device having first communication processing means for processing command and data to be transmitted by said master device; at least one slave device having second communication processing means for processing command and data received by said slave device and for generating a status report to be transmitted by said slave device to said master device a predetermined time after said slave device receives a command from said master device, said status report describing a status of a processing of said command from said master device by said second communication processing means, and said slave device being connected to said master device by way of a digital control bus line between said first communication processing means and said second communication processing means; wherein said second communication processing means does not generate a status report if said processing of said command from said master device is completed by said second communication processing means prior to said predetermined time after said command is received; first transmission means for transmitting command and/or data to be transmitted by said master device to said slave device, each command transmitted from said master device to said slave device being in a single packet; and second transmission means for transmitting said status report from said slave device to said master device through said digital control bus line.
Claim 2
Dependent Claim
234 words
An audio visual control apparatus for communication between a plurality of devices, comprising: a master device having first communication processing means for processing command and data to be transmitted by said master device; at least one slave device having second communication processing means for processing command and data received by said slave device and for generating a status report to be transmitted by said slave device to said master device a predetermined time after said slave device receives a command from said master device, said status report describing a status of a processing of said command from said master device by said second communication processing means, and said slave device being connected to said master device by way of a digital control bus line between said first communication processing means and said second communication processing means; wherein said second communication processing means does not generate a status report if said processing of said command from said master device is completed by said second communication processing means prior to said predetermined time after said command is received; first transmission means for transmitting command and/or data to be transmitted by said master device to said slave device, each command transmitted from said master device to said slave device being in a single packet; and second transmission means for transmitting said status report from said slave device to said master device through said digital control bus line.
Claim 3
Dependent Claim
26 words
An audio visual control apparatus as cited in claim 1, wherein transmission of said command by said first transmission means is performed with an unlock mode.
Claim 4
Dependent Claim
28 words
An audio visual control apparatus as cited in claim 1, wherein transmission of said command and/or data by said first transmission means is performed in master transmission mode.
Claim 5
Dependent Claim
45 words
An audio visual control apparatus as cited in claim 1, wherein transmission of data is performed using a plurality of packets, and wherein all packets except the last packet are transmitted in a lock mode and the last packet is transmitted in an unlock mode.
Claim 6
Independent Claim
103 words
A method for transmitting a command and/or data between AV appliances, the method comprising the steps of: transmitting a command and/or data from a transmitting AV appliance to a receiving AV appliance, the command being transmitted in a single packet; generating and transmitting a status report from the receiving AV appliance to the transmitting AV appliance within a predetermined time after the receiving AV appliance receives the command, the status report being a description of a status of a processing of the command; and not generating a status report if processing is completed prior to said predetermined time after said command is received.
Claim 7
Independent Claim
103 words
A method for transmitting a command and/or data between AV appliances, the method comprising the steps of: transmitting a command and/or data from a transmitting AV appliance to a receiving AV appliance, the command being transmitted in a single packet; generating and transmitting a status report from the receiving AV appliance to the transmitting AV appliance within a predetermined time after the receiving AV appliance receives the command, the status report being a description of a status of a processing of the command; and not generating a status report if processing is completed prior to said predetermined time after said command is received.
Claim 8
Dependent Claim
27 words
A method for transmitting a command and/or data between AV appliances as cited in claim 5, wherein transmission of said command is executed in an unlock mode.
Claim 9
Dependent Claim
51 words
A method for transmitting a command and/or data between AV appliances as cited in claim 5, wherein, when data is transmitted using a plurality of packets, all packets carrying the data except the last packet are transmitted in a lock mode and the last packet is transmitted in an unlock mode.
References Cited (Backward Citations)
EP0505006A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |