US5200823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Virtual channels for a multiplexed analog component (mac) television system
Assignee: Cisco Technology Inc
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Filing: 1991-03-29
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Granted: 1993-04-06
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Expires: 2011-03-29
Abstract
Abstract A decoder for use in a television system. The decoder includes a receiver for receiving a television signal having at least one channel. Each channel of the television signal includes video and audio components. A channel maps the channel received by the receiver to a plurality of virtual channels. A first virtual channel utilizes a first combination of video and audio components of the received channel and a second virtual channel utilizes a second combination of video and audio components of the same received channel different than the first combination. A selector allows a subscriber to select one of the virtual channels. Linked text pages may also be mapped to one or more of the virtual channels.
Inventors
- 👤 Robert Yoneda
- 👤 Keith Gammie
- 👤 Wayne Sheldrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:38
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/08; H04N7/083; H04N5/00; H04N5/44; H04N5/60; H04N5/602; H04N7/087; H04N7/088; H04N7/0882; H04N7/0888; H04N7/16; H04N7/173; H04N7/17345; H04N7/17363
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
163 words
A decoder for use in a television system, said decoder comprising: a receiver for receiving a television signal including a linked sequence of text pages wherein each text page is accompanied by information identifying the next text page in the linked sequence of text pages; a memory for storing a channel map for mapping the linked sequence of text pages to a plurality of virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each of said virtual channels and root page spacings defining a number of text pages mapped to each of said virtual channels, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a selector for selecting ones of said virtual channels to display the linked sequence of text pages in accordance with the channel map stored in said memory.
Claim 2
Dependent Claim
163 words
A decoder for use in a television system, said decoder comprising: a receiver for receiving a television signal including a linked sequence of text pages wherein each text page is accompanied by information identifying the next text page in the linked sequence of text pages; a memory for storing a channel map for mapping the linked sequence of text pages to a plurality of virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each of said virtual channels and root page spacings defining a number of text pages mapped to each of said virtual channels, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a selector for selecting ones of said virtual channels to display the linked sequence of text pages in accordance with the channel map stored in said memory.
Claim 3
Dependent Claim
129 words
An encoder for transmitting a linked sequence of text pages to a plurality of remotely located decoders, said encoder comprising: means for generating a channel map for mapping the linked sequence of text pages to a plurality of virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a transmitter for transmitting a television signal comprising the linked sequence of text pages and the channel map to said remotely located decoders.
Claim 4
Dependent Claim
129 words
An encoder for transmitting a linked sequence of text pages to a plurality of remotely located decoders, said encoder comprising: means for generating a channel map for mapping the linked sequence of text pages to a plurality of virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a transmitter for transmitting a television signal comprising the linked sequence of text pages and the channel map to said remotely located decoders.
Claim 5
Dependent Claim
13 words
The decoder according to claim 1, wherein said memory is a non-volatile memory.
Claim 6
Dependent Claim
28 words
The decoder according to claim 1, wherein said memory stores a channel map in which each virtual channel has the same number of linked text pages mapped thereto.
Claim 7
Dependent Claim
171 words
A television system for transmitting and displaying a linked sequence of text pages, comprising: an encoder including: means for generating a channel map for mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a transmitter for transmitting a television signal comprising the linked sequence of text pages and the channel map; and a decoder comprising: a receiver for receiving the television signal; a memory coupled to said receiver for storing the channel map; and a selector for selecting ones of the virtual channels to display the linked sequence of text pages in accordance with the channel map stored in said memory.
Claim 8
Dependent Claim
171 words
A television system for transmitting and displaying a linked sequence of text pages, comprising: an encoder including: means for generating a channel map for mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and a transmitter for transmitting a television signal comprising the linked sequence of text pages and the channel map; and a decoder comprising: a receiver for receiving the television signal; a memory coupled to said receiver for storing the channel map; and a selector for selecting ones of the virtual channels to display the linked sequence of text pages in accordance with the channel map stored in said memory.
Claim 9
Dependent Claim
25 words
The television system according to claim 5 wherein each page of the linked sequence is accompanied by information identifying the next page in the sequence.
Claim 10
Dependent Claim
24 words
The television system according to claim 5 wherein said selector includes means for sequentially selecting text pages of the linked sequence of text pages.
Claim 11
Independent Claim
122 words
A method of transmitting a linked sequence of text pages to a plurality of decoders in a television system, comprising the steps of: generating a channel map for mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and transmitting a television signal comprising the linked sequence of text pages and the channel map.
Claim 12
Independent Claim
122 words
A method of transmitting a linked sequence of text pages to a plurality of decoders in a television system, comprising the steps of: generating a channel map for mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and transmitting a television signal comprising the linked sequence of text pages and the channel map.
Claim 13
Independent Claim
129 words
A method of displaying a linked sequence of text pages transmitted with a television signal in a television system, the method comprising the steps of: storing a channel map mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and selecting ones of the virtual channels to display the linked sequence of text pages in accordance with the stored channel map.
Claim 14
Independent Claim
129 words
A method of displaying a linked sequence of text pages transmitted with a television signal in a television system, the method comprising the steps of: storing a channel map mapping the linked sequence of text pages to at least two virtual channels, each virtual channel having text pages of the linked sequence of text pages mapped thereto in accordance with root text pages defining a first text page on each virtual channel and root page spacings defining a number of text pages mapped to each virtual channel, a final text page of a first virtual channel linked to the root text page of a second virtual channel; and selecting ones of the virtual channels to display the linked sequence of text pages in accordance with the stored channel map.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |