US20040060072A1 - Broadband cable television and computer network - Google Patents

Broadband cable television and computer network Download PDF

Info

Publication number
US20040060072A1
US20040060072A1 US10/666,184 US66618403A US2004060072A1 US 20040060072 A1 US20040060072 A1 US 20040060072A1 US 66618403 A US66618403 A US 66618403A US 2004060072 A1 US2004060072 A1 US 2004060072A1
Authority
US
United States
Prior art keywords
frequency
computing devices
method
configured
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/666,184
Inventor
Dean Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micron Electronics Inc
Round Rock Research LLC
Original Assignee
Micron Technology Inc
Micron Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US84008397A priority Critical
Priority to US08/872,010 priority patent/US6637030B1/en
Application filed by Micron Technology Inc, Micron Electronics Inc filed Critical Micron Technology Inc
Priority to US10/666,184 priority patent/US20040060072A1/en
Publication of US20040060072A1 publication Critical patent/US20040060072A1/en
Assigned to MICRON ELECTRONICS, INC. reassignment MICRON ELECTRONICS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLEIN, DEAN A.
Assigned to MICRON TECHNOLOGY, INC. reassignment MICRON TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEI CALIFORNIA, INC.
Assigned to ROUND ROCK RESEARCH, LLC reassignment ROUND ROCK RESEARCH, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MICRON TECHNOLOGY, INC.
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/10Adaptations for transmission by electrical cable
    • H04N7/106Adaptations for transmission by electrical cable for domestic distribution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/17381Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream transmission being initiated by the user terminal

Abstract

A communication system is provided which may comprise an upstream source of broadband communications and a downstream local area network, wherein the upstream source of broadband communications is coupled to the downstream local area network through a notch filter. In some embodiments, the upstream source of broadband communications may be a cable television service provider, and the local area computer network may use existing cable television wiring as communication cable.

Description

    RELATED APPLICATIONS
  • This application is a continuation of copending U.S. patent application Ser. No. 08/872,010, filed Jun. 9, 1997. The Ser. No. 08/872,010 application is a divisional of U.S. patent application Ser. No. 08/840,083, filed Apr. 9, 1997, which is now abandoned. Both of these applications are hereby incorporated by reference in their entireties herein.[0001]
  • BACKGROUND OF THE INVENTION
  • Over the past several years, local area networks (LANs) have become commonplace in business and manufacturing facilities. In the residential environment, though, stand-alone computers are common, but networked personal computers (PCs) have remained relatively rare. However, as consumers rely more heavily on personal computers to telecommute, shop, and interact with the ever increasing number of on-line services, home computer networks will become more desirable. This trend may be further augmented by the development of “smart” appliances, alarm systems, etc., which may be controlled by a home computer system. In addition, “network computers” (NCs), which are inexpensive networked terminals without significant local memory or magnetic storage media have recently been introduced. These devices will make available inexpensive means of accessing data and programs on a remote personal computer, thereby reducing the investment in hardware necessary to create a home computer network. [0002]
  • Although the utility of home computers is increasing, and the cost of network hardware is decreasing, another major expense in the creation of such a home computer network resides in outfitting the home with network cabling to interconnect the desired PCs, NCs, appliances, and other network compatible devices. This expense, of course, is not affected by reductions in the price of the computer hardware itself. The expense of installing LAN wiring is generally less of a problem when creating LANs in office buildings. In the commercial and manufacturing environment, office facilities are often pre-wired with excess telephone cable. Unused telephone cable can therefore be used to support, for example, a 10BASET local area network. It has also become more common to pre-wire business and manufacturing facilities with the dedicated LAN communication cable necessary to support local computer networks. [0003]
  • New residential construction generally does not include any pre-wiring of LAN cabling, and although telephone wiring is typically routed to many rooms of the house, there is generally no excess telephone wiring which can be dedicated to use in a local computer network. However, over 60% of the homes in the United States are wired for cable television reception, providing a wide-band and potentially very high capacity information pipeline into a majority of American homes. This fact is currently motivating the development of interactive communication on the cable television infrastructure. In some cable television distribution systems, downstream communication from the cable service provider is carried on 6 MHz channels in the 50-750 MHz range. Upstream communication from the customer to the cable service provider is supported on several 6 MHz channels in the 5-42 MHz range. Over these communication channels, interactive services may be provided which include analog telephone service, as well as two-way digital communication such as access to the Internet, electronic shopping, videoconferencing, and other communication services. Cable modems, commercially available, for example, as the model CyberSURFER(TM) from Motorola, are designed to implement such two way digital communication between a consumer's personal computer and the cable television service provider along the cable television line. As this trend continues to develop, consumers may connect more digital computing devices to their cable television wiring. [0004]
  • However, the use of this CATV wiring to support a local area network has not been previously accomplished. As is described in detail in U.S. Pat. No. 5,255,267 to Hansen et al., it is possible to inject broadband video channels onto LAN cabling carrying thin Ethernet baseband communications. However, this requires that baseband signal energy at frequencies up to 25 MHz be blocked from entering the broadband video feed by a high pass filter. This filtering eliminates the possibility of sending upstream messages from the home to the cable service provider at, for instance, the 5 to 11 Mhz upstream channel currently supported by cable television service providers. Furthermore, typical baseband transceivers are designed to operate with twisted pair cable or 50 ohm coaxial lines, not the 75 ohm coaxial cable pre-installed in homes and used for cable television delivery. [0005]
  • The creation of a home personal computer network has thus entailed a significant amount of cable routing through interior walls of the household, which is a time consuming and expensive procedure. What is needed therefore, is a system and method of creating a home personal computer network without the necessity of installing dedicated network cabling. [0006]
  • SUMMARY OF THE INVENTION
  • In one embodiment, the present invention includes a communication system comprising an upstream source of broadband communications and a downstream local area network. The upstream source of broadband communications is coupled to the downstream local area network through a notch filter. Other embodiments of the present invention include a local-area-network of computing devices comprising a notch filter comprising a first port and a second port, wherein the first port is coupled to a first cable and the second port is coupled to a second cable. In addition, the first port comprises an input port for signals carried by the first cable, and the second port comprises an output port coupling notch filtered signals to the second cable. A plurality of computing devices are coupled to the second cable. [0007]
  • The invention also comprises methods of interconnecting computing devices. One method comprises receiving a signal comprising a plurality of cable television channels from a first coaxial cable, filtering out a portion of that signal to produce a filtered signal, and coupling the filtered signal to pre-installed cable television wiring. A plurality of computing devices are coupled to the pre-installed cable television wiring, which then communicate messages by modulating a carrier having a frequency within the filtered out portion. [0008]
  • A notch filter comprising a first port adapted for connection to a video distribution system and a second port adapted for connection to a local-area-network are also provided by the invention, as are new computing devices. Such computing devices may comprise first and second receivers, each configured to receive a broadband signal in the frequency band from approximately 50 to 750 MHz. Also, the computing devices may comprise first and second transmitters, wherein the first transmitter is configured to transmit a broadband signal in the frequency band from approximately 5 to 42 MHz, and the second transmitter is coupled to transmit a broadband signal in the frequency band from approximately 50 to 750 MHz.[0009]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a block diagram illustrating the basic components of a cable television distribution system. [0010]
  • FIG. 2 is a graphical representation of the signals comprising a standard 6 MHz broadcast or cable television channel. [0011]
  • FIG. 3 is a system level block diagram of a LAN implemented on cable television wiring inside a residence. [0012]
  • FIG. 4 is a graphical representation of the signal attenuation produced by the notch filter of FIG. 3. [0013]
  • FIG. 5 is a block diagram of a preferred computing device for coupling to the LAN of FIG. 3.[0014]
  • DETAILED DESCRIPTION OF THE INVENTION
  • Embodiments of the invention will now be described with reference to the accompanying Figures, wherein like numerals refer to like elements throughout. The terminology used in the description is intended to be interpreted in its broadest reasonable manner, even though it is being utilized in conjunction with a detailed description of certain specific embodiments of the invention. This is further emphasized below with respect to some particular terms used herein. Any terminology intended to be interpreted by the reader in any restricted manner will be overtly and specifically defined as such in this specification. [0015]
  • As discussed above, one expense involved in the establishment of a local-area-network of computing devices is the provision of suitable interconnecting wiring. One aspect of the present invention mitigates this expense by using existing “community antenna television” wiring (or “CATV” or cable television wiring) within a structure to support not only cable television reception, but also network communications between computing devices within the structure. Referring now to FIG. 1, a cable distribution system comprising headend transmission equipment [0016] 10 operated by the cable television service provider is illustrated. As is known in the art, the “headend” of the cable transmission system is the point where UHF/VHF/FM and/or satellite television signals are fed into the system. The headend 10 is coupled to a distribution cable 12 that runs on a pole or underground through a neighborhood which receives cable television service. The individual residences 14 each receive the television signal, which may of course comprise both video and audio signals, from the distribution cable 12 via service drops 16.
  • The service drops [0017] 16 typically comprise 75 ohm coaxial cable, and extend onto the premises as a 75 ohm coaxial cable bus or tree configuration 18 internal to each residence 14. The on-premises cabling 18 is generally routed to several rooms of the residence 14, including the living and family rooms, as well as the bedrooms, where it is connected to one or more television receivers 20.
  • Initially, cable television service included only communication of television channels in a downstream path [0018] 22 to subscribers. Currently, downstream communication is accomplished in the frequency band between approximately 50 and 750 MHz. This provides sufficient bandwidth for dozens of television channels, each occupying a 6 MHz wide portion of the spectrum. Furthermore, spectral efficiency can be improved by a factor of about three with the implementation of currently available digital transmission techniques, so that delivery of hundreds of television channels can be expected in the future.
  • Many cable distribution systems have now been configured to also support upstream communication to the cable television service provider. This upstream communication path [0019] 24 has typically been performed on the frequency band between approximately 5 and 42 MHz, comprising a bandwidth of approximately six standard television channels. One use of this upstream communication capacity is the consumer issuance of pay-per-view signals to the cable service provider. This communication occurs generally in an upstream band from approximately 5 to 11 MHz. As will be explained below, it is one aspect of the present invention that the on-premises cabling 18 can be used to support a local area computer network in addition to cable television service by utilizing a portion of the downstream spectral bandwidth 22 for LAN communication. Using the methods and apparatus of the present invention, this is accomplished without interfering with the upstream communication path 24.
  • The downstream bandwidth of 50 to 750 MHz is partitioned into several 6 MHz wide channels which are grouped into sets of adjacent channels with unused bands provided between different channel sets. One such channel is illustrated in FIG. 2. The television signal comprises a luminance signal [0020] 30 modulated onto a carrier 32 which is 1.25 MHz above the lower band edge. A chrominance signal 34 is transmitted on a sub-carrier at about 3.58 MHz above the luminance carrier 32. Finally, an FM modulated audio signal 38 is provided on a carrier at about 4.5 Mhz above the luminance carrier 32. Adjacent luminance carriers 32 are assigned to frequencies which are spaced 6 MHz apart, thereby creating frequency division multiplexed channels of 6 MHz width. Almost all of the energy transmitted for a given channel is confined to the 6 MHz channel width to eliminate unacceptable adjacent channel interference.
  • With a downstream bandwidth of approximately 700 MHz, it can be appreciated that a very large number of 6 MHz wide channels can be supported, which number will only increase with the implementation of digital television transmission. It can therefore also be appreciated that in any given residence, many of these available channels will be either (1) unprogrammed by the cable service provider, (2) comprise premium channels to which the consumer does not subscribe, or (3) be channels which are simply not watched to an appreciable extent. Thus, a significant amount of available spectrum is not efficiently utilized. [0021]
  • Referring now to FIG. 3, a residence [0022] 14 is shown which illustrates the implementation of a LAN that communicates over this under-utilized bandwidth on the cable television infrastructure. As was described with reference to FIG. 1, the residence 14 is supplied with cable television service via a service drop 16 which supplies cable television signals to a bus or tree configuration of on-premises 75 ohm coaxial cable. Preferably, the service drop 16 passes through a notch filter 40 which isolates a segment 42 of the service drop from selected frequency bands which are defined by the stop bands of the notch filter 40. In some configurations, the isolated segment 42 has been wired to several rooms of the residence to supply cable television to those areas of the household where television reception may be desired. More specific characteristics of the isolation provided by the notch filter are described in more detail below with reference to FIG. 4. Briefly, the notch filter 40 effectively blocks selected bands of frequencies within the total 50 to 750 MHz downstream bandwidth from entering the residence in the downstream direction. The notch filter 40 also prevents upstream transmission out of the residence 14 in the same selected band. As is set forth in detail below, the notch filter clears a portion of the downstream spectrum for use as LAN bandwidth. The notch filter also helps ensure privacy of network communication because LAN signals are blocked from exiting the residence and being coupled to the cable television distribution network. The notch filter 40 may comprise a body having two ports. One port is adapted for connection to a video distribution system through, for example, a service drop 16. The second port is adapted for connection to a local-area-network through, for example, a segment of cable 42 inside a residence, as will be described in more detail below. It can be appreciated that a notch filter circuit, or two or more notch filter circuits, may be incorporated into other electronic devices currently used in communication systems such as cable distribution amplifiers, splitters, set-top converters, or even cable ready television sets. In these cases, of course, the device may include additional ports adapted for connection to other pieces of equipment.
  • Inside the residence [0023] 14, several television receivers may be coupled to the isolated segment 42 of the cable television wiring. The television receivers 20 may include upstream transmitters which operate in the 5 to 42 MHz upstream channels for the transmission of pay-per-view or other signals supported by the cable television service provider. Also coupled to the isolated segment of cable television wiring are a plurality of computing devices 44, 46, and 48. Although illustrated as PCs in FIG. 3, it can be appreciated that these computing devices 44, 46, 48 can be of many different types, including network computers, microprocessor controlled appliances, alarm systems, and the like. Because one or more bands of frequencies have been notched out of the cable wiring 42 by the notch filter 40, the computing devices 44, 46, and 48 can communicate in the notched out bands using known LAN configurations described below.
  • LAN physical layers can be broadly grouped into two different classes: baseband and broadband. A baseband network transmits data as alternating positive and negative voltage levels on the LAN interconnecting cable. A broadband network encodes data as phase, amplitude, and/or frequency shifts onto a sine wave carrier. Industry standard physical layers of both types have been defined in two standards promulgated by Institute of Electrical and Electronic Engineers (IEEE). These standards are set forth in ANSI/IEEE 802.3, 1996 Edition and IEEE 802.4-1990, which publications are well known to those of skill in the art. These two IEEE standards are hereby incorporated by reference in their entirety. [0024]
  • Baseband communication between the computing devices [0025] 44, 46, 48 includes serious disadvantages because of the desire to preserve the availability of the 5 to 42 MHz band for upstream communications to the cable service provider. Accordingly, the residence computing devices 44, 46, 48 may utilize broadband communication. This is compatible with the pre-installed 75 ohm coaxial cable, and also allows signal energy to be contained within the bands of frequencies notched out by the filter 40. Furthermore, this configuration prevents LAN interference with those downstream cable television channels which are not notched out by the filter 40, and also prevents interference with upstream communications in the 5 to 42 MHz band. Specific LAN physical layers which may be implemented include the 10BROAD36 configuration defined in IEEE 802.3 and the broadband token passing networks defined in IEEE 802.4. Device interface hardware for establishing communication over these broadband networks is well known to those of skill in the art.
  • The broadband LAN of FIG. 3 may be a single cable configuration utilizing two frequency bands for communication, as only a single cable is generally strung within the residence to distribute cable television signals. In such single cable broadband networks, the networked devices receive data at one carrier frequency and transmit data at a second carrier frequency. Accordingly, the LAN of FIG. 3 may include a headend frequency converter [0026] 50. This device receives inbound communications from each device 44, 46, 48, in a first frequency band, and converts them to outbound communications in a second frequency band which are received by the computing devices. It is, of course, preferred for both transmit and receive frequency bands to be within notched out frequency bands created by the notch filter 40.
  • Referring now to FIG. 4, the characteristics of the notch filter [0027] 40 will be described. The notch filter 40 may be of active or passive configuration, and may further be made tunable. Electrically, the notch filter 40 defines a response curve 60 of gain as a function of frequency. The filter 40 may exhibit a signal attenuation which reduces the incoming cable television signal strength within two selected bands 62, 63 to below a noise floor of approximately −30 dBmV/14 MHz. In one embodiment, the center frequencies 64, 65 of the two bands are approximately 192.25 MHz apart, to be compatible with the transmit/receive band separation adopted in IEEE 802.3 and 802.4. It can be appreciated that deeper attenuation of the downstream signal will improve the internal broadband network signal to noise ratio.
  • In the above described embodiment, the attenuation is sufficient to reduce the signals within the selected bands of frequencies to at or below the maximum cable noise levels allowed by IEEE 802.3. However, signal attenuation this great may not be necessary to implement a LAN in accordance with the present invention. What is important is that the attenuation be sufficient for broadband communication between the on-premises networked devices [0028] 44, 46, 48 to occur on carriers within the notch filter stop bands 62, 63 with reasonable reliability. For some broadband networks connected to some standard cable television signals, a 20 dB or greater signal attenuation provides sufficient rejection of the cable television signal to allow reliable internal broadband communication over the cable wiring 42 at carrier frequencies within the rejected bands, and in some cases, the required attenuation may be less. One possible situation where notch filter attenuation may not need to be particularly deep is where the stop bands of the notch filter reside in regions of the downstream spectrum that are not being utilized by the cable television service provider to deliver downstream signals. In this case there is no downstream signal requiring attenuation, thereby reducing the need for deep notch filter attenuation. It may be noted however that some notch filter attenuation may still be desirable to prevent excess LAN signal energy from exiting the residence and being coupled to the cable drop 16 and then to the rest of the upstream distribution system.
  • In the embodiment illustrated in FIG. 4, the notch filter “stop bands” [0029] 62, 63 comprise the frequency bands for which the signal level of the downstream cable television signals is reduced to at least below −30 dBmV/14 MHz noise level. In this embodiment, these frequencies are considered “rejected,” and the cable on the other side of the filter 40 is considered isolated from these frequency bands. In accordance with the above discussion, however, a “stop band” does not necessarily require this level of attenuation, and the term “stop band” is not intended to be defined by specific numerical attenuation values. Rather, “stop band” is intended to denote that band of frequencies for which the attenuation of the notch filter is sufficient to allow broadband LAN communication within the stop band on cable coupled to the output of the notch filter. As used herein, such a stop band defines a band of “rejected” frequencies, and cabling coupled to the output of the notch filter is isolated from those rejected frequencies. It can be appreciated therefore that the notch filter 40 attenuation required to create a stop band will vary from system to system, and will depend on the nature of the LAN being used in the residence, the strength of the incoming cable television signal, as well as many other factors. Appropriate notch filter attenuation values may be readily determined by those of skill in the art for specific implementations of the invention.
  • In addition to the depth, the widths [0030] 66, 67 of the stop bands may also be variable, as well as the center frequencies 64, 65. These values may be chosen in accordance with the nature of the incoming television signal and the nature of the LAN being implemented on the output of the notch filter 40. The center frequencies 64, 65 of the stop bands may be in the cable television downstream communication band somewhere between approximately 50 and 750 MHz, with the value selected to provide minimal interference with the consumer's reception of desired cable television channels. Compatibility with IEEE 802.3 requires the stop band center frequencies to be 192.25 MHz apart, with the lower frequency band 62 being dedicated to transmission of messages by the computing devices 44, 46, 48, and with the higher frequency band 63 being dedicated to reception of message by the computing devices 44, 46, 48. In one embodiment, the transmit stop band resides from 53.75 MHz to 71.75 MHz, and the receive stop band resides from 246 to 264 MHz. These bands coincide with certain transmit and receive channels for a broadband network compatible with IEEE 802.3. Of course, different carrier frequencies can be chosen, being selected to produce stop bands which attenuate only cable television channels which the user is not reluctant to lose. In some cases, it will be desirable to raise the stop band frequencies and corresponding LAN carrier frequencies because the transmit bands allocated by IEEE 802.3 reside in the Low Band (i.e. channels 2-6) of the incoming cable television service, and a consumer may prefer not to notch these particular channels out.
  • The widths [0031] 66, 67 of the stop band should be wide enough to accommodate the bandwidth requirements of the LAN being implemented. For the embodiment discussed above, 18 MHz bandwidth (including a 4 MHz collision enforcement band) is used for each of the transmit and receive bands. Generally, bandwidth requirements decrease with decreasing desired LAN data transfer rate. A 1 Mb/sec broadband LAN may require only 1-2 MHZ of bandwidth, whereas a 10 Mb/sec broadband LAN may require 12 or more MHz of bandwidth. In the residential environment, 1 Mb/sec internal communication data rate may often be sufficient, and in this case, each stop band can reside entirely within a single 6 MHz cable television channel. The center frequencies 64, 65 of the stop bands may then be chosen to be approximately centrally located within downstream cable television channels. Higher speed LANs, like the 10BROAD36 of IEEE 802.3 which requires a total of 36 MHz bandwidth, will require stop band widths that reject several incoming cable television channels. In these cases, finding several unutilized or underutilized channels should not be difficult. The design and construction of notch filter circuits which produce stop band depths, widths, and center frequencies suitable for use with the present invention is well known to those of skill in the art, and the details of the notch filter 40 circuit are accordingly not further described herein.
  • To take full advantage of the communication paths of the invention, a computing device may incorporate a plurality of receivers and transmitters. Such a computing device is illustrated in FIG. 5. In this embodiment, the coaxial cable [0032] 42 is coupled to the computing device 44, and is routed to a first tunable receiver/demodulator 70 having a frequency range of approximately 50 to 750 MHz. This receiver additionally may comprise one or more demodulators for retrieving NTSC or PAL encoded video from the cable television service, FM audio signals, and also for recovering digital data from, for example, cable service provided Internet access. The computing device may also comprise a modulator and transmitter 72 coupled to the cable 42 for transmitting upstream signals to the cable television service provider. This transmitter 72 may operate in the 5 to 42 MHz band currently supported by many cable television providers. Furthermore, for on-premises communication of internal data with other computing devices within the residence, the computing device 44 additionally may comprise a dual frequency modem 74 coupled to the cable 42 for transmission and reception of broadband signals on the LAN inside the residence. The modem 74 may operate at a transmission frequency f1 and a receiving frequency f2 which are each within a stop band of the notch filter 40.
  • As with the circuitry for the notch filter [0033] 40, suitable transmitters, receivers, modulators, and demodulators for communicating as described above may be produced by those of skill in the art without undue experimentation or further inventive contribution, and further details of their construction is not described herein. These individual components of the above described system have been commercially made and used in other broadband communication systems such as LAN equipment compatible with the broadband specifications of IEEE 802.3 and 802.4, as well as in television set top converters and cable modems.
  • The expense and difficulty of installing a home personal computer network is significantly reduced with the invention because existing wiring in the residence is also utilized to support a LAN. This is accomplished by utilizing existing cable television wiring as LAN interconnecting cable. Implementation of such a system provides many advantages over the creation of a separate in-home computer network. In addition to the fact that installation is relatively inexpensive because the cable is already installed, the cable itself supports very high data rates and produces comparatively low levels of electromagnetic interference. Furthermore, the computers on the network are coupled to the cable television service and are therefore, able to receive all of the video or data services available from the cable television service provider. [0034]
  • The foregoing description details certain embodiments of the invention and describes the best mode contemplated. It will be appreciated, however, that no matter how detailed the foregoing appears in text, the invention can be practiced in many ways. For example, many different types of broadband LANs can be supported by cable television wiring which use different modulation and medium access control techniques. Furthermore, LANs which may not be classified as “broadband” may be used in the system of the present invention as long as the signal energy of the LAN communication can be confined to a selected portion of the available spectral bandwidth of the cable. It will also be appreciated that the specific carrier frequencies and communication frequency bands discussed above are currently preferable because of compatibility with certain standards and cable distribution systems currently developed. The invention, however, is not limited to these frequencies and frequency bands. In addition, although the system has been described in the context of the delivery of cable television to residential buildings, the invention is not limited to this environment, and may be utilized in any communication system where it is desirable to more efficiently use available bandwidth and/or to avoid the expense of installing additional LAN cabling. As is also stated above, it should be noted that the use of particular terminology when describing certain features or aspects of the present invention should not be taken to imply that the broadest reasonable meaning of such terminology is not intended, or that the terminology is being re-defined herein to be restricted to including any specific characteristics of the features or aspects of the invention with which that terminology is associated. [0035]
  • The invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiment is to be considered in all respects only as illustrative and not restrictive, and the scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalents of the claims are to be embraced within their scope. [0036]

Claims (51)

What is claimed is:
1. A network bus comprising:
a notch filter coupled to a coaxial cable, said coaxial cable routed in a tree configuration to a plurality of locations of a building, said notch filter configured to filter out a portion of video signals carried by said coaxial cable; and
a frequency converter, coupled to said coaxial cable, configured to receive signals from said coaxial cable at a first frequency and to forward said signals at a second frequency, wherein said first and second frequencies are within said filtered out portion.
2. The network bus of claim 1, wherein said frequency converter is configured to forward said signals via said coaxial cable.
3. The network bus of claim 2, wherein said building comprises a residential building.
4. The network bus of claim 1, wherein said video signals are delivered to said coaxial cable from a headend equipment of a community antenna television system.
5. The network bus of claim 1, wherein said filtered out portion comprises a frequency range from approximately 50 MHz to approximately 750 MHz.
6. A local area computer network comprising:
a notch filter configured to receive a signal from a cable television transmission system and to filter out a portion of said signal in the range of approximately 50 MHz to approximately 750 MHz to produce a filtered signal;
a community antenna television wire configured to receive said filtered signal and routed in a tree configuration to a plurality of locations of a residence, said wire coupled to said notch filter;
a plurality of computers coupled to said wire, each of said computers having a modem configured to receive and transmit broadband signals between said computers;
wherein said computers are configured to send and receive communications between different ones of said computers via said modem by modulating a carrier having a frequency within said filtered out portion
7. The local area network of claim 6, wherein said personal computer are configured to send signals to said cable television transmission system using a carrier frequency in the range of approximately 0 MHz to approximately 50 MHz.
8. The local area network of claim 7, wherein said modem is configured to receive a signal at a first frequency and to transmit said signal at a second frequency.
9. The local area network of claim 8, further comprising a frequency converter configured to convert signals from said first frequency to said second frequency.
10. The local area network of claim 9, wherein at least some of said computers are configured to receive digital data from the Internet via said wire.
11. The local area network of claim 9, wherein at least some of said computers are configured to receive FM audio signals via said wire.
12. The local area network of claim 9, wherein at least one of said computers is configured to receive signals from said transmission system using a carrier frequency in the range of approximately 0 MHz to approximately 50 MHz.
13. A method of making a local area network, the method comprising:
routing community antenna television wiring in a tree configuration to different parts of a structure;
coupling a notch filter to said wiring for filtering out one or more television broadcasts delivered to said wiring by a service drop of a community antenna television distribution system;
coupling to said wiring a plurality of computing devices; and
configuring at least some of said computing devices for two-way communication with others of said computing devices, wherein the two-way communication is carried at least in part over said wiring at at least one frequency within said filtered out television broadcasts.
14. The method of claim 13, wherein each of at least some of said computing devices comprises a receiver configured to receive video signals from said headend transmission equipment, a transmitter for forwarding signals to said headend transmission equipment, and a modem configured to receive and transmit broadband signals between said computing devices.
15. The method of claim 13, wherein said computing devices comprise a computer and a microprocessor controlled appliance.
16. The method of claim 15, wherein said computing devices comprise an alarm system.
17. The method of claim 13, wherein said filtered out television broadcasts comprise a portion of the frequency range between approximately 50 MHz to 750 MHz.
18. The method of according to any of claims 14-17, wherein said structure comprises a residential building.
19. The method of claim 13, wherein at least some of said computing devices transmit communications at a first frequency and receive communications at a second frequency, wherein said first and second frequency are within said filtered out television broadcasts.
20. A method of networking computing devices, the method comprising:
coupling a notch filter to coaxial wiring carrying television signals, wherein the coaxial wiring is routed in a tree configuration to a plurality of locations in a building.
filtering out a frequency band comprising a portion of said television signals with the notch filter; and
establishing two-way communications between at least two computing devices, wherein said communications are carried at least in part over said coaxial wiring utilizing said frequency band.
21. The method of claim 20, wherein said building comprises a residential building.
22. The method of claim 21, wherein said residential building comprises a plurality of rooms of a residence.
23. The method of claim 22, wherein said television signals are delivered to said building via a service drop of a community antenna television system.
24. The method of claim 20, wherein said frequency band spans the range from approximately 50 MHz to approximately 750 MHz.
25. The method of claim 23, further comprising blocking at least some of said communications from being transmitted outside said local area network via said service drop.
26. The method of claim 20, wherein at least some of said computing devices transmit said communications at a first frequency and receive said communications at a second frequency, wherein said first and second frequencies are in said frequency band.
27. The method of claim 26, further comprising providing a frequency converter configured to receive said communications at said first frequency and to forward said communications at said second frequency.
28. The method of claim 20, wherein one of the computing devices sends a communication to another of the computing devices at a first frequency, and wherein said another computing device receives said communication at a second frequency.
29. The method of claim 23, wherein said computing devices comprise a network computer.
30. The method of claim 23, wherein said computing devices comprise a microprocessor controlled appliance.
31. The method of claim 23, wherein said computing devices comprises an alarm system.
32. The method of claim 20, wherein said computing devices comprise a network computer and a microprocessor controlled appliance.
33. The method of claim 23, wherein said computing devices comprise a network computer, a microprocessor controlled appliance, and an alarm system.
34. A network device comprising:
a receiver for receiving a television signal from a community antenna television system;
a transmitter for transmitting signals to a headend equipment of said community antenna television system; and
a modem configured to receive and transmit broadband signals between computing devices.
35. The network device of claim 34, wherein said modem is configured to receive signals at a first frequency and to transmit said signals at a second frequency.
36. The network device of claim 34, wherein said receiver is configured to receive digital data from the Internet.
37. The network device of claim 34, wherein said receiver is configured to receive FM audio signals.
38. The network device of claim 34, wherein said receiver is configured to receive signals in the range of approximately 50 to 750 MHz.
39. The network device of claim 34, wherein said network device comprises a microprocessor controlled appliance.
40. The network device of claim 34, wherein said network device comprises a computer.
41. The network device of claim 34, wherein said computing devices comprise a microprocessor controlled appliance and an alarm system.
42. A method of communicating data between computing devices comprising:
receiving a television signal from a headend transmission equipment of a cable television transmission system;
filtering out a portion of said television signal in the range of approximately 50 MHz to approximately 750 MHz to produce a filtered signal;
coupling said filtered signal to unlooped cable television wiring;
coupling a plurality of computing devices to said wiring, wherein each of at least some of said computing devices comprises a modem configured to receive and transmit broadband signals between said computing devices; and
establishing two-way communications, at least in part over said cable television wiring, between different ones of said computing devices via said modem using at least one frequency within said filtered out portion.
43. The method of claim 42, wherein each of at least some of said computing devices comprises a receiver configured to receive signals from said headend transmission equipment and a transmitter for forwarding signals to said headend transmission equipment.
44. The method of claim 42, further comprising forwarding a signal from at least one of said computing devices to said transmission system using a frequency in the range of approximately 0 MHz to approximately 50 MHz.
45. The method of claim 42, wherein said wiring is routed in a tree configuration to a plurality of different locations of a residential building.
46. The method of claim 42, wherein said wiring comprises coaxial cable.
47. The method of claim 42, wherein said computing devices comprise a network computer.
48. The method of claim 42, wherein said modem in configured to receive communications at a first frequency and to send communications at a second frequency.
49. The method of claim 42, further comprising coupling a frequency converter to said wiring, wherein said frequency converter receives a communication at a first frequency and forwards said communication at a second frequency.
50. The method of claim 42, wherein said computing devices comprise a personal computer.
51. The method of claim 50, wherein said computing devices comprise a microprocessor controlled appliance.
US10/666,184 1997-04-09 2003-09-17 Broadband cable television and computer network Abandoned US20040060072A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US84008397A true 1997-04-09 1997-04-09
US08/872,010 US6637030B1 (en) 1997-04-09 1997-06-09 Broadband cable television and computer network
US10/666,184 US20040060072A1 (en) 1997-04-09 2003-09-17 Broadband cable television and computer network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/666,184 US20040060072A1 (en) 1997-04-09 2003-09-17 Broadband cable television and computer network

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US08/872,010 Continuation US6637030B1 (en) 1997-04-09 1997-06-09 Broadband cable television and computer network

Publications (1)

Publication Number Publication Date
US20040060072A1 true US20040060072A1 (en) 2004-03-25

Family

ID=28792540

Family Applications (2)

Application Number Title Priority Date Filing Date
US08/872,010 Expired - Fee Related US6637030B1 (en) 1997-04-09 1997-06-09 Broadband cable television and computer network
US10/666,184 Abandoned US20040060072A1 (en) 1997-04-09 2003-09-17 Broadband cable television and computer network

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US08/872,010 Expired - Fee Related US6637030B1 (en) 1997-04-09 1997-06-09 Broadband cable television and computer network

Country Status (1)

Country Link
US (2) US6637030B1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020059642A1 (en) * 2000-11-14 2002-05-16 Russ Samuel H. Networked subscriber television distribution
US20030192047A1 (en) * 2002-03-22 2003-10-09 Gaul Michael A. Exporting data from a digital home communication terminal to a client device
US20040015997A1 (en) * 2002-07-22 2004-01-22 Ahmad Ansari Centralized in-home unit to provide video and data to multiple locations
US20040068739A1 (en) * 2002-10-04 2004-04-08 Russ Samuel H. Networked multimedia system having a multi-room interactive network guide
US20040068747A1 (en) * 2002-10-02 2004-04-08 Robertson Neil C. Networked multimedia system
US20040068744A1 (en) * 2000-11-14 2004-04-08 Claussen Paul J. Proximity detection using wireless connectivity in a communications system
US20040068752A1 (en) * 2002-10-02 2004-04-08 Parker Leslie T. Systems and methods for providing television signals to multiple televisions located at a customer premises
US20040068754A1 (en) * 2002-10-02 2004-04-08 Russ Samuel H. Expandable tuning capability
US20040133911A1 (en) * 2002-10-04 2004-07-08 Russ Samuel H. Subscriber network in a satellite system
US20050083856A1 (en) * 2003-05-22 2005-04-21 John Morelli Networking methods and apparatus
US20050155052A1 (en) * 2002-10-04 2005-07-14 Barbara Ostrowska Parental control for a networked multiroom system
US20060117354A1 (en) * 2004-11-29 2006-06-01 Mark Schutte Consolidating video-on-demand (VOD) services with multi-room personal video recording (MR-PVR) services
US20070074247A1 (en) * 2005-09-26 2007-03-29 Samsung Electronics Co., Ltd. Home network device and method of receiving and transmitting sound information using the same
US20070261083A1 (en) * 2002-07-08 2007-11-08 Ahmad Ansari System for providing DBS DSL video services to multiple display devices
US20080066085A1 (en) * 2002-10-04 2008-03-13 Davies David B Systems and methods for operating a peripheral record playback device in a networked multimedia system
US20080148325A1 (en) * 2003-01-15 2008-06-19 Robertson Neil C Full duplex wideband communications system for a local coaxial network
US7870584B2 (en) 2002-08-02 2011-01-11 Russ Samuel H Interactive program guide with selectable updating
US7876998B2 (en) 2005-10-05 2011-01-25 Wall William E DVD playback over multi-room by copying to HDD
US20110255452A1 (en) * 2010-04-15 2011-10-20 Time Warner Cable Inc. Apparatus and method for increasing upstream capacity in a broadband communications system
US8046806B2 (en) 2002-10-04 2011-10-25 Wall William E Multiroom point of deployment module

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6973669B2 (en) * 1993-03-29 2005-12-06 Microsoft Corporation Pausing television programming in response to selection of hypertext link
US20020048448A1 (en) * 1993-03-29 2002-04-25 Microsoft Corporation Pausing the display of a television program as a signal including the television program is received
US20030131358A1 (en) * 1997-11-18 2003-07-10 Gerard Busch System and process for accessing digital data on a video network
US7127734B1 (en) * 1999-04-12 2006-10-24 Texas Instruments Incorporated System and methods for home network communications
US6424998B2 (en) * 1999-04-28 2002-07-23 World Theatre, Inc. System permitting the display of video or still image content on selected displays of an electronic display network according to customer dictates
US6842459B1 (en) 2000-04-19 2005-01-11 Serconet Ltd. Network combining wired and non-wired segments
US9094226B2 (en) 2000-08-30 2015-07-28 Broadcom Corporation Home network system and method
US8724485B2 (en) 2000-08-30 2014-05-13 Broadcom Corporation Home network system and method
EP1346513B1 (en) 2000-08-30 2010-10-20 Tmt Coaxial Networks Inc. A home network system and method
US20020083475A1 (en) * 2000-12-27 2002-06-27 Earl Hennenhoefer Intelligent device system and method for distribution of digital signals on a wideband signal distribution system
KR100682546B1 (en) * 2000-12-28 2007-02-15 란게토 가부시키가이샤 Computer network
US20090031419A1 (en) 2001-05-24 2009-01-29 Indra Laksono Multimedia system and server and methods for use therewith
US8291457B2 (en) 2001-05-24 2012-10-16 Vixs Systems, Inc. Channel selection in a multimedia system
US7159231B1 (en) * 2001-08-01 2007-01-02 Cisco Technology, Inc. Intermission content
US7107608B2 (en) * 2001-10-01 2006-09-12 Microsoft Corporation Remote task scheduling for a set top box
EP2234394A1 (en) 2001-10-11 2010-09-29 Mosaid Technologies Incorporated Coupling device
US7102699B2 (en) * 2002-03-14 2006-09-05 Matsushita Electric Industrial Co. Ltd. Radio frequency distribution network system
US20040177381A1 (en) * 2002-09-05 2004-09-09 Tiaris, Inc. Home network system which supports legacy digital set top box devices
IL152824A (en) 2002-11-13 2012-05-31 Mosaid Technologies Inc Addressable outlet and a network using same
IL154921A (en) 2003-03-13 2011-02-28 Mosaid Technologies Inc Telephone system having multiple distinct sources and accessories therefor
IL157787A (en) 2003-09-07 2010-12-30 Mosaid Technologies Inc Modular outlet for data communications network
IL160417A (en) 2004-02-16 2011-04-28 Mosaid Technologies Inc Outlet add-on module
US8763063B2 (en) * 2004-06-01 2014-06-24 Time Warner Cable Enterprises Llc Controlled isolation splitter apparatus and methods
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
CN100414905C (en) * 2004-12-30 2008-08-27 华为技术有限公司 Broadband access network of ensuring QoS of survice, and method thereof
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8090043B2 (en) 2006-11-20 2012-01-03 Broadcom Corporation Apparatus and methods for compensating for signal imbalance in a receiver
US7782850B2 (en) 2006-11-20 2010-08-24 Broadcom Corporation MAC to PHY interface apparatus and methods for transmission of packets through a communications network
US7697522B2 (en) * 2006-11-20 2010-04-13 Broadcom Corporation Systems and methods for aggregation of packets for transmission through a communications network
US7742495B2 (en) 2006-11-20 2010-06-22 Broadcom Corporation System and method for retransmitting packets over a network of communication channels
JP2008160451A (en) * 2006-12-22 2008-07-10 Toshiba Corp Television/lan signal dividing device, indoor lan system, and television/lan signal dividing method
US20080247401A1 (en) * 2007-04-06 2008-10-09 Texas Instruments Incorporated Remote Access to Home Communication Services
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
US8345553B2 (en) 2007-05-31 2013-01-01 Broadcom Corporation Apparatus and methods for reduction of transmission delay in a communication network
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US7911272B2 (en) * 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US20090165070A1 (en) * 2007-12-19 2009-06-25 Broadcom Corporation SYSTEMS AND METHODS FOR PROVIDING A MoCA COMPATABILITY STRATEGY
US8098770B2 (en) 2008-05-06 2012-01-17 Broadcom Corporation Unbiased signal-to-noise ratio estimation for receiver having channel estimation error
WO2009145887A1 (en) * 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US9112717B2 (en) 2008-07-31 2015-08-18 Broadcom Corporation Systems and methods for providing a MoCA power management strategy
US8213309B2 (en) 2008-12-22 2012-07-03 Broadcom Corporation Systems and methods for reducing latency and reservation request overhead in a communications network
US8254413B2 (en) 2008-12-22 2012-08-28 Broadcom Corporation Systems and methods for physical layer (“PHY”) concatenation in a multimedia over coax alliance network
US8238227B2 (en) 2008-12-22 2012-08-07 Broadcom Corporation Systems and methods for providing a MoCA improved performance for short burst packets
WO2010082911A1 (en) * 2009-01-15 2010-07-22 Thomson Licensing Method and apparatus for managing a frequency spectrum
US8553547B2 (en) 2009-03-30 2013-10-08 Broadcom Corporation Systems and methods for retransmitting packets over a network of communication channels
US20100254278A1 (en) 2009-04-07 2010-10-07 Broadcom Corporation Assessment in an information network
US8730798B2 (en) 2009-05-05 2014-05-20 Broadcom Corporation Transmitter channel throughput in an information network
US8867355B2 (en) 2009-07-14 2014-10-21 Broadcom Corporation MoCA multicast handling
US8942250B2 (en) 2009-10-07 2015-01-27 Broadcom Corporation Systems and methods for providing service (“SRV”) node selection
US8611327B2 (en) 2010-02-22 2013-12-17 Broadcom Corporation Method and apparatus for policing a QoS flow in a MoCA 2.0 network
US8514860B2 (en) 2010-02-23 2013-08-20 Broadcom Corporation Systems and methods for implementing a high throughput mode for a MoCA device
KR20140026458A (en) 2011-04-08 2014-03-05 파커비전, 인크. Systems and methods of rf power transmission, modulation, and amplification
JP6174574B2 (en) 2011-06-02 2017-08-02 パーカーヴィジョン インコーポレイテッド Antenna control
EP3047348A4 (en) 2013-09-17 2016-09-07 Parkervision Inc Method, apparatus and system for rendering an information bearing function of time

Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859457A (en) * 1971-05-24 1975-01-07 Digital Communications Inc Selective video reception inhibiting apparatus
USRE31639E (en) * 1975-03-14 1984-07-31 Bidirectional unicable switching system
US4694325A (en) * 1984-11-16 1987-09-15 Deutsche Itt Industries Gmbh Interface circuit contained in a color-television receiver and serving to connect a home computer
US4896349A (en) * 1985-03-26 1990-01-23 Matsushita Electric Industrial Co., Ltd. Communication controller in a home bus system
US5086385A (en) * 1989-01-31 1992-02-04 Custom Command Systems Expandable home automation system
US5126840A (en) * 1988-04-21 1992-06-30 Videotron Ltee Filter circuit receiving upstream signals for use in a CATV network
US5130793A (en) * 1988-07-22 1992-07-14 Etat Francais Reconfigurable multiple-point wired in-house network for simultaneous and/or alternative distribution of several types of signals, notably baseband images, and method for the configuration of a system such as this
US5185762A (en) * 1991-05-15 1993-02-09 Scs Mobilecom, Inc. Spread spectrum microwave overlay with notch filter
US5255267A (en) * 1992-03-09 1993-10-19 First Pacific Networks, Inc. Apparatus for combining broadband and baseband signal transmissions
US5396359A (en) * 1992-11-12 1995-03-07 The United States Of America As Represented By The Secretary Of The Air Force Node for grid type single mode fiber optic local area network using tunable filters
USRE34895E (en) * 1989-10-10 1995-04-04 Matsushita Electric Industrial Co., Ltd. Home automation system
US5408500A (en) * 1993-02-17 1995-04-18 Digital Equipment Corporation Method and apparatus for transmission of local area network signals over a single unshielded twisted pair
US5434611A (en) * 1991-12-16 1995-07-18 Matsushita Electric Industrial Co., Ltd. Home health care system which employs a two-way community antenna television network to permit communication between a doctor and patients at different locations
US5440335A (en) * 1993-05-28 1995-08-08 U S West Advanced Technologies, Inc. Method and apparatus for delivering passband and telephony signals in a coaxial cable network
US5499241A (en) * 1993-09-17 1996-03-12 Scientific-Atlanta, Inc. Broadband communications system
US5499047A (en) * 1993-12-30 1996-03-12 Northern Telecom Limited Distribution network comprising coax and optical fiber paths for transmission of television and additional signals
US5512935A (en) * 1994-03-31 1996-04-30 At&T Corp. Apparatus and method for diplaying an alert to an individual personal computer user via the user's television connected to a cable television system
US5517487A (en) * 1993-07-19 1996-05-14 Modicon, Inc. System for increasing the capacity of existing local area networks that use shielded twisted wire pair medium
US5534913A (en) * 1994-03-31 1996-07-09 At&T Corp. Apparatus and method for integrating downstream data transfer over a cable television channel with upstream data carrier by other media
US5539880A (en) * 1993-09-28 1996-07-23 Lakhani; Abdul-Malik H. Cable-based interactive multimedia workstation network
US5557319A (en) * 1994-12-28 1996-09-17 U.S. Philips Corporation Subscriber return system for CATV full service networks
US5559625A (en) * 1992-09-14 1996-09-24 British Telecommunications Public Limited Company Distributive communications network
US5585837A (en) * 1995-03-15 1996-12-17 Nixon; Dale B. Distribution of local video signal with consumer cable television signal
US5625863A (en) * 1989-04-28 1997-04-29 Videocom, Inc. Video distribution system using in-wall wiring
US5742713A (en) * 1996-10-23 1998-04-21 Motorola, Inc. Methods and filter for isolating upstream ingress noise in a bi-directional cable system
US5760822A (en) * 1996-01-30 1998-06-02 Lucent Technologies Inc. Central node converter for local network having single coaxial cable
US5805806A (en) * 1995-12-18 1998-09-08 Intel Corporation Method and apparatus for providing interactive networking between televisions and personal computers
US6009465A (en) * 1996-01-22 1999-12-28 Svi Systems, Inc. Entertainment and information systems and related management networks for a remote video delivery system
US6195530B1 (en) * 1988-12-23 2001-02-27 Scientific-Atlanta, Inc. Selective messaging via on-screen display
US6288749B1 (en) * 1996-11-16 2001-09-11 Altec Lansing Technologies, Inc. Computer system with remote television display
US6738978B1 (en) * 1992-12-09 2004-05-18 Discovery Communications, Inc. Method and apparatus for targeted advertising

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5565910A (en) * 1993-03-26 1996-10-15 Vionx, Inc. Data and television network for digital computer workstations

Patent Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859457A (en) * 1971-05-24 1975-01-07 Digital Communications Inc Selective video reception inhibiting apparatus
USRE31639E (en) * 1975-03-14 1984-07-31 Bidirectional unicable switching system
US4694325A (en) * 1984-11-16 1987-09-15 Deutsche Itt Industries Gmbh Interface circuit contained in a color-television receiver and serving to connect a home computer
US4896349A (en) * 1985-03-26 1990-01-23 Matsushita Electric Industrial Co., Ltd. Communication controller in a home bus system
US5126840A (en) * 1988-04-21 1992-06-30 Videotron Ltee Filter circuit receiving upstream signals for use in a CATV network
US5130793A (en) * 1988-07-22 1992-07-14 Etat Francais Reconfigurable multiple-point wired in-house network for simultaneous and/or alternative distribution of several types of signals, notably baseband images, and method for the configuration of a system such as this
US6195530B1 (en) * 1988-12-23 2001-02-27 Scientific-Atlanta, Inc. Selective messaging via on-screen display
US5086385A (en) * 1989-01-31 1992-02-04 Custom Command Systems Expandable home automation system
US5625863A (en) * 1989-04-28 1997-04-29 Videocom, Inc. Video distribution system using in-wall wiring
USRE34895E (en) * 1989-10-10 1995-04-04 Matsushita Electric Industrial Co., Ltd. Home automation system
US5185762A (en) * 1991-05-15 1993-02-09 Scs Mobilecom, Inc. Spread spectrum microwave overlay with notch filter
US5434611A (en) * 1991-12-16 1995-07-18 Matsushita Electric Industrial Co., Ltd. Home health care system which employs a two-way community antenna television network to permit communication between a doctor and patients at different locations
US5255267A (en) * 1992-03-09 1993-10-19 First Pacific Networks, Inc. Apparatus for combining broadband and baseband signal transmissions
US5559625A (en) * 1992-09-14 1996-09-24 British Telecommunications Public Limited Company Distributive communications network
US5396359A (en) * 1992-11-12 1995-03-07 The United States Of America As Represented By The Secretary Of The Air Force Node for grid type single mode fiber optic local area network using tunable filters
US6738978B1 (en) * 1992-12-09 2004-05-18 Discovery Communications, Inc. Method and apparatus for targeted advertising
US5408500A (en) * 1993-02-17 1995-04-18 Digital Equipment Corporation Method and apparatus for transmission of local area network signals over a single unshielded twisted pair
US5440335A (en) * 1993-05-28 1995-08-08 U S West Advanced Technologies, Inc. Method and apparatus for delivering passband and telephony signals in a coaxial cable network
US5517487A (en) * 1993-07-19 1996-05-14 Modicon, Inc. System for increasing the capacity of existing local area networks that use shielded twisted wire pair medium
US5499241A (en) * 1993-09-17 1996-03-12 Scientific-Atlanta, Inc. Broadband communications system
US5539880A (en) * 1993-09-28 1996-07-23 Lakhani; Abdul-Malik H. Cable-based interactive multimedia workstation network
US5499047A (en) * 1993-12-30 1996-03-12 Northern Telecom Limited Distribution network comprising coax and optical fiber paths for transmission of television and additional signals
US5534913A (en) * 1994-03-31 1996-07-09 At&T Corp. Apparatus and method for integrating downstream data transfer over a cable television channel with upstream data carrier by other media
US5512935A (en) * 1994-03-31 1996-04-30 At&T Corp. Apparatus and method for diplaying an alert to an individual personal computer user via the user's television connected to a cable television system
US5557319A (en) * 1994-12-28 1996-09-17 U.S. Philips Corporation Subscriber return system for CATV full service networks
US5585837A (en) * 1995-03-15 1996-12-17 Nixon; Dale B. Distribution of local video signal with consumer cable television signal
US5805806A (en) * 1995-12-18 1998-09-08 Intel Corporation Method and apparatus for providing interactive networking between televisions and personal computers
US6009465A (en) * 1996-01-22 1999-12-28 Svi Systems, Inc. Entertainment and information systems and related management networks for a remote video delivery system
US5760822A (en) * 1996-01-30 1998-06-02 Lucent Technologies Inc. Central node converter for local network having single coaxial cable
US5742713A (en) * 1996-10-23 1998-04-21 Motorola, Inc. Methods and filter for isolating upstream ingress noise in a bi-directional cable system
US6288749B1 (en) * 1996-11-16 2001-09-11 Altec Lansing Technologies, Inc. Computer system with remote television display

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040068744A1 (en) * 2000-11-14 2004-04-08 Claussen Paul J. Proximity detection using wireless connectivity in a communications system
US8549567B2 (en) 2000-11-14 2013-10-01 Samuel H. Russ Media content sharing over a home network
US8127326B2 (en) 2000-11-14 2012-02-28 Claussen Paul J Proximity detection using wireless connectivity in a communications system
US7861272B2 (en) 2000-11-14 2010-12-28 Russ Samuel H Networked subscriber television distribution
US7849486B2 (en) 2000-11-14 2010-12-07 Russ Samuel H Networked subscriber television distribution
US20020059642A1 (en) * 2000-11-14 2002-05-16 Russ Samuel H. Networked subscriber television distribution
US20030192047A1 (en) * 2002-03-22 2003-10-09 Gaul Michael A. Exporting data from a digital home communication terminal to a client device
US20070261083A1 (en) * 2002-07-08 2007-11-08 Ahmad Ansari System for providing DBS DSL video services to multiple display devices
US8732771B2 (en) 2002-07-08 2014-05-20 At&T Intellectual Property I, L.P. System for providing DBS DSL video services to multiple display devices
US20040015997A1 (en) * 2002-07-22 2004-01-22 Ahmad Ansari Centralized in-home unit to provide video and data to multiple locations
US7870584B2 (en) 2002-08-02 2011-01-11 Russ Samuel H Interactive program guide with selectable updating
US20040068747A1 (en) * 2002-10-02 2004-04-08 Robertson Neil C. Networked multimedia system
US7908625B2 (en) 2002-10-02 2011-03-15 Robertson Neil C Networked multimedia system
US20040068754A1 (en) * 2002-10-02 2004-04-08 Russ Samuel H. Expandable tuning capability
US20040068752A1 (en) * 2002-10-02 2004-04-08 Parker Leslie T. Systems and methods for providing television signals to multiple televisions located at a customer premises
US8046806B2 (en) 2002-10-04 2011-10-25 Wall William E Multiroom point of deployment module
US9762970B2 (en) 2002-10-04 2017-09-12 Tech 5 Access of stored video from peer devices in a local network
US20080301738A1 (en) * 2002-10-04 2008-12-04 Davies David B Access of Stored Video From Peer Devices in a Local Network
US20050155052A1 (en) * 2002-10-04 2005-07-14 Barbara Ostrowska Parental control for a networked multiroom system
US8627385B2 (en) 2002-10-04 2014-01-07 David B. Davies Systems and methods for operating a peripheral record playback device in a networked multimedia system
US20040133911A1 (en) * 2002-10-04 2004-07-08 Russ Samuel H. Subscriber network in a satellite system
US20080066085A1 (en) * 2002-10-04 2008-03-13 Davies David B Systems and methods for operating a peripheral record playback device in a networked multimedia system
US20040068739A1 (en) * 2002-10-04 2004-04-08 Russ Samuel H. Networked multimedia system having a multi-room interactive network guide
US8966550B2 (en) 2002-10-04 2015-02-24 Cisco Technology, Inc. Home communication systems
US20080148325A1 (en) * 2003-01-15 2008-06-19 Robertson Neil C Full duplex wideband communications system for a local coaxial network
US8230470B2 (en) 2003-01-15 2012-07-24 Robertson Neil C Full duplex wideband communications system for a local coaxial network
US8094640B2 (en) 2003-01-15 2012-01-10 Robertson Neil C Full duplex wideband communications system for a local coaxial network
US7443808B2 (en) 2003-05-22 2008-10-28 Coaxsys, Inc. Networking methods and apparatus
US20050083856A1 (en) * 2003-05-22 2005-04-21 John Morelli Networking methods and apparatus
US20060117354A1 (en) * 2004-11-29 2006-06-01 Mark Schutte Consolidating video-on-demand (VOD) services with multi-room personal video recording (MR-PVR) services
US20070074247A1 (en) * 2005-09-26 2007-03-29 Samsung Electronics Co., Ltd. Home network device and method of receiving and transmitting sound information using the same
US9015587B2 (en) * 2005-09-26 2015-04-21 Samsung Electronics Co., Ltd. Home network device and method of receiving and transmitting sound information using the same
US7876998B2 (en) 2005-10-05 2011-01-25 Wall William E DVD playback over multi-room by copying to HDD
US8280229B2 (en) 2005-10-05 2012-10-02 Wall William E DVD playback over multi-room by copying to HDD
US20170214978A1 (en) * 2010-04-15 2017-07-27 Charter Communications Operating, Llc Apparatus and method for increasing upstream capacity in a broadband communications system
US20110255452A1 (en) * 2010-04-15 2011-10-20 Time Warner Cable Inc. Apparatus and method for increasing upstream capacity in a broadband communications system
US9825772B2 (en) * 2010-04-15 2017-11-21 Time Warner Cable Enterprises Llc Apparatus and method for increasing upstream capacity in a broadband communications system

Also Published As

Publication number Publication date
US6637030B1 (en) 2003-10-21

Similar Documents

Publication Publication Date Title
US8873586B2 (en) Network combining wired and non-wired segments
CA2114653C (en) Method and apparatus for broadband transmission from a central office to a number of subscribers
US5719867A (en) Plural telephony channel baseband signal demodulator for a broadband communications system
US6507608B1 (en) Multi-line ADSL modulation
US7376386B2 (en) Systems and methods for distributing content objects in a telecommunication system
US5896556A (en) Apparatus and method for providing a telephone connection over a coax cable distribution system
US5881362A (en) Method of ingress noise reduction in calbe return paths
US7068972B2 (en) Home area network including arrangement for distributing audio programming information from a plurality of source over local radio broadcast
US8291457B2 (en) Channel selection in a multimedia system
US8724526B2 (en) Apparatus and method for transmitting digital data over various communication media
US20020166124A1 (en) Network interface device and broadband local area network using coaxial cable
US20100100918A1 (en) Multi-Port Entry Adapter, Hub and Method for Interfacing a CATV Network and a MoCA Network
US7099443B2 (en) Fiber optic internet protocol network interface device and methods and systems for using the same
US4290142A (en) Interactive cable television system
DE69916623T2 (en) Audio / video redistribution system
US7099951B2 (en) Method and apparatus for multimedia system
US6560234B1 (en) Universal premises distribution platform
US7239698B2 (en) DOCSIS network interface device and methods and systems for using the same
US5893024A (en) Data communication apparatus and method thereof
US5867764A (en) Hybrid return gate system in a bidirectional cable network
US20030156218A1 (en) Method and apparatus of multiplexing a plurality of channels in a multimedia system
US20090046742A1 (en) Outlet with analog signal adapter, a method for use thereof and a network using said outlet
US7346918B2 (en) Intelligent device system and method for distribution of digital signals on a wideband signal distribution system
CA2020841C (en) Video transmission and control system utilizing internal telephone lines
EP0959624B1 (en) Network interface module

Legal Events

Date Code Title Description
AS Assignment

Owner name: MICRON TECHNOLOGY, INC., IDAHO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEI CALIFORNIA, INC.;REEL/FRAME:021492/0782

Effective date: 20010322

Owner name: MICRON ELECTRONICS, INC., IDAHO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KLEIN, DEAN A.;REEL/FRAME:021492/0780

Effective date: 19970331

AS Assignment

Owner name: ROUND ROCK RESEARCH, LLC,NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICRON TECHNOLOGY, INC.;REEL/FRAME:023786/0416

Effective date: 20091223

Owner name: ROUND ROCK RESEARCH, LLC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICRON TECHNOLOGY, INC.;REEL/FRAME:023786/0416

Effective date: 20091223

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION