# US 11,121,789 B2 · Method and system for integrated stacking for handling channel stacking or band stacking

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- Number: US 11,121,789 B2
- Document ID: US11121789B2
- Status: Granted
- Kind: B2
- Application number: 16/259,021
- Filed: 2019-01-28
- Published: 2019-05-23
- Granted: 2021-09-14
- Earliest claimed: 2012-02-08
- Assignees: Entropic Communications, Inc.
- Applicants: Entropic Communications, LLC
- Inventors: Glenn Chang; Brian Sprague; Madhukar Reddy
- Web page: https://patentgrep.com/patent/US11121789B2

## CPC

- H04H 40/90: specially adapted for satellite broadcast receiving
- H04H 20/63: to plural spots in a confined site, e.g. MATV [Master Antenna Television]
- H04N 7/106: {for domestic distribution}
- H04N 7/22: Adaptations for optical transmission
- H04N 21/40: Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N 21/41: Structure of client; Structure of client peripherals
- H04N 21/4108: {characterised by an identification number or address, e.g. local network address (protecting specific internal or external computer components using identification number G06F21/73; network arrangements, protocols or services for addressing or naming H04L61/00)}
- H04N 21/42684: {Client identification by a unique number or address, e.g. serial number, MAC address, socket ID (network arrangements, protocols or services for addressing or naming H04L61/00)}
- H04N 21/43615: {Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals (home Audio Video Interoperability [HAVI] data switching networks H04L12/2805)}
- H04N 21/45: Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N 21/60: Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client {, e.g. sending from server to client commands for recording incoming content stream}; Communication details between server and client
- H04N 21/61: Network physical structure; Signal processing (H04B takes precedence)
- H04N 21/63: Control signaling {related to video distribution} between client, server and network components; Network processes for video distribution between server and clients {or between remote clients}, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing (real-time session protocols H04L65/1101; distributed application using peer-to-peer [P2P] networks H04L67/104)
- H04N 21/633: Control signals issued by server directed to the network components or client {(management of faults, events, alarms in data networks H04L41/06)}
- H04N 21/6332: directed to client
- H04N 21/637: Control signals issued by the client directed to the server or network components
- H04N 21/6377: directed to server {(one-way streaming services wherein the source is controlled by the destination H04L65/613)}
- H04N 21/64: Addressing {(network arrangements, protocols or services for addressing or naming H04L61/00; support for multicast or broadcast of one-way stream services H04L65/611)}
- H04N 21/6402: Address allocation for clients {(address allocation in data networks H04L61/50)}
- H04N 21/6405: Multicasting {(data broadcast and multicast in packet switching networks H04L12/18)}
- H04N 21/6408: Unicasting
- H04N 21/647: Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless {(real-time session protocols H04L65/1101)}
- H04N 21/64746: {Control signals issued by the network directed to the server or the client}
- H04N 21/64753: {directed to the client}
- H04N 21/64761: {directed to the server}
- H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Methods and systems are provided for integrated channel and/or band stacking solutions. A plurality of signals may be received, such as via a signal receiver, with each of the received signals being different from remaining ones of the plurality signals. At least two received signals may be processed, such as via one or more processing circuits, and an output signal may be generated based on the processing of the at least two received signals. The output signal may include only one or more portions from each of the at least two signals, with the one or more portions being stacked within the output signal. The stacking of the one or more portions from the at least two signals may include applying channel equalization, with the channel equalization including equalizing power of a plurality of sub-components of a frequency band corresponding to the one or more portions.

## Claims

### Claim 1

A system, comprising:
a signal receiver that is configured to receive a plurality of signals; and
one or more signal processing circuits configured to:
process at least two signals from the plurality of signals, wherein the two signals are different from one another based on at least one characteristic or parameter; and
generate an output signal based on the processing of the at least two signals, wherein:
the output signal comprises only one or more portions from each of the at least two signals;
generating the output signal comprises stacking one or more portions from each of the at least two signals within the output signal;
the stacking comprises applying channel equalization; and
the channel equalization comprises applying power equalization, the power equalization being configured to prevent leakage of power from at least one frequency into adjacent frequencies across an entire frequency band corresponding to the one or more portions in at least one of the at least two signals.

### Claim 2 (depends on 1)

The system of claim 1, wherein the one or more signal processing circuits apply the channel equalization separately to at least two equalization inputs, wherein each of the at least two equalization inputs corresponds to one of the at least two signals.

### Claim 3 (depends on 2)

The system of claim 2, wherein the one or more signal processing circuits generate each of the at least two equalization inputs based on processing of a corresponding one of the at least two signals.

### Claim 4 (depends on 1)

The system of claim 1, wherein processing each of the at least two signals comprises applying one or more of: amplification, mixing, filtering, and analog-to-digital conversion.

### Claim 5 (depends on 1)

The system of claim 1, wherein the channel equalization is applied in frequency-domain, and the one or more signal processing circuits, when applying the channel equalization:
apply frequency-domain equalization;
apply a fast Fourier transform (FFT) function before frequency-domain equalization; and
apply an inverse fast Fourier transform (iFFT) function after frequency-domain equalization.

### Claim 6 (depends on 1)

The system of claim 1, wherein the one or more signal processing circuits are configured to apply the power equalization over a plurality of frequencies within a frequency band corresponding to the one or more portions in at least one of the at least two signals.

### Claim 7 (depends on 1)

The system of claim 1, wherein the signal receiver communicate the output signal to a device that distribute content from the output signal.

### Claim 8 (depends on 1)

The system of claim 1, wherein the signal receiver communicates the output signal over a single link that is configured based on one or more of: a coaxial cable connection, a twisted-pair connection, a Multimedia over Coax Alliance (MoCA) connection, an Ethernet connection, or a Direct Broadcast Satellite (DBS) based connection.

### Claim 9 (depends on 8)

The system of claim 8, wherein the one or more signal processing circuits combine the one or more portions from each of the at least two received signals based on configuration of the single link.

### Claim 10 (depends on 1)

The system of claim 1, wherein the one or more signal processing circuits is housed in the signal receiver.