Exhibit 99.1

ENTROPIC COMMUNICATIONS REPORTS FOURTH QUARTER AND FISCAL YEAR 2011 RESULTS

Revenue up 9% Quarter-over-Quarter to $56.2 Million, Record Annual Revenue of $241 Million

Conference Call to be Webcast Today at 2:30 p.m. Pacific Time

SAN DIEGO, Calif., February 1, 2012 — Entropic Communications, Inc. (Nasdaq: ENTR), a leading provider of silicon and software solutions to enable connected home entertainment, today reported its fourth quarter and fiscal year results for the period ended December 31, 2011. Entropic reported fourth quarter net revenues of $56.2 million, an increase of 9 percent compared with $51.5 million in the third quarter of 2011.

In accordance with U.S. generally accepted accounting principles (GAAP), the Company’s fourth quarter net income was $2.3 million, or $0.03 per share (diluted). This compares with GAAP net income of $4.6 million, or $0.05 per share (diluted) in the third quarter of 2011. Non-GAAP net income in the fourth quarter was $10.2 million, or $0.12 per share (diluted), compared to non-GAAP net income of $10.4 million, or $0.12 per share (diluted) in the third quarter of 2011.

Net revenues for the year ended December 31, 2011 were $240.6 million, an increase of 14 percent from the $210.2 million reported for the year ended December 31, 2010. Net income computed in accordance with GAAP for the year ended December 31, 2011 was $26.6 million, or $0.30 per share (diluted), compared with GAAP net income of $64.7 million, or $0.82 per share (diluted), for the year ended December 31, 2010. Note that GAAP net income for the year-ended December 31, 2010 included a $31.6 million one-time, non-cash tax benefit associated with the reversal of the valuation allowance related to certain deferred tax assets. A reconciliation of the comparable GAAP financial measures to the non-GAAP measures used in this release is included in the attached tables.

Non-GAAP net income for the year ended December 31, 2011 was $55.3 million, or $0.62 per share (diluted), compared to non-GAAP net income of $45.2 million, or $0.55 per share (diluted) for the year ended December 31, 2010.

“We are very pleased with our resumption of revenue growth in the fourth quarter and our overall performance for the year. We delivered record full-year revenue and non-GAAP earnings, and shipped more MoCA and CSS chipsets this year than any other year in the Company’s history,” said Patrick Henry, president and CEO, Entropic Communications. “We are continuing to build on our leadership position with the world’s first MoCA 2.0 silicon solution and believe we will benefit from continued HDTV, DVR and multi-room DVR penetration worldwide, as well as the paradigm shift around streaming IP-based video and multimedia content and services throughout the home. With our industry-leading chipset roadmap, coupled with a deep bench of global partners, we are poised to capitalize on the rising consumer demand to stream high definition video content to fixed and portable devices — in the home or on the go. This shift has created market opportunities to bring new silicon solutions to market that will effectively change the way consumers experience digital entertainment.”

-more-

ENTROPIC COMMUNICATIONS REPORTS FOURTH QUARTER AND FISCAL YEAR 2011 RESULTS

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1. Please refer to “Non-GAAP Financial Measures” below and the financial statements portion of this press release for an explanation of the non-GAAP financial measures contained in the table above and a reconciliation of such measures to the comparable GAAP financial measures.

Recent Highlights

Business Actions

New Wins and Deployments

Innovative MoCA Reference Designs

ENTROPIC COMMUNICATIONS REPORTS FOURTH QUARTER AND FISCAL YEAR 2011 RESULTS

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New Consumer Electronics Products Powered by Entropic’s MoCA Silicon

New Silicon Product Introductions

Entropic Empowers the Home Network at CES2012

ENTROPIC COMMUNICATIONS REPORTS FOURTH QUARTER AND FISCAL YEAR 2011 RESULTS

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Accolades & Awards

For More Information

Entropic management will be holding a conference call today, February 1, 2012, at 2:30 p.m. Pacific Time/5:30 p.m. Eastern Time to discuss the Company’s fourth quarter and fiscal year 2011 results and to provide guidance for the first quarter of fiscal year 2012. You may access the conference call via any of the following:

About Entropic Communications

Entropic Communications, Inc. (Nasdaq:ENTR) is a leading fabless semiconductor company that is engineering the future of connected home networking and entertainment by providing next-generation silicon and software technologies to the world’s leading cable, telecommunications and satellite service providers, OEMs and consumer electronic manufacturers. As a co-founder of MoCA (Multimedia over Coax Alliance), Entropic pioneered and continues to evolve the way high-definition television-quality video and other multimedia and digital content such as movies, music, games and photos are brought into and delivered throughout the home. For more information, visit Entropic at www.entropic.com.

Non-GAAP Financial Measures

This press release and the accompanying tables contain the following non-GAAP financial measures: net income and net income per share. These non-GAAP financial measures exclude the effects on the Statement of Operations of, among others, all forms of stock-based compensation, non-cash acquired intangibles amortization, the loss related to equity method investment, due diligence and other costs related to the Trident Microsystems transaction, the tax benefit associated with the valuation allowance reversal and the cash tax difference and their related effects on the number of diluted shares used in calculating non-GAAP income per share.

ENTROPIC COMMUNICATIONS REPORTS FOURTH QUARTER AND FISCAL YEAR 2011 RESULTS

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Management uses these non-GAAP financial measures to manage the Company’s business, including setting operating budgets and executive compensation plans. These non-GAAP measures are also used to (i) supplement the financial results and forecasts reported to the Company’s board of directors, (ii) evaluate the Company’s operating performance, (iii) compare the Company’s performance to internal forecasts, and (iv) manage the Company’s business and benchmarking performance internally. The non-GAAP measures have been made available to stockholders consistently in the past to provide transparency on how management manages the Company’s operating performance. Management believes that these non-GAAP operating measures are useful to investors, when used as a supplement to GAAP measures, in evaluating the Company’s ongoing operational performance.

The non-GAAP financial measures disclosed by the Company should not be considered in isolation or a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP, and the financial results calculated in accordance with GAAP and reconciliations to those financial statements should be carefully evaluated. The non-GAAP financial measures used by the Company may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies.

Forward-Looking Statements

Statements in this press release that are not strictly historical in nature constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements regarding our expectations for Entropic’s market penetration and overall market expansion, continued and/or future revenue, earnings and product sales growth and the factors that may contribute to such growth, as well as the purchase of certain assets from Trident Microsystems. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause Entropic’s actual results to be materially different from historical results or from any results expressed or implied by such forward-looking statements. These factors include, but are not limited to, our dependence on a limited number of customers and service providers for a substantial portion of our revenues; risks that the market for HD video and other multi-media content delivery and networking solutions in the United States, China and elsewhere will not develop as we expect; risks associated with competing against larger and more established companies and our ability to compete successfully in the market for MoCA-compliant chipsets; risks associated with timely development and introduction of new or enhanced products; the risk that management’s financial estimates, including estimates used in the calculation of the effective cash tax rate upon which we base our non-GAAP earnings, will be different than expected; risks that our collaborations and partnerships will not yield their anticipated benefits; risks associated with adverse U.S. and international economic conditions; with respect to the Trident Microsystems transaction, the risk that the acquisition may not be completed due to a higher offer or otherwise; and other factors discussed in the “Risk Factors” section of Entropic’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2011. All forward-looking statements are qualified in their entirety by this cautionary statement. Entropic is providing this information as of the date of this release and does not undertake any obligation to update any forward-looking statements contained in this release as a result of new information, future events or otherwise.

Entropic Communications^® and the stylized Entropic “curve” logo are either trademarks or registered trademarks of Entropic Communications, Inc. in the United States and/or other countries.

Investor Contact:

Debra Hart

Director, Investor Relations

858.768.3852

debra.hart@entropic.com

Media/Industry Analyst Contact:

Finn Partners for Entropic Communications

Chris Fallon

917.974.1667

chris@finnpartners.com

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ENTROPIC COMMUNICATIONS, INC.

GAAP Condensed Consolidated Statements of Operations

(In thousands, except for per share information)

ENTROPIC COMMUNICATIONS, INC.

GAAP Condensed Consolidated Balance Sheets

(In thousands)

ENTROPIC COMMUNICATIONS, INC.

Unaudited Reconciliation of Non-GAAP Adjustments

(In thousands, except for per share information)

This press release contains the following non-GAAP financial measures: net income and net income per share. The presentation of such measures is not intended to be considered in isolation or as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP. Our non-GAAP net income and net income per share exclude the items listed below.

The following table sets forth such non-GAAP measures for the applicable periods as well as the reconciliation of such measures to the directly comparable GAAP measures for the periods shown.

(1) The Company's non-GAAP net income per share is calculated using the cash tax rate of (8%) and 1% for the three and twelve month periods ended December 31, 2011, respectively. The estimated cash tax rate is the estimated tax payable on the Company's projected tax returns as a percentage of estimated annual non-GAAP pre-tax net income. The Company uses an estimated cash tax rate to adjust for the historical variation in the effective book tax rate associated with the reversal of valuation allowances, the utilization of research and development tax credits, and the utilization of loss carryforwards which currently have an overall effect of reducing taxes payable. The Company believes that the cash tax rate provides a more transparent view of the Company's operating results. The Company's effective tax rate used for the purposes of calculating GAAP net income for the three and twelve month periods ended December 31, 2011 was approximately 42% and 35%, respectively.

(2) During 2011, the Company changed its methodology for calculating non-GAAP net income per share by using the GAAP share count in the calculation of non-GAAP net income per share, and has reflected the effects of such change for all periods presented in 2011.