Tag Archives: CDMA

Tech Giant Qualcomm Ages Gracefully

The wireless chip-maker may be having something of a midlife crisis, but here’s why shares could climb 40%. In an industry that prizes youthful energy, investors have been worried about a midlife crisis at wireless chip giant Qualcomm . Ageists … Continue reading

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不管幾 G,帶來好處最重要!

行動通訊是下一個強勁成長的產業,成為兵家必爭之地,誰都想主導整個技術發展。在 2G 發展到 3G 過程中,有許多的電信業者、科技大廠,甚至連中國政府都爭相搶主導權…… 數位行動通訊從 2G 到 4G 一九九○年,是個人行動通訊關鍵的一年,訊號由類比訊號進入了數位訊號。這就好比當年音樂卡帶轉成 CD 音樂光碟:音樂卡帶是原音重現,沒有經過修潤的類比訊號,CD 音樂則是將語音經過數位化處理,聽起來比較清楚。 另外,由於運輸業的發達,特別是國際間商務往來愈來愈頻繁,區域性行動通訊服務已無法應付地球村時代的需求,國際漫遊是一定要的啦! 2G:數位行動通訊的創世紀 簡單來說,2G (2nd generation) 與 1G 最主要的差別是將訊號數位化,及建立國際漫遊的標準規範。2G 行動通訊有兩大門派,一是由歐洲主導的 GSM (Global System for Mobile Communications) 陣營,其主要核心技術為 TDMA (Time Division Multiple Access);另一為美國主導的高通 (Qualcomm) 陣營,其主要核心技術為 CDMA (Code Division Multiple … Continue reading

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Why the iPhone 5 Lacks Support for Simultaneous Voice and LTE or EVDO (SVLTE, SVDO)

So we’ve seen the new iPhone, and had a chance to briefly play with it at the demo room, but as I’ve learned in the past so many times you only really know a handset after you’ve taken a look … Continue reading

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Spreadtrum buys 3G modem firm, finds CTO

LONDON – Spreadtrum Communications Inc., China’s leading fabless chip company, has announced that it has acquired 48.4% of MobilePeak Holdings Ltd., a fabless chip company that designs UMTS/HSPA+ modem chipsets from bases in San Diego, California and Shanghai, China. Spreadtrum … Continue reading

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Analyst: Infineon exits cell IC market just in time

SAN JOSE, Calif. – Intel Corp. plans to purchase Infineon Technologies AG‘s Wireless Solutions Business (WLS) for $1.4 billion in cash with the deal expected to close in the first quarter of 2011. This is yet another deal in a … Continue reading

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The unthinkable has happened: Qualcomm and MediaTek enter into a patent agreement

MediaTek makes chips for various devices including DVD players and televisions, but they’re most known for their mobile phone chips that go into the millions of Chinese made handsets that never leave the country. The Nokla clones we make fun … Continue reading

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Mediatek and Qualcomm play nice

Patent sharing agreement MOBILE CHIP DESIGNERS Qualcomm and Mediatek have inked a broad patent sharing deal. The agreement will give both firms access to a range of each others wireless communication technologies, including CDMA and WCDMA patents and products. Although … Continue reading

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MediaTek, Qualcomm Reach Agreement On W-CDMA, CDMA Patents

TAIPEI (Dow Jones) — Chip designer MediaTek Inc. (2454.TW) and U.S.-based Qualcomm Inc. (QCOM) said Friday they had agreed on a patent arrangement covering chips used in Wideband Code Division Multiple Access and Code Division Multiple Access networks. Because the … Continue reading

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MediaTek and Qualcomm Enter Into Patent Arrangement

SAN DIEGO AND HSINCHU — November 19, 2009 — Qualcomm Incorporated (Nasdaq: QCOM), a leading developer and innovator of advanced wireless technologies, products and services, and MediaTek, Inc., (TPE: 2454), a leading fabless semiconductor company for wireless communications and digital … Continue reading

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晨星(MStar)的 GPS 晶片韌體出問題

最近 GPS 產品市場有大件事發生,就是晨星半導體(MStar)的 GPS 晶片韌體有 bug 會造成 GPS 導航器無法定位,網路上傳聞該軟體 bug 是跟 GPS 特殊的計時系統有關,問題都發生在 2009/6/14 ~ 2009/6/20 之間。 消息最早是台灣知名度頗高,擁有無數潛水工程師的 Mobile01 論壇上爆發出來:GPS全掛點了….現在下午兩點四十一分 經過一些稍微專業點的網友們或探問、或拆解,發現全是裡頭裝配有晨星半導體(MStar)GPS 晶片的導航器才有無法定位的問題,另外有人還發現有系統時間錯亂的狀況。出狀況的機種大部分都是 GoNav 牌,而有 GPS 功能的手機則完全沒有災情傳出。 沒多久就有人爆出是晨星(MStar)GPS 晶片的問題所造成,甚至有人猜測是 MStar 韌體只拿 9 bits 來存放 10 bits 長度的 Week Number 資料,因為 6/14 … Continue reading

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