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USB 80Gbps接口标准正式发布 USB 3.0/USB4称呼被淘汰_我的网站

一 | GLASTONBURY, Conn. -- A former Connecticut police officer is suspected of being a serial burglar and committing 30 or more thefts in three states, including the community he had patrolled until recently. A newly unsealed warrant says former Glastonbury Police Officer Patrick Hemingway is believed to have targeted safes and cash registers at restaurants and businesses in Connecticut, Rhode Island and Massachusetts. The warrant, cited in multiple news reports and released Thursday, says surveillance videos show a suspect possibly resembling the former officer.Hemingway, 37, was charged last month with computer crimes and making a false statement. A judge at his arraignment said more charges were expected. In one surveillance video, a tall male wearing a mask, gloves and a hooded sweatshirt is seen holding a flashlight “in a tactical manner.” The suspect is also holding “a coiled, corded object to his left ear” that resembles the portable police radios used by the Glastonbury Police Department, the warrant said.“Lock-picking tools” were used in some of the burglaries, according to the warrant. Hemingway left behind a bag that included a lock-picking tool kit when he resigned Sept. 1 from the Glastonbury Police Department, the warrant said. Cell phone data and images of a vehicle resembling one owned by Hemingway's wife and spotted at multiple break-ins are also cited in the warrant.As the burglary part of the investigation continues, Hemmingway is being held on a $1 million bond. His lawyer argued in court that the bond was too high. “I've seen murder cases where the bond is that high,” James E. Sulick said. “I want to withhold any comment until I’ve had a chance to review things with my client,” Sulick said Saturday. “And I just haven’t been able to do that yet.”Hemingway was initially arrested as a fugitive from justice on Sept. 22 at a New Jersey airport where Sulick said he was studying to become a commercial pilot. He was extradited to Connecticut. The warrant for the computer crime, signed when Hemingway was in New Jersey, stems from allegations he misused a police database 80 times. According to the warrant, Sulick made 28 queries about his own vehicle from Feb. 26, 2019, as well as 19 queries about his wife's vehicle from April 11, 2022 to Aug. 23, plus other queries."A possible explanation for Patrick running such information so frequently would have been to determine if he was being investigated by police,” the warrant said. Last month, the Glastonbury Police Department issued a news release saying they had been alerted to the possibility that a former officer was a person of interest in a recent burglary and had contacted the Connecticut State Police Major Crimes unit because the investigation involved multiple jurisdictions. The officer was not named and the department said it would not comment further.。到了USB4，不但再次改变命名方式，技术上也变懒了，几乎直接承袭了Intel捐献的雷电3标准，从物理底层到技术规格都如出一辙。

二 | 新鲜出炉的USB4 v2.0，也不是接口名字，而只是规范命名。从此以后(到下次再改名)，USB接口将统一以传输带宽命名，USB4 v2.0对应USB 80Gbps，USB4对应USB 40Gbps，USB 3.2 Gen2x2对应20Gbps，USB 3.2 Gen2对应USB 10Gbps，USB 3.2 Gen1对应USB 5Gbps……更古老的USB 2.0、USB 1.0保持不变，因为它们的速度太慢了，还停留在Mbps数量级。

三 | 如果改叫USB 480Mbps，不但麻烦还容易引起误会(你也知道容易误会啊)。所以请注意新接口下的包装标识、接口标识、数据线标识：回到UBS4 2.0或者说USB 80Gbps，它的首要变化自然是带宽再次翻番来到了80Gbps，这得益于新的基于PAM3信号编码机制的物理层架构，同时还有新定义的80Gbps有源数据线。在特定应用场景中，比如8K超高清显示，USB 80Gbps还可以配置为非对称编码异步传输模式，一个方向可以高达120Gbps，从而足够承载DP 2.0/2.1 UHBR20信号，另一个方向则是40Gbps。

四 | 其次，USB 80Gbps升级了数据和显示协议，可以更好地利用带宽，其中数据传输支持20Gbps的高带宽，显示传输则和DP 2.0、PCIe 4.0相互打通，共享PHY物理层，从而一个接口搞定高速数据、显示。当然了，USB 80Gbps依然保持向下兼容，而且只有USB Type-C一种接口形式。顺带一提，USB Type-C接口规范、USB PD供电规范也已升级，与USB 80Gbps保持同步。