**对比文件名称**：发明申请_US20150362586A1 DISTANCE-MEASURING-DEVICE
**目标专利名称**：具有反射信号强度测量的LIDAR系统
**本次调用模型名称**：DeepSeek
## 特征比对表格 ##
| 技术特征描述及公开性判断结果 | 对比文件原文引用 | 公开性论述 |
| **技术特征A《直接公开》** | [0039] “A third timing chart A3 shows the amplitude of light pulse 32 reflected by the object 24 and received by the light sensor 26.” <br> [0051] “FIG. 5 shows an example of timing charts of signals processed by the distance-measuring-device 50...” <br> [0062] “A third timing chart B3 shows the characteristics of the reflected light-pulse 72 and specifically shows the current Ipd provided through the light sensor 26 during the reception of the reflected light-pulse 72.” | 对比文件明确、反复地描述了其测距设备包含光传感器（light sensor 26），该传感器用于接收从物体反射回来的光脉冲（reflected light-pulse 32/72）。这与目标专利中“在LIDAR系统的检测器处接收反射光脉冲”的技术特征完全相同，且作用均为接收回波信号以进行后续处理。因此，本领域技术人员能够毫无疑义地得出该特征。 |
| **技术特征B《直接公开》** | [0029] “The light sensor 26 includes a photosensitive element 27 such as a photo diode which produces an electrical current Iph as a function of (intensity of) the reflected light-pulse 32...” <br> [0045] “The light sensor 26 includes the photosensitive element 27 such as a photo diode which produces an electrical current Ipd as a function of the reflected light-pulse 72...” | 对比文件明确公开了光传感器中的光敏元件（如光电二极管）响应于接收到的反射光脉冲而产生电流信号（Iph或Ipd）。该电流信号是光强度的函数，即表示反射光脉冲的模拟电信号。这与目标专利中“响应于反射光脉冲产生模拟信号”的技术特征实质相同。因此，该特征被直接公开。 |
| **技术特征C《隐含公开》** | [0046] “As an option, the light sensor 26 is further comprises a second voltage comparator 82 capable of comparing the intensity of the reflected light-pulse 72 with a second reference level... The second voltage comparator 82 can provide to the controller 68 the information on the presence of the rising edge of the reflected light-pulse 72 when the level of the reflected light-pulse 72 exceeds the second adjustable threshold voltage value THL2. The second voltage comparator 82 can further provide to the controller 68 the information on the falling edge of the reflected light-pulse 72 when the level of the reflected light-pulse 72 is smaller than the second adjustable threshold voltage value THL2.” <br> [0062] “At a time TA, the level of the current Ipd through the light sensor 26 exceeds a second level, e.g. when the current Ipd produces a voltage that exceeds a second adjustable threshold voltage THL2. A time TB is shown when the level of the current Ipd of the light sensor 26 becomes smaller than the second adjustable threshold voltage THL2. The controller 68 is informed by the second voltage comparator 82...” | 目标专利的TDC用于响应于模拟信号产生至少两个“停止”信号及对应的时间数据，以标记信号超过特定阈值（如上升沿和下降沿）的时刻。对比文件虽未明确使用术语“TDC”，但其公开了使用第二电压比较器82来检测反射光脉冲产生的电流Ipd超过第二阈值THL2（对应上升沿，时间TA）和低于该阈值（对应下降沿，时间TB）的时刻，并将这些时刻信息提供给控制器68。这些时刻信息（TA, TB）本质上就是对应特定阈值（第二阈值）的“停止”信号及其时间数据。本领域技术人员能够合理推断，为了获取TA和TB这两个时间点，需要一种能够响应于模拟信号（Ipd）在达到特定电平时输出时间标记的装置，而TDC是实现此功能的常规、等同手段之一。因此，该特征被隐含公开。 |
| **技术特征D《直接公开》** | [0029] “...and a current integrator which is connected to the photosensitive element 27 and converts the current Iph to an electrical charge.” <br> [0045] “...and a current integrator which is connected to the photosensitive element 27 and converts (e.g. sums/integrates) the current Ipd to an electrical charge.” <br> [0065] “The current Ipd is integrated during the first and a second adjacent time slots TS1, TS2 of equal time that results respectively to a first and a second amount of electrical charges Q1, Q2.” | 对比文件明确、多次地公开了光传感器26中包含电流积分器（current integrator），其功能是连接至光敏元件并对产生的电流（Ipd）进行积分，将其转换为电荷（Q1, Q2等）。这完全对应于目标专利中“使用积分器积分所述模拟信号”的技术特征。因此，该特征被直接公开。 |
| **技术特征E《直接公开》** | [0049] “...the DSTDC 71, including a first capacitor 73, a second capacitor 75... communicates with the controller 68 and provides the charging level of at least one of the first capacitor 73 and the second capacitor 75 to the controller 68 via an Analog to Digital Converter 86.” <br> [0055] “As the Analog to Digital Converter 86 is able to provide the first voltage value VC1 of the first capacitor 73 to the controller 68...” <br> [0067] “...the first and the second amounts of electrical charges Q1, Q2 can be acquired through the terminals of the first capacitor 21 and the second capacitor 23, in such a case the terminals constitute a first and a second integrator's output voltages value V1, V2... the distance d to the object 24 can be calculated by the controller 28 using Eq. 6...” | 对比文件明确公开了模数转换器ADC 86的存在，其作用是将积分器输出（例如电容器73、75上的电压VC1，或光传感器中电容器21、23上的电压V1、V2）转换为数字值并提供给控制器。这完全对应于目标专利中“使用模/数转换器ADC对积分器的输出进行取样以产生表示积分器输出的数字样本”的技术特征。虽然对比文件中ADC的取样触发可能由控制器逻辑控制，而非严格“一或多个取样时间”，但将积分后的模拟电压值数字化以产生数字样本的核心技术手段已被直接公开。 |
| **技术特征F《隐含公开》** | [0055] “...the controller is then able to accurately calculate the duration ΔT1 of the first time-interval [T0−T1] by Eq. 3: ΔT1=(VC1*C1)/Ic=T1−T0.” <br> [0066] “The distance d to the object 24 can be calculated by using Eq. 5 where c stands for the velocity of light in the medium through which it propagates: d=½*c*ΔT1*(Q1/(Q1+Q2)).” <br> [0068] “The distance d to the object 24 can be calculated by using Eq. 7 where c stands for the velocity of light in the medium through which it propagates: d=½*c*ΔT1*(Q3/(Q3+Q4)).” | 目标专利中，处理时间数据和数字样本以估计总反射能量，并明确指出此处理包括“基于所述第一时间数据和所述第二时间数据来确定所述模拟信号的脉冲持续时间”。在对比文件中，为了计算距离d，公式中包含ΔT1（即T1-T0），这个ΔT1被明确描述为发射光脉冲的长度（[0056]），并且是通过测量电流I1超过和低于阈值THL1的时间T0和T1来确定的（[0053]）。虽然对比文件中ΔT1直接用于距离计算而非能量估计，但“确定脉冲持续时间”这一具体的处理步骤已被明确公开。本领域技术人员可以理解，在对比文件的方案中，确定时间差（T1-T0或TA-TB等）是进行后续计算（无论是距离还是能量）所必需的中间步骤。因此，该特征被隐含公开。 |
| **技术特征G《直接公开》** | [0065] “The current Ipd is integrated during the first and a second adjacent time slots TS1, TS2 of equal time that results respectively to a first and a second amount of electrical charges Q1, Q2.” <br> [0068] “The current Ipd is integrated during the first and the second time slots TS1, TS2 that results respectively to a third and a fourth amount of electrical charges Q3, Q4.” | 目标专利中“基于数字样本来确定模拟信号的脉冲能量”，其数字样本源于积分器的输出，代表了积分电荷（即脉冲能量）。对比文件明确公开了对电流Ipd在特定时间窗口（TS1, TS2）内进行积分，得到电荷量Q1、Q2（或Q3、Q4）。这些电荷量Q正是脉冲能量在对应时间窗口内的度量。虽然对比文件未使用“脉冲能量”一词，但其技术实质完全相同：通过对表示光脉冲的模拟信号（电流Ipd）积分来获得其能量相关的量（电荷Q）。因此，该特征被直接公开。 |
| **技术特征H《未公开》** | 无相应原文。 | 目标专利特征H的核心在于：将反射光脉冲的**最大值**估计为与（脉冲能量/脉冲持续时间）的比率成比例。这是一种特定的信号峰值估计方法，用于提高反射能量估计的精度。对比文件虽然公开了脉冲持续时间（ΔT1）和脉冲能量（电荷Q），也进行了除法运算（Q/(Q1+Q2)或Q3/(Q3+Q4)），但其**目的**是计算距离（d），计算公式为d ∝ ΔT1 * [Qx/(Qx+Qy)]。整个技术方案的出发点和所要解决的技术问题（提高测距精度 vs. 提高反射能量测量精度）不同，导致对数据的处理方式和最终目标不同。对比文件完全没有提及或暗示需要估计反射信号的**最大值**，更没有公开将最大值估计为能量与持续时间比率成比例的这一特定算法。因此，该特征既未被直接公开，也未被隐含公开。 |
| **技术特征I《隐含公开》** | [0053] “A reference time T0 is shown when the level of the current I1 of the optical diode 70 exceeds a first level, e.g. when the current I1 produces a voltage that exceeds a first adjustable threshold voltage THL1. A time T1 is shown when the level of the current I1 becomes smaller than the first adjustable threshold THL1.” <br> [0062] “At a time TA, the level of the current Ipd through the light sensor 26 exceeds a second level, e.g. when the current Ipd produces a voltage that exceeds a second adjustable threshold voltage THL2. A time TB is shown when the level of the current Ipd of the light sensor 26 becomes smaller than the second adjustable threshold voltage THL2.” | 目标专利特征I限定了第一时间数据和第二时间数据分别是对应模拟信号达到第一阈值和第二阈值的时戳。对比文件明确记载了：对于发射脉冲，记录其电流超过第一阈值THL1的时间T0和低于第一阈值THL1的时间T1；对于反射脉冲，记录其电流超过第二阈值THL2的时间TA和低于第二阈值THL2的时间TB。T0、T1、TA、TB就是对应于特定阈值的时戳。虽然对比文件中T0、T1用于发射脉冲，TA、TB用于反射脉冲，而目标专利中两个时戳均针对反射脉冲，但“时戳对应阈值”这一技术手段本身已被公开。本领域技术人员可以合理推断，为了测量反射脉冲的特性，同样可以记录其达到不同阈值（例如第一阈值和第二阈值）的时戳。因此，该特征被隐含公开。 |
| **技术特征J《隐含公开》** | [0064] “A fourth timing chart B4 shows a first and a second time slots TS1 and TS2... The first and the second time slots TS1, TS2 are under the control of the controller 28, such that the light sensor 26 is effectively enable by the controller 28 only during the time slots TS1, TS2 to register the current Ipd through the light sensor 26 e.g. by integrating the current Ipd during these time slots TS1, TS2...” | 目标专利特征J限定“积分所述模拟信号包括在所述LIDAR系统的扫描间隔内积分”。对比文件公开了对反射信号电流Ipd的积分是在特定的、受控的时间窗口（时间槽TS1和TS2）内进行的。在LIDAR系统中，这种用于接收和处理回波信号的预定时间窗口通常就对应于系统的“扫描间隔”或测量窗口。本领域技术人员能够理解，为了实现有效的距离测量或信号分析，积分操作必然在一个与系统探测周期相关的时间范围内进行，这个范围可以合理地对应于“扫描间隔”。因此，该特征被隐含公开。 |
| **技术特征K《隐含公开》** | [0064] “The duration of the first time slot TS1 is equal to the duration ΔT1 of the first time-interval [T0−T1]. The duration of the second time slot TS2 is equal to the duration ΔT2 of the second time-interval [T1−T2]. As stated above, both time-intervals duration are equal to the length of the emitted light-pulse 62.” | 目标专利特征K进一步限定“所述扫描间隔对应于所述LIDAR系统的操作范围”。对比文件中，积分时间窗口（TS1, TS2）的持续时间被设定为等于发射光脉冲的长度（ΔT1）。在基于飞行时间原理的LIDAR系统中，系统的有效操作范围（即能探测到回波的最大距离）与发射脉冲的宽度及接收窗口的设定直接相关。将接收/积分窗口设置为与发射脉冲持续时间相关联，是本领域设定系统操作范围的常规技术手段。因此，本领域技术人员能够从对比文件公开的“积分窗口时长等于脉冲长度”这一信息，合理推断出该积分窗口对应于系统的某个操作范围。该特征被隐含公开。 |
| **技术特征L《直接公开》** | [0045] “The light sensor 26 includes the photosensitive element 27 such as a photo diode which produces an electrical current Ipd as a function of the reflected light-pulse 72...” <br> [0062] “...specifically shows the current Ipd provided through the light sensor 26 during the reception of the reflected light-pulse 72.” | 目标专利特征L限定“所述模拟信号追踪所述检测器的光敏元件的瞬时输出”。对比文件明确公开了光敏元件（光电二极管）产生的电流Ipd是反射光脉冲的函数，并且在时序图B3中展示了电流Ipd随时间变化的波形，这直接体现了模拟信号（电流Ipd）实时追踪光敏元件瞬时输出的特性。因此，该特征被直接公开。 |
| **技术特征M《未公开》** | 无相应原文。 | 目标专利特征M限定处理过程“进一步包括基于所述第一时间数据、所述第二时间数据和所述数字样本来估计所述物体的反射率”。反射率是物体表面的光学属性，估计反射率需要将接收到的信号能量与已知的发射能量等因素关联起来。对比文件的整个发明目的和所有实施例都专注于**精确测量距离**，其处理时间数据和积分电荷值的唯一目的是代入公式计算飞行时间和距离d（如公式5、6、7、8）。对比文件完全没有提及“反射率”这一概念，也没有任何关于利用测量数据来估计物体表面反射特性的描述或暗示。因此，该特征既未被直接公开，也未被隐含公开。 |
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