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1. 发明申请

WO1998025340A1 AUTOMATIC DYNAMIC RANGE CONTROLLING CIRCUIT 审中-公开
标题翻译：自动动态范围控制电路
公开(公告)号：WO1998025340A1
公开(公告)日：1998-06-11
申请号：PCT/JP1997004457
申请日：1997-12-05
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT ELECTRONICS CORPORATION , ASAHI KASEI MICROSYSTEMS CO., LTD. , HOSHINO, Toshio , DAIKOKU, Kazuhiro , YAMADA, Kenji , TAKASAKI, Tomokazu
发明人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT ELECTRONICS CORPORATION , ASAHI KASEI MICROSYSTEMS CO., LTD.
IPC分类号： H03G03/20
CPC分类号： H03G1/0088 , H03G3/30
摘要： An automatic dynamic range controlling circuit which is provided with a first circuit of a fixed gain, and a second circuit that has substantially the same propagation delay time as the first one and has a variable gain. The automatic dynamic range controlling circuit holds a peak value of an input signal and selects the first circuit when the peak value of the input signal is smaller than a reference signal level, and selects the second circuit when the peak value of the input signal exceeds the reference signal level. When the held peak value is smaller than the reference signal level, this controlling circuit is operated at the same gain as that of the first circuit for the input signal by setting the gain to that of the second circuit by the reference signal. When the held peak value exceeds the reference signal level, the gain of the second circuit is limited by the held peak value and the output level is made a specified level or below. Therefore, the discontinuity of a waveform of the output signal is prevented not only on the time base but also on the amplitude base for an excessive input signal level, thereby switching a selected circuit smoothly from the first one to the second one.
摘要翻译：具有固定增益的第一电路的自动动态范围控制电路和具有与第一电路基本上相同的传播延迟时间并具有可变增益的第二电路。自动动态范围控制电路保持输入信号的峰值，并且当输入信号的峰值小于参考信号电平时选择第一电路，并且当输入信号的峰值超过参考信号电平时选择第二电路参考信号电平。当保持的峰值小于参考信号电平时，通过将参考信号的增益设置为与第二电路的增益相比，该控制电路以与用于输入信号的第一电路相同的增益工作。当保持的峰值超过参考信号电平时，第二电路的增益被保持的峰值限制，并且输出电平被设定在指定电平以下。因此，输出信号的波形的不连续性不仅在时基上而且在过大的输入信号电平的幅度基础上被防止，从而使所选择的电路从第一个平滑地切换到第二个电路。

2. 发明专利

TW200737991A 動態向量偵測裝置及動態向量偵測方法审中-公开
简体标题：动态矢量侦测设备及动态矢量侦测方法
公开(公告)号：TW200737991A
公开(公告)日：2007-10-01
申请号：TW096104304
申请日：2007-02-06
申请人： NTT電子股份有限公司 NTT ELECTRONICS CORPORATION
发明人：小池雄一郎 KOIKE, YUICHIRO , 高橋拓郎 TAKAHASHI, TAKURO
IPC分类号： H04N
CPC分类号： H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/194 , H04N19/43 , H04N19/523
摘要：本發明的課題在於,一面減低動態向量偵測所需之演算量,一面要防止影像的劣化。動態向量偵測裝置(1),係具有:第1動態向量抽出電路(142),係從已被第1動態向量偵測電路(141)所測出之複數第1動態向量之中,按照所定之削減數而抽出第1動態向量;和選擇電路(143),係從前記複數第1動態向量、和前記抽出之第1動態向量當中,選擇任一種之第1動態向量。
简体摘要：本发明的课题在于,一面减低动态矢量侦测所需之演算量,一面要防止影像的劣化。动态矢量侦测设备(1),系具有:第1动态矢量抽出电路(142),系从已被第1动态矢量侦测电路(141)所测出之复数第1动态矢量之中,按照所定之削减数而抽出第1动态矢量;和选择电路(143),系从前记复数第1动态矢量、和前记抽出之第1动态矢量当中,选择任一种之第1动态矢量。

3. 发明专利

TWI404423B 動態向量偵測裝置及動態向量偵測方法有权
简体标题：动态矢量侦测设备及动态矢量侦测方法
公开(公告)号：TWI404423B
公开(公告)日：2013-08-01
申请号：TW096104304
申请日：2007-02-06
申请人： NTT電子股份有限公司 , NTT ELECTRONICS CORPORATION
发明人：小池雄一郎 , KOIKE, YUICHIRO , 高橋拓郎 , TAKAHASHI, TAKURO
IPC分类号： H04N7/32
CPC分类号： H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/194 , H04N19/43 , H04N19/523

4. 发明授权

US12068421B2 Light reception element and light shielding structure for optical circuit 有权
公开(公告)号：US12068421B2
公开(公告)日：2024-08-20
申请号：US17619070
申请日：2020-06-15
申请人： NTT Electronics Corporation , Nippon Telegraph and Telephone Corporation
发明人： Keiichi Morita , Atsushi Murasawa , Hiroki Kawashiri , Yusuke Nasu
IPC分类号： H01L31/0224 , H01L31/0232 , H01L31/105
CPC分类号： H01L31/022408 , H01L31/02327 , H01L31/105
摘要： A light shielding structure of an optical circuit of the present invention uses a part of the structure of the light reception element itself to suppress stray light. A stepped electrode that covers an upper surface and side surface of a first semiconductor layer constituting a light absorption portion of the light reception element is formed at a height substantially equal to that of an optical waveguide in the optical circuit, and the light absorption portion of the light reception element is shielded from stray light by a wall-shaped or column-shaped wiring electrode extending substantially perpendicularly to a surface layer of the optical circuit. The light shielding structure of the present invention uses a part of the configuration of the light reception element, is formed integrally with the light reception element, and also has an aspect of the invention of the light reception element.

5. 发明公开

US20230216653A1 DATA TRANSFER CIRCUIT AND COMMUNICATION APPARATUS 审中-公开
公开(公告)号：US20230216653A1
公开(公告)日：2023-07-06
申请号：US18000621
申请日：2021-05-27
申请人： NTT ELECTRONICS CORPORATION
发明人： Masahiro TACHIBANA , Mami MIKAMI , Yuki YOSHIDA
IPC分类号： H04L7/00
CPC分类号： H04L7/0016
摘要： A data transfer circuit (40) according to the invention includes a memory (41) configured to write data in accordance with a write pointer in synchronization with a first clock, and read out the data in accordance with a readout pointer in synchronization with a second clock, a clock generation circuit (44) configured to generate the second clock by multiplying a reference clock by a rational number N, a frequency error estimation circuit (42) configured to estimate a frequency error between the first clock and the second clock based on a change amount of a pointer difference between the write pointer and the readout pointer, and an adjustment circuit (43) configured to output, as an adjustment multiple ΔN, a value obtained by dividing the estimated frequency error by a frequency of the reference clock. The clock generation circuit (44) generates the second clock by multiplying the reference clock by a rational number (N+ΔN) using the adjustment multiple ΔN output from the adjustment circuit (43). A data transfer circuit capable of speeding up clock synchronization can be provided.

6. 发明授权

US11494165B2 Arithmetic circuit for performing product-sum arithmetic 有权
公开(公告)号：US11494165B2
公开(公告)日：2022-11-08
申请号：US16959986
申请日：2018-12-18
申请人： NTT ELECTRONICS CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Kenji Kawai , Ryo Awata , Kazuhito Takei , Masaaki Iizuka
IPC分类号： G06F7/544 , G06F7/53
摘要： An arithmetic circuit includes a LUT generation circuit (1) that, when coefficients c[n] (n=1, . . . , N) are paired two by two, outputs a value calculated for each of the pairs, and distributed arithmetic circuits (2-m) that calculate values z[m] that are sums of products of data x[m, n] of a data set X[m] containing M pairs of data x[m, n] and the coefficients c[n], in parallel for each of the M pairs. The distributed arithmetic circuit (2-m) includes binomial distributed arithmetic circuits that, for each of the pairs, calculate sums of products of a value obtained by pairing N data x[m, n] corresponding to the circuit two by two and a value obtained by pairing the coefficients c[n] two by two, and a figure matching circuit that matches a number of decimal figures of the sums with a predetermined number of decimal figures.

7. 发明授权

US11432005B2 Moving image encoding device 有权
公开(公告)号：US11432005B2
公开(公告)日：2022-08-30
申请号：US16452025
申请日：2019-06-25
申请人： NTT Electronics Corporation , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Akiko Shimazaki , Ken Nakamura , Takayuki Onishi , Takashi Sano
IPC分类号： H04N19/00 , H04N19/593 , H04N19/176 , H04N19/159 , H04N19/14 , H04N19/107 , H04N19/11 , H04N19/126 , H04N19/182 , H04N19/61 , H04N19/625
摘要： A computation unit subtracts a prediction image from an input image. An orthogonal transformation unit applies orthogonal transformation to an output of the computation unit. A quantization unit quantizes an output of the orthogonal transformation unit. An encoding unit encodes an output of the quantization unit. A prediction mode determination unit determines a prediction mode from the input image. The prediction mode is different according to types of an I-picture, a P-picture and a B-picture.

8. 发明授权

US11333950B2 Optical module 有权
公开(公告)号：US11333950B2
公开(公告)日：2022-05-17
申请号：US17295669
申请日：2019-08-30
申请人： NTT ELECTRONICS CORPORATION
发明人： Atsushi Kusayama , Yasuyuki Nanaumi , Kiyoshi Kido , Yuji Akahori
IPC分类号： G02F1/313 , G02B6/35 , H04Q11/00 , G02F1/31
摘要： An optical module of a configuration that ensures use of commercially available electronic components and reduction of the number of current generation circuits and electric wirings. The optical module includes an electronic component mounted on a separate board from a light wave circuit board provided with an optical component such as an optical switch, and they are each electrically connected by wire bonding. For this reason, the optical module can use a commercially available electronic component. In addition, the module has a configuration in which heaters of optical switches, which do not simultaneously flow currents, are grouped and a current from one current generation circuit is supplied to any one of the heaters in the group by means of one electrical switch. For this reason, the optical module does not have to be prepared with the same number of electrical switches and current generation circuits as the number of heaters.

9. 发明授权

US11287578B2 Multicast switch 有权
公开(公告)号：US11287578B2
公开(公告)日：2022-03-29
申请号：US16982491
申请日：2019-03-26
申请人： NTT Electronics Corporation
发明人： Mitsuru Nagano , Tatsuya Yoshii , Masahiro Yanagisawa , Tatsunori Nakahashi
IPC分类号： G02B6/35 , G02B6/12 , G02F1/313
摘要： There is provided a small MCS with the number of leads reduced by half as compared with the conventional configuration. A multicast switch according to the present invention is formed on a substrate, comprising: M input ports, N output ports; M×N optical switch units (optical SU); optical waveguides optically connecting the M input ports, M×N optical SU, and N output ports; and leads connected to the respective M×N optical SU. A multicast switch is configured such that by activating one optical SU, an optical signal input to an input port associated with the activated optical SU is output from an output port associated with the activated optical SU. The M×N optical SU include at least a gate switch and a main switch. In each optical SU, the gate switch and the main switch are connected to the common lead.

10. 发明申请

US20220019030A1 OPTICAL MODULE 有权
公开(公告)号：US20220019030A1
公开(公告)日：2022-01-20
申请号：US17295669
申请日：2019-08-30
申请人： NTT ELECTRONICS CORPORATION
发明人： Atsushi KUSAYAMA , Yasuyuki NANAUMI , Kiyoshi KIDO , Yuji AKAHORI
IPC分类号： G02B6/35
摘要： An optical module of a configuration that ensures use of commercially available electronic components and reduction of the number of current generation circuits and electric wirings. The optical module includes an electronic component mounted on a separate board from a light wave circuit board provided with an optical component such as an optical switch, and they are each electrically connected by wire bonding. For this reason, the optical module can use a commercially available electronic component. In addition, the module has a configuration in which heaters of optical switches, which do not simultaneously flow currents, are grouped and a current from one current generation circuit is supplied to any one of the heaters in the group by means of one electrical switch. For this reason, the optical module does not have to be prepared with the same number of electrical switches and current generation circuits as the number of heaters.

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