公开(公告)号：US5502528A

公开(公告)日：1996-03-26

申请号：US333532

申请日：1994-11-02

申请人： Wlodzimierz S. Czarnecki ,  George W. Brock ,  Kent R. Gandola ,  Joseph de Lellis ,  Christopher P. Mencher

发明人： Wlodzimierz S. Czarnecki ,  George W. Brock ,  Kent R. Gandola ,  Joseph de Lellis ,  Christopher P. Mencher

IPC分类号： G03B17/24 ,  G11B5/31 ,  G11B15/60

CPC分类号： G03B17/24 ,  G11B5/31 ,  G03B2217/244

摘要： A photographic still camera for receiving an elongated filmstrip having a cross-curvature in the cross film direction across said filmstrip and having a substantially transparent magnetic layer deposited on the film surface and for recording or reproducing information on or from the magnetic layer in the image area in and relation to the exposure of image frames of the filmstrip. A magnetic head is formed of a plurality of frustums including inner frustums supporting a plurality of active head gaps in an interior region and at least one further outer frustum on each side of the inner frustums in the cross film direction. The frustums and active head gaps have a contoured height profile in the cross film direction positioned to penetrate the film plane and to wrap the filmstrip around the frustums in a cavity in the film transport path, the contoured height profile in the cross film direction ensuring elastic compliance of the active head gaps with the magnetic on film layer tracks, with or without applied film tension or film compression. Contouring is effected by lapping the head mounted in the film transport path to approximate the cross-curvature of the filmstrip.

摘要翻译： 一种照相静态照相机，用于接收在横跨薄膜方向上横跨所述胶卷并具有沉积在胶片表面上的基本上透明的磁性层并用于在图像区域中或从磁性层记录或再现信息的细长胶片 与影片的图像帧的曝光有关。 磁头由多个平截头体形成，包括支撑内部区域中的多个有效头部间隙的内部平截头体和在横截面膜方向上的内部截头锥体的每一侧上的至少一个另外的外截头锥体。 截头锥体和主动头部间隙具有在横向膜方向上的成形高度轮廓，其定位成穿透膜平面并且将胶片包裹在膜输送路径中的空腔中的平截头体周围，横截面膜方向上的轮廓高度轮廓确保弹性 活性头间隙与磁性膜层轨迹的一致性，有或没有施加膜张力或膜压缩。 轮廓通过研磨安装在胶片传送路径中的头部来近似胶片的横向曲率来实现。

公开(公告)号：US4310721A

公开(公告)日：1982-01-12

申请号：US114777

申请日：1980-01-23

申请人： Harold J. Manley ,  Joseph de Lellis, Jr.

发明人： Harold J. Manley ,  Joseph de Lellis, Jr.

IPC分类号： H04B1/66 ,  G10L1/00

CPC分类号： H04B1/66

摘要： Disclosed is a system whereby in a transmit mode analog speech is sampled d converted digitally to 12 bits of accuracy and then fed into a fast Fourier transform (FFT) processor which analyzes the speech into spectral and pitch parameters. These parameters are then quantized into a data stream which acts as an input to a differential phase shift keying modulator. The modulator constructs a multi-tone modem output signal from a 25 tone stack which is converted to an analog signal which is fed into a communications channel. In the receive mode a modem input signal from the communications channel is fed through the same analog to digital converter which was used for input speech. A data stream is now provided which is coupled back into the same digital FFT processor which now operates to provide pitch spectral coefficients which are then separated and used by a synthesizer to reconstruct a speech waveform. The speech waveform is applied to a digital analog converter which is the same converter used to produce the line signal when the processor operates in the transmit mode. The FFT processor implements a single FFT algorithm which is used for both vocoder and modem processing in both the transmit and receive modes.

摘要翻译： 公开了一种系统，其中在发射模式中，模拟语音被采样和数字转换为12位精度，然后馈入快速傅里叶变换（FFT）处理器，其将语音分析为频谱和音调参数。 然后将这些参数量化为作为差分相移键控调制器的输入的数据流。 调制器构建了一个25音调堆叠的多音调制解调器输出信号，该信号被转换为馈入通信信道的模拟信号。 在接收模式中，来自通信信道的调制解调器输入信号通过用于输入语音的相同模数转换器馈送。 现在提供数据流，其被耦合回相同的数字FFT处理器，其现在操作以提供音调频谱系数，然后由合成器分离并使用它们来重构语音波形。 语音波形被应用于数字模拟转换器，该数字模拟转换器是当处理器在发送模式下操作时用于产生线路信号的相同转换器。 FFT处理器实现单个FFT算法，其用于发送和接收模式下的声码器和调制解调器处理。