Cassette including a recording medium for a recording apparatus
    2.
    发明授权
    Cassette including a recording medium for a recording apparatus 失效
    盒式磁带,包括用于记录装置的记录介质

    公开(公告)号:US5764457A

    公开(公告)日:1998-06-09

    申请号:US839534

    申请日:1997-04-14

    摘要: A cassette for use with a recording apparatus comprises: a housing for a recording medium, the housing having a first surface and side walls, the recording medium being accessible through one of the side walls; at least a part of a chip card affixed to the housing, forming a second surface of the housing and closing the cassette, the chip card part having a memory formed integrally therewith and externally accessible contacts; and, the contacts of the chip card being positioned on the second surface to be engageable by corresponding contacts in the recording apparatus when the cassette is inserted therein. One of the side walls has an access door for the recording medium and the second surface forms an upper wall of the housing as defined by the access door. The part of the chip card forming the second surface of the housing has a marking position at which light transmissivity can be controlled. The marking position can be rendered non transmissive to light to prevent recording.

    摘要翻译: 一种用于记录设备的盒子包括:用于记录介质的壳体,所述壳体具有第一表面和侧壁,所述记录介质可通过所述侧壁之一接近; 芯片卡的至少一部分固定到壳体上,形成壳体的第二表面并关闭盒,芯片卡部分具有与其一体形成的存储器和外部可触及的触点; 并且当所述盒被插入时,所述芯片卡的触点位于所述第二表面上,以与所述记录装置中的相应触点相接合。 侧壁中的一个具有用于记录介质的通道门,并且第二表面形成由通道门限定的壳体的上壁。 形成壳体的第二表面的芯片卡的部分具有可以控制光透射率的标记位置。 标记位置可以不透光以防止记录。

    Electronic amplifier
    4.
    发明授权
    Electronic amplifier 失效
    电子放大器

    公开(公告)号:US4490687A

    公开(公告)日:1984-12-25

    申请号:US450632

    申请日:1982-12-17

    申请人: Ernst F. Schroder

    发明人: Ernst F. Schroder

    IPC分类号: H03G3/30 H03G3/20 H03G7/00

    CPC分类号: H03G3/3005 H03G7/002

    摘要: An electronic amplifier composed of an electronically controllable amplifier element having a control input for receiving a voltage the value of which determines the gain of the element, with one such value being a predetermined basic gain value of the amplifier element, a control voltage generating circuit for generating a control voltage whose value determines the voltage at the control input of the amplifier element, the element and circuit being constructed for causing the gain of the amplifier element to be unity for one voltage value at its control input and to be different than unity for other voltage values, a nonlinear filter unit connected between the control voltage generating circuit and the amplifier element control input for supplying to the control input a voltage determined by the control voltage, the filter unit including an integrating branch and a differentiating branch having a rectifier device for causing the differentiating branch to be effective only during periods when the control voltage is varying in a selected direction, and a device for switching the amplifier element and the control voltage generating circuit to a mode of operation in which the amplifier element operates with a constant gain value.

    摘要翻译: 一种由电子可控放大器元件组成的电子放大器,该电子可控放大器元件具有用于接收电压的控制输入,该电压的值决定元件的增益,其中一个这样的值是放大器元件的预定基本增益值;控制电压产生电路, 产生控制电压,其值确定放大器元件的控制输入处的电压,该元件和电路被构造用于使放大器元件的增益在其控制输入端处于一个电压值的单位,并且与 连接在所述控制电压产生电路和所述放大器元件控制输入端之间的非线性滤波器单元,用于向所述控制输入端提供由所述控制电压确定的电压,所述滤波单元包括积分分支和具有整流器装置的微分支路 使分化分支仅在围术期才有效 当控制电压在所选方向上变化时,ds以及用于将放大器元件和控制电压产生电路切换到放大器元件以恒定增益值工作的工作模式的装置。

    Broadcast receiver
    5.
    发明授权
    Broadcast receiver 失效
    广播接收机

    公开(公告)号:US5682432A

    公开(公告)日:1997-10-28

    申请号:US148147

    申请日:1993-11-05

    IPC分类号: H04B1/64 H04B14/04 H04H5/00

    CPC分类号: H04B1/64

    摘要: In a broadcast receiver, a dynamic compression of the signal is switched on or off in dependence on whether such a compression has been carried out at the transmitting end. An identification bit is transmitted for identifying this compression at the transmitter end. The object is to create a broadcast receiver which effects automatic switching-on or switching-off of an amplitude compression but manages without a transmitted identification bit. The received audio signal is applied to a signal analysing circuit which determines the scale factors of the signal and generates switching voltages dependent on the scale factors. The present invention has particular applicability for broadcast receivers in a motor vehicle or with subsequent signal recording.

    摘要翻译: 在广播接收机中,信号的动态压缩根据是否在发送端执行这样的压缩而被接通或断开。 发送识别位以在发射机端识别该压缩。 目的是创建一种广播接收机,其实现幅度压缩的自动接通或切断,但是在没有发送的识别位的情况下进行管理。 所接收的音频信号被施加到信号分析电路,信号分析电路确定信号的比例因子并根据比例因子产生开关电压。 本发明对于机动车辆中的广播接收机或随后的信号记录具有特别的适用性。

    Error protection system for a sub-band coder suitable for use in an
audio signal processor
    6.
    发明授权
    Error protection system for a sub-band coder suitable for use in an audio signal processor 失效
    适用于音频信号处理器的子带编码器的误差保护系统

    公开(公告)号:US5706396A

    公开(公告)日:1998-01-06

    申请号:US281734

    申请日:1994-07-27

    CPC分类号: H04B1/667 G10L19/005

    摘要: In a digital audio-signal transmission process, digital audio signals are coded in sub-bands. One or more scaling factors are determined for each sub-band. The coded signals and scaling factors are transmitted in data blocks, then decoded and reproduced at a receiver. The data block contains several types of information including a header, error processing information, a CRC (cyclic redundancy check) protection word, audio information including a bit allocation table, scaling factor selecting information, one or several scaling factors per transmitted sub-band, filler bits, and supplementary information with audio-signal-dependent supplementary information. To improve the protection of the above-described sub-band coded audio signals against transmission errors, supplementary error protection information or an error protection bit is added to the data block instead of filler bits, in order to protect the scaling factors. Acoustically uncomfortable play-back disturbances caused by scaling factor errors are thus eliminated. The invention may be used in digital audio broadcast (DAB), DAB-receivers, recorders and play-back systems.

    摘要翻译: 在数字音频信号传输过程中,数字音频信号被编码在子带中。 为每个子带确定一个或多个缩放因子。 编码信号和比例因子在数据块中发送,然后在接收机处解码和再现。 数据块包含数据类型,包括报头,错误处理信息,CRC(循环冗余校验)保护字,包括比特分配表的音频信息,比例因子选择信息,每个发送子带的一个或多个缩放因子, 填充位和具有音频信号相关补充信息的补充信息。 为了改善上述子带编码音频信号对传输错误的保护,补充的错误保护信息或错误保护位被添加到数据块而不是填充位,以保护缩放因子。 因此消除了由比例因子误差引起的声学不舒服的回放干扰。 本发明可以用于数字音频广播(DAB),DAB接收机,录像机和播放系统中。

    Artificially reducing signal reproduction quality of received degraded
digitally coded audio data
    7.
    发明授权
    Artificially reducing signal reproduction quality of received degraded digitally coded audio data 失效
    人为地降低接收的劣化的数字编码音频数据的信号再现质量

    公开(公告)号:US5483690A

    公开(公告)日:1996-01-09

    申请号:US161822

    申请日:1993-12-03

    申请人: Ernst F. Schroder

    发明人: Ernst F. Schroder

    摘要: A radio broadcast receiver for receiving digitally coded sound broadcasting data (DAB) includes a bit error rate measuring device. A control device controls the reproduction of the sound broadcasting data, wherein a reception quality threshold value is defined in the control device and, upon the measured reception quality falling below the threshold value, the control device alters the reception quality and/or the reproduction signals in a perceptible manner.

    摘要翻译: 用于接收数字编码声音广播数据(DAB)的无线电广播接收机包括误码率测量装置。 控制装置控制声音广播数据的再现,其中在控制装置中定义接收质量阈值,并且在测量的接收质量低于阈值时,控制装置改变接收质量和/或再现信号 以可察觉的方式。

    Electronic amplifier having a transmission factor that is variable by
means of a controllable voltage, specifically an expander
    9.
    发明授权
    Electronic amplifier having a transmission factor that is variable by means of a controllable voltage, specifically an expander 失效
    具有通过可控电压可变的透射因子的电子放大器,特别是扩展器

    公开(公告)号:US4513253A

    公开(公告)日:1985-04-23

    申请号:US450631

    申请日:1982-12-17

    申请人: Ernst F. Schroder

    发明人: Ernst F. Schroder

    IPC分类号: H03G3/30 H03G3/20 H03G7/00

    CPC分类号: H03G3/3005 H03G7/002

    摘要: An electronic amplifier having a transmission factor which can be varied by means of a control voltage, specifically an expander. A switch is provided for selective operation of the amplifier with a fixed control voltage or with a variable control voltage, with this switch being coupled with circuitry for reducing, during operation of the amplifier with a fixed control voltage, the output voltage of the control circuit generating the variable control voltage.

    摘要翻译: 具有能够通过控制电压而变化的透射因子的电子放大器,特别是扩展器。 提供了一种用于选择性地操作具有固定控制电压或可变控制电压的放大器的开关,该开关与电路耦合,以在具有固定控制电压的放大器的操作期间减少控制电路的输出电压 产生可变控制电压。