摘要:
Dispositif assurant la lecture d'une quantité de charges électriques, puis l'injection dans un dispositif à transfert de charges d'une quantité de charges qui dépend de la quantité lue précédemment. Ce dispositif comporte une grille de lecture (G L ) électrode de stockage et fonctionnant comme reliée à la source d'un transistor MOS d'injection des charges fonctionnant en saturation et constitué de deux diodes (D 1 et D 2 ) et d'une grille de commande (G c ).
摘要:
A charge transfer device is described which includes a plurality of charge transfer channels or shift registers (1→N; N + -+ 2 N), each having at least two sections operable at two different clock frequencies (f1,f2) to provide variable non- symmetrical time delays in the channels and which may be operated with another identical charge transfer device to provide the functional equivalence of a single charge transfer device having twice as many channels and providing symmetrical time delays in the channels.
摘要翻译:描述了包括多个电荷转移通道或移位寄存器(1→N; N +→+ 2N)的电荷转移装置,每个电荷转移通道或移位寄存器具有至少两个可在两个不同时钟频率(f1,f2) 通道中的非对称时间延迟,并且可以用另一个相同的电荷转移装置来操作,以提供具有两倍于多个通道的单个电荷转移装置的功能等同性并且在通道中提供对称的时间延迟。
摘要:
Die Erfindung bezieht sich auf ein Verfahren zum Betrieb einer Ladungsverschiebeanordnung (CTD). Um einen möglichst hohen Signal-Rausch-Abstand des Ausgangssignals zu erreichen, wird die Ausgangsstufe (11-23) der Ladungsverschiebeanordnung mit einer in bezug auf die CTD-Taktfrequenz so niedrigen Frequenz (∅ A , ∅ B ) betrieben, daß mehrere Perioden der CTD-Taktfrequenz (∅ 1 -∅ 4 ) in eine Ausleseperiode fallen. Dabei addieren sich die der Ausgangsstufe zugeführten, signalabhängigen Ladungsmengen arithmetisch, die zueinander nichtkorrelierten Rauschanteile geometrisch, so dass sich der Signai-Rausch-Abstand erhöht. Der Anwendungsbereich der Erfindung umfaßt insbesondere CTD-Transversalfilterschaltungen, die in System mit unterschiedlichen Taktfrequenzen eingesetzt sind.
摘要:
In Schieberegister ist im Bereich der Verarmungszone (8) unter der Elektrode (6) eines MIS-Kondensators ein entgegengetzt zum Halbleitersubstrat (1) dotiertes, nur mit dem Steuergate 9) eines Auslesetransistors (10) kontaktiertes, frei schwebend gehaltenes Diffusionsgebiet (7) (Floating Diffusion) angeordnet. Die Elektrode (6) wird auf konstanter Spannung gehalten und beim Einfließen der Signalladung wird das Diffusionsgebiet (7) aufgeladen und auf das Oberflächenpotential des Kondensators angehoben. Der Hub ist entsprechend der aufgenommenen Ladung geringer als im ungeladenen Zustand. Die Hubverringerung wird vom Auslesetransistor (10) als Auslesesignal verwendet. Beim Ansteuern des Nachbarkondensators fließt die Ladung in diesen ab und das schwebende Diffusionsgebiet (7) wird ohne Zerstörung der Signalladung und ohne Rücksetz-impuls rückgesetzt.
摘要:
A shift register is configured so that each of first and second intermediate stages includes (i) a first input terminal supplied with a clock signal, (ii) a second input terminal supplied with a clock signal different in phase from the clock signal supplied to the first input terminal, (iii) an output terminal connected to the first input terminal via an output transistor, and (iv) a setting circuit, which is connected to the second input terminal and the output transistor, for setting an electric potential of a control terminal of the output transistor, the second intermediate stage includes a control circuit which is (i) connected to the setting circuit of the second intermediate stage and (ii) supplied with a control signal, an operation period (i) starts at a time when a shift start signal supplied to an initial stage is activated and (ii) ends at a time when an output of a final stage changes from activation to inactivation, and when the clock signal supplied to the first input terminal of the second intermediate stage is initially activated after the operation period starts, the clock signal supplied to the second input terminal of the second intermediate stage is inactive.
摘要:
The invention relates to the sampling of temporally changing amounts of charge (102) by receiving varying amounts of charge (102) varying as a function of time, transforming the varying amounts of charge received into a linear distribution pattern, sampling the linear distribution pattern at a plurality of discretely spaced sampling locations (104), and collecting the amounts of charge (102) located between two adjacent scanning locations, and further detecting the collected amounts of charges (102). A temporal sampling device for time-varying analog signals encompasses a transducer (100) in which the analog signals are converted into a corresponding electrical current, a time conversion element (103) in which the electronic charge packets (102) composing the current signal are transported in an electric field along a one-dimensional path, a fast charge-storing and accumulation mechanism with which the charge packets (102) on the one-dimensional path of the time conversion element (103) can all be stored simultaneously, so that their spatial relationship is retained, and a charge detection circuit (109) with which the stored charge packets (102) can be accessed individually and read out with an electronic circuit. In a preferred embodiment, all elements of the sampling device are monolithically integrated using a semiconductor process such as a commercially available CMOS process based on silicon. This makes it possible to provide one- and two-dimensional arrays of such sampling devices, forming line and image sensors.
摘要:
In one embodiment, an imager (201) has an array of photodetectors, each of which accumulates charge during an integration period as a result of light detected during the integration period, the array having a charge capacity which increases during the integration period. A charge capacity controller (202) coupled to the imager (201) adjusts how the imager (201) increases the charge capacity of the array based upon the brightness distribution detected by the imager (201) during at least one previous integration period.